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inn [45]
3 years ago
15

I need help with these three problems

Mathematics
1 answer:
sergiy2304 [10]3 years ago
8 0
41. The vendor sells both types of apples, meaning that he can sell his 30 lbs of apples in two ways. Therefore, we add the two sizes of apple bunches, and that leaves us with 5f + 2.5t = 30, and thus the answer is B.

42. There's an easy way to solve this. In a quadratic function of the form ax² + bx + c, the 2 (real) roots must always multiply to c, and add to b. The roots of our function are -1 and 6. -1 * 6 = -6, and -1 + 6 = 5. So, we are looking for something that is x² + 5x - 6, which would be A.

43. Since you took the boxes "out" of the bookcase, you would subtract 18. This leaves us with choice A and C. Because the bookcase can hold "no more than" t books, t must less than or equal to 8b. So, we are looking for something that is equivalent to t ≤ 8b - 18, which is A.
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A cube of ice has a surface area of 24 square inches. What is the volume of the ice?
Tomtit [17]

Answer:

8 inches cubed

Step-by-step explanation:

Since it is a cube, the length of one side is 2.

To get a volume you have to multiply 2 * 2 * 2.

8 0
4 years ago
PLZ HELP 100 POINTS AND DONT BE MEAN
cricket20 [7]

Answer:

Full drum 80 dollars

one lid missing

earn 10 dollars less

Step-by-step explanation:

We need to find the surface area

SA = 2 pi r^2  + 2 pi rh

The diameter is 2 so the radius = 2/2 =1

SA = 2 * pi * 1^2  + 2 * pi * 1 * 3

      = 2 pi + 6pi

      = 8pi

Using pi = 3.14

SA = 8 *3.14 = 25.12 ft^2

We get 3.18 per ft^2

25.12 * 3.18 =79.88

To the nearest dollar

80 dollars

If one of the lids is missing

SA =  pi r^2  + 2 pi rh

        pi + 6pi

        7 pi

Using pi = 3.14

SA = 7 *3.14 = 21.98 ft^2

We get 3.18 per ft^2

21.98 * 3.18 =69.90

To the nearest dollar

70

The difference is 10 dollars

6 0
3 years ago
Read 2 more answers
Given: AG and CI are common internal tangents of H and B. HG = 7, ED = 7, and ED = EF.
RideAnS [48]
EC = 24

This is because CBE is a right triangle with a right angle at angle ECB. Then we know that BC =7 and EB = 25. Use the Pythagorean Theorem to find EC.
3 0
4 years ago
Read 2 more answers
Calculate the value of 0. Write your equation.
Crazy boy [7]

Answer:

θ = 67.4°

Step-by-step explanation:

using the <u>SOHCAHTOA </u>method,

Here opposite is 12 cm, hypotenuse is 13 cm, adjacent is 5 cm.

Using the formula:

sin(\beta ) =  \frac{oppsoite }{hypotenuse}

sin(\beta ) =  \frac{12}{13}

\beta  = sin^{-1}(\frac{12}{13}  )

β = 67.4°

3 0
2 years ago
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Find the absolute value.<br><br> |-4|
KATRIN_1 [288]

Answer:

The answer is 4

Step-by-step explanation:

6 0
3 years ago
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