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4 years ago

Write two equivalent ratios for 8 and 9

Mathematics

1 answer:

Lemur [1.5K]4 years ago

6 0

Answer:

16:18

24:27

Step-by-step explanation:

16:18 ( multiply both numbers by 2)

24:27 ( multiply both numbers by 3)

Hope this helped even tho I am late

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Multiply 3[1 5 -5 6 0 0]

Mrac [35]

Answer:

-16755

Step-by-step explanation:

3(15 - 5600)

multiply 15 and 5600 by 3

45 - 16800

subtract 45 by 16800

-16755

PLEASE MARK ME BRAINLIEST

5 0

4 years ago

Read 2 more answers

A linear function has the same y-PLEASE PLEASE HELP!!!!intercept as x+2y=10 and it’s graph contains the point (9,7) find the slo

Anastasy [175]

Answer:

I think it is 2/9 or 0.22

Step-by-step explanation:

You know they have the same y intercept, so first you should find the y intercept of the givern equation.

x+2y = 10

2y = -x + 10 [subtract x]

y = -.5x + 5 [divide by 2]

Now you have the equation in graph form, and know the y intercept is 5.

If the unknown function has the same y intercept, you know it contains the point (0,5), and it is given that it includes the point (9,7)

now that you have two points, you can use slope formula.

(y2 - y1)/(x2-x1)

(change in y)/(change in x)

so,

(7-5)/(9-0) = 2/9 = 0.2

someone please correct me if i'm wrong:)

7 0

3 years ago

Use the given information to find the exact value of the expression. sin α = 2129 21 29 , α lies in quadrant II, and cos β = 151

beks73 [17]

The correct question is
Use the given information to find the exact value of the expression. sin α = 21/29, α lies in quadrant II, and cos β = 15/17, β lies in quadrant I Find sin (α - β).

we know that
sin(α − β) = sin α cos β − cos α sin β

α lies in quadrant II
so
cos α is negative
sin α is positive

β lies in quadrant I
so
cos β is positive
sin β is positive

step 1
find sin β
cos β=15/17
sin² β+cos² β=1-----------> sin² β=1-cos² β----> sin² β=1-(15/17)²
sin² β=1-225/289-----> 64/289
sin β=8/17

step 2
find cos α
sin α = 21/29
cos² α + sin² α=1----> cos² α=1-sin² α---> cos² α=1-(21/29)²---> 1-441/841
cos² α=400/841------> cos α=-20/29 (remember cos α is negative)

step 3
find sin(α − β)
sin α = 21/29 cos α=-20/29
sin β=8/17 cos β=15/17

sin(α − β) = [21/29]*[15/17] − [-20/29*]*[8/17]
sin(α − β) = [315/493] − [-160/493]
sin(α − β) = 475/493

the answer is
sin(α − β) = 475/493

3 0

4 years ago

Alfredo bought a used car for $1500. He replaced the engine and repaired the body. He sold the car for $4500. What was the rate

patriot [66]

The rate of the car increased by $3000

5 0

3 years ago

Assume that the amount of time that it takes an employee to service a car at an oil change facility follows the uniform probabil

Andru [333]

Answer:

Option A - 4.91

Step-by-step explanation:

The formula for theoretical standard deviation of uniform distribution is;

σ = √{(b-a)^2}/12

Now from the question, b = 38 minutes and a= 21 minutes

Therefore, σ = √{(38-21)^2}/12

= √{17^2}/12 = √289/12 = 4.907 which is approximately 4.91

8 0

3 years ago