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statuscvo [17]
2 years ago
11

I need your Help, please! THX:)

Mathematics
2 answers:
USPshnik [31]2 years ago
7 0
450 miles
1 in. Per 60 miles
460/60 = 7.5 inches
Allushta [10]2 years ago
5 0

Answer:

7.5 inches

Step-by-step explanation:

We have the scale factor 1:60.

So we can setup the equation: 1/60=x/450.

Simplify denominators: 1/2 = x/15

Cross multiply: 2x=15, so x=7.5

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tess has 100 dimes and quarters , if the total of the coins is $21.40 how many of each of the coins does she have ?? Using subst
Zanzabum

Answer: 24 and 76

Step-by-step explanation:

{

d

+

q

=

100

10

d

+

25

q

=

2140

From the first equation, we have  

d

=

100

−

q

Substituting that into the second equation, we have

10

(

100

−

q

)

+

25

q

=

2140

⇒

1000

−

10

q

+

25

q

=

2140

⇒

15

q

=

1140

⇒

q

=

1140

15

=

76

Knowing that  

q

=

76

we can substitute that value into the first equation to obtain

d

+

76

=

100

∴

d

=

24

Thus, Sue has  

24

dimes and  

76

quarters.

4 0
3 years ago
Find the inverse function of f(x) = x^3/2
horrorfan [7]

Answer:

<em>The answer is f^-1(x)=0^3</em>\sqrt{x}+2

Step-by-step explanation: Now we just change y back to f(x) and add a 0−1 to write it in inverse notation We begin with f(x)= x 3−2 . To find the inverse of any equation, just switch x and y No, before we do that, I'm going to change the equation. I'm going to rename f(x) to y , just so that I don't have to deal with the parentheses or anything. Now, all I have to do is change what f (x) is called, not it's actual value. Anyways, we have y = x 3 − 2 Now we switch x and y and then solve for y Now we've got x = y 3−2 If we add 2 on both sides we have x + 2 = y 3 Now we just need to get y as simple as possible, which we'll do by cube rooting both sides of the equation. That leaves us with y=0 3√x+2 Now we just change y back to f(x) and add a 0−1 to write it in inverse notation

4 0
2 years ago
Find y when x=4 and z=15; if y varies jointly as x and z y=5 when z=8 and x=10
Law Incorporation [45]
I think the answer to y when x=4 and z=15; if y varies jointly as x and z y=5 when z=8 and x=10 is B. Y=1/2. Y•15; 12/4.
3 0
3 years ago
Solve for T: 10t-4x=3S Explanation plz
kifflom [539]
T=3s/10+2x/5 hope this helped <3
4 0
3 years ago
Estimate the solution of the equation x-8.1=5.3 to the nearest whole number PLEASE HURRY
larisa [96]
13.4=5.3+8.1=x this is the answer
7 0
3 years ago
Read 2 more answers
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