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Arada [10]
2 years ago
9

Identify the solutions to the quadratic equation. Check all that apply. x2 + 4x - 21 = 0

Mathematics
2 answers:
Vika [28.1K]2 years ago
8 0

Answer:

C and D

Step-by-step explanation:

(X-3)(X+7)=0

X-3=0   X+7=0

X=3  X=-7

soldier1979 [14.2K]2 years ago
5 0

Answer:

6, -7 ; C and D

Step-by-step explanation:

(-4 +/- √16+84)/2=x

(-4 +/- 10)/2=x

x=6/2=3, or x=-14/2= -7

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Given the following exponential function, identify whether the change represents
Pavel [41]

Answer:

3%

Step-by-step explanation:

This equation represents exponential decay. Whenever the base is less than 1, the function represents decay. When the base is greater than 1, the function represents growth. In this case, the base is .97 which is less than 1, representing decay.

The formula for exponential decay is y=a(1-r)x.

r is the decay rate, expressed as a decimal.

In this case, r = .03 which represents 3%!

7 0
2 years ago
if eight times a number is increased by 3 the result is 19 more than six times this digit. find the number
Verdich [7]

Answer:

8

Step-by-step explanation:

Even though we don't know the number yet, let's name this number "n".

8n + 3 = 6n + 19

8n + 3 - 6n = 6n + 19 - 6n

2n + 3 = 19

2n = 16

n = 16/2

n = 8

Our number is 8.

Note: This answer is 100% correct.  

6 0
2 years ago
Read 2 more answers
I NEED THIS ASAP!!! What is GC?
umka21 [38]

9514 1404 393

Answer:

  D.  14

Step-by-step explanation:

Point G divides each median into parts that have the ratio ...

  short : long = 1 : 2

Then ...

  GD : GC = 1 : 2 = 7 : 14 . . . . . . . . multiply the ratio by 7

GC = 14

6 0
3 years ago
IvuilipiildliUll dll
Rina8888 [55]

Answer:

13 times

Step-by-step explanation:

You divide 91 and 7 to get your answer as the answer is asking for times.

4 0
3 years ago
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Relative to the acute angle θ, the three sides of a right triangle are the
Rufina [12.5K]
Opposite/adjacent/hypotenuse
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