Answer:
(-1, 8)
Step-by-step explanation:
Make y the subject:
x + y = 7 ⟹ y = -x + 7
1. Substitute the value for y into 7x + y = 1 and solve for x:
7x + (-x + 7) = 1
7x - x + 7 = 1
6x + 7 = 1
6x + 7 - 7 = 1 - 7
6x = -6
6x ÷ 6 = -6 ÷ 6
x = -1
2. Substitute the given value of x into x + y = 7 and solve for y:
x + y = 7
-1 + y = 7
-1 + 1 + y = 7 + 1
y = 8
Therefore, the solution to this system of equations is: (-1, 8).
Learn more here:
brainly.com/question/2648990
which is faster: drive a car at a rate of 40 kilometers per hour or drive a car at a rate of 15 meters per second
Answer:
Step-by-step explanation:
Let's convert one of these measurements so that both measurements have the same units. 15 m/sec is equivalent to 0.015 km/sec, which in turn is equivalent to
0.015 km 3600 sec
--------- -------- ----------------- = 54 km/hr
1 sec 1 hr
This latter result (54 km/hr) is faster than (40 km/hr).
A square pyramid on top of a rectangular prism. The rectangular prism has a length of 4 meters, width of 4 meters, and height of 4 meters. The square pyramid has triangular sides that have a height of 3 meters and side length of 5 meters. Compare the surface area of the composite figure to the surface area to the combined surface areas of the figures if they were separated. The composite surface area would be the surface area of the rectangular prism plus the surface area of the square pyramid considered separately. You should not count the pyramid’s as part of the composite figure’s surface area.
Answer:
The square pyramid by itself has a surface area of 55 meter[tex]s^2[/tex].
The rectangular prism by itself has a surface area of 96 meter[tex]s^2[/tex].
Step-by-step explanation:
Answer:
La pirámide cuadrada por sí sola tiene una superficie de 55 metros .
El prisma rectangular por sí solo tiene un área de superficie de 96 metros .
Step-by-step explanation:
Type a digit that makes this statement true.
32,324,44
is divisible by 6.
Answer:
Step-by-step explanation:
it’s is divisible because it is also divisible by 2 ( they all end in even numbers) and 3 ( because if you add it’s numbers it gives you a multiple of 3)
The cost of
3
bags of grapes is normally
$
9.36
, but they are on sale for
$
7.59
. What is the savings for each bag?
Answer:
The answer will be one dollar and 77 cents ($1.77)
Step-by-step explanation:
$9.36
-$7.59
—————
$1.77
ill give brainly and 30 points
Answer:
D) 22x + 99
Step-by-step explanation:
9 (2x+9) + 2(2x + 9)
18x + 81 + 4x + 18
22x + 81 + 18
22x + 99
Find the volume of the rectangular pyramid. If needed round two decimal places
Answer:
126
Step-by-step explanation:
V = lwh/3 = 7*6*9/3 = 126
Someone help its math 50 points
Answer:
i think it is (-1,0)
Step-by-step explanation:
if you graphed the points this option makes the most sense
Melanie goes to a shelter to buy a dog. She has settled on to two dogs, An Alsatian and a bulldog. To decide them, she plans to flip a coin. Before she does, she flips the coin 50 times to check for fairness of the model. Her results are shown in the table.
Coin Toss Result:
Times Result Occurred
Heads : 24
Tails : 26
The relative frequency of landing on heads is [ ]. The relative frequency of landing on tails is [ ].
Please answer ASAP.
Type a digit that makes this statement true.
180,
93 is divisible by 9.
Submit
Money Tracker (Additional Instructions in Photo)
Take a screenshot of the following photo and !!SHOW ALL WORK!!
Please help, this assignment will boost my grade up to an A+!
(I have a lot more I need help with too! If you can help. It’s all math)
Answer:
You have to add all the money up then subtract it by the following money you earned.
