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4 years ago

Can someone help. Please

Mathematics

1 answer:

KonstantinChe [14]4 years ago

5 0

Answer:

Answer below Please give brainliest!!

Step-by-step explanation:

Sue Black: 8x5=40 hours 40 x $6.75 = $270

Jerry Atrix: 7.25 + 3 + 6.75 + 8 + 5 = 30 hours

30 x $5.15 = $154.50

Sam Ting: 7.75 x 5 = 38.75 hours

38.75 x $8.75 = 339.0625 = $339.06

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Grace [21]

Answer:

D: The graph shows a line of best fit because the points are plotted evenly above and below the line.

Step-by-step explanation:

5 0

3 years ago

The probability that an event will happen is P(E) =30/37. Find the probability that an event will not happen

MrRa [10]

The probability that an event will NOT happen would be 7/37. It is whatever is left of the remaining total of 37. 37-30= 7.

4 0

3 years ago

Write down an (in)equality which describes the solid ball of radius 2 centered at (-2, 5, 2). It should have a form like ????2 ?

MissTica

$\text{We know that the euation of the sphere with radius r and centered at (h,k,l)}\\
\text{is given by:}\\
\\
(x-h)^2+(y-k)^2+(z-l)^2=r^2\\
\\
\text{here we have given a solid ball of radius 2 centered at }(-2, 5,2), \text{ so the }\\
\text{region of the ball will be all the area within the ball.}\\
\text{Hence the inequality that will describe the ball is give given by}$

$(x-(-2))^2+(y-5)^2+(z-2)^2\leq 2^2\\
\\
\Rightarrow (x+2)^2+(y-5)^2+(z-2)^2\leq 4\\
\\
\text{hence the required inequality that describes the ball is:}\\
\\
(x+2)^2+(y-5)^2+(z-2)^2-4\leq 0$

6 0

4 years ago

What is the gradient of a line<br> perpendicular to a line with a gradient<br> of 5

ZanzabumX [31]

Answer:

-1/5

Step-by-step explanation:

When a line is perpendicular to another line, it's gradient will be a reciprocal.

To calculate the reciprocal of a number you have to flip the fraction the other way around.

So, in the case our current gradient is 5/1 (5/1 is the same as just 5) and we need to flip in over to get 1/5, which is our new gradient.

The final step is to make the number negative because the line is going down. This gives us the final answer of -1/5.

3 0

3 years ago

Brainliest to the answer. please help !

11111nata11111 [884]

The answer is C because when you rotate 90 degrees clockwise (x,y) becomes (y,-x)

6 0

3 years ago