3 years ago

What is negative three, times 4x plus 2

Mathematics

1 answer:

alexgriva [62]3 years ago

4 0

-10 or X=1.25

hope this helps

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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

8 0

3 years ago

Someone help me please!!!!

Ghella [55]

I am pretty sure number 3 is the right answer

8 0

3 years ago

Which monomial is a perfect cube? 16x6 27x8 32x12 64x6

miss Akunina [59]

The fastest way is to just use a scientific calculator.

To do it without a calculator, use prime factorization.

I'll only do the second one which is the answer.

27 x 8

= 3^3 x 2^3 = 6^3

Which is a perfect cube.

5 0

3 years ago

Read 2 more answers

How to simplify 2mg x 5m²k

Damm [24]

hey, I'm not sure about this answer, but I think it's true, sorry

m(2g+5mk)

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3 years ago

What is 8.21 as a mixed number

babymother [125]

8 21/100 is your answer! :)