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Step2247 [10]
2 years ago
8

the city of luckett is pilling rock salt for use during ice storms. if the pile from last year is 29 feet high and 14 feet are a

dded this year, how high is the pile of rock salt?
Mathematics
1 answer:
dem82 [27]2 years ago
6 0

29 + 14 = 43

The pile of rock salt is 43 feet high

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The polynomial 3x ^ 3 - 16x ^ 2 + 31x - 20 the area of a trapezoidal desktop . Of the bases of the x ^ 3 - 5x the height of the
vaieri [72.5K]

Answer:

Step-by-step explanation:

Given:

Area = 3x^3 - 16x^2 + 31x - 20

Base:

x^3 - 5x

Area of trapezoid, S = 1/2 × (A + B) × h

Using long division,

(2 × (3x^3 - 16x^2 + 31x - 20))/x^3 - 5x

= (6x^3 - 32x^2 + 62x - 40))/x^3 - 5x = 6 - (32x^2 - 92x + 40)/x^3 - 5x = 2S/Bh - Ah/Bh

= 2S/Bh - A/B

= (2S/B × 1/h) - A/B

Since, x^3 - 5x = B

Comparing the above,

A = 32x^2 - 92x + 40

2S/B = 6

Therefore, h = 1

6 0
3 years ago
Jenna is buying 5 new shirts at $15 each. Which of the following is NOT a way to write a calculation for how much money
docker41 [41]

Answer:

B, because thats dividing, which equals 3. for the answer A, did you mean 15*5?

Step-by-step explanation:

6 0
3 years ago
In Volleyball , players serve the ball to the opposing team . If the opposing team fails to hit the ball , the services is calle
choli [55]
To solve, I would write an equation like this: 0.3=x/70 , where x is the number of aces divided by 70 games and 0.3 is his ace average.

0.3=x/70
x=70x0.3
  =21

The player has served 21 aces.

Check:
21/70
=0.3


6 0
3 years ago
Is PQRST a scaled copy of ABCDE ? Explain reasoning
loris [4]

Answer: no

Step-by-step explanation:

7 0
3 years ago
If sin Θ = 2 over 3 and tan Θ < 0 , what is the value of cos Θ?
Zielflug [23.3K]

\sin \theta = \dfrac 2 3

\tan \theta < 0

Positive sine, negative tangent, means we have a negative cosine.  We're talking about the second quadrant.

\cos^2 \theta + \sin ^2 \theta = 1

\cos^2 \theta = 1 - \sin ^2\theta

\cos \theta = \pm \sqrt{1 - \sin ^2\theta}

We know it's negative,

\cos \theta = - \sqrt{1 - (2/3)^2} =-\sqrt{5/9} = - \dfrac 1 3 \sqrt{5}

Answer: -(1/3)√5

4 0
3 years ago
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