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insens350 [35]
3 years ago
10

How you work out 7 (-5v-8)

Mathematics
2 answers:
yawa3891 [41]3 years ago
6 0
7(-5v - 8)
7(-5v) + 7(-8)
-35v - 56
Nuetrik [128]3 years ago
3 0
7(-5v-8)
distribute the 7 to the numbers in the parentheses
7 multiplied by-5v= -35v
7 multiplied by -8= -56
place them: -35v-56
hope i helped (theres a pic too!)

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Solve for x. 2(x + 14) + x = 70a. 11b. 12c. 14d. 17
Mariulka [41]

Hello!

To solve for the variable x, we need to follow the rules of SADMEP. SADMEP is ONLY used when solving algebraic equations. SADMEP is an acronym for subtraction, addition, division, multiplication, exponents, and parentheses. Also, when solving for x, our main goal is to isolate x to one side of the equation.

2(x + 14) + x = 70 (use the distributive property)

2x + 28 + x = 70 (simplify - add)

3x + 28 = 70 (subtract 28 from both sides)

3x = 42 (divide both sides by 3)

x = 14

When solving ANY algebraic equation, we need check our answer. To check your answer, you substitute the x-value, which is 14 in this case, into the original equation and solve using PEMDAS.

2(x + 14) + x = 70 (substitute x = 14)

2(14 + 14) + 14 = 70 (simplify the terms inside the parentheses)

2(28) + 14 = 70 (simplify - multiply)

56 + 14 = 70 (simplify - add alike term)

70 = 70 | This is correct!

Therefore, your final answer is x = 14, which is choice C.

6 0
3 years ago
Hi! I was wondering, how do you find the rise and the run of slopes? <br><br> I am new to it.
inna [77]

Answer:

M = (Y2 - Y1) / (X2 - X1)

Step-by-step explanation:

First, look at a graph of a line and find two points, 1 and 2. You can use any two points on a line. The slope will be the same between any two points on a straight line.

Note the X and Y value for each of the points.

Now we'll designate the X and Y value for points 1 and 2. We'll use subscripts to identify them in the slope formula.


Hope this helps!


4 0
3 years ago
Julia was creating similar triangles in the coordinate plane. The first triangle had a rise of 3 and a run of 10. The second tri
valina [46]

Yes julia is correct the run of the scond similar triangle will be b2=25.

<h3>What are simlilar traingles?</h3>

The similar triangle are those whose three sides or one angle or two sides or two angles one side are equal.

In the given:

Height of first triangle h=3

Base of first traingle =10

Height of second triangle =7.5

The base of second triangle b2 = ?

From the triangle similarity

\dfrac{h_1}{b_1}=\dfrac{h_2}{b_2}

\dfrac{3}{10}=\dfrac{7.5}{b_2}

b_2=\dfrac{7.5\times 10}{3}

b_2=25

Thus julia is correct the run of the scond similar triangle will be b2=25.

To know more about similar triangle follow

brainly.com/question/2644832

3 0
2 years ago
Set up a proportion and use cross multiplication to solve. 15 is what % of 60.
marissa [1.9K]
15 times percentage of 60 so i think it means it like 15/100 times 60/100
8 0
3 years ago
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Does somebody know how to find area of a trapizoid???
motikmotik

Answer:

To find the area of a trapezoid, multiply the sum of the bases (the parallel sides) by the height (the perpendicular distance between the bases), and then divide by 2.

Step-by-step explanation:

:) Hope this helps you with what you're working on!

5 0
2 years ago
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