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Rasek [7]
3 years ago
10

Which expression is equal to (7 × 2) × 2?

Mathematics
2 answers:
Debora [2.8K]3 years ago
5 0
The answer is C. 7 x ( 2 x 2 )
Sever21 [200]3 years ago
4 0

Answer:

C

Step-by-step explanation:

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In 2000 pizza costs 7.50 and in 2015 it costs 9.00 what is the percentage of change in the cost of the pizza
padilas [110]
Percentage change = difference/original x 100

(9.00-7.50)/7.50 x 100 = 2.50/7.50 x 100
= 1/3 x 100
= 33.3% increase
5 0
3 years ago
A mountain climber camped at an elevation of 18,492 feet. The following day the climber descended 2,516 feet to another campsite
Mandarinka [93]
He was camping at an elevation of 18,492
the following day, he descended (he came down) 2,516 ft....
so ur expression would be : 18,492 - 2,516 <==

and ur answer would be : The elevation of the 2nd campsite is :
15,976 ft <==
6 0
3 years ago
Together, teammates Pedro and Ricky got 2672 base hits last season. Pedro had 280 more hits than Ricky. How many hits did each p
Lera25 [3.4K]
Pedro = 280 + x
ricky = x

280 + x + x = 2672
2x = 2392
x = 1196

pedro = 1476, ricky = 1196

hope this help
8 0
4 years ago
What is the smallest number which when decreased by 8 is divisible by 21, 27, 33, and 55?.
evablogger [386]

The required number which when decreased by 8 is divisible by 21, 27, 33, and 55 is 10403.

We need to find the smallest number which when decreased by 8 is divisible by 21, 27, 33, and 55.

<h3>What is LCM?</h3>

The least common multiple is also known as LCM (or) the lowest common multiple in math. The least common multiple of two or more numbers is the smallest number among all common multiples of the given numbers.

We find the LCM of 21, 27, 33, and 55.

3 | 21   27   33   55

3 | 7     9     11    55

3 | 7     3     11    55

7 | 7     1     11    55

5 | 1     1     11    55

11 | 1     1     11    11

 | 1     1     1     1

When decreased by 8, we have to add 8 in the LCM of the numbers.

That is 10395+8=10403

Therefore, the required number when decreased by 8 is divisible by 21, 27, 33, and 55 is 10403.

To learn more about the LCM of numbers visit:

brainly.com/question/10942748.

#SPJ4

8 0
2 years ago
A professor wants to know whether or not there is a difference in
SashulF [63]

Answer:

There is evidence since we have to apply a two-tailed test

p-value = 0.0212

Step-by-step explanation:

Given data:

α=0.05.

population std = 5.32

A) To test if there is difference in the comprehension of the lab based on test scores at α = 0.05.  = 5%

we will apply a two-tailed test  ( Null and alternate hypothesis test )

H0 : u1 = u2

Ha : u1 ≠ u2

there is evidence since we have to apply a two-tailed test

B ) Determine the P-value for the test

attached below  a detailed solution ( solved using excel )

Z- test : two sample for means

p-value = 0.0212

4 0
3 years ago
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