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3 years ago

14.

Mathematics

2 answers:

shutvik [7]3 years ago

8 0

Answer:

A. 80.50

Step-by-step explanation:

Illusion [34]3 years ago

4 0

Answer:

Step-by-step explanation:

87.75-7.25=80.50

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What is 5x to the second power +15

noname [10]

It depends what x is

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3 years ago

Max has a cab service that charges customers according to the equation

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3 years ago

What is the maximum number of relative extrema contained in the graph of this function?

Aleks04 [339]

Answer: The maximum number of relative (local) extrema is 3.

Explanation: the polynomial is of 4th degree. Its derivative is a polynomial of a 3rd degree, which may have up to 3 roots (tied to extrema of the original polynomial). If all 3 roots are real each with multiplicity of 1, then the original polynomial will show 3 relative extrema.

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3 years ago

Read 2 more answers

A girl's feet are negative 4 over 6 yards from the surface of a pool. A boy's feet are negative 1 over 6 yards from the surface

notka56 [123]

The correct answer is B.

See diagram

EXPLANATION

Let us choose zero to be our reference point. That is zero is representing the surface of the pool.

Since

$-\frac{1}{6}>-\frac{4}{6}$

Or

$-\frac{4}{6}$

$-\frac{1}{6}$

will be closer to zero.

We were told that

$-\frac{1}{6}$

is where the boy's feet are. Therefore his feet are closer to the surface of the pool than the girl's feet.

So the correct answer is

the second option

7 0

3 years ago

Two lines L1 and L2 pass through the point of intersection of 2y=x-13 and 3y+x+12=0. L1 passes through P(-4,-7) and L2 is perpen

alexgriva [62]

Answer:

84°

Step-by-step explanation:

1. <u>point of intersection of 2y=x-13 and 3y+x+12=0</u>

x = 2y + 13 ==> 3y + (2y+13) + 12 = 0 ==> 5y + 25 = 0 ==> y = -5

x = 2*(-5) +13 = 3

point of intersection: (3 , -5) L1: pass (3 , -5) and (-4 , -7)

slope of L1 = (-7 - -5)/(-4-3) = -2 / -7 = 2/7

L2 pass (3 , -5) perpendicular to 2x-5y=4

2x-5y=4 ==> y = 2/5 x - 4 slope = 2/5

so slope of L2 = -5/2

angle Θ between two slopes: tan Θ = | (m2-m1) / (1 + m1*m2)|

==> = | (-5/2 - 2/7) / (1 + -5/2*2/7) | = |(-39/14) / (4/14) | = |- 39/4| = 39/4 = 9.75

Θ = 84°

6 0

3 years ago