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2 years ago

How do you solve 2+x=-7

Mathematics

2 answers:

Mars2501 [29]2 years ago

7 0

Answer:

x = -9

Step-by-step explanation:

Step 1: Write equation

2 + x = -7

Step 2: Solve for <em>x</em>

Subtract 2 on both sides: x = -9

Step 3: Check

<em>Plug in x to verify it's a solution.</em>

Substitute: 2 - 9 = -7
Subtract: -7 = -7

Orlov [11]2 years ago

3 0

In order to solve this linear equation, we need to group all the variable terms on one side, and all the constant terms on the other side of the equation. In our example,
- term 2, will be moved to the right side.
Notice that a term changes sign when it 'moves' from one side of the equation to the other.
Therefore, the answer is x=-9

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Pyramid A is a right square pyramid with a height of 100 m and a square base with a perimeter of 356 m. Pyramid B has a square b

Tomtit [17]

Answer:

The volume of pyramid B is 3.5 times greater than the volume of pyramid A

Step-by-step explanation:

The area of squared based a pyramid is given by:

$Area = \frac{1}{3}*s*s*h$

Where 's' the length of the side of the base and 'h' is the height.

For pyramid A:

h= 100 m

s= 356/4 = 89 m

$Area_A = \frac{1}{3}*89*89*100\\Area_A=264,033.33\ m^3$

For pyramid B:

h= 215 m

s= 456/4 = 114 m

$Area_B = \frac{1}{3}*114*114*215\\Area_B=931,380\ m^3$

Pyramid B has a greater volume and the ratio between volumes is:

$\frac{Area_B}{Area_A} =\frac{931,380}{264,033.33}\\\frac{Area_B}{Area_A} =3.5$

3 0

3 years ago

Logan is 2 years older than Lindsey .Five years ago, the sum of their age was 30 . Find Lindsey's current age

marusya05 [52]

X is 2 more than y
x=2+y

5 years ago (x-5 and y-5)
sum is 30
x-5+y-5=30
x+y-10=30

x=2+y
sub 2+y for x
2+y+y-10=30
2y-8=30
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2y=38
divide both sides by 2
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Lindsey is 19

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2 years ago

Read 2 more answers

Please help I will mark branliest

Sladkaya [172]

3 because a polygon has 3 or more sides

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Vlad [161]

Answer: Cost of tickets for adults = $22

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