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3 years ago

-3-2e-7=10 need help for my brother

Mathematics

2 answers:

sesenic [268]3 years ago

6 0

Question/Equation:

-3-2e-7=10

Answer/steps:

1. Simplify -3-2e-7 to -10-2e.

−10−2e=10

2. Since -10-2e=10 is false, there is no solution.

No Solution

Done by NeighborhoodDealer

NikAS [45]3 years ago

3 0

Answer:

the answer is - 10

Step-by-step explanation:

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¿Cuál es el resultado de (-2)(-3)*(-1)x 5?

podryga [215]

=-30
-2*-3=6
-1*5=-5
6 x -5=-30

8 0

3 years ago

Does a regular pentagon tessellate and why

mariarad [96]

Answer:

No, a regular pentagon does not tessellate.

In a tessellation, all the angles at a point have to add to 360 degrees, as this means there is no overlap, nor are there gaps. To find the interior angle sum of a pentagon, we use the following formula:

(n-2)*180 (where n is the number of sides)

We plug in the number of sides (5) and get:

Angle sum = (5–2)*180

Angle sum = 3*180

Angle sum = 540

Regular pentagons have equal sides and equal angles, so to find the size of the interior angle of a pentagon, we divide the angle sum by 5 and get 108 degrees for every angle.

As I said before, the angles at a point need to add up to 360, so we need to know if 108 divides evenly into 360. If it does, the shape tessellates, and, if it doesn’t, the shape does not.

360/108 = 3.33333…

This means that a regular pentagon does not tessellate.

Hope this helps!

8 0

3 years ago

Y=12x Do x and y vary directly ?

77julia77 [94]

Answer:

Yes, they vary directly

Step-by-step explanation:

y=kx; k is the constant (12 in this case) and as x increases y increases, so they vary directly

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3 years ago

To test if the mean IQ of employees in an organization is greater than 100, a sample of 30 employees is taken and the value of t

ivolga24 [154]

Answer:

$p_v =P(t_{(29)}>1.42)=0.0831$

For this case the p value calculated is higher than the significance level used of 0.05 so then we have enough evidence to FAIL to reject the null hypothesis and the best conclusion for this case would be:

a) do not reject the null hypothesis and conclude that the mean IQ is not greater than 100

Step-by-step explanation:

Information given

We want to verify if he mean IQ of employees in an organization is greater than 100 , the system of hypothesis would be:

Null hypothesis: $\mu \leq 100$