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3 years ago

Find y when x=10. If y=8 when x=20.

Mathematics

2 answers:

ohaa [14]3 years ago

8 0

(x,y)
(10,y)
(20,8)
y=4

Misha Larkins [42]3 years ago

6 0

Y=4. Because half of 20 is 10 and half of 8 is 4. If this helps please consider answering my question.

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(2+2w)⋅4+9(w+3) please answer this I am very confused

defon

Answer:

17w+35

Step-by-step explanation:

(2+2w)⋅4+9(w+3)

Distribute the 4 and the 9

2*4 + 2w*4 +9*w+9*3

8+8w +9w +27

Combine like terms

8w+9w +8+27

17w +35

8 0

3 years ago

Read 2 more answers

Decrease 40 by 12.5%

vredina [299]

Answer:

Step-by-step explanation:

Multiply 40 by 0.125 (12.5%) and you get 5

Subtract 5 from 40

6 0

3 years ago

Help plz. I will give brainliest (:

stellarik [79]

Answer:

f(2)=g(0) and f(0)=g(4)

3rd option for the second pic

5 0

2 years ago

Caroline resting heart is 52 beats per minute (bpm). When she starts running her heart rate increases 1.25% each second until it

horsena [70]

Answer:74.55 beat per minute

Step-by-step explanation:

Given

Heart beat is 52 beat per minute

i.e. $B=\frac{52}{60}$ beat per sec

If heart rate is increases 1.25 % each sec

suppose B is the heart beat at first second therefore heat beat at 2 nd second

$B_2=B+1.25 \% B$

$B_2=B(1+1.25 \% )$

For 3 rd sec

$B_3=B(1+1.25\%)+1.25\%B(1+1.25\%)$

$B_3=B(1+1.25\%)^2$

similarly for 3 sec

$B_{30}=B(1+1.25\%)^{29}$

$B_{30}=1.433B$

$B_{30}=1.242\ \text{beat per second }$

$B_{30}=74.55\ \text{beat per minute}$

4 0

3 years ago

Question b with explanation?

Step2247 [10]

Hello!

The answer is 40. All we have to do is find the number of 16 year olds who spent between 25-35 minutes in social media. That is 145. The number of 13 year olds who spent the same amount of time is only 105, therefore 40 more 16 year olds spent between 25 and 35 minutes on social media.

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2 years ago