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Akimi4 [234]
2 years ago
10

Help me please!!!!d. car a was 45 miles east of car b.​

Mathematics
1 answer:
Rudik [331]2 years ago
4 0

Answer:

B

Step-by-step explanation

Car A started 10 miles east of Johnstown based on the fact he traveled 90 miles in 2 hours but was 100 away from Johnstown

Car B started 20 miles away, so that mean Car B was 10 more miles east than Car A when they started.

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Running from the top of a flagpole to a hook in the ground there is a rope that is 13 meters long. If the hook is 5 meters from
bagirrra123 [75]

Answer:

12 meters

Step-by-step explanation:

Looking at the problem we can see that it typifies a right angled triangle. The rope running from the top of the flagpole to the hook on the ground is the hypotenuse of the triangle. Let us call this hypotenuse c. Let the distance between the hook and the foot of the flagpole be b. Let the height of the flagpole be a.

From Pythagoras theorem;

c^2 = a^2 + b^2

a^2= c^2 - b^2

a= √c^2-b^2

From the question

c= 13 metres

b= 5 metres

a= the unknown

a= √c^2-b^2

a= √(13)^2 - (5)^2

a= √169 - 25

a= √144

a= 12 meters

6 0
3 years ago
Read 2 more answers
Which of the following is an example of a complex number that is not in the set of real numbers?
ExtremeBDS [4]

A complex number has a real and an imaginary part

4 + 9i is a complex number

A complex number is represented as:

a + bi

Where:

<em />a \to<em> real</em>

<em />bi \to<em> imaginary</em>

<em />

By comparing the options to a + bi;

-7 and 2 + \sqrt 5 are not complex numbers

This is so because they do not have imaginary parts

However,

4 + 9i is a complex number

Because; 9i is imaginary

Read more about complex numbers at:

brainly.com/question/19007885

8 0
1 year ago
Review the graph of function g(x).
dimulka [17.4K]

Answer:

c

Step-by-step explanation:

edg 2021

5 0
3 years ago
WILL GIVE ALOT OF POINTS HELP FAST One cold night the temperature was 0 degrees at 8 p.m. The temperature dropped at a constant
den301095 [7]

Answer:

4.4

Step-by-step explanation:

16.8 was for 4 hour

divide 4 by 16.8

you get 4.2 per hour

so you need 1 hour

1 hour would be 4.2

temp would be -4.2 at 9pm

4 0
3 years ago
Read 2 more answers
Can someone help me pls
Wittaler [7]

Answer:

3 cm

Step-by-step explanation:

  • V_{cylinder} = 189\pi \: cm^3 (Given)

  • h_{cylinder} = 21\: cm (Given)

  • Formula for V_{cylinder} is given as:

  • V_{cylinder} = \pi r^2h

  • \implies  189\pi = \pi r^2(21)

  • \implies \frac{ 189\pi}{21\pi} = r^2

  • \implies 9 = r^2

  • \implies \pm\sqrt 9 = r

  • \implies \pm 3 = r

  • Length of radius can not negative

  • \implies r = 3 \: cm

Hope it helps you in your learning process.

8 0
2 years ago
Read 2 more answers
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