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valina [46]
4 years ago
12

The product of a number and 2 is 20 less than the product of the number and -3. What is the number?

Mathematics
1 answer:
SOVA2 [1]4 years ago
6 0
<h3><u>answer</u><u>:</u></h3>

<em>x</em><em> </em><em>=</em><em> </em><em>-4</em>

<h3><em>steps</em><em>:</em></h3>

Let the number = x (set up an equation)

2x = -3x - 20

add 3x to both sides

5x = -20

divide by 5 on both sides

<u>x</u><u> </u><u>=</u><u> </u><u>-4</u>

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41/1000 written as a decimal?
dmitriy555 [2]

Answer:

When dividing by 1,000 the decimal place must shift 3 places to the left.

43 can be written as 43.

Shifting the decimal 3 places to the left gives us:

.043

Step-by-step explanation:

3 0
4 years ago
Help please will mark best answer
77julia77 [94]
I figured out the first question, the second one in lost on.

\frac{(6-x)}{x^2+3x-28} / \frac{x^2-36}{x^2+5x-36}

Factor both of the equations, numerator and denominator

\frac{(6-x)}{(x+7)(x-4)}*  \frac{(x+6)(x-6)}{(x+9)(x-4)}

Cancel the like factors *excuse the zero im just showing you*

\frac{(0)}{(x+7)} *\frac{(x+6)}{(x-9)}

Combine frunctions

\frac{(6+x)}{(x-9)(x+7)}

x-9=0
x+7=0

Restrictions are 9 and -7
4 0
4 years ago
<img src="https://tex.z-dn.net/?f=%20%20%5Csqrt%7B2%20-%207x%7D%20%20%2B2x%20%3D%200" id="TexFormula1" title=" \sqrt{2 - 7x} +
FrozenT [24]

Answer:

√(2 - 7x) + 2x = 0

√(2 - 7x) = - 2x

[√(2 - 7x)]² = (- 2x)²

2 - 7x = 4x²

4x² + 7x - 2 = 0

4x² + 8x - x - 2 = 0

4x(x + 2) - (x + 2) = 0

(4x - 1)(x + 2) = 0

4x - 1 = 0 => 4x = 1 => x₁ = 1/4

x + 2 = 0 => x₂ = - 2

7 0
3 years ago
Which expression is NOT equivalent to 4×38? A. 4×(3×18) B.(4×3)×18 C. (4×18)×3 D. (4×3)×(4×18)
uysha [10]

Answer:

Every choice is not equivalent to 4✖️38.

Step-by-step explanation:

4✖️38=152

A. 54✖️4=216

B. 12✖️18=216

C. 72✖️3=216

D. 12✖️72=864

Every choice is not equivalent to 4✖️38.

3 0
3 years ago
mrs. kennedy is buying pencils for each of 315 students iat hamilton elematery.the pencils are sold in box of tens.how can she u
Natasha_Volkova [10]
She gonna need to buy 32 boxes because 315 divided by 10 is 31 r 5 and also you can't buy 31 boxes because 5 kids aren't gonna have pencils so she needs to buy 32 boxes of pencils
6 0
3 years ago
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