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dedylja [7]
2 years ago
7

Word Questions - Fractions and Percents HELP PLEASE

Mathematics
1 answer:
svlad2 [7]2 years ago
7 0

Answer:

4a. 15 wear braces

b. 20%

5a. 140 children - 400 - 120 = 280 ... 280/2=140

b. 35%

6a. Bob got $22.50. $45 / 2 = $22.50

b. $45  - $90 / 2 = $45

Step-by-step explanation:

pls mark brainliest! <3

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What is the equation of a line that has a slope of -1/2 and goes through the point (-2,4) ?
yarga [219]

Answer:

y-2=-1/2(x+2)

Step-by-step explanation:

y-y1=m(x-x1)

4 0
3 years ago
a model plane has a scale of 1 in: 2 ft. if the real plane is 12 ft tall then how tall is the model plane.
adelina 88 [10]

Answer:

6ft tall

Step-by-step explanation:

Given we know that the scale is 1 in 2ft.

Using this information we know we could divide 12/2=6. We also know that we could multiply 2×6=12. Therefore, we know that the model plane is 6ft tall.

I hope this helps!

3 0
3 years ago
Read 2 more answers
The endpoints of the diameter of a circle are (−2, −3) and (4, −1). Which equation represents the circle?
Alika [10]

Answer:

The equation of circle is (x-1)^{2}+(y-2)^{2} = 18

Step-by-step explanation:

Given the endpoints of the diameter of a circle: (-2,-3) and (4,-1)

We know that the equation of circle is

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

where (x,y) is any point on the circle, (h,k) is center of the circle and r is radius of circle.

To find (h,k): the center is midpoint of diameter

Midpoint of diameter with end points (x1,y1) and (x2,y2) is given by

(  \frac{x1+x2}{2} , \frac{y1+y2}{2}  )

( \frac{-2+4}{2} , \frac{-3-1}{2}  )

(1,2)

Hence (h,k) is (1,2)

Substituting values of (h.k) and (x.y) as (1,2) and (4,-1) respectively in equation of circle, we get

(4-1)^{2} +(-1-2)^{2} = r^{2}

r^{2} = 18

Now substituting values of (h,k) and r^{2} in equation of circle, we get

(x-1)^{2}+(y-2)^{2} = 18

Hence the equation of circle is (x-1)^{2}+(y-2)^{2} = 18

5 0
3 years ago
Read 2 more answers
In a drawing of a
dem82 [27]
720 by 600! hope this helps
4 0
3 years ago
Find the first six terms of the sequence. a1 = -3, an = 2 ● an-1
Sindrei [870]
The first term of the sequence is -3.

According to the formula each next term will be obtained by multiplying the previous term by 2.

So, next terms will be:

Second term = 2 x First Term = 2 x (-3) = - 6

Third term = 2 x (-6) = -12

Fourth term = -24

Fifth term = -48

Sixth term = -96

So, the sequence will be:

-3, -6, -12, -24, -48, -96 ...
5 0
3 years ago
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