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2 years ago

Helppp idk what .....

Mathematics

1 answer:

weqwewe [10]2 years ago

5 0

Answer:

the two triangles are similar

reasons are

(a) both are right angled triangles

(b) both are scalene triangles

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It takes Fred 32 minutes to type and spell check 5 pages of a manuscript. Find how long it takes

sveta [45]

Answer:

Step-by-step explanation:

$we \: rounded \: it \: to \: the \: nearest \: whole \: number$

6 0

2 years ago

A) what is average rate of change of f(x) over the interval from x=5 to x=9? (table shows values of f(x). graph shows function o

SVETLANKA909090 [29]

Answer:

See below for answers and explanations

Step-by-step explanation:

Part A

The average rate of change of a function over the interval $[a,b]$ is equal to $\frac{f(b)-f(a)}{b-a}$ , hence:

$\frac{f(b)-f(a)}{b-a}\\\\\frac{f(9)-f(5)}{9-5}\\\\\frac{14-(-4)}{9-5}\\ \\\frac{14+4}{4}\\ \\\frac{18}{4}\\ \\\frac{9}{2}$

Therefore, the average rate of change of $f(x)$ over the interval $[5,9]$ is $\frac{9}{2}$ .

Part B

Do the same thing as in Part A:

$\frac{f(b)-f(a)}{b-a}\\ \\\frac{f(1)-f(0.25)}{1-0.25}\\ \\\frac{2-5}{0.75}\\ \\\frac{-3}{0.75}\\ \\-4$

Therefore, the average rate of change of $g(x)$ over the interval $[0.25,1]$ is $-4$ .

Part C

To interpret our answer from Part B in terms of the real world it represents, we say that between 0.25 seconds and 1 second, the ball falls at a rate of 4 feet per second (since our average rate of change is negative).

5 0

1 year ago

Please help asap! 13 points!

Step2247 [10]

B that's your answer

7 0

2 years ago

A regular pentagon ABCDE is shown Work out the size of X

nikdorinn [45]

The sum of the angles in a pentagon is 540°.

This means that each angle is 108°.

Inside you pentagon, a triangle is drawn. This triangle is isosceles, because the corners are on the points of the regular pentagon. You know that angle C is 108°.

Angles in a triangle add up to 180°.

B and D will be the same size as this is isosceles.

180°-108° = 72°

This is B and D. You only need one of these, so you divide by 2.

The answer is 36°.

Hope this helps :)

7 0

2 years ago

Read 2 more answers

Hey can you please help me posted picture of question

AnnZ [28]

I think choice a would be the correct answer. 90.

8 0

3 years ago