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Agata [3.3K]
3 years ago
12

Find the product 5X(4X2)

Mathematics
2 answers:
svetoff [14.1K]3 years ago
7 0
The answer is forty (40).
igor_vitrenko [27]3 years ago
5 0
5x (4x2)
--->
5x * 4x = 20x^2
5x * 2 = 10x
20x^2 * 10x
<---
20x^2
_____
10x
= 2x
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In ΔOPQ, the measure of ∠Q=90°, PO = 97, OQ = 65, and QP = 72. What is the value of the tangent of ∠O to the nearest hundredth?
garri49 [273]

Answer: 1.11

Step-by-step explanation:

with tangent I guess A+B=C, B goes over A. But like I bet you're wondering how will yk which is a or b? idk either, but I tried my luck and got it right. So yk how C (hypotenuse) is always the biggest number? Well whichever number is bigger (A or B) the bigger number will go over the smaller one and then you round it to the nearest hundredth. I'm not good at rounding, so I used Math//way to get it for me. So it could be like , 12+36=40 (just picking random numbers), 36 will go over 12. And then you round it. I hope thus makes sense, it's 5:40AM rn. I should be sleep  because I have a job interview at 3PM today.

3 0
3 years ago
Jim is standing beside a pool. He drops away from 4 feet above the surface of the water in the pool. The weight travels a total
Levart [38]
The weight is dropped from 4 feet above the surface. Add -12 to represent the distance the weight falls before it hits the bottom. 4+(-12)=8. The water is 8 feet deep.
(Prezi online)
3 0
3 years ago
Consider triangle GHJ.
bulgar [2K]

we know that

<u>Applying the Pythagorean Theorem</u>

JG^{2} =HJ^{2}+HG^{2}

solve for HJ

HJ^{2}=JG^{2}-HG^{2}

in this problem we have

JG=10\ units\\ HG= 5\ units

Substitute the values in the formula above

HJ^{2}=10^{2}-5^{2}

HJ^{2}=100-25

HJ^{2}=75

HJ=\sqrt{75}=5\sqrt{3} \ units

therefore

<u>the answer is the option</u>

B. 5 sq. root 3 units

5 0
3 years ago
Read 2 more answers
Use the given data to find the equation of the regression line. x 44 44 11 11 55 y 66 55 negative 1−1 negative 3−3 88 ModifyingA
Temka [501]

Answer:

y=1.98 x -24.34

Step-by-step explanation:

Assuming the following data

X: 44, 44, 11, 11, 55

Y: 66, 55, -1, -3, 88

We want to find a linear model Y= mx +b

For this case we need to calculate the slope with the following formula:

m=\frac{S_{xy}}{S_{xx}}

Where:

S_{xy}=\sum_{i=1}^n x_i y_i -\frac{(\sum_{i=1}^n x_i)(\sum_{i=1}^n y_i)}{n}

S_{xx}=\sum_{i=1}^n x^2_i -\frac{(\sum_{i=1}^n x_i)^2}{n}

So we can find the sums like this:

\sum_{i=1}^n x_i =44+44+11+11+55=165

\sum_{i=1}^n y_i =66+55-1-3+88=205

\sum_{i=1}^n x^2_i =7139

\sum_{i=1}^n y^2_i =15135

\sum_{i=1}^n x_i y_i =10120

With these we can find the sums:

S_{xx}=\sum_{i=1}^n x^2_i -\frac{(\sum_{i=1}^n x_i)^2}{n}=7139-\frac{165^2}{5}=1694

S_{xy}=\sum_{i=1}^n x_i y_i -\frac{(\sum_{i=1}^n x_i)(\sum_{i=1}^n y_i)}{n}=10120-\frac{165*205}{5}=3355

And the slope would be:

m=\frac{3355}{1694}=1.98

Nowe we can find the means for x and y like this:

\bar x= \frac{\sum x_i}{n}=\frac{165}{5}=33

\bar y= \frac{\sum y_i}{n}=\frac{205}{5}=41

And we can find the intercept using this:

b=\bar y -m \bar x=41-(1.98*33)=-24.34

So the line would be given by:

y=1.98 x -24.34

4 0
3 years ago
Please help me out!!❤️
Aleks04 [339]
Natalie would have been making a mistake from the beginning because any non-zero expression raised to the power of zero is one.

So she would have been making a mistake from step one
4 0
3 years ago
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