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3 years ago

A printer printed 68 letters in 4 seconds. If it prints letters at a constant speed, it can print ______ letters in 30 seconds.

1 answer:

6 0

We can write this as a proportion
68/4 = x/30
cross multiply
68 * 30 = 4x
2040 = 4x
divide both sides by 4
510 = x

It can print 510 letters in 30 seconds.

Hope this helps :)

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4 years ago

2x+3y when x=10 and y=5 how do i solve

chubhunter [2.5K]

Answer:

Step-by-step explanation:

When x=10 and y=5.. And 2x + 3y

Then put it as:

2(10) + 3 (5)

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3 years ago

Suppose you invest $75 a month in an annuity that earns 48% APR compounded monthly. How much money will you have in this account

il63 [147K]

Answer:

The money after 3 years is $5819.8735

Step-by-step explanation:

We are given

monthly payment =$75

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annuity that earns 48% APR

so, r=48%

Since, it is compounded monthly

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now, we can use annuity formula

$FV=P[\frac{(1+i)^n-1}{i} ]$

where

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now, we can plug values

$FV=75[\frac{(1+0.04)^{36}-1}{0.04} ]$

we get

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3 years ago

Solve for t: 18t=72 A)t=3 B)t=4 C)t= 1/3 D)t= 1/4

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Hi!

The 18 passes to the other side dividing.

18 t = 72

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Hope this helps, good studies! :)

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3 years ago

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