2 years ago

Please help me with this - its about percent changes

Mathematics

1 answer:

Serhud [2]2 years ago

6 0

Answer:

110.06

Step-by-step explanation:

Make a ratio: 95.20 / x = 86.5 / 100 (86.5 = 100% - 13.5%)

Cross multiply: 95.20 x 100 = 86.5x

9520 = 86.5x

110.06 = x

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Answer:

-100/10

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answer is-10

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3 years ago

Which expression represents the total cost

SSSSS [86.1K]

Answer:

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Step-by-step explanation:

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Could someone help me understand how to solve this?

monitta

Answer:

Amount in 4% account: $550

Step-by-step explanation:

Use simple interest formula $I=P\cdot r\cdot t,$ where

I = interest

P = principal

r = rate (as decimal)

t = time.

4% account:

$P_1=x\\ \\r_1=0.04\\ \\t_1=1,$

then

$I_1=x\cdot 0.04\cdot 1=0.04x$

5% account:

$P_2=1,500-x\\ \\r_2=0.05\\ \\t_2=1,$

then

$I_2=(1,500-x)\cdot 0.05\cdot 1=0.05(1,500-x)$

You have earned $69.50 in total, so

$I_1+I_2=69.50\\ \\0.04x+0.05(1,500-x)=69.50\\ \\4x+5(1,500-x)=6,950\\ \\4x+7,500-5x=6,950\\ \\4x-5x=6,950-7,500\\ \\-x=-550\\ \\x=550\\ \\1,500-x=1,500-550=950$

Amount in 4% account: $550

Amount in 5% account: $950

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2 years ago

What is the classification of the following triangle. scalene, isosceles, or right

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Answer:

scalene!!!

Step-by-step explanation:

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2 years ago