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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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A forest ranger spots a fire from a 115 meter tall tower. The angle of depression from the forest ranger to the fire is 28o. Wha
nikklg [1K]

Answer:

61.15 m

Step-by-step explanation:

From trigonometry :

Tan x = opposite / Adjacent

x = 28°

Tan 28 = distance from base to fire / height

0.5317094 = distance from base to fire / 115

distance from base to fire = 115 * 0.5317094

distance from base to fire = 61.15 m

4 0
2 years ago
Graph y = x2 + 10x + 25.<br> Determine the number of solutions.
vesna_86 [32]

Answer:

1 solution

Step-by-step explanation:

The equation will be a horizontal parabola that has an x-intercept of (-5,0) therefore 1 solution

7 0
3 years ago
Read 2 more answers
1. Isaiah and Ron work together on their
makkiz [27]

Answer:

Step-by-step explanation:

They are equivalent.  Use the distributive property.

3(x+3)

the 3 on the outside of the parenthesis is multiplied by the variable(the letter) and thenthe constant(number) inside the parenthesis.

makes and equivalent equation 3x+9

5 0
3 years ago
The municipal swimming pool in Nicetown has three different ways of paying for individual open swimming. Todd is trying to decid
balandron [24]
Sllope intercept form is y=mx+b
m is the slope , b is the y itnercept

so early pay
cost=70 flat rate
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y=mx+15
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1.
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6 0
3 years ago
Houa bought 11 chicken wings for $23.10. How much does each wing cost?
MAXImum [283]

If Houa bought 11 chicken wings for $23.10.The cost of each wing will be $2.310.

<h3>What is an arithmetic operation?</h3>

It is defined as the operation in which we do the addition of numbers, subtraction, multiplication, and division. It has basic four operators that are +, -, ×, and ÷.

It is given that, Houa bought 11 chicken wings for $23.10.

We'll apply division by Splitting into equal halves or groups, the division may be used to decide how to distribute a dish of cookies evenly among a group. Doing division is simple it is a type of operation in which we will distribute the items.

Suppose the cost of each wing is x.

x = $23.10 / 10

x =  $2.310

Thus, if Houa bought 11 chicken wings for $23.10.The cost of each wing will be $2.310.

Learn more about the arithmetic operation here:

brainly.com/question/20595275

#SPJ1

4 0
1 year ago
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