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Blababa [14]
3 years ago
8

Four runners are training for long races. Noah ran 7.315 miles, Andre ran 6.29 miles, Jada ran

Mathematics
1 answer:
Kazeer [188]3 years ago
6 0
Answer- ask the teacher
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Which are solutions of x2=-11+4?
Dovator [93]

For this case we have a quadratic equation of the form:

ax ^ 2 + bx + c = 0\\x ^ 2 + 11x-4 = 0

Where:

a = 1\\b = 11\\c = -4

We find the roots:

x = \frac {-b \pm \sqrt {b ^ 2-4 (a) (c)}} {2 (a)}\\x = \frac {-11 \pm \sqrt {11 ^ 2-4 (1) (- 4)}} {2 (1)}\\x = \frac {-11 \pm \sqrt {121 + 16}} {2}\\x = \frac {-11 \pm \sqrt {137}} {2}

The roots are:

x_ {1} = \frac {-11+ \sqrt {137}} {2}\\x_ {2} = \frac {-11- \sqrt {137}} {2}

Answer:

x_ {1} = \frac {-11+ \sqrt {137}} {2}\\x_ {2} = \frac {-11- \sqrt {137}} {2}

3 0
3 years ago
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Please help me I am its in the pic
tiny-mole [99]

Answers:

1. gh = -21

2. g^2 - h = 46

3. g + h^2 = 2

4. g + h = -4

5. h - g = 10

6. g - h = -10

Step-by-step explanation:

1. -7 x 3 = -21

2. -7^2 = - 49

-49 + 3 = -46

3. 3^2 = 9

-7 + 9 = 2

4. -7 + 3 = -4

5. 3 - -7 = 3 + 7 = 10

6. -7 - 3 = -10

6 0
3 years ago
Ose has 50 coins in a jar. 20% are nickels, 40% are quarters, and the rest are pennies. (6.RP.3c-Benchmark #3)
cupoosta [38]

Answer:

Part A: 40% are pennies

Part B: NIckels 10, Quarters 20, Pennis 20

5 0
3 years ago
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Help please!!!!!!!!!!!!
S_A_V [24]

Step-by-step explanation:

(2(x+y)÷(x+y)(x-y) )×(x+y÷(x^2+2×x×2y+2y^2)

2÷x^2+2y^2

4 0
3 years ago
HELP ME PLEASEEEEEEEEEE
arsen [322]

Answer:

(5,-4)

Step-by-step explanation:

Move the point T three units to the right. It's (x, y), so (5,-4) is the answer.

4 0
3 years ago
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