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FinnZ [79.3K]
2 years ago
5

Cam someone help with these 2 plsssss

Mathematics
1 answer:
dlinn [17]2 years ago
6 0

Answer:

2- 96, 3- 203.5

Step-by-step explanation:

2- 9 x 8 + (10 x 8)/2 = 96

.

3- 12 x 18 - (5 x 5) / 2 = 203.5

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How do you simplify without using a calculator (-5)(7)+4×5​
Evgesh-ka [11]

Answer:

-15 Is the answer

Step-by-step explanation:

(-5)(7)+4×5​

= -15

(-5)(7) + 4×5 = -15/1 = -15

Multiple: -5 * 7 = -35

Multiple: 4 * 5 = 20

Add: the result of step No. 1 + the result of step No. 2 = -35 + 20 = -15

Hope this helps.

7 0
2 years ago
Answers please and explain
Andrei [34K]

To get the answer you have to fill in the 14 for r because that is the radius. Then multiply 14 by it self to get 196 then multiply that by pie to get your answer of 615.75216.

So the answer is 615.75216

4 0
3 years ago
If 2x - 5y – 7 = 0 is perpendicular to the line ax - y - 3 = 0 what is the value of a ?
faltersainse [42]

Answer:

D) a = - 5/2

Step-by-step explanation:

2x -5y - 7 = 0

5y = 2x - 7

y = 2/5 x - 7

the slope of this line is therefore 2/5 (factor of x).

the perpendicular slope is then (exchange y and x and flip the sign) -5/2, which is then a and the factor of x.

6 0
2 years ago
Help me and i'll help you earn more points if the question is right
lubasha [3.4K]
-21x^3 - 8x^3 = -29x^3
-7/4x^(1/2) - 0 = -7/4x^(1/2)
-6x^(1/4)
-12x^(-1/2)
12x^(-1/4)
14x^4

Therefore, the correct option is the 2nd one.
6 0
2 years ago
Find the point on a circle that has a radius of 8 with an angle of rotation of 130 degrees centered at (-3,5)?
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