Ask question

Ask question

All categories

1 year ago

6

(d) A car travels at an average speed of 80 km/h. How far does it travel in: (1) 2 hours? (11) 12 minutes?

1 answer:

zepelin [54]1 year ago

3 0

Answer is (1) 160 km in 2 hours and
(2) 16 miles in 12 minutes.

Step by step.
80 km / 1 hour = x km /2 hours
Cross multiply =
x = 160

The second one requires a little more math. Because we are looking at how far in minutes, we change the rate of 80km in 1 hour to 80 km in 60 minutes.
80 km / 60 = x / 12
Cross multiply
12x = 960
Solve for x by dividing both sides by 12
X = 16

I did the math on a print screen to explain the cross multiply.

You might be interested in

Find x step by step (10 points)

AleksandrR [38]

Answer:

$\sqrt{(n-m)(n+m)}$ & $-\sqrt{(n-m)(n+m)}$

Step-by-step explanation:

1) Subtract $m^{2}$ from both sides. This should leave you with $x^{2}=n^{2}-m^{2}$ .

2) Square root both sides. This should leave you with $x=\sqrt{n^2-m^2}$ & $x=-\sqrt{n^2-m^2}$ .

<em>You can stop here if this is what the problem is asking for. However, it is not fully simplified.</em>

<em />

3) Factor the equation. This should leave you with $\sqrt{(n-m)(n+m)}$ & $-\sqrt{(n-m)(n+m)}$ .

4 0

3 years ago

Read 2 more answers

Write the contrapositive of the conditional statement. Determine whether the contrapositive is true or false. If it is false, fi

Mila [183]

If you are 16 years old then you are a teenager Question 14

6 0

3 years ago

54 x 120575957 divided by 12

ruslelena [56]

542,591,806.5

.............................

4 0

2 years ago

Read 2 more answers

Which of the following options is equivalent to 140%? Select all that apply.

bija089 [108]

There aren’t any options, use a picture?

3 0

3 years ago

P(A) = .6, P(B) = .3, P(Β | A) = .5

Reika [66]

Answer:

A

Step-by-step explanation:

$P(B|A)=\frac{A ~and~B}{P(A)} \\0.5=\frac{P(A and B)}{0.6} \\P(A~and~B)=0.5 \times 0.6=0.30$

8 0

2 years ago