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3 years ago

2 1/2 +2/3 Thank you!

Mathematics

1 answer:

MArishka [77]3 years ago

6 0

Answer:

3 1/6

Step-by-step explanation:

2 1/2 + 2/3 = 2 3/6 + 4/6. add 3 and 4, you get 2 7/6. simplify by taking 6 from 7 and add 1 to 2. that leaves you with the answer

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I tried and now i need help

Svetradugi [14.3K]

I'm guessing the answer is B? I tried to isolate r and I got that result. Sorry if it's wrong!

3 0

3 years ago

Simplify the scalar multiplication on the matrix.

Romashka-Z-Leto [24]

Answer:

third option

Step-by-step explanation:

Given

3 $\left[\begin{array}{ccc}-2&5\\1&0\\\end{array}\right]$

Multiply each element in the matrix by 3

= $\left[\begin{array}{ccc}3(-2)&3(5)\\3(1)&3(0)\\\end{array}\right]$

= $\left[\begin{array}{ccc}-6&15\\3&0\\\end{array}\right]$

7 0

3 years ago

What is the value of the expression shown below 10+(2x3)^2 divided by 4x (1/2)^3

stira [4]

Answer:

10 + (2 x 3)^2 / 4 x (1/2) ^3

First do the parentheses

2 x 3 = 6

1 / 2 = 0.5

We are left with

10 + 6^2 /4 x 0.5^3

Do exponents

6 x 6 = 36

0.5 x 0.5 x 0.5 = 0.125

10 + 36 / 4 x 0.125

Divide by 4 and multiply by 0.125

36 / 4 = 9

9 x 0.125 = 1.125

We are left with

10 + 1.125 = 11.125

The answer is 11.125

Step-by-step explanation:

7 0

3 years ago

The length of a rectangle is three inches more than the width. the area of the rectangle is 180 inches. find the width of the re

ch4aika [34]

We have a rectangle with length L that is 3 inches more than the width W. Then we can write this as:

$L=W+3$

The area of the rectangle is 180 square inches.

We have to find the width W.

As the area is equal to the product of the length and the width, we can write this equation and solve for W as:

$\begin{gathered} A=180 \\ L\cdot W=180 \\ (W+3)\cdot W=180 \\ W^2+3W=180 \\ W^2+3W-180=0 \end{gathered}$

We have a quadratic equation. The roots of this equation will be the mathematical solutions.

We can find the roots using the quadratic formula:

$\begin{gathered} W=\frac{-b\pm\sqrt[]{b^2-4ac}}{2a} \\ W=\frac{-3\pm\sqrt[]{3^2-4\cdot1\cdot(-180)}}{2\cdot1} \\ W=\frac{-3\pm\sqrt[]{9+720}}{2} \\ W=\frac{-3\pm\sqrt[]{729}}{2} \\ W=\frac{-3\pm27}{2} \\ W_1=\frac{-3-27}{2}=-\frac{30}{2}=-15 \\ W_2=\frac{-3+27}{2}=\frac{24}{2}=12 \end{gathered}$

The solutions are W = -15 and W = 12.

The first one is not valid, as W has to be greater than 0.

Then, the solution to our problem is W = 12 in.

Answer: the width is W = 12 inches.

6 0

1 year ago

What is -1/9 written as a decimal?

Vilka [71]

Using division, you will find that -1/9 continues on and on forever with no end, so you can mark this by drawing a line over the last repeating number

4 0

3 years ago

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