3 years ago

If a:b = 3:4 and b:c= 5:7, find a:c. WORKING OUT NEEDED.

Mathematics

1 answer:

mixer [17]3 years ago

5 0

Answer:

3:7

Step-by-step explanation:

a:b

a=3

b=4

b:c

b=5

c=7

a:c

3:7

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A clothing store is selling T-shirts at 2 for $15. If Michael purchases 8 T-shirts, how much money will he spend?

deff fn [24]

Answer:

$60

Step-by-step explanation:

2 T-shirts = $15

Longer version

15/2 = $7.50

1 T- shirt = $7.50

7.50*8 = $60

Short version

2 T-shirts = $15

bought 8 so 8/2 = 4

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8 0

3 years ago

Solve each by elimination <br> 4x - y = 105<br> x + 7y = -10

Svet_ta [14]

Answer:

point form:

(25, -5)

Equation form:

x= 25, y= -5

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3 years ago

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Ivahew [28]

Answer:

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Step-by-step explanation:

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4 years ago

Read 2 more answers

1. Jeremy has $12000 cash to invest in the bank compounded at 4% interest annually.

gavmur [86]

Answer:

$A(x) = 12000(1.04)^x$

Step-by-step explanation:

Compound interest:

The compound interest formula is given by:

$A(t) = P(1 + \frac{r}{n})^{nt}$

Where A(t) is the amount of money after t years, P is the principal(the initial sum of money), r is the interest rate(as a decimal value), n is the number of times that interest is compounded per year and t is the time in years for which the money is invested or borrowed.

$12000 cash

This means that $P = 12000$