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3 years ago

I need the answers for those IMMEDIATELY ! Thank you!

Mathematics

1 answer:

Soloha48 [4]3 years ago

4 0

Answer:

Hope this helped.

Step-by-step explanation:

2:x=2y+20 y=1/2x-10

4:x=4/5y+15/5 y=5/4x-4

6:x=-2y+10 y=-1/2x+5

8:x=-7/3y+100/3 y=-3/7x+100/7

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6,000 dollars is invested in two different accounts earning 3% and 5% interest. At the end of one year, the two accounts earned

kap26 [50]

Answer:

$2000

Step-by-step explanation:

6,000 dollars is invested in two different accounts earning 3% and 5% interest.

Let x be the amount invested in account earning 3% interest

So, 6000-x is the amount invested in account earning 5% interest

$S.I. =\frac{P\times R\times T}{100}$

So, Simple interest for account earning 3% interest

$S.I. =\frac{x \times 3 \times 1}{100}$

$S.I. =0.03x$

Simple interest for account earning 5% interest

$S.I. =\frac{(6000-x) \times 5 \times 1}{100}$

$S.I. =0.05(6000-x)$

$S.I. =300-0.05x$

Since we are given that the two accounts earned $220 in interest

So, $0.03x+300-0.05x=220$

$−0.02x+300=220$

$80=0.02x$

$\frac{80}{0.02}=x$

$4000=x$

So, 4000 was invested at 3%

(6000-x)=6000-4000=2000 was invested at 5%

Hence 2000 was invested at 5%

8 0

3 years ago

A triangle has a base of 10 inches and a height of 4.5 inches. What is the area of the triangle in square inches?

STatiana [176]

Answer:

22.5

Step-by-step explanation:

10 x 4.5 = 45 divided by 2 is 22.5

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igomit [66]

Hello!

An equivalent fraction is a fraction that is equal to another but is just written different. For example 1/2 and 3/6. They are both one half of the whole. 3/6 is just put into smaller pieces, but they equal the same thing.

I hope this helps!

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3 years ago

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2 years ago

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