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2 years ago

Plzzz help me I need it my 6:00

Mathematics

2 answers:

yarga [219]2 years ago

8 0

Answer:

Step-by-step explanation:

Anna35 [415]2 years ago

8 0

Answer:

she would 21

Step-by-step explanation:

add the 5 years younger than the older brother that you would be plus the 3 that your younger sister is. it would make her 8 years younger than him. 29-8=21

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Find the area of these shapes AND explain your method <br> Can some one help me :((

-Dominant- [34]

Answer:

Triangle - 21 units

Trapezoid - 65 units

Step-by-step explanation:

Because this triangle and trapezoid are reflections of each other when split in half, remove the highlighted parts to make them a rectangle. When made into a rectangle, you can use the formula length * width to find the area of either shape (trapezoid or triangle).
Note you won't be able to do this when solving for the area of ALL trapezoids and triangles.

4 0

2 years ago

Read 2 more answers

The circle at the right represents a planet. The radius of the planet is about 6300 km. Find the distance d to the horizon that

faust18 [17]

Answer:

224.54 km

Step-by-step explanation:

A right triangle is formed, where h + r = 4 + 6300 = 6304 km is the hypotenuse, r = 6300 km is one leg and d is the other leg. By Pythagorean theorem:

6304² = 6300² + d²

d² = 6304² - 6300²

d = √50416

d = 224.54 km

3 0

2 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: $\mu \leq 100$

Alternative hypothesis: $\mu > 100$

The statistic for this case is given by:

$t=\frac{\bar X-\mu_o}{\frac{s}{\sqrt{n}}}$ (1)

The statistic calculated for this case $t_{calc}= 1.42$

The degrees of freedom are given by:

$df=n-1=30-1=29$

Now we can find the p value using tha laternative hypothesis and we got:

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

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

5 0

3 years ago

11x+2 divided by 5 in distributive property

jeka57 [31]

Answer:

$\frac{11}{5}x+\frac{2}{5}$

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

Can somebody please help me .

Lyrx [107]

Answer:

Both of theses are irrational.

Step-by-step explanation:

The reason is because when you try to find out how to get the square root of 2 you get a whole bunch of numbers, and the same thing happens when you try to find the square root of 8. in turn both of these numbers are irrational.

5 0

2 years ago