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3 years ago

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The units digit of a two-digit number is four more than the tens digit. If the number is doubled, it will be one more than the r

eversed number. Find the number. (Number: 32 Reversed number: 23)

2 answers:

Anestetic [448]3 years ago

7 0

Answer:

37

Step-by-step explanation:

2-digit number: 10x + y

y = x + 4

20x + 2y = 10y + x + 1

8y = 19x - 1

8x + 32 = 19x - 1

11x = 33

x = 3

Number: 37

Inessa [10]3 years ago

4 0

Answer:

Answer:

37

Step-by-step explanation:

2-digit number: 10x + y

y = x + 4

20x + 2y = 10y + x + 1

8y = 19x - 1

8x + 32 = 19x - 1

11x = 33

x = 3

Number: 37

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A=5b+8<br> Rearrange to make subject

Mumz [18]

AnswThe method is to separate the variable from everything else. That means getting the variable on one side of the equals sign and everything else on the other side. A=5B+8.

Subtract 8 from each side: A-8=5B.

Now divide each side by 5: (A-8)/5=B.

So B=(A-8)/5.

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Step-by-step explanation:

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3 years ago

The sum of 3 times a number and 6b=2

boyakko [2]

3x+(1/3)

Step-by-step explanation:

because 6b=2 you divide both sides by 6 and get 2/6 which can simplify to 1/3 =b

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3 years ago

Evaluate the expression 15x plus 4 for x equals -1 1/2

Angelina_Jolie [31]

Answer:

- $\frac{11}{30}$

Step-by-step explanation:

15x + 4 = -1 $\frac{1}{2}$

15x = -5 $\frac{1}{2}$

x = - $\frac{11}{2}$ × $\frac{1}{15}$

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3 years ago

isabella Went hiking she climbed park way up a mountain and stopped to have lunch then she climbed down. which graph could rep

Natali5045456 [20]

Answer:

Step-by-step explanation:

The speed one (c) is a red herring. Nothing we can see measures her speed.

The only graph that could possibly represent the right answer is D (first graph from the right). It shows that she topped 1/2 way up. It also shows that she took her time about coming down when she was at the top.

The only thing we don't know is A. What's on the vertical axis?

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3 years ago

Which parent functions have an intercept at (0,0)Choose all that are correct.

inessss [21]

Answer:

Linear, Quadratic, Radical, Absolute Value, Cubic, Cube Root

Step-by-step explanation:

To find:

Which functions have an intercept at (0, 0).

That means, when we put a value $x=0$ in the $y =f(x)$ , value of $y=0$ .

Let us discuss each <em>parent</em> function one by one:

1. Linear:

$y = x$

When we put x = 0, y = 0

Therefore, it has intercept at (0, 0).

2. Quadratic:

$y = x^2$

When we put x = 0, y = 0

Therefore, it has intercept at (0, 0).

3. Radical:

$y = \sqrt x$

When we put x = 0, y = 0

Therefore, it has intercept at (0, 0).

4. Absolute Value:

$y = |x|$

When we put x = 0, y = 0

Therefore, it has intercept at (0, 0).

5. Rational:

$y = \dfrac{1}{x}$

When we put $x = 0\Rightarrow y \rightarrow \infty$

Therefore, it does not have intercept at (0, 0).

6. Exponential:

$y = b^x$

b is any base

When we put $x = 0\Rightarrow y =1$

Therefore, it does not have intercept at (0, 0).

7. Logarithmic:

$y = logx$

When we put $x = 0 \Rightarrow y\rightarrow$ Not defined

Therefore, it does not have intercept at (0, 0).

8. Cubic:

$y = x^3$

When we put $x = 0\Rightarrow y =0$

Therefore, it has intercept at (0, 0).

9. Cube Root:

$y = \sqrt[3]x$

When we put $x = 0\Rightarrow y =0$

Therefore, it has intercept at (0, 0).

3 0

3 years ago