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ivanzaharov [21]
3 years ago
15

What is the solution to the equation -5 =8m +12 /4

Mathematics
2 answers:
Stolb23 [73]3 years ago
6 0
-5 =8m + \frac{12}{4} \\ \\ -5 = 8m + 3 \\ \\ -5 - 3 = 8m \\ \\ -8 = 8m \\ \\ - \frac{8}{8} 
=m \\ \\ -1 = m \\ \\ m = -1 \\ \\ Answer: \fbox {m = -1}
Dima020 [189]3 years ago
3 0
m = -1

-5 = 8m + 12/4
-5 - 12/4 = 8m
4(-5) - (12/4) = 4(8m)  
 
*to remove the denominator, multiply each figure by 4.

-20 -12 = 32m
-32 = 32m
-32/32 = 32m/32
-1 = m

m = -1

To check:

-5 = 8m + 12/4
-5 = 8(-1) + 3
-5 = -8 + 3
-5 = -5

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denis-greek [22]
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Probability of not selecting gray =12/14

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But pink is in 5

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5 0
3 years ago
FAST PLEASE!! Emma weighs half as much as Sonya. Sonya weighs 120 pounds. How much
Andrew [12]

Answer:

I think it would be 120

Step-by-step explanation:

You add 120+120 and it would equal 240. Then 240 dived by 2 which will equal 120.

(120 + 120)= 240 dived by 2= 120 I might be wrong

3 0
3 years ago
Complete the sentence.
igomit [66]

Answer: 3|x| = 3x when x \geq 0 and 3|x| = -3x when x < 0

Step-by-step explanation: Absolute value basically refers to the distance of a point from the origin (zero), regardless of the direction. The absolute value of a number is represented by two vertical lines enclosing the number. For example, |6| = 6, or in this case, 3|x| = 3x. Here, the value is replaced by the term "x". "x" is used as a term for an unknown value/variable. so basically, we're solving for x kinda. Multiplying "x" (the unknown variable) by 3 gives us = 3x. We know from the sign \geq that x <u>can't be below zero</u>, only <u>above or equal to</u>. So, 3lxl = 3x when x is above or equal to the origin (zero). We know from the second problem that x <u>can't be above zero </u>because of the sign <, only <u>below zero</u>. Because we can only go below zero, that positive 3 turns negative. Multiplying x by -3 gives us = -3x. So, 3|x| = -3x when x is blow the origin (zero).

Note: <u>the absolute value of a number is always positive</u>, but in this scenario this rule doesn't apply because "x" is not a number, only a unknown value.

Sorry in advance if my explanation still doesn't make sense. Math isn't my thing really.

3 0
3 years ago
-8.67, 7, 8, 740% greatest to least​
dusya [7]

Answer: Greatest to least: 8 | 7.4(740%) | 7 | -8.67

Step-by-step explanation: To solve this problem all you need to know if number place values and how to change a percent to a decimal.

4 0
4 years ago
Factor this expression completely, then place the factors in the proper location on the grid.
andreev551 [17]

Notice that you have a difference of cubes:

\dfrac{x^3}8-\dfrac{y^3}{27}=\left(\dfrac x2\right)^3-\left(\dfrac y3\right)^3

which can be factored using the rule,

a^3-b^3=(a-b)(a^2+ab+b^2)

So,

\dfrac{x^3}8-\dfrac{y^3}{27}=\left(\dfrac x2-\dfrac y3\right)\left(\dfrac{x^2}4+\dfrac{xy}6+\dfrac{y^2}9\right)

and just to make things look nicer, we can pull out 1/6 from the first factor and 1/36 from the second to get

\dfrac{x^3}8-\dfrac{y^3}{27}=\dfrac1{216}(3x-2y)(9x^2+6xy+4y^2)

4 0
4 years ago
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