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3 years ago

3. Cora is raising money for a local homeless shelter. She manages to have

Mathematics

2 answers:

emmainna [20.7K]3 years ago

8 0

(D) because dividing 624 by 4 gives you the answer.

NeX [460]3 years ago

4 0

Answer:

Step-by-step explanation:

okay you are going to divide 624 by 4 witch is 156

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Write the equation of the circle centered at (0,1) with radius 15.

NNADVOKAT [17]

Answer:

$x^2+(y-1)^2=225$

Step-by-step explanation:

we know that

The equation of the circle in center radius form is equal to

$(x-h)^2+(y-k)^2=r^2$

where

(h,k) is the center of the circle

r is the radius of the circle

In this problem we have

$(h,k)=(0,1)\\r=15\ units$

substitute

$(x-0)^2+(y-1)^2=15^2$

$x^2+(y-1)^2=225$

6 0

3 years ago

how many gallons of a 70% antifreeze solution must be mixed with 90gallons of 15% antifreeze to get a mixture that is 60% antifr

Alisiya [41]

Here is your answer

Add 315 gallons of 70% antifreeze to 90 gallons of 25% antifreeze to make a 60% mixture.

5 0

3 years ago

Consider the line y=-4/7x+4.

Wittaler [7]

Answer:

1). y = -4/7x 2). y = 7/4x - 65/4

Step-by-step explanation:

1). When a line is parallel, the slope remains the same.

y = -4/7x + b

-4 = -4/7(7) + b

-4 = -4 + b

0 = b

The equation is simply y = -4/7x.

2). When a line is perpendicular, the slope becomes the exact opposite.

y = 7/4x + b

-4 = 7/4(7) + b

-4 = 49/4 + b

-65/4 = b

The equation is y = 7/4x - 65/4.

7 0

2 years ago

Find the slope of the line between those two points

PtichkaEL [24]

Answer:

m=4

Step-by-step explanation:

Using the slope formula: y2 - y1 / x2 - x1

m = 4 - (-4) / 5 - 3

m = 8 / 2

m = 4

8 0

3 years ago

HURRY!!!!!!!!!<br><br> Given P(5,10,8) and Q(7,11,10), find the midpoint of the segment PQ.

rusak2 [61]

Answer:

$P_{m}=(6,10.5,9)$

Step-by-step explanation:

The mid point can be found with the formula

$P_{m}=(\frac{x_{1}+x_{2} }{2},\frac{y_{1} +y_{2} }{2} ,\frac{z_{1}+z_{2} }{2} )$

The given coordinates are $P(5,10,8)$ and $Q(7,11,10)$ .

Replacing coordinates in the formula, we have

$P_{m}=(\frac{5+7}{2},\frac{10+11 }{2} ,\frac{8+10}{2} )=(\frac{12}{2},\frac{21 }{2} ,\frac{18}{2} )\\P_{m}=(6,10.5,9)$

Therefore, the mid point of the segment PQ is $P_{m}=(6,10.5,9)$

4 0

3 years ago