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DanielleElmas [232]
2 years ago
15

Rachel received a $90 gift card for a coffee store. She used it in buying some coffee that cost $7.74 per pound. After buying th

e coffee, she had $66.78 left on her card. How many pounds of coffee did she buy?
Mathematics
1 answer:
Ivenika [448]2 years ago
7 0

Answer:

3 pounds

Step-by-step explanation:

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Please help!!!!!!!!!!!!!!!!!
Bas_tet [7]

Answer:

hi

Step-by-step explanation:

7 0
3 years ago
Given the slope of the line containing the points (7 , b) and (-2 , 5) is 4/9, find the value of b​
MAVERICK [17]

Answer: b=9

Step-by-step explanation: To find the slope we use: y2-y1/x2-x1

Which would then be: 5-b/-2-7= 5-b/-9

Then we have to find a number for b that would give us -4 as the numerator. That number would be 9

This would give us 4/9 which is the slope we already had.

6 0
3 years ago
-3x+6=21 -3x+6<21 which statement best describes the process used to slove the equations
sukhopar [10]

Answer:

-3x-3x=21-6

9x=15

x=15/9

5 0
2 years ago
To determine whether they need to hire extra help for the holiday season, the managers of a railroad company want to estimate ho
nadezda [96]

Answer:

36

Step-by-step explanation:

Data provided in the question:

Standard error = 1.5 minutes             ( ∵ number are repetitive 1.51.5 )  

Standard deviation = 9 minutes        ( ∵ number are repetitive 99 )

Now,

Standard error = ( Standard deviation ) ÷ √n

Here,

n is the sample size

Therefore,

on substituting the respective values, we get

1.5 = 9 ÷ √n

or

√n = 9 ÷ 1.5

or

√n = 6

or

n = 6² = 36

3 0
3 years ago
Need help before 7:30
Tomtit [17]

yes. because no matter the shape it will remain the same

7 0
2 years ago
Read 2 more answers
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