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STatiana [176]
3 years ago
9

PLEASE HELP MEEEE!!!!!

Mathematics
1 answer:
grandymaker [24]3 years ago
5 0

Answer:

midpoint is (2, -3 )

Step-by-step explanation:

The midpoint can be found with the formula {(x1+ x2 )/2, (y1 + y2.)/2.} ( x1 , y11 ), and (x2 , y 2 ) are the coordinates of two points, and the midpoint is a point lying equidistant and between these two points.

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The quadratic formula can be used to solve an equation only if the highest
shtirl [24]
Quadratic refers to x^2 so the quadratic formula can be used to solve an equation only at the highest degree in the equation is a two/squared
8 0
4 years ago
Find the value of x in the picture below.
lilavasa [31]

Answer:

I think that the answer is 2.5 , the second item .

4 0
3 years ago
The local swim team is considering offering a new semi-private class aimed at entry-level swimmers, but needs a minimum number o
SCORPION-xisa [38]

Answer:

The significance level is \alpha=0.01 and since we are conducting a right tailed test we need to find a critical value who accumulate 0.01 of the area in the right of the normal standard distribution and we got:

z_{\alpha/2}= 2.326

So we reject the null hypothesis is z>2.326

Step-by-step explanation:

For this case we define the random variable X as the number of entry-level swimmers and we are interested about the true population mean for this variable . On specific we want to test this:

Null hypothesis: \mu \leq 15

Alternative hypothesis: \mu > 15

And the statistic is given by:

z =\frac{\bar X -\mu}{\frac{\sigma}{\sqrt{n}}}

The significance level is \alpha=0.01 and since we are conducting a right tailed test we need to find a critical value who accumulate 0.01 of the area in the right of the normal standard distribution and we got:

z_{\alpha/2}= 2.326

So we reject the null hypothesis is z>2.326

7 0
3 years ago
Find the base of a parallelogram with a height of 7cm and an area of 63 cm2
densk [106]

Answer:

9cm

Step-by-step explanation:

The formula for the area of a parallelogram is base x height.

You have the height, 7cm, and the area, 63cm^{2}[/tex].

So the equation is B x 7 = 63. Simply take 63 divided by 7 and you get 9.

Answer: 9cm

6 0
3 years ago
9x+5=8x+15 solve for x
timurjin [86]
9x+5=8x+15
9x-8x=15-5
X=10
5 0
4 years ago
Read 2 more answers
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