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Art [367]
2 years ago
6

If a bike travels 15m in 2 sec, what is its speed in km/h?

Mathematics
1 answer:
zysi [14]2 years ago
3 0

Answer:

27km/h

Step-by-step explanation:

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A number divided by 3 less then itself gives a quotient of 8/5. Find the number
Airida [17]
We Can Let "A Number" Be M.
M Divided By 3 Less Than Itself Gives Quotient Of 8/5.
M/(M-3) = 8/5. Lets Solve.

\frac{M}{(M - 3)}  =  \frac{8}{5}
So, What Number Can Have 3 Subtracted From It To Get Five, But Also Be Equal To Eight?
Eight Of Course!!!
So, We Know That The Number Equals 8.
8 0
3 years ago
Suppose you have a five dollar off coupon at a fabric store you buy a fabric that cost $10 per yard
Lunna [17]
<h3>Answer:</h3>

1.) 10x-5=y

2.) $85

3.) 5.25 yards of fabric.

<h3>Step-by-step explanation:</h3>

1.) To write an equation for this problem, we need to figure out what every value means:

the variable x, represents the amount of yards of fabric you can buy

the variable y, represents the total amount of money after you found out (x) or the amount of yards of fabric.

1 yard of fabric equals $10, and we have a $5 coupon (-5)

Our equation is:

10x-5=y

This equation represents the relationship between the total cost of fabric, and the amount that you can buy.

2. In order to solve this problem we need to use our equation, one value is given which is 9.

9 represents x, the amount of yards of fabric.

Substitute 9 into x:

10(9)-5=y

<h3>Solve:</h3>

90-5=y

85=y

85 represents the cost of 9 yards of fabric, including the $5 coupon.

3.) This problem is similar to #2, although it's flipped.

The value given is $47.50, which represents (y), the total amount of money after (x) was found out.

But, we need to figure out (x).

Substitute $47.50 into (y):

10(x)-5=$47.50

Next, we need to figure out x by solving the opposite.

Adding the coupon to our answer can represent 10(x).

$47.50+5=52.50

10(x)=52.50

Lastly, divide both sides of the equation by 10.

10(x) / 10=52.50 /10

x=5.25

5.25 represents the amount of yards of fabric purchased if you paid $47.50.

7 0
2 years ago
Log 3(x+5)- log 3(x-3) = 2
inessss [21]

Answer:

x = 4

Step-by-step explanation:

solate the variable by dividing each side by factors that don't contain the variable.

7 0
3 years ago
Read 2 more answers
The Perimeter of the park is 318 m. Determine the length of the park<br><br> PLEASE HELP!!!!!!!!!
Vadim26 [7]

Answer:

79.5m

Step-by-step explanation:

8 0
3 years ago
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Simplify this expression. Enter your answers in the boxes.<br><br> 8.9 – 1.4x + (–6.5x) + 3.4
densk [106]

Answer:

12.3-7.9x

Step-by-step explanation:

8.9+3.4=12.3

-1.4x+(-6.5x)=-7.9x

5 0
3 years ago
Read 2 more answers
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