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Vitek1552 [10]
3 years ago
11

Write a numerical expression and simplify. the difference between 33 and negative 12

Mathematics
1 answer:
Vsevolod [243]3 years ago
6 0
Difference = -
33 - (-12) = 33 + 12 = 45
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Triangles A B C and F D E are shown. Angle A C B is 83.5 degrees. Angle D E F is 62.7 degrees. The lengths of sides B C and D E
DedPeter [7]

Answer:

AB= FD

Step-by-step explanation:

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7 0
3 years ago
The Quality Control Department employs five technicians during the day shift Listed below is the number of times each technician
frutty [35]

Solution :

Number of different samples of two technicians possible is = 10, as 2 technicians are to be chosen from a total of 5 technicians.

a). Therefore, 10 different samples are possible of size two.

b).

<u>         Sample                    Shut down         Mean</u>

1. Taylor, Hurley                 4, 3                    3.5

2. Taylor, Gupta                 4, 5                    4.5

3. Taylor, Rousche             4,6                      5

4. Taylor, Huang                4, 3                    3.5

5. Hurley, Gupta                 3,5                       4

6. Hurley, Rousche             3,6                      4.5

7. Hurley, Huang                 3,3                       3

8. Gupta, Rousche              5,6                       5.5

9. Gupta, Huang                  5,3                       4

10. Rousche, Huang            6,3                   <u>    4.5   </u>

                                                                        42

Now mean of sample means  $=\frac{42}{10}$    = 4.2

Mean of population is = $\frac{4+3+5+6+3}{5}$    = 4.2

Thus both the means are equal.

8 0
3 years ago
Find the measure of &lt;2.
iVinArrow [24]
Should be 30 as well
5 0
3 years ago
Read 2 more answers
John and Ariana bought school supplies, John spent $10.65 on 4 notebooks and 5 pens. Ariana spent $7.50 on 3 notebooks and 3 pen
timurjin [86]

Cost of 1 notebook is $ 1.85 and cost of 1 pen is $ 0.65

<h3><u>Solution:</u></h3>

Let "a" be the cost of 1 notebook

Let "b" be the cost of 1 pen

Given that John spent $10.65 on 4 notebooks and 5 pens

cost of 1 notebook x 4 + cost of 1 pen x 5 = 10.65

4a + 5b = 10.65 ------ eqn 1

Given that Ariana spent $7.50 on 3 notebooks and 3 pens

3a + 3b = 7.50 ----- eqn 2

Let us solve eqn 1 and eqn 2 to get the values of "a" and "b"

Multiply eqn 1 with 3

12a + 15b = 31.95  ---- eqn 3

Multiply eqn 2 with 4

12a + 12b = 30 ------ eqn 4

Subtract eqn 4 from eqn 3

12a + 15b = 31.95

12a + 12b = 30

(-) ---------------------

3b = 1.95

b = 0.65

Substitute b = 0.65 in eqn 1

4a + 5(0.65) = 10.65

4a = 7.4

a = 1.85

Thus cost of 1 notebook is $ 1.85 and cost of 1 pen is $ 0.65

8 0
3 years ago
For the straight line y =1/2x-4 what are the slope and y intercept
NikAS [45]
Slope Is 1/2 & Y-intercept Is -4
8 0
3 years ago
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