1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
AveGali [126]
3 years ago
5

Complete the solution of the equation. find the value of y when x equals -1. 8x - 2y= 10

Mathematics
2 answers:
garik1379 [7]3 years ago
8 0
Y is equal to negative 9

gogolik [260]3 years ago
7 0
X = -1.

Plug in the x-value.

8(-1) - 2y = 10
-8 - 2y = 10

Add 8 to both sides.

-2y = 18

Divide both sides by -2 to get y by itself.

y = -9

The value of y is -9.
You might be interested in
The minimum/maximum value of the function y = a(x − 2)(x − 1) occurs at x = d, what is the value of d?
daser333 [38]

Answer:

d=\frac{3}{2}=1.5

Step-by-step explanation:

We have the function:

y=a(x-2)(x-1)

And we want to find x=d for which the minimum/maximum value will occur.

Notice that our function is a quadratic in factored form.

Remember that the minimum/maximum value always occurs at the vertex point.

And remember that the x-coordinate of the vertex is the axis of symmetry.

Since a quadratic is always symmetrical on both sides of its axis of symmetry, a quadratic’s axis of symmetry is the average of the two roots/zeros of the quadratic.

Therefore, the value x=d such that it produces the minimum/maximum value is the average of the two roots.

Our factors are <em>(x-2) </em>and <em>(x-1)</em>.

Therefore, our roots/zeros are <em>x=1, 2</em>.

So, the average of them are:

d=\frac{1+2}{2}=3/2=1.5

Therefore, regardless of the value of <em>a</em>, the minimum/maximum value will occur at <em>x=d=1.5</em>.

Alternative Method:

Of course, we can also expand to confirm our answer. So:

y=a(x^2-2x-x+2)\\y=a(x^2-3x+2)\\y=ax^2-3ax+2a

The x-coordinate of the vertex is still going to be the place where the minimum/maximum is going to occur.

And the formula for the vertex is:

x=-\frac{b}{2a}

So, we will substitute <em>-3a</em> for <em>b</em> and <em>a</em> for <em>a</em>. This yields:

x=-\frac{-3a}{2a}=\frac{3}{2}=1.5

Confirming our answer.

4 0
3 years ago
Which of the following represents the equation below in intercept form?
krok68 [10]
<h2><u><em>Answer:  A) f (x) = (x-5) (x+8) </em></u></h2><h2><u><em></em></u></h2>

<u><em /></u>

<h2><u><em>Step-by-step explanation: Please tell me if this is wrong! Bye! Have a good day!</em></u></h2>

3 0
3 years ago
Read 2 more answers
Read the excerpt from "Introduction to Poetry" by Billy Collins.
Liono4ka [1.6K]

Answer: A

Step-by-step explanation:

when thinking about the figurative language we understand that you have to dig deeper for the answer just like poems lol, but the answer is A because when he says they are beating it with a hose to find out what it truly means it makes sense to criticize the way some readers try and understand poems. plus i got it right on the test kisses :)

if you want please mark me brain list :))))))

3 0
3 years ago
Read 2 more answers
At the gym, Jasper was able to bench press 224 pounds, which was 7/8 of the weight that Balin was able to bench press. Which sho
Rzqust [24]

Answer:

The answer SHOULD be 7/8=224/x;256 pounds.

You may have made a mistake in inputting it here on Brainly. So look for the one that matches that.

Step-by-step explanation:

This is what we know:

Jasper = 224 pounds

Balin = x

Jasper = 7/8 of x

Now we make an equation for that:

(\dfrac{7}{8})(x) = 224pounds

To match the selections we will isolate 7/8 on one side of the equation:

\dfrac{7}{8}=\dfrac{224}{x}

Using ratio and proportion we can solve for what x is. Multiply 224 by 8 and divide it by 7. Or you can do it this way too:

\dfrac{7}{8}=\dfrac{224}{x}

(7)(x)=(224pounds)(8)

7x=1792pounds

x=\dfrac{1792pounds}{7}=256pounds

So x = 256 pounds

7 0
3 years ago
Read 2 more answers
If i run a 5.31 second in 40 meter what would i run in a 40 yard dash
-Dominant- [34]

Answer:

im not sure , sorry... i wish i could have helped

5 0
3 years ago
Other questions:
  • The table of values shows the output values of three different equations for the same
    5·1 answer
  • The following triangles are similar. State the postulate or theorem that proves they are similar along with the correct scale fa
    8·1 answer
  • Find the cube of 0.5. A. 0.125 B. 0.25 C. 1.5 D. 1.25
    5·2 answers
  • **WILL MARK BRAINLEIST FOR TRUE ANSWERS!!!** 7th Grade Math
    9·1 answer
  • Solve:<br> h+9.7=-9.7<br> Thank you so much!
    13·2 answers
  • How do I use substitution to solve a system of linear equations?
    10·1 answer
  • Which statement best predicts the weather for Denver, Colorado on day 3.
    13·2 answers
  • Which of these is the equation that generalizes the pattern of the data in the table? Explain.
    7·1 answer
  • Translate. Eight less than the difference of a number and five is twelve.
    14·1 answer
  • A. P is equal to the set containing t,v,c and d
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!