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ycow [4]
4 years ago
15

Ethan bought 4 packages of pencils. After he gave 8 pencils to his friends, he had 40 pencils

Mathematics
1 answer:
Inessa05 [86]4 years ago
8 0

Answer:

12

Step-by-step explanation:

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In the triangle above, which angle is smallest in measure?
Setler79 [48]
Angle A because the opposite side is the smallest, the smallest side being 28.49.
8 0
3 years ago
Read 2 more answers
Square root of 4×-1=5
borishaifa [10]

Answer:3/2

how i did this

​ Add 11 to both sides.

4x=5+1

Simplify 5+15+1 to 66.

4x=6

Divide both sides by 4

       x=   6/4

Simplify 6/4 to 3/2

       Awnser

x=3/2

Sorry if not helpful just trying my best :)

​​  

5 0
3 years ago
How many​ one-to-one correspondences are there between two sets with 5 elements​ each?
Fittoniya [83]
1st element can be matched with 5
2nd element can be matched with 4
3rd element can be matched with 3
etc.
Total number of correspondences = 5*4*3*2*1 = 120
7 0
3 years ago
Given the following scores on a 30-point quiz, what is the frequency of a score of 27?
kiruha [24]

Answer:

2

Step-by-step explanation:

The frequency is how many times the score shows up in the data set

21,<u> 27</u>, 20, 29, 23, 21, 21, <u>27</u>, 26, 25

27 shows up 2 times so the frequency is 2

7 0
3 years ago
Read 2 more answers
A cleaning company charged $125 to clean a 2500 square foot house. The same company charged $146 to clean a 3200 square foot hou
HACTEHA [7]

Answer:

The cost is y = $185

Step-by-step explanation:

Let us have points spelt out here

(2500,125) and (3200,146)

The general form of a straight line equation is;

y = mx + b

where m is slope

So to calculate the slope in this case, we have

m = (146-125)/(3200-2500)

m = 21/700 = 0.03

So we have the equation as

y = 0.03x + b

To get b, we use any of the two points

Let us use (2500,125)

So we have

125 = 0.03(2500) + b

125 = 75 + b

b = 125-75

b = 50

So the complete equation of the line is;

y = 0.03x + 50

So here, we want to find the cost of a house with 4500 square feet

simply substitute 4,500 for x

y = 0.03(4500) + 50

y = 135 + 50

y = $185

4 0
3 years ago
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