3 years ago

If a+ar =b+r the value of an item of b and r can be expressed as

Mathematics

1 answer:

Dennis_Churaev [7]3 years ago

5 0

$a+ar=b+r\\
a(1+r)=b+r\\
a=\dfrac{b+r}{1+r}$

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If the length of JK is 3x and the length of LM is 12x and the length of the entire line JM is 25x , find the length of KL.

Leona [35]

Answer:

10x.

Step-by-step explanation:

It is given that,

JK = 3x

LM = 12x

JM = 25x

Let as consider the line as shown in the below figure.

From the figure it is clear that,

$JK+KL+LM=JM$

$3x+KL+12x=25x$

$KL+15x=25x$

$KL=25x-15x$

$KL=10x$

Therefore, the length of KL is 10x.

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3 years ago

You buy 3.18 pounds of peaches, 1.45 pounds of apples, and 2.06 pounds of pears. What is your total bill?

Mrrafil [7]

Answer:

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3 years ago

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Pretest: Unit 5 Question 12 of 21 Use the substitution method to solve the system of equations. Choose the correct ordered pair.

Gala2k [10]

Answer:

(10, - 9 )

Step-by-step explanation:

Given the 2 equations

y = - 2x + 11 → (1)

y = - 3x + 21 → (2)

Substitute y = - 2x + 11 into (2)

- 2x + 11 = - 3x + 21 ( add 3x to both sides )

x + 11 = 21 ( subtract 11 from both sides )

x = 10

Substitute x = 10 into either of the 2 equations and evaluate fir y

Substituting into (1)

y = - 2(10) + 11 = - 20 + 11 = - 9

solution is (10, - 9 )

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3 years ago

Which expression can be used to find the value of the expression below -4(5 + (-2)

guapka [62]

Answer:

-12

Step-by-step explanation:

-4(5+(-2))=-4(5-2)=-4(3)=-12

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3 years ago

Trisha was making muffins from scratch. She scooped out 2 cups of all-purpose flour and estimated that it weighed 250 grams. Whe

Mice21 [21]

Answer:

first, she should have measured one cup of flower then estimated how much another one would weigh, and added the results together.

Step-by-step explanation:

hope it helps have a good day

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2 years ago