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2 years ago

Science

2 answers:

7 0

When it's moving, the head of the hammer has kinetic energy.

We can draw this conclusion logically from the cross-sectional dimensions
of the wood (2 x 4) and the size of the nails (16-penny).

juin [17]2 years ago

6 0

C kinetic energy. As it loses potential energy, it gain kinetic energy

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A bag contains the following marbles: 5

Inessa [10]

Answer:

5:20

Step-by-step explanation:

There are 5 black marbles and 20 brown marbles.

You would put black marbles (5) first, because it came before brown (20) in the list.

5 0

2 years ago

Read 2 more answers

Need answer for d with working

son4ous [18]

Answer:

Question D.

Pretty simple if you know what the distributive property is. In this equation, you notice 2 fractions outside the parenthesis. This means you must multiply this fraction by every number within its corresponding parenthesis. So, if you distribute the new equation would be $(\frac{5}{4}y+ 1)=(\frac{2}{3}y-\frac{1}{3})$ . After this isolate the variable y and solve. I'll leave that to you so you can get something out of it, because my entire explanation would be useless if you just looked at the answer and left, not knowing how to do it in the future. :)

4 0

2 years ago

A parabola has an x-intercept of -1, a y-intercept of -3, and a minimum of -4 at x = 1.

torisob [31]

Answer:

The graph in the attached figure

Step-by-step explanation:

we know that

The equation of a vertical parabola in vertex form is equal to

$y=a(x-h)^{2}+k$

where

a is a coefficient

(h,k) is the vertex

In this problem we have

(h,k)=(1,-4)

substitute

$y=a(x-1)^{2}-4$

we have

An x-intercept of (-1,0)

substitute and solve for a

$0=a(-1-1)^{2}-4$

$0=4a-4$

$4a=4$

$a=1$

The equation is

$y=(x-1)^{2}-4$

Verify the y-intercept

For x=0

$y=(0-1)^{2}-4$

$y=-3$

The y-intercept is the point (0,-3) -----> is correct

using a graphing tool

see the attached figure

4 0

3 years ago

12. Which three correlation coefficents have a strong linear correlation.

timofeeve [1]

Answer:It should be D E F since they all are closer to 1

Step-by-step explanation:

6 0

2 years ago

What is an equation for the linear function whose graph contains the points (9, 7) and (4, −8) ?

aalyn [17]

Y=mx+b where m=slope which is change in y divided by change in x m=(-8-7)/(4-9)=-15/-5=3 so we have y=3x+b now we can use either point, I'll use (9,7), to solve for b or the y-intercept... 7=3(9)+b 7=27+b b=-20so our line is: y=3x-20

5 0

2 years ago