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alina1380 [7]
2 years ago
9

Need some help 20 pts​

Mathematics
1 answer:
Vedmedyk [2.9K]2 years ago
4 0

Answer:

-139, 1

Step-by-step explanation:

Question 14 : 5-144 = -139

Question 15 : -6--7 = -6+7 = 1

Hope I helped!

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Please view this imagine & help meee:(
EleoNora [17]

Answer:

20: 9t+12

21: 18x

22: 105x+9

24: 156r

25: 3x+11

26: 25.2x

28: 56a

29: 1.5n

30: 13q

Step-by-step explanation:

hope this helped

brainliest please

6 0
3 years ago
A set of weights includes a 5 lb barbell and 4 pairs of weight plates. Each pair of
Zina [86]

Answer:

The answer to this question would be B:

Based on the question, since the weight of the weight plates are 20 lbs, this would be represented by the 20x in the function. As well, the 5 lb barbell would be represented by the 5 in the function. The range of the function is determined by the amount of weight plates are added. So if I added one weight plate the equation would equal, f(x) = 20(1) + 5 = 25. This continues on the more and more weight plates you add.

Hope this reached you well :)

Step-by-step explanation:

20 = weight of the weight plates

x = amount of weight plates.

5 = weight of the barbell

f(x) = 20(0) + 5 = 5

f(x) = 20(1) + 5 = 25

f(x) = 20(2) + 5 = 45

f(x) = 20(3) + 5 = 65

f(x) = 20(4) + 5 = 85

5 0
3 years ago
Find the volume of a cone with a diameter of 7 inches and a height that is 4 times the radius. Use 3.14 for pi, and round your a
Tatiana [17]

Answer:

179.50 in^{3}

Step-by-step explanation:

The equation for volume of a cone is:

V=\pi *r^{2} *\frac{h}{3}

The radius is half of the diameter so r= 3.5 in

The height is 4 times the radius so h=14

V=3.14*3.5^{2} * \frac{14}{3}

V= 179.50 in^{3}

7 0
3 years ago
Read 2 more answers
This function can be used to determine the number of bacteria in a culture h hours after the culture was started.
dimulka [17.4K]

Answer:

The statement means that after 2 hours, there are 90 bacteria in the culture.

Step-by-step explanation:

The number of bacteria after x hours is given by the function states in the exercise. We have that f(x) will be the number of bacteria after x hours.

Which statement best describes the meaning of the equation f(2) = 90 ?

The statement means that after 2 hours, there are 90 bacteria in the culture.

3 0
3 years ago
A rectangular prism has a height of 4 1/2 cubic inches. If the length of the prism is 8 1/2 inches and the width is 3 inches, wh
lubasha [3.4K]

V=Bh

B=area of base

h = height

answer =114.75 inches cubed

8 0
3 years ago
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