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Olegator [25]
3 years ago
8

Let f(x)=−42x+3. Evaluate f(−1)

Mathematics
1 answer:
Salsk061 [2.6K]3 years ago
3 0

Step-by-step explanation:

f(-1)=-42(-1)+3....placing -1 in x

f(-1)=42+3

f(-1)=45

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Mike wants to fence in part of his backyard. He wants the length of the fenced-in area to be at least 20 feet long, l ≥ 20. He h
zhuklara [117]

I added a screenshot of the complete question along with the given choices.

<em><u>Answers:</u></em>

w = 10 ft and l = 50 ft ................> second option

w = 20 ft and l = 60 ft ...............> third option

w = 50 ft and l = 40 ft ...............> fifth option

<em><u>Explanation:</u></em>

<u>We are given that:</u>

length should be at least 20 ...........> length ≥ 20

equation for perimeter is : 2l + 2w ≤ 200

<u>We will check each option as follows:</u>

<u>Option 1:</u>

w = 50 ft and l = 10 ft

This option is incorrect as the proposed length is less than 20.

<u>Option 2:</u>

w = 10 ft and l = 50 ft

Since the length is greater than 20, the first condition is satisfied.

Now, we check the second condition:

2l + 2w = 2(50) + 2(10) = 100 + 20 = 120 ≤ 200

The second condition is also satisfied.

This option is correct

<u>Option 3:</u>

w = 20 ft and l = 60 ft

Since the length is greater than 20, the first condition is satisfied.

Now, we check the second condition:

2l + 2w = 2(60) + 2(20) = 120 + 40 = 160 ≤ 200

The second condition is also satisfied.

This option is correct

<u>Option 4:</u>

w = 90 ft and l = 30 ft

Since the length is greater than 20, the first condition is satisfied.

Now, we check the second condition:

2l + 2w = 2(30) + 2(90) = 60 + 180 = 240 > 200

The second condition is not satisfied.

This option is incorrect

<u>Option 5:</u>

w = 50 ft and l = 40 ft

Since the length is greater than 20, the first condition is satisfied.

Now, we check the second condition:

2l + 2w = 2(50) + 2(40) = 100 + 80 = 180 ≤ 200

The second condition is also satisfied.

This option is correct

Hope this helps :)

8 0
3 years ago
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I don’t not know the exact answer
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2 years ago
Liam is single. He has no children and an adjusted income of $26,700. Last year, his employer held $172 from each monthly payche
Alborosie

Answer:

option B is the correct answer

Step-by-step explanation:

please make me as a brainlist answer

6 0
3 years ago
A project manager has determined that of the work for a project was completed in 9 days. How many more days will it take to fini
AysviL [449]
The Correct Answer Is 6
3 0
3 years ago
How would you convert 93/20 to a decimal?
anastassius [24]
In order for you to find the decimal for this problem you would have to divide both of  the numbers from each other.

So for this problem you have to 

Problem → \frac{93}{20}

Write them out  → 93 ÷ 20 

Answer → 4.65

So, that means that your answer is 4.65


4 0
3 years ago
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