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Shtirlitz [24]
2 years ago
6

A home cleaning service takes more time to clean larger spaces. The table shows the number of minutes it takes for the service t

o clean a certain number of square feet within a home. Square Feet and Cleaning Time Number of Square Feet, x 50 80 100 150 Time in Minutes, y 20 32 40 60 Based on the table, how many minutes would it take for the service to clean 200 square feet? 20 minutes 80 minutes 125 minutes 400 minutes
Mathematics
1 answer:
VLD [36.1K]2 years ago
4 0

The time required to clean 200 square feet will be 80 minutes. Option B is correct.

<h3>What is the surface area?</h3>

The total land area of all the faces of a three-dimensional object is its surface area. When we wish to wrap something in real life, we employ the notion of surface areas of distinct things.

Let x be the cleaning time for the 200 square feet area;

From the table, it is observed that for a 1 sq. foot area the time needed to clean will be 0.4 minutes.

1 square feet = 0.4 minute

200 square feet = 200 × 0.4

200 square feet  = 80 minute

The time required to clean 200 square feet will be 80 minutes.

Hence, option B is correct.

The table is attached in the attachment.

To learn more about the surface area, refer to the link;

brainly.com/question/2835293

#SPJ1

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Need help again. Please explain your answer.
Elis [28]

4y + 3 ≤ y + 6

4y + 3 - 3 ≤ y + 6 - 3

4y ≤ y + 3

4y - y ≤ y - y + 3

3y ≤ 3

3y/3 ≤ 3/3

y ≤ 1

So any value of y less than or equal to 1 (so 1 is included in the solution set) satisfies the inequality. C is the correct answer.

5 0
3 years ago
Who drove the fastest? Circle the correct answer. A) 363 miles in 6 hours B) 435 miles in 7 hours C) 500 miles in 8 hours D) 215
scoundrel [369]
Answer=C

TO find out who was the fastest, we'll have to divide the speed by the time and see which value is greatest.

a) 363mi 6hr 363/3=60.5mi/hr
b) 435mi 7hr 435/7=62.14mi/hr
c) 500mi 8hr 500/8=62.5mi/hr
d) 215mi 5hr 215/5=43mi/hr

C has the greatest value, so the person who drove the fastest was C
5 0
3 years ago
Read 2 more answers
A state license plate consists of three letters followed by three digits. If repetition is allowed, how many different license p
Nuetrik [128]

A state license plate consists of three letters followed by three digits. If repetition is allowed, the number of different ways in which license plates are possible is 17,576,000.

<h3>What is a permutation?</h3>

An arrangement of items in a specific order is referred to as a permutation. When the order of the arrangements counts, it is a mathematical technique that establishes the total number of alternative arrangements in a collection.

Calculation for the permutation -

Three letters are followed by three digits on a state license plate.

26 letters from a to z and 10 numbers from 0 to 9 make up the alphabet.

The potential of arrangements is due to the license plate's composition of three letters and three numerals.

Total ways = 26×26×26×10×10×10

                  = 17,576,000

Therefore, the number of different ways in which license plates are possible is 17,576,000.

To know more about the permutation, here

brainly.com/question/1216161

#SPJ4

7 0
2 years ago
Determine the value of k for which -3x^2+12x+k=0 has no real roots. ​
Crazy boy [7]

Answer:

K<-12

Step-by-step explanation:

+ For that, we need the delta negatif.

+ The delta= b^2-4ac=12^2-4(-3)(k)=144+12k<0

Then, 12k<-144 (divise both sides by 12)

we have k<-12

Or an other way:

-3x^2+12x+k=0  (divise both sides by -3)

x^2-4x-k/3=0

x^2-4x+4 -4-k/3=0

(x-2)^2=4+k/3

Now , we need 4+k/3<0, k/3<-4 or k<-12

Hope you understand.

4 0
3 years ago
Please help me answer these!!! Thanks :)
Andrei [34K]
-2-(+7) is the same thing at -2-7 which is -9

-3 \frac{2}{7} -(- \frac{5}{7} ) is the same thing as (-3 \frac{2}{7}) + (\frac{5}{7}) which is - \frac{18}{7} or -2 \frac{4}{7}

Last but not least the last one is the Associative Property based on definition listed below :)
Associative Property:<span> When three or more numbers are added, the sum is the same regardless of the grouping of the addends. For example (2 + 3) + 4 = 2 + (3 + 4)</span>
6 0
4 years ago
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