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TEA [102]
3 years ago
15

What is the value of expression?

Mathematics
1 answer:
kolezko [41]3 years ago
4 0
6^{-7}\cdot6^4=6^{-7+4}=6^{-3}
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On a certain​ exam, Tony corrected 20 papers and found the mean for his group to be 70. Alice corrected the remaining 10 papers
son4ous [18]

Answer:

The mean of the combined group is 76.67 ≈ 77

Step-by-step explanation:

  1. The sum of the grades in Tom's group is 20×70 = 1400
  2. The sum of grades in Alice's group is 10×90=900
  3. The sum of gradees in the combined group is =1400+900=2300
  4. Then the mean grade of the combined group is \frac{2300}{30}=76.67

where

  • 2300 is the sum of the all grades in the combined group
  • 30 is the total number of people in the group
4 0
3 years ago
Is 4.5 natural number?​
vfiekz [6]

Answer:

No

Step-by-step explanation:

4.5 IS NOT A WHOLE NUMBER!

4 0
3 years ago
Read 2 more answers
I need helpppp:( like im failing this class
Olin [163]

Answer:

dont even stress i gotchu

It's 50*, 46* and 84*.

Ratio of the second problem is 1:1 they both have a slope of 1 (which is probably why all three points are on the same line)

Step-by-step explanation:

Since we know that the straight/flat angle would equal 180* we will set the total of all those angles to 180*

We will add them up to find x. Once we find x we can find the value of each angle.

6x-10 + 4x + 6 + 7x  + 14 = 180

We will combine like terms and solve for x.

17x+10 = 180

17x = 170

x = 10.

Since we have x = 10, we will plug it into x of each angle to get the value of each angle.

6(10) -10 = 60-10 which equals 50*

4(10) + 6 = 40+6 which equals 46*

7(10) + 14 = 70 + 14 which equals 84*.

8 0
3 years ago
PLEASE HELP ME RN<br> NO LINKS !!!
salantis [7]

Answer:

blank #1 is $588.00

blank #2 is approximately 870 bananas

4 0
2 years ago
180 is 10 % more than witch number ?
Andrei [34K]
It is 10 percent more then 198.
6 0
3 years ago
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