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4 years ago

Factor the expression. 40z – 20

Mathematics

2 answers:

erik [133]4 years ago

7 0

$40z - 20$

$GCF=20
$

$20 ( \dfrac{40z}{20} - \dfrac{20}{20})$

$20(2z-1)$

artcher [175]4 years ago

5 0

Answer:

20(2z – 1)

TTM ;)

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3 years ago

Multiply: (2x2 − 5x)(4x2 − 12x + 10)

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4 years ago

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

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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

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

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3 years ago

What is the solution to the equation?

monitta

Answer:

It B. X=12

Step-by-step explanation:

Stay home and safe

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3 years ago