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monitta
3 years ago
15

The sum of a number and seven is multiplied by four. The result is equal to negative twelve. The value of the number is __

Mathematics
2 answers:
Katarina [22]3 years ago
7 0
The correct value is -10.
7 plus negative 10 equals negative 3.
Negative 3 times 4 equals -12.
Or, (7+-10=-3•4=-12)
tia_tia [17]3 years ago
3 0

⟹Answer:

x = -10

⟹Step-by-step explanation:

<u>Lets Solve!</u>

⟹The first thing we must do is define our variables. Lets look at the problem again:

"The sum of a number and 7 is multiplied by 4. The result is equal to -12."

We can make <u>x the number that is being added</u> to 7.

The sum of x and 7 is multiplied by 4. This expression equals -12.

4(x+7) = -12

⟹Now we use distribute 4 amongst (x+7)

4(x+7) = -12

4x+28 = -12

Next we subtract 28 from both sides.

4x+28 = -12

4x = -40

Last we divide 4 on both sides.

\frac{4x}{4}  = \frac{-40}{4}

➧ x = -10

<u>Woohoo! Brainliest Appreciated! Hope I helped!</u>

You might be interested in
The first term of a sequence is -12. The recursive formula for the sequence is an = an-1 + 9. What are the next 3 terms in the s
Bess [88]
The next three terms are: -3, 6, and 15

To get each new term, we simply add 9 to the last term. So we add 9 to -12 to get -3. Then we add 9 to -3 to get 6. Finally we add 9 to 6 to get 15

In other words,
first term = -12
second term = first term+9 = -12+9 = -3
third term = second term + 9 = -3+9 = 6
fourth term = third term + 9 = 6+9 = 15

This process repeats forever though we only need three terms in this case.

So that's why the answer is the three values -3, 6 and 15
8 0
3 years ago
I needs some help pls
GrogVix [38]
Here is the order

- 6 2/3 ,- 1.3 , 29/8 , 7
5 0
3 years ago
Please help i don’t understand this
avanturin [10]

Answer:

Step-by-step explanation:

The solution is in the attached file

3 0
2 years ago
6x+32=−2x
velikii [3]
Whatever you do to one side, you have to do to the other.
Try to get all the x values and regular values together.
To do that, just subtract both sides by 6x to cancel it out on one side and subtract it from the other side:

6x-6x+32=-2x-6x
=
32=-8x
now divide both sides by -8 to get the x by itself

32/-8=-8/-8x
= 32/-8=x
-4=x
so your answer is: x= -4
5 0
3 years ago
What is the vertex form, f(x) = a(x − h)2 + k, for a parabola that passes through the point (1, −7) and has (2, 3) as its vertex
kondaur [170]

Answer:

Vertex form: f(x) = -10(x − 2)^2 + 3

Standard form: y = -10x^2 + 40x - 37

Step-by-step explanation:

h and k are the vertex coordinates

Substitute them in the vertex form equation:

f(x) = a(x − 2)^2 + 3

Calculate "a" by replacing "f(x)" with -7 and "x" with 1:

-7 = a(1 − 2)^2 + 3

Simplify:

-7 = a(1 − 2)^2 + 3

-7 = a(-1)^2 + 3

-7 = a + 3

-10 = a

Replace a to get the final vertex form equation:

f(x) = -10(x − 2)^2 + 3

Convert to standard form:

y = -10(x − 2)^2 + 3

Expand using binomial theorem:

y = -10(x^2 − 4x + 4) + 3

Simplify:

y = -10x^2 + 40x - 40 + 3

y = -10x^2 + 40x - 37

6 0
3 years ago
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