Step-by-step explanation:
45.35+45.25= 90.5
1.39x75=104.25
0.68x8=5.44
68.72x2=137.44
1.85x37=68.45
0.13x900=117
52.85x12=634.2
52.85x2=105.7
19.49x3=58.47
2750-1321.45=1428.55
(the number 1321.45 came from everything added together, which i then subtracted from 2750 to get 1428.55 as your remaining balance.
Evaluate each expression, Giving the answer in Scientific notation.
1) 5.3 x 10^4 + 4.7 x 10^4
2) 3.7 x 10^6 - 3.3 x 10^6
3)4.8 x 10^-3 + 6.3 x 10^-3
4)6.6 x 10^-5 - 6.1 x 10^-5
In which class was his scores the closest to:
Answer:
Theater
Step-by-step explanation:
MAD stands for Mean Absolute Devastation, which is the average difference between numbers/data.
pls help me outttttt
Type a digit that makes this statement true.
32,324,44
is divisible by 6.
Submit
Answer:
444
Step-by-step explanation:
444 is answer. it is very easy. 444/6= 74
Find the area of the clock
Use 3.14 for pi
Area = PI x radius^2
The diameter is given as 25 inches, the radius is 1/2 the diameter.
Radius = 25/2 = 12.5 inches
area = 12.5^2 x 3.14
Area = 490.625 square inches
Daily Math Question
You can identify sample spaces for compound events using organized lists, tables, and tree diagrams. Which of the three methods do you find easiest to use? Which method is the most helpful? Why?
What is the definition of the Fundamental Counting Principle? What does this principle state? How can the principle be used to help you identify a sample space for a compound event? What are the limitations of using the Fundamental Counting Principle when determining the probability of an outcome? Support your answers with an example.
Answer:
The fundamental counting principle is used to count the total number of possible outcomes that are in a situation.
What does the fundamental counting principle state?
The fundamental counting principle states that if there are n ways of doing something, as well as m ways of doing another thing, then there are n×m ways to perform both of these actions.
The Fundamental Counting Principle helps when determining the sample space of probability as it figures out the total number of ways the combination of events can occur. Therefore, it is used as a guide when determining the sample space of a probability.
Lastly, the limitation is that the Fundamental Counting Principle is that it assumes that each basic event is equally probable, which does not necessarily have to be true.
Whoever helps gets brainliest!
4 miles per hour
Step-by-step explanation:Unit rate is the rate of something per 1 unit. In other words, the unit rate is x units per 1 unit. In this situation, the unit rate is how many miles Hassan walks in 1 hour.
Proportion
First, to find the rate of anything we can set up a proportion. In the question, the rate is described as miles per hour, so the miles will be the numerator and the hours will be the denominator.
This creates the proportion [tex]\frac{12miles}{3hours}[/tex]So, the rate we are given is 12/3.
Unit Rate
To find the unit rate we need to make the denominator equal to 1. To do this, divide both the numerator and denominator by 3.
12/3 equals 43/3 equals 1So, this means that the new proportion is 4/1. Next, we can add our units, which means that Hassan walks 4 miles per 1 hour.
Graph
Now we can resize the bar graph. The purple bar should be set to 4 because this represents the miles. Then, the green bar should be set to 1 because it represents the hours.
In ABC, mB is 3 times mA and mC is 4 degrees less than 6 times mA. What equation is used to solve for the variable x? Find the measure of each angle.
Answer:
mark me brainlist please
Help please. I will do brainlyist later.
the dot above the -2 is not solid so -2 is not part of the solution.
Answer: a) x < -2
Answer:
A
Step-by-step explanation:
Open dot means less than or greater than not equal to
Have a nice day :)
5/6x + 2/3x + = 7
x=
Use cymath.com for sure.
When I typed your question there it said the simplified answer was, x = 0
NEED HELO FAST!
Which of the following statements is true for 5.78?
A) It's rational because 5.78 = 526/2 33.
B) It's irrational because 5.78 = 5.787878.
C) It's irrational because 5.78= 5.787878.
D) It's rational because 5.78 = 5.787878.
its rational - 5.78 = 5.787878.
D.
explanation:
We have been given a number 5.78. We are asked to choose the correct statement which shows that 5.78 is a rational number.
