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UNO [17]
3 years ago
7

8×9=(5+3)×9 just need help with the answer

Mathematics
1 answer:
Svetllana [295]3 years ago
3 0

Answer:

It is true.

Step-by-step explanation:

8 multiplied by 9 is 72.   5+3 is 8, which is multiplied by 9, giving the same answer on both ends.

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Find the perimeter of the figure below. Notice that one side length is not even.
Alecsey [184]
The answer is 46. the side length that is not even is 5ft because if you do the 13 - 8 you will get the missing side.
8 0
2 years ago
Solve the quadratic equation by completing the square.<br> x^2+2x-2=0
astraxan [27]

The solution to the quadratic equation by completing the square is x = -1 + √3, x = -1 - √3

<h3>What is a quadratic equation?</h3>

Any equation of the form \rm ax^2+bx+c=0  where x is variable and a, b, and c are any real numbers where a ≠ 0 is called a quadratic equation.

As we know, the formula for the roots of the quadratic equation is given by:

\rm x = \dfrac{-b \pm\sqrt{b^2-4ac}}{2a}

We have a quadratic equation:

x² + 2x - 2 = 0

x² + 2x + 1 - 1 - 2 = 0

(x + 1)² - 3 = 0

(x + 1)² = 3

x + 1 = ± √3

x = -1 ± √3

Thus, the solution to the quadratic equation by completing the square is x = -1 + √3, x = -1 - √3

Learn more about quadratic equations here:

brainly.com/question/2263981


#SPJ1

5 0
2 years ago
In the diagram above, Z1 = 40°.<br> Find the measure of Z2.<br> Z2 = [?]°
harkovskaia [24]

Answer:

40 = <2

Step-by-step explanation:

<1 and  <2 are corresponding angles and corresponding angles are equal when the lines are parallel

<1 = <2

40 = <2

6 0
2 years ago
Read 2 more answers
The null hypothesis in the Durbin-Watson test is always that there is a. negative autocorrelation. b. no autocorrelation. c. eit
Kamila [148]

Answer:

b. no autocorrelation.

Step-by-step explanation:

The Durbin-Watson test assumes that

H0:ρ=0

HA:ρ≠0

p=0 is a statement for the null hypothesis that assumes that the error term in one period is not correlated to the error term in the previous period.

The Durbin-Watson test is used in regression analysis to test for autocorrelation. The results from the test would always range from 0 to 4. A value of less than 2.0 indicates positive autocorrelation. A value of 2.0 indicates no autocorrelation, and a value of 2.0 to 4.0 indicates negative autocorrelation.

3 0
3 years ago
What is 3y+5x=-15 written in slope-intercept form
Kipish [7]
Slope-intercept form is y=mx+b, so we simply have to solve for y...

3y+5x=-15  subtract 5x from both sides

3y=-5x-15  divide both sides by 3

y=-5x/3-5  or more neatly in my opinion...

y=(-5x-15)/3
7 0
3 years ago
Read 2 more answers
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