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2 years ago

PLEASE HURRY

Mathematics

1 answer:

Delvig [45]2 years ago

4 0

Answer:

Answer 2) When dividing by -5, he did not change the $\leq$ to $\geq$ .

Step-by-step explanation:

If you divide or multiply a negative, you ALWAYS change the sign to its opposite.

Hope this helps! :)

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Vanessa and Richie are riding their bikes down a trail to the next campground. Vanessa rides at 16 mph while Richie rides at 3 m

Eduardwww [97]

He has been riding for and hour. he had gone 1.5 miles after 30 minutes and Vanessa started biking. after 30 MORE minutes, he had gone 3 miles while she had gone 8 miles. 8-3=5.

6 0

2 years ago

If AD is the altitude to BC, what is the slope of AD?

anygoal [31]

Answer:

Option (C)

Step-by-step explanation:

If AD is the altitude to BC, both the segments AD and BC will be perpendicular to each other.

By the property of perpendicular lines,

$m_1\times m_2=-1$

where $m_1$ is the slope of the line AD and $m_2$ is the slope of BC.

$m_2=\frac{y_2-y_1}{x_2-x_1}$

$=\frac{8+2}{3-7}$

$=-\frac{5}{2}$

Now from the given property,

$m_1\times (-\frac{2}{5})=-1$

$m_1=\frac{5}{2}$

Therefore, slope of altitude BC = $\frac{5}{2}$

Option (C) will be the answer.

3 0

3 years ago

What is the sum of all integers between 19 and 77 squared rooted?

Alex Ar [27]

4<√19<5
8<√77<9
so the quality numbers are 5,6,7,and 8
5+6+7+8=26
so the answer is 26

4 0

3 years ago

— 4х + 7y = 20<br> у = 3х + 15

Angelina_Jolie [31]

Answer:

x=-5

Step-by-step explanation:

$-4x+7(3x+15)=20\\ -4x+21x+105=20\\ 17x+105=20\\ 17x=20-105\\ 17x=-85\\ x=-5$

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2 years ago

Could someone give me the answer please

o-na [289]

Answer:

the top one, (-1,3)

Step-by-step explanation:

5 0

2 years ago

Read 2 more answers