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3 years ago

I NEED HELP PLEASE PLEASE

Mathematics

1 answer:

kondor19780726 [428]3 years ago

8 0

Answer:With what there’s nothing to help you with when I can’t see a picture or something

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In the figure above, what is the area of triangle QRS?

Vlad [161]

Answer:

D) 20.

Step-by-step explanation:

First find the value of x using Pythagoras theorem:

10^2 = x^2 + (2x)^2

5x^2 = 100

x^2 = 20

x = √20

= 2√5.

So the area of triangle

= 1/2 * base * height

= 1/2 * 2x * x

= x^2

= (2√5)^2

= 20.

6 0

1 year ago

The sketch shows the distance three runners travel during a race. Describe what occurs at times A,B,C and D. In what order do th

goldfiish [28.3K]

Answer:

Notice that the distance is in the y-axis, and the time in the x-axis.

First, let's see what happens in the four points:

A) You can see that in point A, the steepness of the line increases, this means that the speed of the runner increases in that point.

B) In this point, the runner that increased his/her speed in point A crosses the graph of another runner, this means that they are at the same distance to the end and at the same time.

C) In this point again two runners are at the same distance and the same time, and we also can see that the runer that increased his/her speed at point A, now has reached the end of the race (because his line stops increasing, wich means that he/she already finished the race)

D) The las runner finishes the race at point D.

Then the first runner that finishes the race is the one with the shorter graph (shorter graph means that he ran for less time than the others, wich means that he/she finished first)

The last runner is the one that finished at point D,

The middle one finishes right after the point C.

6 0

3 years ago

1/2(6а + в) <br> Please answer

Tom [10]

Answer:

12a + .5B

B= -6a

a=.042B

Step-by-step explanation:

1/2(6a+B)= 12a+.5B

1/2(6a+B)=0

-12a=.5B

-6a=B

12a=-.5B

a=.042B

7 0

2 years ago

Brady uses 3 balloons to make one decoration for a school party. If he has 400 balloons,which equation below uses compatible num

lara31 [8.8K]

Answer: the answer is b

Step-by-step explanation:

If you take 400 balloons and divide it by 3 balloons; its cause 3 balloons make 1 decoration you get 133.3333333333 decorations in all but, as an estimation is 130 decorations

8 0

3 years ago

Which of the following are geometric series?

Temka [501]

Answer:

-256 +64 - 16 + 4 - 1

Step-by-step explanation:

A series is the summation of all the terms in a sequence.

So it is only the last three options that qualify to be a series.

The series 2 +5 + 8 + 11 + 14 + 17 has no common ratio. It is not geometric.

The series 1+1+2+3+5+ 8 +13 +21 also has no common ratio. It is not geometric.

The series -256 +64 - 16 + 4 - 1 has a common ratio of

$r=\frac{64}{-256}=-\frac{1}{4}$

There the only series that is geometric is.

-256 +64 - 16 + 4 - 1

6 0

3 years ago

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