calling brainiacs... probably some math logic question that im not getting.
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WILLL GIVE POINTSSSS
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Answer:
equation 1 : 4.5x + 27
equation 2: -9x\2 + 27
equation 3: 4.5x + 16
equation 4: 4.5x - 16
Step-by-step explanation:
4.5x+27=-9
4.5x=-36
x=-8
2) -9(1/2x-3) = -4.5x +27 =45
-4.5x+27=45
-4.5x=18
x=-4
3) 2(2.25x+8) = 4.5x+16=11.5
4.5x+16=11.5
4.5x=-4.5
x=-1
4) 8.5x - 2(2x+8) = 8.5x -4x -16 = 4.5x-16=11
4.5x-16=11
4.5x=27
x=6
Hope it helped!
Find the surface area if the regular pyramid
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Answer:
170.1 yd^2
Step-by-step explanation:
In picture attached
Answer:
205.2
Step-by-step explanation:
First get the area's of the 3 triangles on top of the base, the formula is base x height divided by 2
10 x 9 = 90
90 / 2 = 45
Multiply the area of the 3 sides together :
45 x 3 = 135
Now find the area of the base triangle :
9 x 7.8 = 70.2
To find the surface area of the ENTIRE shape you have to add all the sides :
135 + 70.2 = 205.2
An equation was created for the line of best fit from actual enrollment data. It was used to predict the dance studio enrollment values shown in the table:
Enrollment Month
January February March April May June
Actual 500 400 550 550 750 400
Predicted 410 450 650 650 600 450
Residual 90 −50 −100 −100 150 −50
Analyze the data. Determine whether the equation that produced the predicted values represents a good line of best fit.
No, the equation is not a good fit because the sum of the residuals is a large number.
No, the equation is not a good fit because the residuals are all far from zero.
Yes, the equation is a good fit because the residuals are not all far from zero.
Yes, the equation is a good fit because the sum of the residuals is a small number.
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Answer:
Step-by-step explanation:
22,064 ÷ 394 equals what?
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Answer:
the correct answer is 56
Step-by-step explanation:
22064÷394=56
The solution is : 22,064 ÷ 394 equals 56.
Here, we have,
given that,
22,064 divided by 394
Given the following mathematical expression;
22,064 / 394
We would apply the law of division for fractions.
22,064 / 394
= 22,064 ÷ 394
= 56
the result of the division.
Hence, The solution is : 22,064 ÷ 394 equals 56.
To learn more on division click:
brainly.com/question/21416852
#SPJ6
Brainlist to the right answer :)
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You subtract 15, you get 36 divided by 12 and you get 3 and finally you have left b<3
3 x 7/12 do not simplify pls
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Answer:
21/12 this is your answer.
Step-by-step explanation:
you add a 1 under the three to make it a fraction, then you multiply straight across 3 times 7 is 21 and 1 time 12 is 12. so you answer is 21/12.
the simplifyed answer is 7/4
12. Convierte estas fracciones impropias en números mixtos:
A. 15/7=
B. 16/6=
C. 12/5=
D. 48/7
Por favor.
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¡Hola! Voy a hacer el mismo proceso para cada uno.
Primero, restaré el denominador del numerador hasta que sea una fracción propia. También simplificaré si es necesario.
Luego, "volveré a sumar los números enteros al número" como un número mixto.
A. 15/7
[tex]\displaystyle \frac{15-7-7}{7} =\frac{1}{7}[/tex]
[tex]\displaystyle \frac{1}{7}+1+1=[/tex]
[tex]\displaystyle 2\frac{1}{7}[/tex]
B. 16/6
[tex]\displaystyle \frac{16-6-6}{6} =\frac{4}{6}=\frac{2}{3}[/tex]
[tex]\displaystyle \frac{2}{3}+1+1=[/tex]
[tex]\displaystyle 2\frac{2}{3}[/tex]
C. 12/5
[tex]\displaystyle \frac{12-5-5}{5} =\frac{2}{5}[/tex]
[tex]\displaystyle \frac{2}{5}+1+1=[/tex]
[tex]\displaystyle 2\frac{2}{5}[/tex]
D. 48/7
[tex]\displaystyle \frac{48-7-7-7-7-7-7}{7} =\frac{6}{7}[/tex]
[tex]\displaystyle \frac{6}{7}+1+1+1+1+1+1=[/tex]
[tex]\displaystyle 6\frac{6}{7}[/tex]
B. 2 2/3 simplest form
C. 2 2/5
D. 6 6/7
Hope this helps ;)
I N E E D HELPPPPPPPPP its math 30 points pls help!
