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charle [14.2K]
3 years ago
7

Write a number sentence to add 6 tens 21

Mathematics
2 answers:
Dahasolnce [82]3 years ago
8 0
6*10+21 IS the number sentence
vfiekz [6]3 years ago
3 0

Answer:

6 tens to 21 = 81

Step-by-step explanation:

Given

6 tens

21

To write a number sentence to represent the description in the question, follow these steps;

  • Convert 6 tens to number: From number representation, we know that tens can be replaced by 10;

So,

6 tens = 6 * 10

6 tens = 60

  • Then we add the result to 21

60 + 21

This gives a result of 81.

So, Addition of 6 tens to 21 is equal to 81

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Given right triangle A w/a hypotenuse length of 3y + x and a leg of y-x, and right triangle B, w/ a hypotense length of y+5 and
SpyIntel [72]
Triangle A

hypotenuse: 3y + x
leg: y - x

Triangle B

hypotenuse: y + 5
leg: x + 5

Congruency => 3y + x = y + 5 and y - x = x + 5

Solve the system

3y + x = y + 5 -> 2y + x = 5
y - x = x + 5 -> y - 2x = 5

  2y + x = 5
-2y + 4x = -10

5x = -5
x = -1
y = (5 -(-1)) / 2 = 6/2 = 3

Verify:

 hypotenuses
3y + x = 9 - 1 = 8
y + 5 = 3 + 5 = 8

Legs:

y - x = 3 -(-1) = 3 + 1 = 4
x + 5 = -1 + 5 = 4.

Then both hypotenuses and both legs are congruent.

Answer: x = -1 and y = 3


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3 years ago
How many times can 4 go into 724
Cerrena [4.2K]
 It can go in 181 times
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The constant in the expression 8x 3 + 4x 2 – 9 is
Ket [755]

Answer : 9

Step-by-step explanation:

The answer is 9 because a constant is a number on its own, or sometimes a letter such as a, b or c to stand for a fixed number.

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The points (–2, 4) and (–2, –2) are vertices of a heptagon. Explain how to find the length of the segment formed by these endpoi
Scrat [10]

Answer:

The segment is 6 units long.

Step-by-step explanation:

The points (–2, 4) and (–2, –2) are vertices of a heptagon. We have to explain how to find the length of the segment formed by these endpoints.

If two points at the ends of a straight line PQ are P(x_{1},y_{1}) and Q(x_{2},y_{2}), then the length of the segment PQ will be given by the formula  

\sqrt{(x_{1} - x_{2})^{2} + (y_{1} - y_{2})^{2}}

Now, in our case the two points are (-2,4) and (-2,-2) and the length of the segment will be  

\sqrt{(- 2 - (- 2))^{2} + (4 - (- 2))^{2}} = 6 units. (Answer)

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A car depreciates in value by 17% per year.
otez555 [7]

Answer:

17%of 23000

17/100×23000

1 yrs depreciation is 3910

then

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