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Bingel [31]
2 years ago
14

I need help with #8 & #9

Mathematics
1 answer:
sertanlavr [38]2 years ago
7 0
For 8) the answer is 125 because V=a^3=5^3=125
for 9) V=384m i think but I'm not sure about it. I usually skip extra credit, I don't recommend it though. You should aim for above and beyond and not average.
You might be interested in
1 (-2,2) Write the equation, in point-slope form, of the line that is perpendicular to the given line and passes through the poi
lozanna [386]

Answer:

y = -5x - 8

Step-by-step explanation:

Take the points (-5,-4) and (0,-3) plug them into this formula to get the slope.

\frac{y2 - y1 }{x2 - x1}

Now plug in your points

\frac{-3 - (-4)}{0 - (-5)} \\\\\frac{1}{5}

Since you're slope is 1/5 the slope of the perpendicular line is going to be the totally opposite -5 is the slope of the perpendicular line.

Now plug in -5 and the point (-2,2) into y = mx + b to get the y-intercept

2 = -5(-2) + b (b represents the y-intercept)

2 = 10 + b (subtract 10 from both sides)

-8 = b

The perpendicular line looks like this y = -5x - 8

Hope this helps ya! Keep smiling!

7 0
3 years ago
4x^4+35x^2-9=0 solve by factoring
Elden [556K]
O si it told me that the solution was -1/2,x2 and it equals =1/2 hope it helps
6 0
2 years ago
Ryan is 4 1/2 ft. tall. He is 3 in. taller than his sister Lizzie. She is 3/4 of a foot taller than her sister Emma. How tall is
77julia77 [94]

Answer:

3\frac{1}{12} ft tall

Step-by-step explanation:

We must follow the indications:

Ryan is 4 1/2 ft. tall.

Ryan = 4\frac{1}{12} ft

He is 3 in. taller than his sister Lizzie. to find how tall is Lizzie we need to substract 3 inches from the height of Ryan, but we can only substract the quantities if they are in the same units.

Thus we convert the 3 inches to feet, since we 1 feet = 12 inches:

\frac{1}{4} feet=3inches

so the height of lizzie:

4\frac{1}{12}ft-\frac{1}{4}ft\\  \\

we convert the first mixed number to fraction by multiplying 4 by 12 and adding the numerator 1:

4\frac{1}{12}=\frac{4*12+1}{12}=\frac{49}{12}

the subtraction becomes:

\frac{49}{12}ft-\frac{1}{4}ft\\  \\=\frac{49*4-12*1}{12*4}\\ \\=\frac{196-12}{48}\\\\=\frac{184}{48}\\ \\=\frac{46}{12} \\

=\frac{23}{6}

Lizzie is 23/6 ft tall.

She is 3/4 of a foot taller than her sister Emma, thus we must substract 3/4 from the height of Lizzie to find the height of Emma:

\frac{23}{6}ft-\frac{3}{4}ft\\  \\=\frac{23*4-6*3}{6*4}\\ \\=\frac{92-18}{24}\\ \\=\frac{74}{24}\\ \\=\frac{37}{12}\\ \\=3\frac{1}{12}

Emma is 3\frac{1}{12} ft tall.

4 0
2 years ago
the temperature was 75 at noon the temperature increased by 7 by evening to decreased by 7 how did the temperature change ​
Natali [406]

Answer: 0

Step-by-step explanation:

Given: The temperature was 75 ( units) at noon the temperature increased by 7 by evening to decreased by 7.

I.e. Change in temperature = Increase in temperature - decrease in temperature

=7-7 = 0

Hence, the net temperature change is 0. (Original temperature of 75 (units) remains at the end )

3 0
3 years ago
FAST - what are the domain and range of the function f(x)= -log(5-x)+9?
likoan [24]

Answer:

Domain x<5

Range all real numbers


Step-by-step explanation:

log (5-x)

(5-x) > 0

subtract 5

-x> -5

x<5


5 0
3 years ago
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