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3 years ago

How do you do this help me and Explain how I will give you Brainless

Mathematics

2 answers:

Darina [25.2K]3 years ago

7 0

Answer:

Simplify 15 by dividing it by 3, and then shade 2/3rds of the simplified sections. This should come out to 3 sections of five, so shade in 10 out of the 15 sections

Alex3 years ago

5 0

The easiest way to understand this question is to give both fractions the same denominator. Only one fraction? Nope, it says the pie is split into 15 pieces, making 15 and 3 the denominators. As for the numerators, the question has given you only one, and is asking for the numerators above 15 (aka, the number of pieces you need colour).

With this in mind, all you need to do is set up a ratio:

2/3 = ?/15

Well how do you get 3 x ? = 15? Rearrange the equation to 15/3 = 5

So now we know to times the demonimator by 5 to get 15, and to keep the ratio the same we must do the exact same thing to the numerator.

2 x 5 = 10

That leaves us with 2/3 = 10/15

Therefore, you should colour 10 pieces.

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The 13-foot string is arranged into a rectangle. Let L denote the length of the rectangle,

soldi70 [24.7K]

The expressions for the width, W, and area, A, of the rectangle in terms of L are:

W = $\frac{13}{2}$ - L
A = $\frac{13L - L^{2} }{2}$

The expression for the perimeter of a rectangle is given as:

P = 2(L + W)

where L is its length and W its width

a. Given that the perimeter of the rectangle is 13 feet, then;

13 = 2(L + W)

divide through by 2

$\frac{13}{2}$ = L + W

So that;

W = $\frac{13}{2}$ - L

The required formula for the width as a function of L is: W = $\frac{13}{2}$ - L

b. Area of a rectangle can be expressed as;

A = L * W

substitute the expression for width in that of area to have

A = L * ( $\frac{13}{2}$ - L)

= $\frac{13}{2}$ L - $L^{2}$

A = $\frac{13L - L^{2} }{2}$

The expression for the area A is: A = $\frac{13L - L^{2} }{2}$

Visit: brainly.com/question/10452031

5 0

2 years ago

Reuben says, "two days ago i was 20 years old. later next year, i will be 23 years old." how is this possible?

Aneli [31]

Let us always base on the present age. We denote this by x. Now, the age he had 2 years ago would then be denoted as (x-2). Let's equate this to 20 years old.

x - 2 = 20
x = 20 + 2
x = 22 years old
He should be 22 years old now.

Let's check the other condition. After 1 year, his age should be (x+1). Let's equate this to 23 years old.

x + 1 = 23
x = 23 - 1
x = 22

Thus, this is possible if Reuben is 22 years old as of the present.

7 0

3 years ago

NEED HELP ASAP 2 questions WORTH 50

ch4aika [34]

Answer:

The first question tan(24) = x/12 because tan(x) = opposite/adjacent

so x in radians ≈ -25.618....

x in degrees ≈ 5.342....

For the second question tan(72) = x/20

x in radians ≈ -5.248....

x in degrees ≈ 61.553....

3 0

3 years ago

Read 2 more answers

Solve: 2x > 18 <br> x < 9<br> x > 9<br> x > 36<br> x < 36

forsale [732]

Answer:

the answer is X > 9

Step-by-step explanation:

you divide move the 2 to the other side and divide by 18

8 0

3 years ago

How to divide polynomials

Bess [88]

Answer:

Step 1: Set up the synthetic division. ...

Step 2: Bring down the leading coefficient to the bottom row.

Step 3: Multiply c by the value just written on the bottom row. ...

Step 4: Add the column created in step 3.

Step-by-step explanation:

In algebra, polynomial long division is an algorithm for dividing a polynomial by another polynomial of the same or lower degree, a generalised version of the familiar arithmetic technique called long division. ... The result R = 0 occurs if and only if the polynomial A has B as a factor.

3 0

3 years ago