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2 years ago

Solve the proportion: 20/16 = x/80 question 19 options: 6.25 1600 100 160

1 answer:

8 0

$\dfrac{20}{16}=\dfrac{20:4}{16:4}=\dfrac{5}{4}\\\\\dfrac{5}{4}=\dfrac{x}{80}\ \ \ \ |cross\ multiply\\\\4x=5\cdot80\\\\4x=400\ \ \ \ |divide\ both\ sides\ by\ 4\\\\\boxed{x=100}$

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Pls can anybody give me the code to join khan academy online classes

Dahasolnce [82]

Answer:

your teacher has to give it to you :)

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Step-by-step explanation:

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1 year ago

What does a equal in 1/2(a-7)=33?

Dmitriy789 [7]

To find a, you need to isolate/get the variable "a" by itself in the equation:

$\frac{1}{2} (a-7)=33$ Multiply the inverse of 1/2, which is 2, to get rid of the fraction

$(2)\frac{1}{2}(a-7)=(2)33$

a - 7 = 66 Add 7 on both sides to get "a" by itself

a - 7 + 7 = 66 + 7

a = 73

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2 years ago

Margot has 21 1/2 pounds of flour 8 pounds of butter and 18 1/2 ponds of sugar to make shortbread cookies if she makes 12 batche

adell [148]

Answer:

4 pounds of ingredients are used in each batch.

Step-by-step explanation:

Amount of flour = $21\frac{1}{2}pounds = \frac{43}{2}pounds$

Amount of butter = 8 pounds

Amount of sugar = $18\frac{1}{2}pounds= \frac{37}{2} pounds$

So, the total amount of all ingredients will be: $(\frac{43}{2}+\frac{37}{2}+8)pounds = (\frac{43+37+16}{2}) pounds= \frac{96}{2} pounds = 48 pounds$

Given that, she makes 12 batches of cookies using all the ingredients.

Thus, the amount of ingredients used in each batch $=\frac{48}{12} pounds = 4 pounds$

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2 years ago

Are the triangles congruent? a-yes b-no c-not enough information

ioda

the right answer is yes

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2 years ago

I'll give u brianliest if you share the answer and how you got it

Bogdan [553]

Answer:a is 52 b is 65

Step-by-step explanation:

a:Write 65% as 65100.

65100 of 80 = 65100 × 80.

Therefore, the answer is 52. If you are using a calculator, simply enter 65÷100×80 which will give you 52 as the answer.

b: it is 65 because it is the same question but in reverse which still gives you the same answer.

Hope this helps

please give brainlyist

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2 years ago

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