Given the ratio 12:4,create three more ratios that are proportional to the given ratio. Explain your thinking and how you got your answer.
Answers
Related Questions
A biologist was sitting near a pond and noticed a large number of dragonflies. He also saw both frogs and fish trying to eat the
dragonflies. He counted a total of 89 fish, frogs, and dragonflies. He noticed that there were four times as many dragonflies as fish and
that the frogs were five more than twice the number of fish
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89 /3
frogs = 29.6
fish = 29.6
dragonflies = 29.6
all of them equal 89
a = fish = 12
b = frog = 29
c = dragonflies = 48
a + b + c = 89
c = 4a (four times as many dragonflies as fish)
b = 2a + 5 (frogs were five more than twice the number of fish)
Then substitute for b and c in the big equation:
a + (2a + 5) + 4a = 89
Combine like terms:
7a + 5 = 89
Subtract 5 from both sides:
7a = 84
Divide both sides by 7:
a = 12
Now use this to solve for b and c
c = 4(12) = 48
b = 2(12) + 5 = 24 + 5 = 29
Please let me know if you have any questions.
Which equation has the same solution as
x2+4x-13=-7
Answers
Answer:
6x - 3 + 4x = 13
10x - 3 = 13
10x = 16
x = 1.6
Any equation whose solution is x=1.6 has the same solution as this one has.
Step-by-step explanation:
Solve the system of equations 3x+2y=223x+2y=22 and -4x+3y=16−4x+3y=16 by combining the equations.
Answers
Answer:
(2, 8)
Step-by-step explanation:
Given the system of equation
3x+2y=22 ... *4
-4x+3y=16 .... *3
Using the elimination method
12x + 8y = 88
-12x + 9y = 48
Add
8y + 9y = 88+48
17y = 136
y = 136/17
y = 8
Recall that
3x+2y=22
3x+2(8)=22
3x + 16 = 22
3x = 22-16
3x = 6
x = 6/3
x = 2
Hence the required solution (x, y) is (2, 8)
Help plz and the first and second options are.
First : any side,any two side,any three side
Second: less the. 90 degrees,greater then 90 and exactly 90
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Second: Exactly 90°
Which side lengths form a right triangle?
Choose all answers that apply:
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Answer:
A
Step-by-step explanation:
9, 12, 15 is a multiple of 3, 4, 5 which is a right triangle
Answer:
A. 9, 12, 15
Step-by-step explanation:
A. [tex]9^{2} +12^{2} =15^{2}[/tex]
B. [tex]6^{2} +2^{2}\neq\sqrt{38}^{2}[/tex]
C.[tex]3^{2} +9^{2} \neq \sqrt{91} ^{2}[/tex]
Find an equation of variation in which y varies directly as x and y = 60 when x = 0.4. Then find the value of y when x = 2
Answers
Answer:
y = 300
Step-by-step explanation:
The equation of variation in which y varies directly as x is written Mathematically as:
y ∝ x
y = k × x
y = kx
Where k = Proportionality Constant
We find k
a) y = 60 when x = 0.4.
60 = 0.4 × k
k = 60/0.4
k = 150
b) find the value of y when x = 2
y = kx
k = 150
Hence,
y = 150 × 2
y = 300
i need help with this if you help me i will mark you as brainliest if its right please dont put the answer in a file
Answers
Answer:
more than 7
Step-by-step explanation:
4+3 = 7
)sorry if i was wrong(
Answer: D
Step-by-step explanation:
You are just moving mn, so the length does not change. Its the same, just in different spots.
State if the triangles in each pair are similar. Remember a) AA/SAS/SSS
b) prove it. C) write a similarity statement.
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Note how we have a segment that is also 4 units long in the other triangle; however, we won't use that one just yet. Instead, we'll go for the 2 unit segment. As it turns out, every piece of the triangle on the right side is half that of the left side triangle.
Segment ED is 2 units long. So AB and ED pair up
------------------------------
BC is 8 units long; DF is 4 units long (half of BC). So BC and DF pair up
I started at A, went to B, then to C in that exact order marking the side lengths of 4 and 8 respectively. At the same time for the other triangle, I started at E, moved to D, then to F recording the side lengths 2 and 4
So A pairs up with E, B pairs with D, and C pairs with F
Therefore, triangle ABC is similar to triangle EDF. The order is very important so that the points line up and correspond in the proper manner.
I used the SSS (side side side) similarity theorem to prove the triangles similar. This theorem says that if the sides are in proportion to one another, then the triangles are similar.
If 5 boys write 5 pages in 5 minutes,
in how many minutes can one boy
write one page?
Answers
Answer:
A boy can write one page in one minute
Answer:
5 minutesethhgdsyujjj
solve (i) 4/15+x=17/30
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Answer:
3/10
Step-by-step explanation:
4/15+x=17/30
x=17/30-4/15
x=17/30-8/30
x=9/30
simplify
x=3/10
hii please help i’ll give brainliest
Answers
Answer:
-19
Step-by-step explanation:
Answer:
-19
hope it helps. Plz mark brainliest!
explanation:
To find its opposite, change the negative sign to a positive sign. The answer is that the opposite of 19 is -19.
Which inequality correctly compares 1/2, 3/4, and 2/3
Answers
Answer:
3/4>2/3>1/2
Step-by-step explanation:
put into decimal form
1/2 = 0.5
2/3 = 0.66666666666
3/4 = 0.75
Help with #10 I’ll give brainleist.
