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marishachu [46]
3 years ago
12

To solve the equation x + 7 =15 you would need to......

Mathematics
1 answer:
zysi [14]3 years ago
4 0
Subtraction property of equality. Subtract both sides by 7, giving you the answer of 8.
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$22.95 shirt. 6% tax
lina2011 [118]

Answer:

6%=0.06

y=22.95(0.06)

y=1.377

y=1.377+22.95

$24.327 = $24.33 is the total for the shirt after tax.

Step-by-step explanation:

4 0
2 years ago
A sample of 25 undergraduates reported the following dollar amounts of entertainment expenses last year:
Kaylis [27]

Answer:

A.

mean = 724.2

Median = 715

Mode = 768

B.

Range = 85

Standard deviation = 29.30

C.

Interval = [665.6, 782.8]

Step-by-step explanation:

Number of samples n = 25

Summation X= 769 + 691 + 699 +730+711+ 765+ 702 718 +719 +712+ 768 +688 +757+695 768 +735 +709 +758 +708+ 693 +736 700+ 687 +772 +715 = 18105

A.

1. Mean = 18105/25

= 724.2

2. Median is the middle value when arranged from the least value to the highest = 715

3. Mode is the number with the highest frequency = 768 (occured two times)

B.

1. Range = highest value - lowest value

Highest value = 772

Lowest value = 687

772-687 = 85

2. Standard deviation = √(X-barX)²/n-1

= √20604/25-1

=√858.5

= 29.30

Please check attachment for the full calculation of the standard deviation

C.

Interval

[Mean - 2(sd), mean + 2(sd)]

= [724.2-2x29.3, 724.2+2x29.3]

=[665.6, 782.8]

4 0
2 years ago
What does 2*-2-(3- -2) equal
Dovator [93]

Answer:

The value of the expression 2*-2-(3- -2) is -9.

Step-by-step explanation:

2 x (-2)- (3- -2)

=2 x (-2)- (3+2)

=2 x (-2) -5

= -4-5

=<u><em>-9</em></u>

Hope this Helps!!!

Please consider this as brainliest, thanks!!!

8 0
3 years ago
Read 2 more answers
At the middle school, 900 students ride the bus, and 300 students do not ride the bus. What percent of the students do not ride
dolphi86 [110]

Answer:

33.33 percent are not riding the bus

Step-by-step explanation:

8 0
2 years ago
Can somebody help me please.
Fiesta28 [93]
I’m pretty sure it is 57?
7 0
2 years ago
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