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3 years ago

Pls I need help.. this is due in a few mins...

Mathematics

1 answer:

Fofino [41]3 years ago

4 0

Answer:

463u

Step-by-step explanation:

to find surface area you multiply things like a*b a*c b*c, but you only need two in this case,you dont need 4.3*14, so it just 4.3*5 and 5*14, multiply those and add em

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What is the answer to the equation -84+15r=3r

Novay_Z [31]

Answer:

r=7

Step-by-step explanation:

-84+15r=3r

Subtract 15r from each side

-84+15r-15r=3r-15r

-84 = -12r

Divide each side by -12

-84/-12 = -12r/-12

7 = r

3 0

3 years ago

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An office building is on fire, so the firefighters must use a ladder to get inside the burning building before too much damage i

insens350 [35]

I had th esame qustion but icant fin dthe answer

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3 years ago

Which characteristic is correct for the function f(x) = −2x^3 + 3x^2 ?

galina1969 [7]

Answer:

Step-by-step explanation:

The function is cubic (the highest power is 3), so it can't be even. It's either odd or neither.

We can either graph the function, or we can test that it's symmetrical about the origin by seeing if f(x) = -f(-x).

f(x) = -2x³ + 3x²

f(-x) = -2(-x)³ + 3(-x)²

f(-x) = 2x³ + 3x²

f(x) ≠ -f(-x), so the function is neither even nor odd.

3 0

3 years ago

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Write the point-slope form of the line that passes through (5,5) and is perpendicular to a line with a slope of 1/4 include all

amid [387]

<u>Answer:</u>

The point-slope form of the line that passes through (5,5) and is perpendicular to a line with a slope of $\frac{1}{4}$ is 4x + y -25 = 0

<u>Solution:</u>

The point slope form of the line that passes through the points $\left(x_{1} y_{1}\right)$ and perpendicular to the line with a slope of “m” is given as

$\bold{y-y_{1}=-\frac{1}{m}\left(x-x_{1}\right)}$ ---- eqn 1

Where “m” is the slope of the line. $x_{1} \text { and } y_{1}$ are the points that passes through the line.

From question, given that slope “m” = $\frac{1}{4}$

Given that the line passes through the points (5,5).Hence we get

$x_{1}=5 ; y_{1}=5$

By substituting the values in eqn 1 , we get the point slope form of the line which is perpendicular to the line having slope $\frac{1}{4}$ can be found out.

y - 5 = -4(x - 5)

y - 5 = -4x + 20

on simplifying the above equation, we get

y - 5 + 4x -20 = 0

4x + y - 25 = 0

hence the point slope form of given line is 4x + y - 25 = 0

3 0

3 years ago

600 units of electricity and 100 units of gas were used for a total cost of $388. Next month, 400 units of electricity and 150 u

lana66690 [7]

Answer:

Cost per Electricity Unit= $0.61

Cost per Gas Unit= $0.22

Step-by-step explanation:

Suppose,

Cost per Electricity Unit: e

Cost per Gas Unit: g

for the first month condition, equation would be

$600*e+100*g=388...........................................(i)$

and for the next month condition, equation would be like

$400*e+150*g=277...........................................(ii)$

By solving both linear equations simultaneously, we get

e=0.61 and g=0.22

7 0

4 years ago