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svet-max [94.6K]
3 years ago
9

What is the center and radius of the circle?

Mathematics
2 answers:
Setler79 [48]3 years ago
5 0
I believe the answer should be B. Because of the standard circle equation.
aliya0001 [1]3 years ago
5 0

Answer:B: Center (-4,5)

Radius:11

Step-by-step explanation:Happy to help:)

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Determine whether the graph of the quadratic function y = –3x2 + 2x + 5 opens upward or downward. Explain.
givi [52]

Answer:

The graph of the function opens downwards.

Step-by-step explanation:

The graph opens upward if the coefficient of x^2 is higher than 0.

But, the coefficient of x^2 (-3) is less than 0.

So the graph of the function opens downwards.

4 0
3 years ago
DESPERATE! Please answer any of the questions :(( And explain bc im super confused
Whitepunk [10]

Answer:

Step-by-step explanation:

4. when bases are equal ,powers are also equal.

x+4=3x-1

3x-x=4+1

2x=5

x=5/2=2.5

5 0
3 years ago
Statistics 4. Hol (a) The average age of 5 students is 9 years. Out of them, the ages of 4 students are 5, 7, 8, and 15 years. W
olga nikolaevna [1]

Answer:

10 years

Step-by-step explanation:

the average or mean value is the sum of all data points divided by the number of data points.

x = the unknown age of the 5th student.

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45 = 5 + 7 + 8 + 15 + x = 35 + x

x = 45 - 35 = 10

the 5th student is 10 years old.

6 0
2 years ago
Need help ASAP please
Kay [80]

Answer:

because the length is 4 feet more than the width

=> the length is x + 4 (feet)

because the base has an area of 21 square feet

=> x(x + 4) = 21

<=> x² + 4x = 21

3 0
3 years ago
4 times a number is subtracted from 7 to give 15​
Umnica [9.8K]
I believe it’s 7-4x=15 and x= -2
4 0
3 years ago
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