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cupoosta [38]
3 years ago
11

What is two minus Parentheses eight -5×6 parentheses?

Mathematics
2 answers:
Reil [10]3 years ago
6 0
-20 order of operations shows that we would do pemdas 2-(8-5*6)
-5*6=-30
8-30=-22
2-(-22)=-24
kiruha [24]3 years ago
4 0

Answer: 24

Step-by-step explanation:

2-(8-5x6) = 24

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How many solutions does the equation −3x−17=−17−3x have?
harkovskaia [24]

Answer:

an infinite number of solutions

Step-by-step explanation:

−3x −17 = −17 −3x

left side = right side  TRUE because -3x-17 is the same as -17-3x

we can rearrange  the the equation

−3x −17 +17 = −17 +17−3x, add 17 on both sides of the equations

            -3x = -3x, divide both sides by (-3)

               x = x

Since this equation is <u>always true ( for any number ) </u>we have <u>an infinite number of solutions</u> (since there are is an infinity of numbers.)

8 0
3 years ago
Is the Y value of the vertex of 4x squared plus 8X minus 8. help meee​
SIZIF [17.4K]

Answer:

y = -12

Step-by-step explanation:

You first calculate the x coordinate using the equation x = \frac{-b}{2a}, which in this case is \frac{-8}{8} = -1.

Then plug that x value into the equation to get the y coordinate:

4(-1)²+8(-1)-8 = -12

8 0
3 years ago
Kirsten has an area of 70 square feet for a flower garden. She plants 5 varieties of flowers equally in her garden. which ratio
katen-ka-za [31]

Answer:A flower garden occupies 57 portion of a park. If the park has an area of 14725sqm, find the area of the garden

Step-by-step explanation:

6 0
3 years ago
A statistics practitioner in a large university is investigating the factors that affect salary of professors. He wondered if ev
Ulleksa [173]

Answer:

Step-by-step explanation:

Hello!

Given the linear regression of Y: "Annual salary" as a function of X: "Mean score on teaching evaluation" of a population of university professors. It is desired to study whether student evaluations are related to salaries.

The population equation line is

E(Y)= β₀ + β₁X

Using the information of a n= 100 sample, the following data was calculated:

R²= 0.23

                Coefficient    Standard Error  

Intercept    25675.5           11393

x                  5321                  2119

The estimated equation is

^Y= 25675.5 + 5321X

Now if the interest is to test if the teaching evaluation affects the proffesor's annual salary, the hypotheses are:

H₀: β = 0

H₁: β ≠ 0

There are two statistic you can use to make this test, a Student's t or an ANOVA F.

Since you have information about the estimation of  β you can calculate the two tailed t test using the formula:

t= \frac{b - \beta }{\frac{Sb}{\sqrt{n} } } ~t_{n-2}

t= \frac{ 5321 - 0 }{\frac{2119}{\sqrt{100} } } = 25.1109

The p-value is two-tailed, and is the probability of getting a value as extreme as the calculated t_{H_0} under the distribution t_{98}

p-value < 0.00001

I hope it helps!

3 0
3 years ago
(X^-3)^-5x^6<br> A. X^21<br> B. X^-21<br> C. X^48<br> D. X^-48
stich3 [128]
The answer should be X^15X^6 but that doesn’t seem to be an option.

The photo is attached.
5 0
3 years ago
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