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3 years ago

rewrite f(x)=x^2+8x-20 in the form that would most easily help you identify the zeros of the function

Mathematics

2 answers:

Snowcat [4.5K]3 years ago

8 0

Answer:

f(x) = (x-2) (x+10)

Step-by-step explanation:

f(x)=x^2+8x-20

Factor the right hand side

What 2 numbers multiply to -20 and add to 8

-2 * 10 = -20

-2 + 10 = 8

f(x) = (x-2) (x+10)

Then we can use the zero product property to help us to find the zero's

kap26 [50]3 years ago

6 0

Answer:

B.f(x)=(x+6)(x-2)

Step-by-step explanation:

apexs

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harkovskaia [24]

Answer:

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Step-by-step explanation:

First determine the square root of 17.8

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subtract 1.93 from 4.22

4.22 - 1.93 = 2.29

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3 years ago

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For the answer to the question above asking how many more book does the other grade need to read to have the same rate?
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3 years ago

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zalisa [80]

Answer:

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Step-by-step explanation:

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3 years ago

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3 years ago

A teacher is making a history test composed of the same number of multiple-choice questions as short-answer questions. She estim

STALIN [3.7K]

Answer:

The inequality is $5.5n \leq 45$

Step-by-step explanation:

Total time:

The total time to complete the test is the sum of the number of multiple-choice questions multiplied by the time it takes to solve each and the number of short-answer questions multiply by the time it takes to solve each.

In this question:

Same number(n) of both.

Multiple-choice takes 2 minutes, short-answer takes 3.5 minutes. The total time is given by:

$T = 2n + 3.5n = 5.5n$

Write an inequality to determine how many questions, n, the teacher can include if the test must take students less than 45 minutes to complete.?

This means that:

$T \leq 45$

$5.5n \leq 45$

The inequality is $5.5n \leq 45$

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3 years ago