MATHEMATICS HIGH SCHOOL

Is 21,28,35 a right triangle?

I will mark the CORRECT answer Brainiest.

Answers

Answer 1

Answer:

Answer:

Yes

Step-by-step explanation:

If the sides match Pythagoras' Theorem, the triangle is a right triangle.

$21^(2) +28^(2)$

= $441+784$

= $1225$

= $35^(2)$

Answer 2

Answer:

Answer:

Yes

Step-by-step explanation:

Criteria for finding a right triangle is that sum of square of two sides = square of the third side.

Let the sides be A, B and C.

( i.e )

A² + B² = C²

So,

Let,

A = 21

B = 28

C = 35

21² + 28² = 35²

441 + 784 = 1225

1225 = 1225

Hence,

Sides 21, 28, and 35 will form a right triangle.

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What is the distance between point A and point B? A number line ranging from negative 8 to 8 with point A at coordinate negative 6 and point B at coordinate 7 Enter your answer in the box. The distance between points A and B on the number line is units. help please unit # 1 question 10 PLZZZZZ !!!!
HONESTLY help me I don’t understand math

293 ÷ 42
≈ 280 ÷ 40
=____

Answers

I really don't know what you are asking for but 280/40 is 7.

Answer:

Step-by-step explanation:

Find three consecutive ODD integers such that the sum of 7 times the smallest and twice the largest is -91. Name the smallest integer..

Answers

Answer:

-11, -9, -7

the smallest: 2x+1 = -11

Step-by-step explanation:

{z - some integer}

2z+1 - the smallest number

7(2z+1) - seven times the smallest number

2z+1+2=2z+3 - the middle number

2z+3+2 = 2z+5 - the largest number

2(2z+5) - twice the largest number

7(2z+1) + 2(2z+5) - the sum of 7 times the smallest and twice the largest

7(2z+1) + 2(2z+5) = -91

14z + 7 + 4z + 10 = -91

-17 -17

18z = -108

÷18 ÷18

z = -6

2z+1 = 2(-6)+1 = -12 + 1 = -11

2z+3 = 2(-6)+3 = -12 + 3 = -9

2z+5 = 2(-6)+5 = -12 + 5 = -7

Final answer:

To solve this problem, we denote the smallest odd integer as 'x' and set up the equation 7x + 2(x+4) = -91. By solving this equation, we find that the smallest integer is -15.

Explanation:

To find the three consecutive odd integers, let us denote the smallest odd integer as x; therefore, the next two consecutive odd integers would be x + 2 and x + 4, respectively. The problem states that the sum of seven times the smallest integer and twice the largest integer equals to -91. So, we can translate this into the equation, 7x + 2(x+4) = -91. Solving this gives us x = -15. Hence the smallest integer is -15. The full solution is as follows:

Let the smallest integer be x.
Then the other two consecutive odd numbers are x + 2 and x + 4.
According to the question, 7x + 2(x + 4) = -91.
Solving for x, we get x = -15.
Hence, the smallest odd integer sought is -15.

Learn more about Consecutive Odd Integers here:

brainly.com/question/32448319

#SPJ3

Need help asap will mark brainliest

Answers

Answer:

1725 ft²

Step-by-step explanation:

$(50+65)/(2) *30$ = $(115)/(2) *30= 57.5*30 = 1725$

Answer:

1,950 ft

Step-by-step explanation:

it is a compound shape, thus it is made up of a square and a triangle

you can find the area of the square by 30 x 50 and the area of the triangle by 30 as the height and 65 - 50 as the base, and when you add it together you get 1,950

According to the textbook, the median age in the United States is closest to 13. 23. 35. 49.

Answers

I can't find the answer tonight. I accidentally left my textbook in school.

How do you graph f(x)=5x-45

Answers

The y intercept is -45 and 5 is the slope.

You gonna start you graph

-10 until you reach possitve 9

9 is in the middle between 8 and 10

-10 is in your left side and 9 is on the other side

I hope that's help ! If you questions about the graph please let me know

Robert stands atop a 1,380-foot hill. He climbs down, reaching the bottom of the hill in 30 minutes. What is Robert’s average rate of elevation change in feet per minute?+460
+46
-46
-460

Answers

Before we calculate we can use some common sence thinknig to narrow down the choices. We know that Robert is gonig DOWN the hill, so it doesnt make sence that he woudl have a positive rate of change (i.e. the number feet up the hill he is is decreasing, not increasing) So right away, A & B are clearly wrong.

If we look at the last two (C & D) we can see that if -460 were right after 10 minutes he would have walked down 4,600 feet. This is WAY more that the total height of the hill and so can't be correct.

So C must be correct.

We can check this with some simple math:
$rate = (end-start)/(time) = (0ft-1380ft)/(30mins)= -46(ft)/(min)$