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3 years ago

Can some one ☝️ plz help me

Mathematics

1 answer:

Nady [450]3 years ago

5 0

Just add 7 to all x-coordinates and subtract 9 from all y-coordinates.

S' = -3 + 7 = 4 and 6 - 9 = -3 therefore S'(4, -3)

T' = 0 + 7 = 7 and 7 - 9 = -2 therefore T'(7, -2)

U' = 1 + 7 = 8 and 4 - 9 = -5 therefore U'(8, -5)

V' = -5 + 7 = 2 and 2 - 9 = -7 therefore V'(2, -7)

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A craft project requires 3 pints of paint for every two students. About how many liters of paint are needed for 60 students? (2.

nadezda [96]

Answer:

Step-by-step explanation:

3/2=x/60

multiply 3/2 by 30 for the denominator to get to 60

90/60

90 liters of paint for 60 students

6 0

3 years ago

Read 2 more answers

Please help me put these in order

Bezzdna [24]

100

0.1

Are you have to do is look at the number very closely

7 0

2 years ago

Select the correct answer

Tcecarenko [31]

Answer:

C. 150

Step-by-step explanation:

It's right on Plato.

4 0

2 years ago

Please help!! I’m not sure how to answer this question!!

nlexa [21]

<h3>Answer: 9V</h3>

=============================================================

Reason:

The volume expression of a cone with radius r and height h is

$\frac{1}{3}\pi*r^2*h$

Let's plug in the given height h = 12 and we'd get

$\frac{1}{3}\pi*r^2*h\\\\\frac{1}{3}\pi*r^2*12\\\\\left(\frac{1}{3}*12\right)\pi*r^2\\\\4\pi*r^2\\\\$

This is the volume of the first cone. We're told the first cone has a volume of V, so we can say $V = 4\pi r^2$

We can't find the actual numeric volume because we don't know what value replaces r. So we leave it as is.

The second cone has the same height (h = 12) but the radius is now 3 times in size. Instead of r, we use 3r

Replace every copy of r with 3r. Then simplify

$4\pi*r^2\\\\4\pi*(3r)^2\\\\4\pi*9r^2\\\\9(4\pi r^2)\\\\9V\\\\$

The radius tripled which results in a volume that's 9 times bigger.

3 0

1 year ago

Total mass vs. numbers of cd and numbers of cd

Gekata [30.6K]

Answer: Choice A) M = 0.25n + 100

=============================================================

Explanation:

For now, I'll treat n as x, and M as y.

In other words,

x = number of CDs
y = total mass in kg

Let's select two points from this graph. I'll pick (200,150) and (400,200)

The slope of the line through those points is

m = (y2-y1)/(x2-x1)

m = (200-150)/(400-200)

m = 50/200

m = 0.25

Now we'll use the point (x,y) = (200,150) along with that slope value to find the y intercept b

y = mx+b

150 = 0.25*200+b

150 = 50+b

150-50 = b

100 = b

b = 100

You could also use (x,y) = (400,200) and you should get the same b value.

In fact, any other point from this graph works as well.

------------------------------

Since m = 0.25 and b = 100, we go from y = mx+b to y = 0.25x+100

This then translates over to M = 0.25n + 100 which is choice A

To help verify this, let's say we plugged in n = 100

M = 0.25*n + 100

M = 0.25*100 + 100

M = 25 + 100

M = 125

Which is confirmed by what the graph shows. I'll let you check the other points as well.

7 0

3 years ago