Answers
Answer:
Step-by-step explanation:
A looks like the only good answer
The account is not decaying... or going down, it's going up at about 4.5% per year. so the 5,000 is what is the initial investment, and the 1.045 is the amount it's going up by, where the exponent of 't' is how many times it's going up
Simplify:
-2(3x-1) + x(3x+2)
Answers
Answer:
-4x+3x power of 2 +2
Step-by-step explanation:
Answer:
3x² - 4x + 2
Step-by-step explanation:
distribute -2 into (3x - 1) and distribute x into (3x + 2)
=> -6x + 2 + 3x² + 2x
combine like terms
=> 3x² - 4x + 2
what is the probability of that event's complement?
Pinot landing on heads
a) 1/2
b) 2/1
C 1/1
d) 1/4
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find the slope of a line through the points (-1,5) and (7,-11)
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Answer:
-2
Step-by-step explanation:
Find the surface area. Urgent!
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Answer:
306 cm²
Step-by-step explanation:
Sorry if this is wrong doing mental math
Find the value of x in OQ. 5x-6
2x+9
Need help with this question asap!!
Answers
Answer:
[tex]\huge\boxed{\sf x = 5}[/tex]
Step-by-step explanation:
Since, the chord is being bisected by the diameter (being divided into two equal parts). Hence,
5x - 6 = 2x + 9
5x - 2x = 9 + 6
3x = 15
Divide both sides by 3
x = 15 / 3
x = 5
[tex]\rule[225]{225}{2}[/tex]
Hope this helped!
~AH1807$100 are shared between Adam and Hamza in the ratio 1:3.
A)
How many dollars did Adam receive?
How many dollars did Hamza receive?
Answers
Answer:
$25 for Adam and $75 for Hamza
Step-by-step explanation:
$100 will be divided to 3 + 1 = 4 parts
the dollars Adam received
= $100 × 1/4
= $25
the dollars Hamza received
= $100 × 3/4
= $75
-----------------------------------------------------------
the dollars Hamza give to Adam
= $75 × 25%
= $75 × 25/100
= $18.75
the dollars Adam have
= $25 + $18.75
= $43.75
the dollars Hamza have
= $75 - $18.75
= $56.25
the ratio
= 43.75：56.25
= 7：9
Help pls in three it’s homework don’t really have much time left
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Answer:
3. Blanks from top to bottom: 3, 9, 54, 62
5. Blanks from top to bottom: 2, 8, 4, 80, 640
Step-by-step explanation:
Use PEMDAS!
3.
6 × (36 ÷ 12)^2 + 8 = 6 × (___)^2 + 8
Solve for the left side to find the blanks:
6 × (3)^2 + 8
6 × 9 + 8
54 + 8
62
5.
320 ÷ (11 - 9^3/2) × 8 = 320 ÷ (___^3/2) × 8
Solve for the left side to find the blanks:
320 ÷ (2^3/2) × 8
320 ÷ (8/2) × 8
320 ÷ 4 × 8
80 × 8
640
A triangle has three angles that measure 25 degrees, 75 degrees
(7x + 10). What is the value of x?
Answers
Answer:
x=10
Step-by-step explanation:
Suppose you add or subtract two quadratic trinomials that use the same variable. What are the possible classifications for the sum or difference? Explain.
Please help me asap. T.T
Answers
Answer:
quadratic monomial, quadratic trinomial, constant monomial, linear monomial, quadratic binomial, linear binomial.
Step-by-step explanation:
two quadratic trinomials each have a degree-2, degree-1, and degree-0 term. It is possible that the coefficients of all or some of the terms cancel each other while adding or subtracting the polynomials.
Answer:
Here is the answer. Hope this helps Sorry it's blurry but you have to click on it and you will see the answer
Step-by-step explanation:
Find the product of 22.4 and 0.51
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Answer:
11.424 is the product of 22.4 x 0.51
12 + 6x > 18
HELPPppp
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Answer:
I used math-way, solved for x and got this
x>1
Step-by-step explanation:
6x + 12 > 18
6x + 12− 12 > 18 − 12
6x > 6
6x/6 > 6
x>1
I did not pay attention to the class- so can someone explain how to do dis type of problem- and the answers-
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which questions ..??????
How many combinations with repetition are allowed if n = 5 and r = 3?
120
125
10
35
Answers
Answer:
35
Step-by-step explanation:
Since repetition is allowed, we use the equation
((n+r-1)!/(r!(n-1)!) = 7!/(3!x4!) = 35
If x+2y=12 and x-y=3 find the value of x+y
Answers
x-y=3
x=3+y
X+2y=12
(3+y) + 2y=12
3y+3=12
3y=9
Y=3
X-(3)=3
X=6
X+y
6+3=9
A kind teacher gives you 20 cents for every question you get right, but you have to pay the
teacher 10 cents for every question you get wrong. After 30 questions you have made a
profit of $1.80.
a ) Form an equation with x representing the number of questions you got right.
b )Solve your equation to find how many questions you got right.
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Answer:
Let n be the number of questions you got right. Then
30-n equals the number of questions you got wrong.
So:
A) 20n-10(30-n)=180
30n-300=180
30n=480
n=16
30-n=14
B)You got 16 questions right and 14 questions wrong.
2x - 2y = -6,
2x + y = 9
Solve for the system of solutions and find the value of X and Y
x =
y =
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Answer:
y=3 and x= 9/2
Step-by-step explanation:
Answer:
x=7
y=-5
Step-by-step explanation:
ive tryed the elimination way
(2x-2y=-6)-
(2x+y=9)
=-3y=-15
y=-5
2x+-5=9
2x=9-(-5)
2x=14
x=7
how abt that
what is the measure of angle 1?
Answers
Answer:
option a. 90°
angle 1=90°