Ask question

Ask question

All categories

3 years ago

7

Sally was able to drive

1 answer:

aliina [53]3 years ago

6 0

Remark
Average in this case does not mean you take (s1 + s2)/2. What average speed means is Total Distance / Total Time.

Formula
Average speed(s) = Total Distance / Total Time

Givens
Total Distance = 252 + 30 = 282 miles
Total Time = 5 hours.

Substitute and Solve
Average speed = 282 / 5
Average speed = 56.4 miles / hour <<<<< Answer.

The other facts are not used.

You might be interested in

What is -18x - x = 5x -6 PLEASE ANSWER CORRECTLY IT IS MY HOMEWORK

uysha [10]

Answer:

$\large\boxed{x=\dfrac{1}{4}}$

Step-by-step explanation:

$-18x-x=5x-6\\\\-19x=5x-6\qquad\text{subtract}\ 5x\ \text{from both sides}\\\\-19x-5x=5x-5x-6\\\\-24x=-6\qquad\text{divide both sides by (-24)}\\\\\dfrac{-24x}{-24}=\dfrac{-6}{-24}\\\\x=\dfrac{6:6}{24:6}\\\\x=\dfrac{1}{4}$

7 0

3 years ago

Kate has a coin collection. She keeps seven of the coins in a box, which is only 5% of her entire collection. What is the total

tia_tia [17]

Answer:

D. 140

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Which expressions are equivalent to <br> x+x+x+2?

Alexxandr [17]

Answer:

3x + 2

Step-by-step explanation:

x = 1x but leaving the x alone equals the exact thing.

If there are x + x + x, this means 3x since it is also

1x + 1x + 1x.

This is another expression for 3x + 2.

8 0

3 years ago

Read 2 more answers

If f(x)=x^2+1 and g(x)=3x+1, find 2f(1)+3g(4)

Lynna [10]

Finding f(1):
f(1)=1^2+1
=2
finding 2f(1):
2f(1)=2*2
=4
finding g(4) first:
g(4)=3*4+1
=13

finding 3g(4):
3g(4)=13*3
=39
now 2f(1)+3g(4)
=4+39
=43

6 0

4 years ago

Which expressions are equivalent to 2(4f+2g)2(4f+2g)2, left parenthesis, 4, f, plus, 2, g, right parenthesis ?

ruslelena [56]

Answer:

The equivalent expressions are:

$8f+4g$

and

$4(2f+g)$

Step-by-step explanation:

The given expression is $2(4f+2g)$

We want to find an expression that is equivalent to the above expression.

One way to do this is to expand the parenthesis.

Recall the distributive property: $a(b+c)=ab+bc$

We apply this property to get:

$2(4f+2g)=2*4f+2*2g$

When we simplify further we get:

$2(4f+2g)=8f+4g$

Another way to this is to factor completely to get:

$2(4f+2g)=4(2f+g)$

Therefore the equivalent expressions are:

$4(2f+g)$ and $8f+4g$

7 0

3 years ago

Read 2 more answers