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3 years ago

24% of 289= Estimate using a rate per 100

Mathematics

1 answer:

ss7ja [257]3 years ago

4 0

use the equation is over of equals percent over 100 so it would x over 289 equals 24 over 100. and then you cross multiply and then find x.

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How do you do r/12 =1.5 ??

Brrunno [24]

Answer:

multiply by 12: r = 18

Step-by-step explanation:

Use the multiplication property of equality. It tells you that multiplying both sides of an equation by the same value does not change the values of any of the variables. Here we can multiply by 12 and we get ...

r(12/12) = 1.5(12)

Now, the properties of the identity element for multiplication come into play. When we multiply r by 12/12=1, we do not change the value of r, so we can simplify this to ...

r = 18

_____

We chose to multiply by 12 precisely because 12/12 = 1, and the result on the left side of the equation is r.

7 0

3 years ago

For each triangle, find the value of x and find the missing angle(s)

Vikki [24]

Answer:

$71° = m∠G$

$54° = m∠T$

$10 = x$

Step-by-step explanation:

Use the Triangular Interior Angles Theorem to figure this out:

180° = [7x + 1]° + [6x - 6]° + 55°

180° = [−5 + 13x]° + 55°

180° = [50 + 13x]°

-50° - 50°

____________

$\frac{130°}{13} = \frac{[13x]°}{13} \\ \\ 10° = x$

You then plug this back into all three expressions to get 71° as the measure of ∠G and 54° as the measure of ∠T.

I am joyous to assist you anytime.

8 0

3 years ago

Equation 1: 8x+2y=308x+2y=30

Tems11 [23]

Answer:

Part a) We should try to eliminate the y's because the coefficients are the same

Part b) The solution is the point (6,-9)

Step-by-step explanation:

Part a) Which variable pair should we try to eliminate?

we have

$8x+2y=30$ ----> equation 1

$7x+2y=24$ ----> equation 2

Solve by elimination

We should try to eliminate the y's because the coefficients are the same

Part b) What is the solution to the system?

Multiply equation 2 by -1 both sides

$-1(7x+2y)=-1(24)$

$-7x-2y=-24$ -----> equation 3

Adds equation 1 and equation 3

$8x+2y=30\\-7x-2y=-24\\-------\\8x-7x=30-24\\x=6$

Find the value of y

$8x+2y=30[/tex[tex]8(6)+2y=30$

$2y=30-48$

$y=-9$

The solution is the point (6,-9)

8 0

3 years ago

A standard american eskimo dog has a mean weight of 30 lbs with a standard deviation of 2 pounds. What is the range of weights w

Oksi-84 [34.3K]

Answer:

A and B ( page 12 and page 20 )

Step-by-step explanation:

1/4 of an hour he read 9 pages ( 15 mins ) ( 60 / 1 hour divided by 4 = 15 ) In other words 9 pages in 15 mins. To get to an hour u gotta multiply by 4. 15x4=60 9x4=36 ( 1 hour of reading is 36 pages read )

60 divided by 3 = 20

36 divided by 3 = 12 for sure it’s A and B

6 0

2 years ago

What is the point-slope form of a line with slope -4 that contains the point

adoni [48]

Answer:

y-3 = -4(x+2)

Step-by-step explanation:

Point slope form is

y-y1 = m(x-x1) where m is the slope and (x1,y1) is a point on the line

y-3 = -4(x --2)

y-3 = -4(x+2)

3 0

2 years ago