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Mkey [24]
2 years ago
8

The zeros of a quadratic function are –7 and 3. Which of the following could be the function? Select all that apply:

Mathematics
2 answers:
stellarik [79]2 years ago
7 0

Answer:

First option: f(x)=x^2+4x-21

AND

Fourth option: f(x)=5x^2+20x-105

Step-by-step explanation:

All you have to do is do the quadratic equation backwards

If the zeros are x=-7 and x=3, the equation would look like ->

(x+7)(x-3)

Now distribute it

x(x-3)+7(x-3)

x^2-3x+7x-21

x^2+4x-21

The Fourth option is also correct. Just divide the whole equation by 5 and you will get the same exact equation as the first option.  

VMariaS [17]2 years ago
5 0

Step-by-step explanation:

f(x) = (x+7)(x-3)

= x²+4x-21 ... (option A)

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you have 5 red crayons, 3 yellow crayons, 4 blue crayons and purple crayons. what multiplication would you do to find the probab
almond37 [142]

Answer:

3/46

Step-by-step explanation:

7 0
3 years ago
Based on the graph below, what is f(-1)? <br><br><br> 4 <br> 0 <br> 1 <br> -4
djyliett [7]
The answer is f(-1)=
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8 0
2 years ago
find the square root of each of the following decimal numbers correct to two places of decimal : I. 175.01 II. 423.74 III. 5893.
netineya [11]

Answer:

i. 13.23

ii. 20.58

iii. 76.77

iv. 84.48

Step-by-step explanation:

Here , we are to calculate the square root of we have of the decimal numbers and correct to two decimal places.

i. √(175.01) = 13.229 = 13.23

ii. √(423.74) = 20.5849 = 20.58

iii. √(5893.27) = 76.767 = 76.77

iv. √(7136.8) = 84.4795 = 84.48

Kindly note that the approximation to two decimal places are the figures after the equal to

3 0
2 years ago
What is the slope of the line that passes through the following points (7,10) and (10,9)
Svet_ta [14]

Answer:

-1/3

Step-by-step explanation:

To find the slope, we can use the slope formula

m = ( y2-y1)/(x2-x1)

    = ( 9-10)/(10-7)

    = -1/3

8 0
3 years ago
Read 2 more answers
Plzzz help me im having alot of trouble understanding this question does some one understand if you do plz help fast!!!
juin [17]

Answer:

1/2 - 3(1/2 + 1)²

simplify the expression (1/2 + 1)

1/2 - 3•(3/2)²

using PEMDAS, we see we have to evaluate the exponent first

(3/2)² = 9/4

rewrite the equation

1/2 - 3 • (9/4)

multiply 3 by (9/4)

1/2 - (27/4)

subtract

-25/4

(1 + 1/3)² - 2/9

simplify the expression (1 + 1/3)

(4/3)² - 2/9

using PEMDAS, we see we have to evaluate the exponent first

(4/3)² = 16/9

rewrite the equation

(16/9) - (2/9)

subtract

14/9

5 0
3 years ago
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