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Yanka [14]
3 years ago
14

Your school day begins at 8:50 a.m. and ends at 3:10 p.m. How long are you in school?

Mathematics
1 answer:
yan [13]3 years ago
7 0

Answer:

6 hours and 20 minutes

Step-by-step explanation:

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When solved for x, what is the sum when the roots of the quadratic equation are added?
Anna35 [415]

Answer:

A

Step-by-step explanation:

x² + 10x + 24 = 0

Here, a = 1, b = 10, c = 24.  Factoring using the AC method:

ac = 1×24 = 24

Factors of 24 that add up to 10 are +4 and +6.

Therefore:

(x + 4) (x + 6) = 0

x + 4 = 0, x + 6 = 0

x = -4, x = -6

The roots are -4 and -6.  Added together:

-4 + -6 = -10

Answer A.

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3 years ago
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After 1 hour they are only 32 miles apart. Then after 12 minutes they meet
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Choose one of the factors of x15 − 64. (2 points)
Lorico [155]

We have been given the function x^{15}-64

Convert this expression in difference of cubes form.

x^{15}-64\\=(x^5)^3-4^3

Now, in order to find the factors, we can apply the difference of cubes form, which is given by

x^3-y^3=(x-y)(x^2+xy-y^2)

On applying this formula, we get

(x^5-4)(x^{10}+4x^5+16)

Hence, the factors of the given expression are

(x^5-4) \text{ and }(x^{10}+4x^5+16)

Out of the given option, A is the correct option.

x^5 − 4 is the required factor.

6 0
3 years ago
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Help please Algebra 2 B
NNADVOKAT [17]

- 2(3) + 5 \\  - 6 + 5 =  - 1 \\  \\  - 2(4) + 5 \\  - 8 + 5 =  - 3 \\  \\  - 2(5) + 5 \\  - 10 + 5 =  - 5 \\  \\  - 2(6) + 5 \\  - 12 + 5 =  - 7 \\  \\  - 1 + ( - 3) + ( - 5) + ( - 7) \\  =  - 16
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4 years ago
Write an expression that can be used to multiply 6 × 198 mentally.
Mamont248 [21]

Answer:

assuming you meant 6x198 do a mental sum for 6x200 (1200) then subtract 6x2(12)to give you 1188

Step-by-step explanation:

brainly.com/question/274291

5 0
2 years ago
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