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Leona [35]
4 years ago
15

How to solve -6r(4r-5)-2(r-2) plz...

Mathematics
1 answer:
wlad13 [49]4 years ago
6 0

-6r(4r - 5) - 2(r - 2)

(-6r).4r - 5.(-6r) - 2.r - 2.(-2)

-24r² + 30r - 2r + 4

-24r² + 28r + 4

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44 points. find the surface area of the pyramid to the nearest whole number.
Furkat [3]

It would be 348

as A= lw+l((w /2)^2+h^2)^0.5+w((l /2)^2+h^2)^0.5

where l=12, w=12, h=6

A=347.65 ~ 348

6 0
3 years ago
Read 2 more answers
A rock is dropped from the top of a building and hits the ground at a velocity of
soldier1979 [14.2K]

The height of the building comes to be 81 feet.

Initial velocity u= 0 feet/sec

Final velocity v= 72 feet/sec

The acceleration due to gravity g =32ft /sec²

Height of the building h= suppose h

<h3>What is the equation of motion?</h3>

The equation of a motion is:

v^{2} =u^{2} +2gh

Where u and v are the initial and final velocities.

72^{2} =0+2*32*h\\144 = 64h\\h=81

So, the height of the building = 81 feet.

Therefore, the height of the building comes to be 81 feet.

To get more about motion visit:

brainly.com/question/453639

8 0
3 years ago
Read 2 more answers
58. 122. 61. None of the choices are correct
In-s [12.5K]

Answer:

C. 61

Step-by-step explanation:

Two sides are equal, so the triangle is an isosceles triangle.

Both base angles are equal.

Angles in a triangle add up to 180 degrees.

58 + x + x = 180

58 + 2x = 180

2x  = 122

x = 61

8 0
3 years ago
Hey truck can be rented from company a for $110 A day plus $.20 per mile. Company B charges $70 a day plus $.40 per mile to rent
choli [55]
At 200 miles, both company K and company B will pay $150.
7 0
3 years ago
Which function grows the fastest for large values of x? f(x)=8x f(x)=3x f(x)=4x2+3 f(x)=1.5x 20 points
Aleonysh [2.5K]
The 4 functions are:
f_1 (x) = 8x
f_2(x)=3x
f_3(x)=4x^2+3
f_4(x)=1.5 x

Let's keep in mind that for large values of x, a quadratic function grows faster than a linear function:
ax^2 \ \textgreater \  kx for large values of x

In this problem, we can see that the only quadratic function is f_3(x), while all the others are linear functions, so the function that grows faster for large values of x is
f_3(x) = 4x^2 +3
7 0
3 years ago
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