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andrey2020 [161]
3 years ago
12

I really need answers asap please.

Mathematics
1 answer:
ale4655 [162]3 years ago
6 0

We're told x=-5 and y=11 and asked to evaluate a few expressions. That just means substitute these values into the expressions and compute the exact numerical answer.

4y-10x = 4(11) - 10(-5) = 44 + 50 = 94

Answer: 94

x to the power of 3

x^3 = (-5)^3 = -5 \times -5 \times -5 = -125

Answer: -125

•6y to the power of 2

Probably means

6y^2 = 6(11)^2 = 6(121) = 726

Answer: 726

5(3x+2y) = 5(3(-5) + 2(11)) = 5(-15 + 22) = 5(7) = 35

Answer: 35

•(y-x) to the power of 2

(y - x)^2 = (11 - -5)^2 = 16^2 = 256

Answer: 256


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Troyanec [42]

Answer:

8

Step-by-step explanation:

18-12

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Answer all three please​
sweet-ann [11.9K]

6. Answer:

72.84

Step-by-step explanation:

To find the perimeter of the rectangle, just add the sides together except the one connected to the semicircle

12 + 15 + 15 = 42

The diameter of the semi circle is 12

πr + d = 6 * π + 12 ≈ 30.84

Add them together

42 + 30.85 = 72.84

7. Answer:

78.54

(78.5)

Step-by-step explanation:

The shape is a circle

Radius is 5

Diameter is 10  (diameter is always double of the radius)

π * r^2 = π * 25 cm^2 = 78.54 cm^2

8. Answer:

50.27

Step-by-step explanation:

The shape is a circle

Radius is 4

Diameter is 8  (diameter is always double of the radius)

π * r^2 = π * 16 ft^2 = 50.27 ft^2

(16 = 8 * 2)

7 0
3 years ago
What is the area of a circle with a diameter of 6 in? (A)12π in (B)36π in2 (C)9π in2 (D)36 in2
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Answer:

Choice C correct answer.

Step-by-step explanation:

From the question statement, we observe that

d=6 in

r=d/2

so, r=6/2=3 in

The formula to find area is

A = πr²

Putting the value of radius, we get

A = π(3)²

A= 9π in²


7 0
3 years ago
Sally says, "If it's sunny, I will go to the park. When I go to the park, I go down the slide."
nikitadnepr [17]

Answer:

I can conclude that Sally went down the slide. I used deductive reasoning to get my answer. Sally said that if it was sunny, she would go to the park. She also said that if she does go to the park, she will go down the slide. Since Sally did go to the park, I know that she did go down the slide. Based on the information I have, I can use deductive reasoning to get to my answer.

Step-by-step explanation:

5 0
3 years ago
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