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dimulka [17.4K]
2 years ago
12

|-9| + |12| = ?

Mathematics
2 answers:
antoniya [11.8K]2 years ago
6 0

Answer:

21

Step-by-step explanation:

-9=9

9+12=21

Georgia [21]2 years ago
5 0

Answer:

9+12= <u>21</u>

21 is the answer.

<em>Option D.</em>

<em />

~ hope this is right~

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Write an equation for a quadratic function that has x intercepts (-3, 0) and (5, 0)
Blizzard [7]

Answer:

One possible equation is f(x) = (x + 3)\, (x - 5), which is equivalent to f(x) = x^{2} - 2\, x - 15.

Step-by-step explanation:

The factor theorem states that if x = x_{0}  (where x_{0} is a constant) is a root of a function, (x - x_{0}) would be a factor of that function.

The question states that (-3,\, 0) and (5,\, 0) are x-intercepts of this function. In other words, x = -3 and x = 5 would both set the value of this quadratic function to 0. Thus, x = -3\! and x = 5\! would be two roots of this function.

By the factor theorem, (x - (-3)) and (x - 5) would be two factors of this function.

Because the function in this question is quadratic, (x - (-3)) and (x - 5) would be the only two factors of this function. In other words, for some constant a (a \ne 0):

f(x) = a\, (x - (-3))\, (x - 5).

Simplify to obtain:

f(x) = a\, (x + 3)\, (x - 5).

Expand this expression to obtain:

f(x) = a\, (x^{2} - 2\, x - 15).

(Quadratic functions are polynomials of degree two. If this function has any factor other than (x - (-3)) and (x - 5), expanding the expression would give a polynomial of degree at least three- not quadratic.)

Every non-zero value of a corresponds to a distinct quadratic function with x-intercepts (-3,\, 0) and (5,\, 0). For example, with a = 1:

f(x) = (x + 3)\, (x - 5), or equivalently,

f(x) = x^{2} - 2\, x - 15.

6 0
2 years ago
While shopping Marcy spent $59. If the amount she spent is 25% of her savings, how much savings did she have before she shopped
aliya0001 [1]

Answer:

Savings= $236

Step-by-step explanation:

Giving the following information:

Money spent= $59

Proportion of savings= 25% = 0.25

<u>To calculate the total savings before shopping, we need to use the following formula:</u>

Savings= money spent / proportion of savings

Savings= 59 / 0.25

Savings= $236

7 0
3 years ago
The table below shows the movie preferences of high school and college students:
Finger [1]
<span>C. She calculated the conditional relative frequency for comedy films that are liked by college students. The correct answer is 28%. hope this helps please mark me as brainliest

</span>
8 0
3 years ago
Read 2 more answers
Based on the diagram below, BC = 12 and m
Mama L [17]

Answer:


Step-by-step explanation:

tan (40) = x/12

x = 12*tan(40)

6 0
4 years ago
The repairs bill on your car includes $355 for parts $146 for labor and a sales tax of $40 what is the total amount you owed
marissa [1.9K]

Answer:

$541

Step-by-step explanation:

Given:

The repair bill includes $355 for parts $146 for labor and a sales tax of $40

Question asked :

what is the total amount we owed = ?

Solution:

Total cost of parts to repair = $355

Total cost of labor = $146

Sales tax =$40

By adding all the cost:

Total cost of repair = $355 + $146 + $40

                                = $541

Therefore, total amount we have to pay = $541

7 0
3 years ago
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