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2 years ago

Please help 7,8,9 and 10

Mathematics

1 answer:

lukranit [14]2 years ago

5 0

Answer:

7. 6

8. 8

9. 13

10. 10

Step-by-step explanation:

A midsegment is halfway between the vertex and the opposite base segment. Its end points are midpoints of the sides. It is half the length of the base segment.

7. x = 6

8. x = 8

9. x = 26/2 = 13

10. x = 2·5 = 10

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Find the length of diagonal HJ. Round to the nearest hundredth.

Alisiya [41]

Answer:

The length of the diagonal HJ is 10.82 units

Step-by-step explanation:

* Lets revise the rule of the distance between two points

- $d=\sqrt{(x_{2}-x_{1})^{2}+(y_{2}-y_{1})^{2}}$ , where

$(x_{1},y_{1})$ and $(x_{2},y_{2})$ are the two points

* Lets use this rule to find the length of the diagonal HJ

∵ The coordinates of point H are (-4 , 3)

∵ The coordinates of point J are (5 , -3)

∴ $x_{1}=-4$ and $x_{2}=5$

∴ $y_{1}=3$ and $y_{2}=-3$

- Lets find the length of the diagonal HJ by using the rule above

∴ HJ = $\sqrt{(5-(-4))^{2}+(-3-3)^{2}}=\sqrt{(5+4)^{2}+(-6)^{2}}$

∴ HJ = $\sqrt{(9)^{2}+36}=\sqrt{81+36}=\sqrt{117}=10.81665$

∴ HJ = 10.82

* The length of the diagonal HJ is 10.82 units

7 0

3 years ago

Pls help me and thank you if you help me out

Marina CMI [18]

Answer:

I think it would be C.

Step-by-step explanation:

One is positive Four is negative so is 1+(-4)

4 0

3 years ago

Examine the figure. What is the measure of angle a?

pantera1 [17]

A = 180-90-31

A = 59

Answer: 59

4 0

3 years ago

HELP ASAP!! 10 points!

masha68 [24]

$\dfrac{5}{7}\ of\ 100:\\\\\dfrac{5}{7}\cdot100=\dfrac{5\cdot100}{7}=\dfrac{500}{7}=\dfrac{70+28+2}{7}=\dfrac{70}{7}+\dfrac{28}{7}+\dfrac{2}{7}\\\\=10+4+\dfrac{2}{7}=14\dfrac{2}{7}\\\\\dfrac{2}{7}\ \text{is smaller than}\ \dfrac{1}{2}.\ \text{Therefore}\ 14\dfrac{2}{7}\approx14\\\\Answer:\ \boxed{14}$

7 0

3 years ago

What is the domain of this graph?

jolli1 [7]

Answer:

B 0 ≤x≤9

Step-by-step explanation:

The domain is the input values of the graph. In this graph it is the values that the time variable takes.

Time can take 0 seconds to 9 seconds

0 ≤x≤9

8 0

3 years ago