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Anna35 [415]
3 years ago
10

What number should be added to both sides of the equation to complete the square? x2 – 10x = 7

Mathematics
1 answer:
Tpy6a [65]3 years ago
3 0

Answer:

25

Step-by-step explanation:

x^2 – 10x = 7

Take the coefficient of x

-10

Divide by 2

-10/2 = 5

Square it

5^2 = 25

Add this to both sides

x^2 – 10x+25 = 7+25

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Answer if you know
elena-s [515]

Answer:

x=22

Step-by-step explanation:

<HMQ- 4x-20

<RMF-x

<HMQ+<RMF=90

4x-20+x=90

5x=110

x=22

<HMQ=68

<HMS=22

<SMP=90

<HMP=112

Hope that helps!

4 0
3 years ago
Find the range of each function for the domain {-4, -2, 0, 1.5, 4}. f(x) = 5x^2 + 4
andrew11 [14]
Substitute x with the members of the domain.
f(x) = 5x² + 4

Substitute with the domain of -4
f(x) = 5x² + 4
f(-4) = 5(-4)² + 4
f(-4) = 5(16) + 4
f(-4) = 80 + 4
f(-4) = 84

Substitute with the domain of -2
f(x) = 5x² + 4
f(-2) = 5(-2)² + 4
f(-2) = 5(4) + 4
f(-2) = 20 + 4
f(-2) = 24

Substitute with the domain of 0
f(x) = 5x² + 4
f(0) = 5(0)² + 4
f(0) = 5(0) + 4
f(0) = 0 + 4
f(0) = 4

Substitute with the domain of 1.5
f(x) = 5x² + 4
f(1.5) = 5(1.5)² + 4
f(1.5) = 5(2.25) + 4
f(1.5) = 11.25 + 4
f(1.5) = 15.25

Substitute with the domain of 4
f(x) = 5x² + 4
f(4) = 5(4)² + 4
f(4) = 5(16) + 4
f(4) = 80 + 4
f(4) = 84

The range of the function for those domain is {4, 24, 15.25, 84}
4 0
3 years ago
THIS IS 6TH GRADE please help me! thanks​
Stella [2.4K]

Answer:

D.

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
WILL MARK U BRAINLIEST IF RIGHT PLS EXPLAIN
Artyom0805 [142]

Answer:

166

Step-by-step explanation:

If the four lines are tangent to the circle, know that:

NA = KA

AD = LD

LC = MC

MB = NB

The question stated that:

NA = 18 --> KA is also 18

BN = 11 --> MB is also 11

AD = 34 --> LD is also 34

BC = 31 --> MC is 20 (Because BC is BM + MC and BM is 11)

We can just add these numbers.

(18+18) + (11 + 11) + (20+20) + (34+34)

= 36 + 22 + 40 + 68

= 76 + 90

= 166

The perimeter of ABCD is 166.

8 0
2 years ago
Read 2 more answers
You and your friends are cycling around Australia.
DaniilM [7]

Part 1. Your friend is not right because 1\5 is equal to 20%, which is not equal to 25%.

Part 2. The service fee is $18.60 because 10% of 186 is 18.6

7 0
3 years ago
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