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2 years ago

. Chandra is buying music for $1 per song.

Mathematics

1 answer:

Zigmanuir [339]2 years ago

3 0

Answer:

7 songs

Step-by-step explanation:

it would be 7 songs because if you divide 14 by 2 you will end up with 7. The price of two songs are the price of one with a coupon therefore she has spent $14 for 7 songs.

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Math 15

avanturin [10]

Answer:

c. 126.27 square feet

Step-by-step explanation:

Area of rhombus is:

A = pq/2, where p and q are diagonals

We have:

p = 18.3 ft
q = 13.8 ft

The area is:

A = 18.3*13.8/2 = 126.27 ft²

Correct choice is C

4 0

2 years ago

(w+3)^2=2w^2+10w+12, solve for w

max2010maxim [7]

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6 0

3 years ago

Please help, will give brainlist

Marrrta [24]

Answer:

Step-by-step explanation:

compare the divisor x+1 with x-a which will be -1 then use remainder theorem to get your answer

5 0

2 years ago

A circle is centered at the point (-7, -1) and passes through the point (8, 7).The radius of the circle is____ units. The point

denis-greek [22]

Answer:

Part 1) The radius of the circle is r=17 units

Part 2) The points (-15,14) and (-15,-16) lies on this circle

Step-by-step explanation:

step 1

Find the radius of the circle

we know that

The distance between the center of the circle and any point on the circle is equal to the radius of the circle

the formula to calculate the distance between two points is equal to

$d=\sqrt{(y2-y1)^{2}+(x2-x1)^{2}}$

we have

(-7, -1) and (8, 7)

substitute

$r=\sqrt{(7+1)^{2}+(8+7)^{2}}$

$r=\sqrt{(8)^{2}+(15)^{2}}$

$r=\sqrt{289}$

$r=17\ units$

step 2

Find out the y-coordinate of point (-15,y)

The equation of the circle in standard form is equal to

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

where

(h,k) is the center

r is the radius

substitute the values

$(x+7)^2+(y+1)^2=17^2$

$(x+7)^2+(y+1)^2=289$

Substitute the value of x=-15 in the equation

$(-15+7)^2+(y+1)^2=289$

$64+(y+1)^2=289$

$(y+1)^2=289-64$

$(y+1)^2=225$

square root both sides

$(y+1)=(+/-)15$

$y=-1(+/-)15$

$y=-1(+)15=14$

$y=-1(-)15=-16$

therefore

we have two solutions

point (-15,14) and point (-15,-16)

see the attached figure to better understand the problem

8 0

3 years ago

Which table has a constant of proportionality between y and x of 1.5

Cerrena [4.2K]

Answer:

Step-by-step explanation:

In a proportional relationship the constant of proportionality k is

k = $\frac{y}{x}$

Check this ratio for each of the values

$\frac{7.5}{5}$ = 1.5 , $\frac{19.5}{13}$ = 1.5 , $\frac{33}{23}$ = 1.4347.... ← Thus not A

$\frac{9.5}{8}$ = 1.1875 ← Thus not B

$\frac{12}{8}$ = 1.5 , $\frac{13.5}{9}$ = 1.5 , $\frac{27}{18}$ = 1.5

Thus the table with k = 1.5 is Table C

3 0

3 years ago

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