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3 years ago

15 points!!!!!!!

Mathematics

1 answer:

Ivanshal [37]3 years ago

8 0

Original figure = 24
Output figure = 18

(24 - 18)/24 = 6/24 = 1/4 This is the loss.

18/24 = 3/4 is the scale factor. Choice D.

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The cost of 6 CDs are $12, $13, $20, $20, $12.50 and $18.50. What is the range?

ra1l [238]

I think $8. That’s the difference between the highest and lowest number.

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3 years ago

Use the net to find the surface area of the rectangular prism.

MrRissso [65]

The answer is B) 120 cm2

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3 years ago

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A parabola has an x-intercept of -1, a y-intercept of -3, and a minimum of -4 at x = 1.

torisob [31]

Answer:

The graph in the attached figure

Step-by-step explanation:

we know that

The equation of a vertical parabola in vertex form is equal to

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

where

a is a coefficient

(h,k) is the vertex

In this problem we have

(h,k)=(1,-4)

substitute

$y=a(x-1)^{2}-4$

we have

An x-intercept of (-1,0)

substitute and solve for a

$0=a(-1-1)^{2}-4$

$0=4a-4$

$4a=4$

$a=1$

The equation is

$y=(x-1)^{2}-4$

<u><em>Verify the y-intercept</em></u>

For x=0

$y=(0-1)^{2}-4$

$y=-3$

The y-intercept is the point (0,-3) -----> is correct

using a graphing tool

see the attached figure

4 0

4 years ago

Use the Law of Sines to find the missing angle of the triangle. Find m<b to the nearest tenth.

defon

1. By the Law of Sines, you have:

SinA/a=SinB/b=SinC/c

2. You don't need the fraction SinC/c, so you can eliminate it. Then:

SinA/a=SinB/b

A=40°
a=19
B=m∠b
b=13

3. When you substitute this values into SinA/a=SinB/b, you obtain:

SinA/a=SinB/b
Sin(40°)/19=SinB/13
SinB=13xSin(40°)/19
m∠b=SinB^-1(13xSin(40°)/19)
m∠b=26.1°

Therefore, the answer is: 26.1 degrees.

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3 years ago

2 thousands + 12 hundreds the sum in standard form

brilliants [131]

3200 is what I guess lol

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4 years ago

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