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3 years ago

Find a different ratios that is equivalent to 7:3.

Mathematics

1 answer:

valina [46]3 years ago

7 0

Answer:

21:9

Step-by-step explanation:

when you divide 21 and 9 by 3, you get 7 and 3 respectively

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Suzanna walked two over seven of a mile in two over five of an hour. What is her unit rate in miles per hour? two sevenths over

Lorico [155]

Answer:

5/7 mile per hour.

Step-by-step explanation:

Divide 2/7 by 2/5 to get to 0.714. After that, convert the decimal to a fraction and you get your answer.

Hope this helped!!! <3 :)

5 0

4 years ago

While shopping, Dawn finds a backpack that she likes on the sale rack. Its original price is $60,

Nadya [2.5K]

No. Because 33 $ is the money deducted from the 60 $. Dawn bought everything for less than 60 $.

So, if Dawn purchases everything on the rack with a 30% discount and 15% coupon the total will indeed make 45%.

We have to take 100% - 45%= 55% to know the reduction number. Let's proceed to the calculations now.

100%= 60 $

1%=60/100

55%= 60/100 × 55 = 33 $

Now NOTE; 33 $ is the money reduced from the 60 $. So, logically, 33 $ isn't the amount which Dawn purchased the whole rack. 

To find the amount at which she purchased everything, we need to do,

60 $ - 33 $ = 27 $

6 0

3 years ago

What is the difference?

slega [8]

Answer:

<h3>The answer is option D.</h3>

Step-by-step explanation:

First we must first find the LCM

The LCM of x² + 3x + 2 and (x + 2)(x + 1 ) is

x² + 3x + 2

So we have

$\frac{x}{ {x}^{2} + 3x + 2 } - \frac{1}{(x + 2)(x + 1)} \\ \\ = \frac{x - 1}{ {x}^{2} + 3x + 2 }$

Hope this helps you

3 0

3 years ago

Read 2 more answers

Determine the general solution of: sin 3x - sin x = cos2x

SpyIntel [72]

Sin³ x-sin x=cos ² x

we know that:
sin²x + cos²x=1 ⇒cos²x=1-sin²x
Therefore:

sin³x-sin x=1-sin²x
sin³x+sin²x-sin x-1=0

sin³x=z

z³+z²-z-1=0

we divide by Ruffini method:
1   1 -1 -1
1 1 2 1 z=1
-------------------------------------
1   2 1 0
-1   -1 -1 z=-1
--------------------------------------
1 1 0 z=-1

Therefore; the solutions are z=-1 and z=1

The solutions are:
if z=-1, then
sin x=-1   ⇒x= arcsin -1=π+2kπ (180º+360ºK) K∈Z

if z=1, then
sin x=1   ⇒ x=arcsin 1=π/2 + 2kπ (90º+360ºK) k∈Z

π/2 + 2kπ U   π+2Kπ=π/2+kπ k∈Z ≈(90º+180ºK)

Answer: π/2 + Kπ or 90º+180ºK K∈Z
Z=...-3,-2,-1,0,1,2,3,4....

6 0

3 years ago

A geologist noticed the land along a fault line moved 24.8 centimeters over the past 175 years. On average how much did the land

vodka [1.7K]

Find the unit rate:

That would be 24.8 cm
------------ = 0.14 cm/yr average
175 yr

8 0

4 years ago