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Answer: in order of question boxes presented
3 = weekly rainfall in seattle = 1200 cm
1 = weekly rainfall in portland and how much = week 3 and 800
2 = flavor ice cream girls prefer over boys = chocolate, strawberry and cookies and cream
edited to correct #1
i apologize its hard to see the graphs on iphone
Step-by-step explanation:
identified answer from graphs given
Question 1: Week 3, and it’s 800
Question 2: Strawberry, Chocolate, Cookies and Cream.
What is the area of the parallelogram?
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Answer:
l×b×h
Step-by-step explanation:
Because of the sides of the parallelogram are different, so you must calculate the length, breath and the height
8th grade linear functions, will give brainliest if the steps are listed and explained :)))
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Get the slope of the line using the two known points:
slope = (7 3/4 - 6 1/4) / (1 1/4 - 3/4) = (1 2/4) / (2/4) = 3
Use the point-slope formula for a line to get the equation of the line. You can use any of the known points and the slope computed above. For example,
y - 6 1/4 = 3 (x - 3/4) ⇒ y = 3x + 16/4 = 3x + 4
Then for some given value of x, the third point has y-coordinate 3x + 4.
"Which values" suggests there may be more to the question, namely some list of answer choices. If you have something like that, just check if the above condition is met.
Ahat is the area of this quadrilateral?
A,B,C,D
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Answer:
A. 12 square feet
Step-by-step explanation:
So it's easier to find the area when you split the shape into 2 parts, and they already did that for you. So basically you find the area of both triangles and add them together. The formula for a triangle is base x height divided by 2. You don't have to do that because there are 2 triangles with the same base and height so you don't have to divide it by 2. 3 x 4 = 12, so A. 12 square feet is your answer.
What is the mode of the data represented in this line plot?
Enter your answer in the box.
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Reason: Mode means most frequently used number
Answer is 8
Please Help ASAP!!!! (will give brainliest) ^^
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Answer:68.921
Step-by-step explanation:
its S^3
SO SIMPLY
[tex]4.1^{3}[/tex]
pls answer I will mark brainliest
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Answer: The answer is 36ft³, or 2916ft.
Formula is given plug into calculator
V= 4/3 • 3 • 729
We’re told to replace pi with 3
And 9^3 (9•9•9) = 729
Multiply and you get 2,916ft and simplify It to cube root to get 36ft^3
Solve for x: 24 = -2(r + 9)
HELP
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Answer:
r = -21
Step-by-step explanation:
-2(r + 9)
-2 (-21 + 9)
-21 + 9 = -12
-2(-12)
= 24
Answer:
-21
Step-by-step explanation:
Detailed explanation:
24 = -2(r + 9)
First, I did distributive property
24 = -2r -18
Now I will add 18 to both sides
42 = -2r
Now I will divide both sides by -2
-21 = r
Please give Brainliest if you find this useful.
this is a bonus question
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Answer:
10,500
Step-by-step explanation:
See this as 2 rectangles: a box of water (28cm), and another box with the height you want (35cm)
Area of Rectangle = lwh
For the water;
50 x 30 x 28= 42000
As for the needed volume:
50 x 30 x 35 = 52500
To find how much more water, subtract the smaller volume from bigger volume.
10500 should be the final answer
Main idea: Experimental and theoretical probability
1. Fill in the blanks to compare experimental and theoretical probability.
If you know all of the possible outcomes of a trial, and all outcomes are equally likely, you can calculate the _______________ probability of a certain event.
The theorical probability of a coin landing on heads is _____%.
You can estimate probability by doing an _______________.
Experimental probability is also called _______________ probability.
2. Fill in the blanks to describe using probability experiments to estimate an unknown probability.
To estimate an unknown probability, _______________ the number of successful trials by the _________________________ of trials.
The more trials you perform, the more _______________ the _______________ tends to be.