Upon looking at our given choices, we can see that only option A is the correct choice as it has repeating digits (78) after decimal.
We know that a number with repeating decimals can be written as a fraction, therefore, option D is the correct choice.
Answer:
hello
Step-by-step explanation:
its D
Eighth grade A.2 Divisibility rules VW5
You have prizes to rev
There are 86,784 fish in a hatchery, which are divided evenly among the ponds. How many
ponds could there be at the hatchery?
Select all the possible numbers.
3
6
4
2
Submit
Type here to search
OC
,C
Answer:
3, 6, 4, 2
Step-by-step explanation:
The factors of 86784 are :
1 * 86784
2 * 43392
3 * 28928
4 * 21696
6* 14464
Can you help me please? I need this ASAP
Answer:
Top left and right
Step-by-step explanation:
simply multiply the first number of Y with X
Hope this helps
Can someone help me pls its math and due today
Answer:
It’s 1, 7 bc that’ll finish the square
Solve the system of equations by substitution. show all the steps needed to solve.
2x+3y=19
y=9
3x+9y=42
y=2x
2x + 5y=22
x=3y
x=2y
3x + 2y=2
x+3y=11
x+4y=14
A spherical water balloon is filled such that it has a diameter of 9 inches. Water is then released from the balloon until it has a diameter of 7.2 inches. What volume of water was released from the balloon?
Answer:
5
Step-by-step explanation:
seven point two and 9 imches
dory is buying a square shaped canvas with an area 144 squared inches. which shows the correct steps she should take if she wants to find out the side lengthes of the canvas
Answer:
sqrt 144
Step-by-step explanation:
formula for area of a square us s^2,
s^2 = 144
square root both sides
An equation was used to predict possible weights of puppies at 6 months of age. The actual weights of the puppies are also listed.
Actual weight (ounces) 9 15 16 20 20 26
Predicted weight (ounces) 9 12 15 18 21 24
The sum of the residuals is ______.
0
7
9
26
What is the volume of this prism?
A.) 72 ft³
B.) 80 ft³
C.) 84 ft³
D.) I don't know.
Answer:
The answer would be 72 feet. (A)
Step-by-step explanation:
To find the volume of the prism you would do length times width time height. That would be 4 times 3 times 6. 4 times 3 is 12 and 12 times 6 is 72, getting you your answer. I hope this helps! :)
Mr. Perry took his family out to
dinner last night and their subtotal
was $88.24. The sales tax was 5%
and he left a 20% tip. If Mr. Perry
put $120 on the table, how much
change did he receive?
[Show Work Please]
Answer: $8.83
Step-by-step explanation:
Facts:
Total before extra fees: $88.24
Sales tax: 5%
plus a 20% tip afterwards.
Gave $120
Change= ?
___________
Step 1: Add the sales tax
The first thing to do is find 5% of 88.24, since the sales tax was 5% of the cost of their dinner.
5% of 88.24= 4.41200---> $4.40
Now we add it to the subtotal.
4.40+ 88.24= $92.64
Step 2: Add the 20% tip.
Since the question puts the "20% tip" statement after the 5% tax, I'm going to assume that the 20% tip is 20% of the dinner cost after the tax was added.
So the new cost is 92.64. All you need to do is find 20% of 92.64, and then add the result to 92.64. Look:
20% of 92.64= 18.528--> $18.53
18.53+92.64= $111.17
Now, there we have the total cost of dinner.
Step 3: Find how much change he got.
So now we know the total cost is $111.17, and that he paid with $120. He obviously paid more than the total cost, so to find the amount of change, simply subtract the 111.17 from 120:
120-111.17= $8.83
He recieved $8.83 in change because he paid $8.83 more than the expected balance (actual total cost).
Hope this helps :)) Also brainliest would be appreciated, i worked pretty hard on this :)
Answer:$8.82 Change
Step-by-step explanation:
88.24*1.20=105.89. 105.89*1.05=111.18
$120-$111.18=$8.82 change.
(Whew! That took a while!)