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VladimirAG [237]
1 year ago
13

Express x in terms of a, b, and c. X =

Mathematics
1 answer:
Vaselesa [24]1 year ago
8 0

Answer:

\frac{ac}{a+b} .

Step-by-step explanation:

1)  Δ ADE  ~  Δ ABC,   then

\frac{AE}{AC} =\frac{DE}{BC}    ⇒      \frac{x}{c} =\frac{a}{a+b};

2) \ finally, \ x=\frac{ac}{a+b} .

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erma4kov [3.2K]

Answer:

a. $3600

b. 6:5

Step-by-step explanation:

Put the question into an equation:

8x - 1/4 x 8x = 5x + 450

(simplify before solving) 6x = 5x + 450

(solve) 6x-5x = 450

x = 450

This means that Jimmy had 8 x 450 $ to start with = 3600

you can check this by subtracting a quarter of 3600 from 3600 and also multiplying 450 by 5 and then obtaining their difference. You get 450!

Now ratio of new amounts:

Jimmy now has: $2700

John still has: $2250

so ratio is 2700:2250

simplify to 6:5

Hope this helps

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3 years ago
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VikaD [51]

Answer:

x=41

Step-by-step explanation:

0.25(x-13)=7

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0.25(x-13)-(7)=0

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We add all the numbers together, and all the variables

0.25x-10.25=0

We move all terms containing x to the left, all other terms to the right

0.25x=10.25

x=10.25/0.25

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2 years ago
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Use Pythagorean identity to find x value and solve using formulas

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Step-by-step explanation:

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