3 years ago

What is the equation of a line that has a slope of -1/2 and goes through the point (-2,4) ?

Mathematics

1 answer:

yarga [219]3 years ago

4 0

Answer:

y-2=-1/2(x+2)

Step-by-step explanation:

y-y1=m(x-x1)

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A scuba diver is 12 meters below sea level. If the diver descends 39 meters further, what integer represents the scuba diver’s n

marusya05 [52]

I think the answer is -51

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3 years ago

Solve for a:8-4(a-1)=2+3(4-a)

OLga [1]

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3 years ago

If a 12-student class averaged 90 on a test, and a 20-student class averaged 80 on the test, then all 32 students averaged

Alexxx [7]

Let the marks of the students in class 1 be

$m_1, m_2, ....., m_1_2$

the average of these 12 marks is 90, so

$\frac{m_1+ m_2+ .....+ m_1_2}{12}=90$

which means

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similarly, let $n_1, n_2, ....., n_2_0$ be the marks of the students in the second class,

so $\frac{n_1+ n_2+ ..... n_2_0}{20}=80$

which means $n_1+ n_2+ ..... n_2_0=80*20=1600$

The 32 students averaged:

$\frac{(m_1+ m_2+ .....+ m_1_2)+(n_1+ n_2+ ..... n_2_0)}{12+20}= \frac{1080+1600}{32}= \frac{2680}{32}= 83.75$

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3 years ago

Read 2 more answers

This is hard, but I really need help!

sukhopar [10]

Please see pic, I'd solved in it.