Ask question

Ask question

All categories

3 years ago

11

Nel

1 answer:

dusya [7]3 years ago

8 0

Answer:

can you rewrite that pls I can't understand

You might be interested in

What are the solution of the equation 2|×+7|-3=5

marin [14]

Answer:

x = -3

Step-by-step explanation:

2(x + 7) - 3 = 5 (given)

2x + 14 - 3 = 5 (Distributive Property)

2x + 14 = 8 (Addition Property of Equality)

2x = -6 (Subtraction Property of Equality)

x = -3 (Division Property of Equality)

6 0

3 years ago

Can someone please help me solve this? and explain how you got the answer? Thank you

Tatiana [17]

36.9
it might be wrong but at least i tried

5 0

3 years ago

The sum of the digits of a 2-digit number is 10. If 18 is added to the number, the digits of the new number are those of the ori

Aliun [14]

Answer:

46

Step-by-step explanation:

Let $(ab)$ represent a number with $a$ in the ten's position and $b$ is the one's position.

This means $(ab)$ actually has value of $10a+b$ .

We are given the sum of those digits of $(ab)$ is 10; this means $a+b=10$ .

It says if 18 is added to the number $(ab)$ , then the result is $(ba)$ .

So $(ab)$ has value $10a+b$ and

$(ba)$ has value $10b+a$ .

We are given then:

$(ab)+18=(ba)$

$10a+b+18=10b+a$

Subtract $10a$ on both sides:

$b+18=10b+a-10a$

Simplify:

$b+18=10b-9a$

Subtract $b$ on both sides:

$18=10b-b-9a$

$18=9b-9a$

Divide both sides by 9:

$2=b-a$

Rearrange by commutative property:

$2=-a+b$

So the system of equations we want to solve is:

$a+b=10$

$-a+b=2$

-------------------------Add equations together (this will eliminate the variable $a$ and allow you to go ahead and solve for $b$ :

$0+2b=12$

$2b=12$

Divide both sides by 2:

$b=\frac{12}{2}$

Simplify:

$b=6$

If $b=6$ and $a+b=10$ , then $a=4$ . $a=4$ since 4+6=10.

So the original number is (46).

18 more than 46 is 18+46=(64) which is what we wanted.

We also have the sum of 4 and 6 is 10 as well.

7 0

4 years ago

find the interest earned on an account with $450 principal, and interest rate of 6% over a period of 8 years

puteri [66]

8
450(1+.06) = 717.23

4 0

3 years ago

if A= (-1, -3) and B= (11, -8) what is the length of AB A) 14 units B) 11 units C) 13 units D) 12 units

Anastasy [175]

Distance is the formula :

D $AB$ = $\sqrt{(xA - xB)^2 + (yA - yB)^2}$

so

$\sqrt{(-1 - 11)^2 + (-3 + 8)^2}$

= 13

Answer is C)

5 0

3 years ago