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Juliette [100K]
2 years ago
15

Find the slope of a line that goes through the two points (-1, 1) and (-3, -7).

Mathematics
2 answers:
Natasha2012 [34]2 years ago
8 0

Answer:

4

Step-by-step explanation:

\frac{-7 - 1}{-3-(-1)} = \frac{-8}{-2} = 4

il63 [147K]2 years ago
3 0

Answer:

the slope of the line is <u>4</u><u> </u><u>and</u><u> </u><u>the</u><u> </u><u>working</u><u> </u><u>is</u><u> </u>in the attached picture

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John has × marbles and max has twice as many.max give gives john 5 of his marbles does max now have
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Answer: 2x -5

Step-by-step explanation:

Hi, to answer this question we have to write equations with the information given:

  • <em>John has × marbles  </em>

John=x

  • <em>Max has twice (multiplied by 2) as many.max give gives john 5 of his marbles. </em>

We have to multiply by 2 the number of marbles that John has (x), and subtract 5.  

Max = 2x -5

Feel free to ask for more if needed or if you did not understand something.  

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3 years ago
There are 5 classes with 22 students per class ordering pizza. One pizza feeds 5 people. Which of the following is a good estima
Phantasy [73]

Answer:

i would say about 20 or 30 pizzas

Step-by-step explanation:

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3 years ago
Read 2 more answers
Approximate the change in the volume of a sphere when its radius changes from r = 30 ft to r=10.1 ft [v(r)=4/3Ï€r^3]. When r cha
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Answer: ∆V for r = 10.1 to 10ft

∆V = 40πft^3 = 125.7ft^3

Approximate the change in the volume of a sphere When r changes from 10 ft to 10.1 ft, ΔV=_________

[v(r)=4/3Ï€r^3].

Step-by-step explanation:

Volume of a sphere is given by;

V = 4/3πr^3

Where r is the radius.

Change in Volume with respect to change in radius of a sphere is given by;

dV/dr = 4πr^2

V'(r) = 4πr^2

V'(10) = 400π

V'(10.1) - V'(10) ~= 0.1(400π) = 40π

Therefore change in Volume from r = 10 to 10.1 is

= 40πft^3

Of by direct substitution

∆V = 4/3π(R^3 - r^3)

Where R = 10.1ft and r = 10ft

∆V = 4/3π(10.1^3 - 10^3)

∆V = 40.4π ~= 40πft^3

And for R = 30ft to r = 10.1ft

∆V = 4/3π(30^3 - 10.1^3)

∆V = 34626.3πft^3

3 0
3 years ago
If Elisa gets an allowance of $35 per week and spends $10 of it on food and drink, $5 on entertainment and $5 on miscellaneous t
Maslowich

Answer:

15$

Step-by-step explanation:

35-10=25$

25-5=20$

20-5=15$

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3 years ago
write an equation in point-slope form of the line that passes through the point (-2,4) and has a slope of 5
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