3. Complete the steps to show how to estimate probabilities by repeating trials.
4. Anna does not know what colors of blocks are in a bag. She selects a block out of the bag, records its color, and replaces it in the bag. She repeats the process for a total of 50 trials, and then summarizes her data. Find P(yellow), the probability of choosing a yellow block.
Color
Green
Blue
Yellow
Number
18
22
10
Identify successful outcomes as choosing a _______________ block.
Of the 50 trials, _____ were successes.
Based on the data, the estimated probability of choosing yellow is _____. In simplest form, P(yellow) = _____.
Main idea: Conducting experiments
5. Complete the steps to estimate probabilities based on experimental data for this problem.
Marci made a 10-sided object and wrote a number from 0 to 9 on each face. She is not sure all the sides are equal in size, so she doesn't know the probability of rolling each number.
The sample space:
This tally table shows the data Marci collected from 10 rolls of her 10-sided object. Each mark represents one roll of that number. Fill in the estimated probability for each event based on the data after 10 rolls.
Estimated probabilities after 10 rolls
Rolled a:
0
1
2
3
4
5
6
7
8
9
Number of times
Probability
This table shows the data Marci collected from 100 rolls of her 10-sided object. Fill in the estimated probability for each event based on the data after 100 rolls.
Estimated probabilities after 100 rolls
Rolled a:
0
1
2
3
4
5
6
7
8
9
Number of times
6
14
7
13
9
11
8
12
11
9
Probability
Main idea: Estimating probability with relative frequency
6. Barry made four out of five free throws. Complete the table and answer the questions about the relative frequency of free throws made.
Free throws made
Free throws tried
Relative frequency
What is the estimated probability that Barry will make his next free throw? How likely is he to make the shot?
7. Complete the sentences to describe using relative frequency tables to estimate probability.
The probability of an event can be estimated by finding the ____________________ of the event.
The relative frequency is the number of times a(n) _______________ occurs divided by the number of observations.
Main idea: Using probability to approximate frequency
8. Tamara and her sister play a game using a spinner. A typical game involves 136 spins. The probability of spinning each color is . About how many times should Tamara expect the spinner to land on yellow? Let x represent the number of times the spinner lands on yellow.
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1b.) 50%
1c.) you can divide the number of events by the possible outcomes
1d.) Empirical Probability
2a.) divide, number
2b.) i’m not sure
the rest i’m not sure
A point is missing from the graph of the relation below. The relation is not a function.
help please give right answer
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The answer is d (-2,2)
The two dot plots below compare the forearm lengths of two groups of schoolchildren:
Based on the visual inspection of the dot plots, which group appears to have the longer average forearm length?
A. Group A, because a child in the group has the least forearm length of 10 inches.
B. Group A, because four children have a forearm length longer than 12 inches.
C. Group B, because no child in the group has a forearm length longer than 12 inches.
D. Group B, because five children in the group have the least forearm length of 10 inches.
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One afternoon, Dillon and 3 friends visit the zoo. They split the cost of parking the car evenly. Then each person buys a ticket to enter the zoo. By the end of the afternoon, each person has also purchased 2 bottles of water.
• Let p represent the parking cost.
• Let t represent the ticket cost.
• Let w represent the cost of a bottle of water.
Use the dropdowns to complete the statements.
(A) One way to express the total cost is to find the cost per person for a ticket and water. Then multiply this expression by
Choose...
and add
Choose...
.
(B) The expression for total cost described in part A is
Choose...
+
Choose...
.
(C) Another way to express the total cost is to add the cost of
Choose...
tickets plus the cost of
Choose...
bottles of water plus
Choose...
.
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Answer:
A. 3 then add p
B. 3(t+2w) + p
C. 3, 6, p
explanation:
(A) One way to express the total cost is to find the cost per person for a ticket and water. Then multiply this expression by
3
and add
p
(B) The expression for total cost described in part A is
3(t+2w)
+
p
(C) Another way to express the total cost is to add the cost of
3
tickets plus the cost of
6
bottles of water plus
p
Type a digit that makes this statement true.
2,748,40 is divisible by 4.
Submit
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WILL MARK BRIANLEST!!!!!!! PLS HURRY!!!!!!!!
