Ask question

Ask question

All categories

3 years ago

11

The trucker completed the 840 kilometer haul in 10 hours and 30 minutes. What was the trucker's average speed in kilometers per

hour? Show your work.

1 answer:

VARVARA [1.3K]3 years ago

8 0

1/ 1/5h=3/2h

848 : 3/2=560

560 km per hour

You might be interested in

on the beach boardwalk there are 20 different places to get food. twenty percenct of them are ice cream shops. how many ice crea

Rom4ik [11]

Answer:

4 of the shops are ice cream shops.

Step-by-step explanation:

If you take 20 and multiply it by .20 (because when multiplying by a percent we move the decimal over twice) you will get that 4 of the shops are ice cream shops.

$(.20) * (20) = 4$

<em>Hope this helps!!</em>

<em>- Kay :)</em>

8 0

3 years ago

Right △ABC has its right angle at C, BC=4 , and AC=8 .

PolarNik [594]

Answer:

Part A) $sin(A)=\frac{\sqrt{5}}{5}$

Part B) $tan(B)=2$

Part C) $sec(A)=\frac{\sqrt{5}}{2}$

Step-by-step explanation:

see the attached figure to better understand the problem

step 1

Find the length side AB (hypotenuse of the right triangle)

Applying the Pythagorean Theorem

$AB^2=BC^2+AC^2$

substitute the given values

$AB^2=4^2+8^2$

$AB^2=80$

$AB=\sqrt{80}\ units$

simplify

$AB=4\sqrt{5}\ units$

step 2

Find sin(A)

we know that

In the right triangle ABC

$sin(A)=\frac{BC}{AB}$ ----> by SOH (opposite side divided by the hypotenuse)

substitute the given values

$sin(A)=\frac{4}{4\sqrt{5}}=\frac{\sqrt{5}}{5}$

step 3

Find tan(B)

we know that

$tan(B)=\frac{AC}{BC}$ ----> by TOA (opposite side divided by adjacent side)

substitute the values

$tan(B)=\frac{8}{4}=2$

step 4

Find sec(A)

we know that

$sec(A)=\frac{1}{cos(A)}$

$cos(A)=\frac{AC}{AB}$ ----> by CAH

so

$sec(A)=\frac{AB}{AC}$

substitute the values

$sec(A)=\frac{4\sqrt{5}}{8}$

simplify

$sec(A)=\frac{\sqrt{5}}{2}$

3 0

4 years ago

A lake measures 600 ft wide. A lodge is on one shore. From Rob’s point on the opposite shore, the angle of elevation to the top

GalinKa [24]

The lodge is 154.15 feet tall.

6 0

4 years ago

I'LL MARK BRAINLIEST !!!

V125BC [204]

Answer:

it is 5 if im not mistaken

5 0

3 years ago

Determine the IQR for this set of data. 12, 13, 14, 15, 17, 18, 19, 19, 22, 23<br> 14 <br> 17.5

VladimirAG [237]

Answer:5

Step-by-step explanation:

4 0

3 years ago