All categories

3 years ago

SOMEONE PLEASE HELP!!!!

Mathematics

2 answers:

pochemuha3 years ago

6 0

Answer:

C. 8.5

Step-by-step explanation:

aniked [119]3 years ago

5 0

Answer:

D. 9

Step-by-step explanation:

When you add 1 + 4 + 5 + 5 + 5 + 6 + 9 + 10 + 10 + 11 + 12 + 12 + 15 + 15 + 15 = 135. Which is all of the numbers given to you, and since mean is when you add all of the numbers together, and than divide it by the amount of numbers there, you will take that 135 and divide it by 15. 135 / 15 = 9. Which gets you to finally getting an answer of 9. so D. 9 is correct.

You might be interested in

What is the multiplacation problem for sandy walk 26 miles in a month. If she were consistent in her walking for 2 years, how ma

Svetllana [295]

Answer:

624 miles

Step-by-step explanation:

We know that there are 12 months in a year, and you need to find out the total miles she walks in two years, which is 24 months.

So we multiply 26(24)

This is equal to 624 miles

6 0

3 years ago

Read 2 more answers

PLEASE HELP I AM SO CONFUSED

soldi70 [24.7K]

Answer:

Option D, 1

Step-by-step explanation:

Step 1: Determine what x1, x2, y1, y2 are

Slope = $\frac{y2 - y1}{x2-x1}$

(x1, y1) is (2, 8)

(x2, y2) is (6, 12)

Step 2: Plug into the formula to get the slope

Slope = $\frac{y2 - y1}{x2-x1}$

Slope = $\frac{12 - 8}{6 - 2}$

Slope = $\frac{4}{4}$

Slope = 1

Answer: Option D, 1

5 0

3 years ago

Read 2 more answers

Lin solved the equation 8(x-3)+7=2x(4-17) incorrectly. Find the errors in her solution. What should her answer have been?

Irina-Kira [14]

Answer: The correr solution is $x=\frac{17}{34}$

Step-by-step explanation:

Since the steps in Lin's solution are not shown, we are not able to find her erros. However, we can solve it step by step and find the correct result:

$8(x-3)+7=2x(4-17)$

Firstly, in the left part of the equation we have to multiply $8$ by the numbers inside the parenthesis; and in the right side we have to solve first what is inside the parenthesis:

$8x-24+7=2x(-13)$

Adding similar terms in the left side and multiplying $2x$ by the number inside the parenthesis in the right side:

$8x-17=-26 x$

Isolating $x$ :

$x=\frac{17}{34}$ This is the correct solution

4 0

3 years ago

A projectile is launched into the air. The function h(t) = –16t2 + 32t + 128 gives the height, h, in feet, of the projectile t s

Zinaida [17]

Answer:

t = 4 seconds

Step-by-step explanation:

The height of the projectile after it is launched is given by the function :

$h(t)=-16t^2+32t+128$

t is time in seconds

We need to find after how many seconds will the projectile land back on the ground. When it land, h(t)=0

So,

$-16t^2+32t+128=0$

The above is a quadratic equation. It can be solved by the formula as follows :

$t=\dfrac{-b\pm \sqrt{b^2-4ac} }{2a}$

Here, a = -16, b = 32 and c = 128

$t=\dfrac{-32\pm \sqrt{(32)^2-4\times (-16)(128)} }{2\times (-16)}\\\\t=\dfrac{-32+ \sqrt{(32)^2-4\times (-16)(128)} }{2\times (-16)}, \dfrac{-32\- \sqrt{(32)^2-4\times (-16)(128)} }{2\times (-16)}\\\\t=-2\ s\ \text{and}\ 4\ s$

Neglecting negative value, the projectile will land after 4 seconds.

4 0

3 years ago

Please help and thank you! (x4)

postnew [5]

in rectangular form the equation is $x^{2} +y^{2} =3 * x$

8 0

2 years ago