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4 years ago

Help me fast please

Mathematics

1 answer:

solniwko [45]4 years ago

4 0

A7= 5(7)+3
A7=35+3
A7=38

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When this 3-digit number is rounded to the nearest ten or hundred, the numbers round up. All of the digits in this number are t

Serjik [45]

I don't need to know anything about all that rounding stuff.

You said that there are 3 digits, they are all the same, and their sum is 15.

So each of them must be ( 15 / 3 ) = 5 .

The number is <em>555</em> .

5 0

4 years ago

Can someone help me please.... with number 6,7,8,9

Alenkasestr [34]

Answer :

6. x=28

7.x =6

8. x =9

9. x =9

Step-by-step explanation:

$\frac{x + 2}{10} = 3$

$x + 2 = 3 \times 10 \\ x + 2 = 30 \\ x = 30 - 2 \\ x = 28$

(x+2)/10 = 3

Cross multiply

x+2 = 10 ×3

x+2 =30

Collect like terms and simplify

x =30-2

x = 28

$8x + 9 - 5x = 27 \\ 8x - 5x = 27 - 9 \\ 3x = 18$

$\frac{3x}{3} = \frac{18}{3} \\x = 6$

8x +9 -5x= 27

Collect like terms and simplify

8x-5x =27-9

3x =18

Divide both sides of the equation by 3

3x/3 = 18/3

x = 6

10x+8=8x+26

Collect like terms

10x-8x=26-8

2x = 18

Divide both sides of the equation by 2

2x/2 = 18/2

x = 9

2(x-5)+4x=x+35

Use 2 to open the bracket

2 × x =2x

2×(-5) =-10

2x-10+4x =x+35

Collect like terms and simplify

2x+4x-x = 35+10

5x = 45

Divide both sides of the equation by 5

5x/5 = 45/5

x =9

7 0

4 years ago

Dear Reader,

MAXImum [283]

If its the capital letters:
TEIEDIII
i dont really think thats right tho :/

5 0

3 years ago

Solve<br>f(x)=2x^2+6, fund the value if f(x+3)

zavuch27 [327]

Answer:

F=2x^2+24

Step-by-step explanation:

F (x+3)=2x^2+6

F=2(x+3)^2+6

F=2(X^2+9)+6

F=2x^2+18+6

F=2x^2+24

6 0

3 years ago

Both Dominic and Zoe are 4 feet 6 inches tall. What is their combined height in inches?

Dafna11 [192]

Answer:

Their combined height is 108 inches

Step-by-step explanation:

1 ft = 12 inches

12 * 4 = 48 inches

48 + 6 = 54 inches

54 * 2 = 108 inches

7 0

3 years ago

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