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Crank
3 years ago
15

Find an equivalent ratio of 3:7 by filling the missing number. 3:7 = 12: Enter the answer

Mathematics
1 answer:
Katena32 [7]3 years ago
8 0
28
3/7 = 12/x
x = (12*7)/3
x = 84/3
x = 28
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Emma started biking to the coffee shop traveling 15 mph, after some time the bike got a flat so Emma walked the rest of the way,
serious [3.7K]

Answer:

75\text{ miles, }28\text{ miles}

Step-by-step explanation:

GIVEN: Emma started biking to the coffee shop traveling 15 \text{mph}, after some time the bike got a flat so Emma walked the rest of the way, traveling 7 \text{mph} If the total trip to the coffee shop took 9 \text{hours} and it was 103 \text{miles} away.

TO FIND: how long did Emma travel at each speed.

SOLUTION:

Let the distance traveled by Emma through bike is \text{x}

Total time taken when traveled by bike =\frac{\text{x}}{15}

Distance traveled through feet =103-\text{x}

Total time taken when traveled by feet =\frac{103-\text{x}}{7}

Now,

Total time taken =9\text{hours}

\frac{\text{x}}{15}+\frac{103-\text{x}}{7}=9

8\text{x}=600

\text{x}=75

Distance traveled through feet =103-75=28\text{miles}

Hence distance traveled using bike is 75\text{miles} and by feet is 28\text{miles}

4 0
3 years ago
Can someone help me on number 30 please
Bingel [31]

Answer:

24 divided by 3/4 =32

i got it bc 3/4 as a decimal Is 0.75 so 24 divided by 0,75 is 32 :)

Step-by-step explanation:


6 0
3 years ago
No multiple choice just solve
marta [7]
Y=ab^x
logab=x

log7(1/343)=-3

y=7(1/343)^-3
4 0
3 years ago
Christopher is 20 years younger than ishaan. ishaan and christopher first met two years ago. fourteen years ago, ishaan was 3 ti
velikii [3]
<span>you need to set up the equations solve for x or y. and substitute. I can give you the starting equations, but i cant find the answer and I don't remember how to do all the steps, but the first two equations (the ones you use to solve for x or y to use to solve for a number to subsitute. x-12=y y-14=3x and there should be one more for that they met two years ago.</span>
4 0
3 years ago
Read 2 more answers
(15) ? Is this correct or am I missing something, thanks :)
svetoff [14.1K]
You are correct!

Step 1:Write what you know
Madeline's Height: 6 ftMadeline's Shadow: 108 in
Friend's Height: X (we use X as a variable because his height is unknown)Friend's Shadow: 108 in - 1.5 ft                              108 in - 18 in                                 90 in
Step 2:Set up proportions
6          x----- = -----108      90 
Step 3:Cross Multiply & Solve
108x = 540x = 5 ft tall

4 0
3 years ago
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