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Elis [28]
3 years ago
14

The sum of the digits of a three-digit number is 6. The hundreds digit is twice the units digit, and the tens digit equals to th

e sum of the other two. Find the number.
Mathematics
1 answer:
wlad13 [49]3 years ago
6 0

Answer:

231

Step-by-step explanation:

231

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Simplify: 0.9(2b-1)-0.5b+1
Nutka1998 [239]

Answer:

Step-by-step explanation:

0.9*2b = 1.8b

0.9*-1 = -0.9

So far we have 1.8b-0.9. It can't be simplified further.

Then, we add the 2nd part, -0.5b+1.

We have:

1.8b-0.9-0.5b+1. Next we combine like terms.

1.8b-0.5b = 1.3b.

-0.9+1 = 0.1

Then we put it together.

1.3b+0.1 is our answer.

Hope this helped! Have a nice day :D

5 0
3 years ago
Read 2 more answers
The answer is correct? If it’s wrong please explain me how to solve it :’)
cricket20 [7]

Answer:

48

Step-by-step explanation:

x = -2 y =3

3x² - 2xy²

3(-2)² -2(-2)(3)²

square first

3*4 -2(-2)*9

multiplty from left to right

12-2(-2)*9

multiply from left to right again

12 -(-36) subtract using rule for integers that double minus is plus

12 + 36

48

7 0
3 years ago
For the right triangles below, find the exact values of the side lengths a and c. If necessary, write your responses in simplifi
alex41 [277]

Answer:

First triangle: a = 5\sqrt{2}, second triangle: c = \frac{8\sqrt{3}}{3}

Step-by-step explanation:

In the first triangle, the value of a is equal to the following trigonometric relation:

a = \frac{5}{\cos 45^{\circ}}

a = \frac{5}{\frac{\sqrt{2}}{2} }

a = \frac{10}{\sqrt{2}}

a = \frac{10\sqrt{2}}{2}

a = 5\sqrt{2}

In the second triangle, we obtain the value of c is equal to the following trigonometric relation:

c = 8\cdot \tan 30^{\circ}

c = 8 \cdot \left(\frac{\sin 30^{\circ}}{\cos 30^{\circ}} \right)

c = 8\cdot \left(\frac{\frac{1}{2} }{\frac{\sqrt{3}}{2} } \right)

c = \frac{8}{\sqrt{3}}

c = \frac{8\sqrt{3}}{3}

8 0
3 years ago
Write a number sentence that tells what the model represents
nataly862011 [7]
Can you say more details
3 0
3 years ago
Read 2 more answers
What is the answer to 35-4xless than 2
Taya2010 [7]
You first need to get x on one side, so you first subtract 35 from both sides, and you get
-4x < 2
then you divide by -4 on both sides, so you get
x < -0.5
(i hope this is correct)
6 0
3 years ago
Read 2 more answers
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