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emmainna [20.7K]
3 years ago
8

Is (-2, -6) a solution to this system of equations? 3x + 18y = -14 15x − 7y = 12 yes no

Mathematics
1 answer:
soldi70 [24.7K]3 years ago
6 0

Answer:

No

Step-by-step explanation:

Plug in (-2, -6) to see if it's the solution or not

3(-2) + 18(-6) ?  -14

-6  + ( -108) ? -14

-114 ≠ -14

Answer is NO

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Which of the following statements is true?
wolverine [178]

Answer:

D: Point E is the midpoint of segment AC

Step-by-step explanation:

The midpoint is a point where it is in the middle of a line, line segment, or ray.

Congruent means something that is exactly the same.

Congruent triangles are two triangles are congruent if their corresponding sides are equal in length, and their corresponding angles are equal in measure.

Bisect means separating something into two precise and equal pieces/ angles.

Similar triangles means two objects are similar if they have the same shape, or one has the same shape as the mirror image of the other.

8 0
3 years ago
HELP THIS IS DUE SOON!!!
aev [14]

Answer:

x≥9

Step-by-step explanation:

Pretend the Less than or equal to sign is just an equals sign

-7x+7=-56 Solve:

-7x=-56-7

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For the last step, if you divide a negative number, the Sign switches. So not the sign is greater than or equal to.

x>=9

6 0
2 years ago
What is the y-value of the vertex of the function f(x)=−(x−3)(x+11)? −8 −4 33 49
alisha [4.7K]

Answer:

y - value of the vertex is 49.

Step-by-step explanation:

Given function is f(x) = -(x - 3)(x + 11)

f(x) = -(x² - 3x + 11x - 33)

     = -(x² + 8x - 33)

     = -(x² + 8x + 16 - 49)

     = -[(x + 4)² - 49]

     = -(x + 4)² + 49

Comparing this equation with the vertex form of a quadratic function,

f(x) = -(x - h)² + k

Where (h, k) is the vertex of the function.

Vertex of the parabola is (-4, 49)

Therefore, y-value of the vertex is 49.

4 0
2 years ago
Read 2 more answers
What is the slope of the line joining (8,8) and (12, 6)?
Anna71 [15]

Answer:

\huge \boxed{ \boxed{ -  \frac{1}{2} }}

Step-by-step explanation:

The slope of a line given two points can be found by using the formula

m =  \frac{ y_2 - y _ 1}{x_ 2 - x_ 1} \\

From the question we have

m =  \frac{6 - 8}{12 - 8}  =  -  \frac{2}{4}  =  -  \frac{1}{2}  \\

We have the final answer as

-  \frac{1}{2}  \\

Hope this helps you

6 0
2 years ago
The range for the given domain of the function f(x)=3x-6/x+4.5 is
mash [69]
Hello,

We can not divide by 0.

==> x+4.5≠0
==>x≠-4.5

dom f=R\{4.5}
4 0
2 years ago
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