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3 years ago

What are the solutions to the equation 3(x – 4)(x + 5) = 0?

Mathematics

1 answer:

wariber [46]3 years ago

3 0

Answer: x=4 or x= — 5

Step-by-step explanation:

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What is the value of x in 34 + 2x = 40

alekssr [168]

Hello from MrBillDoesMath!

Answer:

Discussion:

34 + 2x = 40 => subtract 34 from both sides

(34-34) + 2x = 40 - 34 => as (34-34) = 0 and 40-34 = 6

2x = 6 => divide both sides by 2

x = 6/2 = 3

Check the answer:

Does 34 + 2x = 40 if x = 3 ?

Does 34 + 2(3) = 40 ?

Does 34 + 6 = 40 ? YES! so the answer checks.

Thank you,

MrB

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2 years ago

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How would you find the x-intercept of f(x)=(x-4)^2-3?

Svetlanka [38]

The x -intercepts occur when f(x) =0
So,
(x-4)^2 = x^2 -8x + 16 -3 =0
x^2 -8x + 13 =0
Solving by the quadratic formula
x1 = 5.7321
x2 = 2.2679

8 0

3 years ago

Question

mars1129 [50]

Answer:

x=11

Step-by-step explanation:

2x+7=36
2x=36-7
2x=22
x=11

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3 years ago

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An investment broker puts 1/12 of his paycheck into a retirement account every quarter? How much of his $84,000 salary is put in

posledela

Answer:

<u>$7000</u> of his salary is put into this account each quarter.

Step-by-step explanation:

Given:

An investment broker puts 1/12 of his paycheck into a retirement account every quarter.

His salary is $84,000.

Now, to find how much is put into this account each quarter.

As given salary = $84,000.

So, amount to put into this account every quarter =

$\frac{1}{12} of\ \$84,000.$

$=\frac{1}{12} \times 84000$

$=\frac{84000}{12}$

$=\$7000.$

Therefore, $7000 of his salary is put into this account each quarter.

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3 years ago

7. An example for using estimation would be:

Aliun [14]

Guessing the number of pennies in a jar

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2 years ago

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