All categories

2 years ago

Set up Proportion and solve for X

Mathematics

2 answers:

Komok [63]2 years ago

6 0

Answer:

x/90 = 13/130(you can simplify this btw)

x90 x90

X = 9

Make both of them ratios

X to 90 and pick another random one 13 to 130.

Make sure to make them equal to eachother then just solve for x.

You can also compare it to 9 to 90

It would still work:

x/90 = 9/90

x90 x90

X = 9, x would also equal 9

Galina-37 [17]2 years ago

3 0

Answer:

x = 9

Step-by-step explanation:

Assuming the rectangles are similar

13 x

------ = ---------

130 90

Using cross products

13*90 = 130*x

Divide each side by 130

13*90/130 = x

x = 9

You might be interested in

Solve 2tan(x)cos^2(x)=1 algebraically

deff fn [24]

X= pi/4 +k(pi)
(This may not be correct sorry)

7 0

1 year ago

PLEASE HURRY IM TIMED Andy drove 102 miles on Monday morning. This was

konstantin123 [22]

Answer:

420

Step-by-step explanation:

6 0

2 years ago

A migrating bird flies 539 miles in 11 hours. How many miles does it fly in 3 hours?

joja [24]

It would fly 147 miles in 3 hours

8 0

2 years ago

Read 2 more answers

Different varieties of field daisies have numbers of petals that follow a fibonacci sequence.Three varieties have 13,21, and 347

EleoNora [17]

The answer is letter d. The Fibonacci Sequence states to add the 2 previous number to get the next number starting with 1. So, 1 + 0=1, 1+1=2, 1+2=3, 2+3=5,3+5=8, 5+8=13, etc....

I added 13+21 to get 34. Then add 21+34 to get 55. Then add 34+55 to get 89.

7 0

3 years ago

As baby boomers enter their golden years, the number of people afflicted with Alzheimer's disease is expected to rise dramatical

dybincka [34]

Answer:

Step-by-step explanation:

Given that the number of people with Alzheimer's disease in the United States age 65 years and over is projected to be

$N(t) = 0.00525t^2 +0.075t+4.7,(0 ≤ t ≤ 4)$

where N is in millions where year 2010 corresponds to t=0

For 2020, 10 years lapsed hence t= 1

a) $N(1) = 0.00525(1)^2 + 0.075(1) + 4.7\\=4.78025$

So 4.78025 million people

b) Growth = N(1)-n(0) =0.08025 million

c) N(4) = 5.084

Average rate of change = (5.084-4.7)/4 =0.096 million per decade

4 0

3 years ago