Help with 10-14 questions plz

Mathematics

1 answer:

lesya [120]3 years ago

3 0

#10) 63,945 cubic inches.
#11) PRISM A = 120 cubic inches. PRISM B = 960 cubic inches. Prism B is 8 times greater in size.
#12) 58.4375 cubic centimeters.
#13) 58.5 inches.
#14) 3,860 grams.

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What is the point slope form of (-7,5) , (1,-1)

qwelly [4]

Answer:

y-5=-2/3(x-(-7))

Step-by-step explanation:

I just learned this recently as well so bare with me.

So the point slope form is y-y1=m(x-x1)

So first we have to find the slope. So we do 5-(-1)/-7-1=-6/8=-3/4

So now, we just have to plug in the numbers.

So y-5=-2/3(x-(-7)).

I know that looks a little funky but if you used the slope intercept form, you would get the same answer if you just simplified this version. Of course, you don't have to simplify this version because this version is completely acceptable.

I hope this helped.

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Solve -2= -(x-8), justifying each step with an algebraic property PLZ HELP

vredina [299]

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3 years ago

What is the percent of change if 30 is decreased to 25?

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3 years ago

PLEASE HELP

Kitty [74]

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1 year ago

Find all the values of k so that the given points are 29 square units apart. (-5, 5) and (k,0).

Varvara68 [4.7K]

Distance formula between 2 points (x1,y1) and (x2,y2)

D= $\sqrt{(x1-x2)^{2}+(y1-y2)^{2}}$

D=29 and one point is (-5,5) and the other is (k,0)
sub

29= $\sqrt{(-5-k)^{2}+(5-0)^{2}}$
29= $\sqrt{(-5-k)^{2}+(5)^{2}}$
square both sides
841= $(-5-k)^{2}+(5)^{2}$
841= $(-5-k)^{2}+25$
minus 25 both sides
816= $(-5-k)^{2}$
square root both sides don't forget positive and negative roots
+/-4√51=-5-k
add 5 to both sides
5+/-4√51=-k
times -1 both sides
-5+/-4√51=k

the possible values for k are
k=-5+4√51 or k=-5-4√51

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3 years ago