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12345 [234]
2 years ago
5

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>

  1. Subtract 2 on both sides: x = -9

Step 3: Check

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

  1. Substitute: 2 - 9 = -7
  2. 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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∠G and ∠H are supplementary; m∠G = (x + 4)° and m∠H = (4x + 11)°. What is the measure of ∠G? What is the measure of ∠H?
iogann1982 [59]

Answer:

∠G =  37°

∠H = 143°

Step-by-step explanation:

As we know ,

Sum of supplementary angles is 180 degrees.

Hence sum of ∠G and ∠H  is also 180 degrees

∠G + ∠H = 180

Substituting the given values in above equation, we get -

(X+4) + (4X +11) = 180\\5X + 15 = 180\\5X = 165\\X = 33

∠G = (x + 4)° = (33 + 4)° = 37°

∠H = (4x + 11)° = (33*4 + 11)° = 143°

3 0
2 years ago
Michael cycled a distance of miles in hours. What is his cycling unit rate in miles per hour?Michael cycled a distance of miles
notka56 [123]

Answer:

The number of miles/the number of hours

Step-by-step explanation:

If the number of hours is not equal to 1, multiply the numerator and denominator by the inverse of the number of hours.

For example, 10 (miles)/2 (hours)

The inverse of 2 is 1/2, so --> the new equation is 10/2 * 1/2 / 1/2 or

10* 1/2 and 2 * 1/2

When multiplied out, this leads to 5/1 or 5 miles per hour

8 0
3 years ago
Please calculate the volume of the triangular prism (MIDDLE SCHOOL MATH)​
k0ka [10]

Answer:

52.374 cm*3

Step-by-step explanation:

the upper triangle is equal to the bottom triangle

Btw fyi the formula of calculating the value of a prism is:

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3 0
3 years ago
Help me with this please everyone
cupoosta [38]
First, let's simplify each expression by combining like terms:

A: 9x-3x-4 = 6x-4

B: 12x-4 = 12x-4 (Already Combined terms)

C: 5x+x-4 = 6x-4

When looking at the list of equations, it is clear that only Expression A and C are equivalent. Brianna failed to combine like terms and plug in more points than 0. 

I Hope this Helps!
-Sinnamin

3 0
3 years ago
When graphing a linear inequality in two variables, explain how to determine which side of the boundary line to shade. Please he
Murrr4er [49]
\ \textgreater \ means you shade the part above the line, and \ \textless \ means you shade the part under the line.

If it has an equal bar under it, like this: \leq  or \geq, then you also shade the line, by making it solid instead of dotting it.
8 0
3 years ago
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