What is the surface area of the square pyramid?
6 square meters
16 square meters
28 square meters
49 square meters
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Answer:
16 sq meters
Explanation
Surface area is the area of the figures combined. Find area of base and triangles then add.
2×2=4
2×3÷½=3
since there are 4 triangles you do 3×4
12+4= 16
B
to find the surface area of a square pyramid it’s- a=b•h2
How is finding the area of composite two-dimensional figures similar to finding the surface area of three-dimensional figures?
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Hope this helps, If not I’m sorry <3
Answer:
If you find the area of a 2D shape (ex-square) you would multiply the area by the amount of faces with the shape (that are the same shape)
PLEASE HELP ASAP 40 POINTS!!!!
The results of a random sample of 1,000 people are recorded in Table 1. Use this data to answer the questions that follow.
Table 1
people who wear corrective lenses 762
people who wear glasses 638
people who wear contact lenses 124
Part A
What percentage of Americans would you predict wear corrective lenses?
Part B
What percentage of Americans would you predict wear glasses?
Part C
What percentage of Americans would you predict wear contact lenses?
Part D
There are about 320 million people living in the United States. Of these, how many would you predict wear corrective lenses?
Part E
Of the 320 million people in the United States, how many would you predict wear glasses?
Part F
How many of the 320 million people in the United States would you predict wear contact lenses?
Question 2
A different random sample of 1,000 people yielded the results recorded in table 2. Use this data to answer the questions that follow.
Table 2
people who wear corrective lenses 745
people who wear glasses 618
people who wear contact lenses 127
Part A
What percentage of Americans would you predict wear corrective lenses?
Part B
What percentage of Americans would you predict wear glasses?
Part C
What percentage of Americans would you predict wear contact lenses?
Part D
How many of the 320 million Americans would you predict wear corrective lenses?
Part E
How many of the 320 million Americans would you predict wear glasses?
Part F
How many of the 320 million Americans would you predict wear contact lenses?
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t1
p.A69%
p.B58%
p.C43%
p.D~40%
p.E~30%
p.F~30%
t2
p.A~20%
p.B~30%
p.C35%
p.D~20%
p.E~40%
p.F~10%
i hope this helps have a nice day/night:)
HELP ME PLEASE!!
REMEMBER TO SHOW ALL WORK
THANK YOU!!
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Explanation: Sarah has 3 more than George, let’s minus out 3 first from 13. That will give us 10. Now, it has Sarah has twice as many books as George, so let’s divide 10 by 2. Now that will give us 5 and that’s the answer.
Explanation:
13 minus 3 = 10
10 divided by 2 is 5
I have no clue what this is and I’m gonna get a zero if I don’t finish this. [its literally the last assignment I have for the year]
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155 degrees
25 degrees
25 degrees
110 degrees
30.5 degrees
74 degrees
155°
25°
25°
110°
30.5°
74°
Without doing any calculations, compare expression A to expression B.
56 × 250 ( 13 × 250 ) + ( 12 × 250 )
Choose the words to complete the comparison.
Expression A is __________ expression B.
A. less than
B. greater than
C. equal to
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HELP PLEASE I NEED HELP
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Answer:
9-2=7
Step-by-step explanation:
The range of a data set is the maximum (highest) value/number subtracted from the minimum (lowest) value. So to find the range of this data set, you subtract the largest number 9 by 2 to get the range of 7.
Dalton got 15 notebooks for $1.75 each and 1 marker for $1.59.
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Answer:
15 x 1.75 + 1.59
Step-by-step explanation:
Dalton spent $26.25 on the notebooks, along with $1.59 for one marker; adding up to a $27.84 total.
Answer:
$27.84
Step-by-step explanation:
Given :
⇒ 15 notebooks for $1.75 each
⇒ 1 marker for $1.59
==============================================================
Solving :
⇒ Total cost = 15 × 1.75 + 1.59
⇒ Total cost = 26.25 + 1.59
⇒ Total cost = $27.84
Write the following in scientific Notation
1. 5,250
2. 1,230,000
Write the following back to standard form
3. 3.42 x 10^6
4. 1.45 x 10^4
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Answer:
1. 5.25 x 10^3
2. 1.23 x 10 ^6
3. 6420000
4 14500