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Misha Larkins [42]
4 years ago
5

What are the solutions to 2x^2+7x=4? Select all that apply.

Mathematics
1 answer:
Dovator [93]4 years ago
3 0
See attached image.

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Solve for x.<br><br> 4−(2x+4)=5
Lisa [10]
X=-2.5

4-(2x+4)=5
cancel out 4 and -4
-2x=5
-x=2.5
x=2.5
5 0
4 years ago
Read 2 more answers
A platinum metal bar measures 5.0 cm long, 4.0 wife, and 1.5 cm thick. It has a mass of 750.0 grams. What is the volume of the p
ioda
Just multiply:
5 cm*(4 cm)*(1.5 cm) = 30 cm^3
The formula of the volume is area of the base by the height.
3 0
4 years ago
The final exam grade distribution for all students in the introductory statistics class at a local community college is displaye
Alex73 [517]

The mean of the discrete distribution that models this situation is of 2.98.

<h3>What is the mean of a discrete distribution?</h3>

The expected value of a discrete distribution is given by the <u>sum of each outcome multiplied by it's respective probability</u>.

Considering the table, the probability distribution is given by:

  • P(X = 4) = 0.4.
  • P(X = 3) = 0.32.
  • P(X = 2) = 0.17.
  • P(X = 1) = 0.08.
  • P(X = 0) = 0.03.

Hence the mean is given by:

E(X) = 4 x 0.4 + 3 x 0.32 + 2 x 0.17 + 1 x 0.08 + 0 x 0.03 = 2.98.

More can be learned about the mean of a discrete distribution at brainly.com/question/27899440

#SPJ1

5 0
2 years ago
A tennis court is surrounded by a fence so that the distance from each boundary of the tennis court to the fence is the same, x
nevsk [136]

Given the information, we have the following:

since the distance from each boundary of the tennis court to the fence is the same (x feet), then we have:

therefore, the expression that gives the are of the entire surface inside the fence is A=(36+2x)(78+2x)

7 0
2 years ago
In need help in this
Lyrx [107]

Answer:

Vertex form is

a(x - h) {}^{2}  + k = y

where (h,k) is the vertex

So our vertex form is

a(x - 3) {}^{2}  + 5 = y

It passes through (6,0) so we have

a(6 - 3) {}^{2}  + 5 = 0

Solve for a.

a(3) {}^{2}  + 5 = 0

a(9) =  - 5

a =  \frac{ - 5}{9}

So our equation is

-  \frac{5}{9} (x - 3) {}^{2}  + 5

7 0
3 years ago
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