All categories

3 years ago

Please help me. I dont wanna disappoint my mom again

Mathematics

1 answer:

Sergeeva-Olga [200]3 years ago

4 0

Answer:

H i think i might be worng sorry

Step-by-step explanation:

You might be interested in

Kara and Kevin are siblings, and have decided to discuss the idea of allowance with their parents since all of their friends get

wolverine [178]

Kara will have more money. By the end of the week, she will have $21, Kevin on the other hand will only have $1.75.

3 0

3 years ago

What is 10 meters increased by 25%

inn [45]

I believe that it's 12.5

8 0

4 years ago

Read 2 more answers

3/4 (4x+8)=-12. Distributive property

Scrat [10]

Answer:

x = -6

Step-by-step explanation:

I'm assuming you're solving for x

3/4 (4x + 8) = -12

you distribute the 3/4 to 4x and 8 so

3/4 times 4x = 3x

3/4 times 8 = 6

now looks like

3x + 6 = -12

3x = -12 - 6

3x = -18

x = -6

7 0

3 years ago

Suppose astronomers built a 50-meter telescope. how much greater would its light-collecting area be than that of the 10-meter ke

drek231 [11]

Answer: Its light-collecting area would be 25 times greater than that of the 10-meter keck telescope.

Step-by-step explanation:

1. To solve this problem you must apply the formula for calculate the area of a circle, which is shown below:

$A=r^{2}\pi$

Where<em> r</em> is the radius of the circle.

2. The diameter of a circle is:

$D=\frac{r}{2}$

Where <em>r</em> is the radius of the circle.

3. Therefore, keeping this on mind, you have that the light-collecting area of a 50-meter keck telescope is:

$A_1=(\frac{50m}{2})^{2}\pi=1963,49m^{2}$

4. And the light-collecting area of a 10-meter keck telescope is:

$A_2=(\frac{10m}{2})^{2}\pi=78.53m^{2}$

5. Divide $A_1$ by $A_2$ , then:

$\frac{1963.49m^{2}}{78.53m^{2}}=25$

6. Therefore, its light-collecting area would be 25 times greater than that of the 10-meter keck telescope.

4 0

4 years ago

PLEASE HELP - HELP IS NEEDED ASAP - FOR EVERY SECOND THIS QUESTION ISN'T ANSWERED, YOU LOSE A DAY IN YOUR LIFE - 15 POINTS.

kvv77 [185]

Answer:

The definition of a z-score is:

z = (X - μ)/σ where X is our given score (33), μ is the distribution's mean (40) and σ is the distribution's standard deviation (9).

To calculate the z-score for 33, plug the numbers in:

z = (33 - 40)/9 = -7/9 = -.78

Hope this helps!

Step-by-step explanation:

5 0

4 years ago