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2 years ago

The diagram shows a sector of a circle of radius 4 cm. work out the length of the arc abc

Mathematics

1 answer:

Zielflug [23.3K]2 years ago

3 0

Need to know the angle for this I think?

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write the interval shown on the number line as an inequality, using set notation, and using interval notation

evablogger [386]

Answer:

The answer in the explanation

Step-by-step explanation:

The solution of the inequality is all real numbers greater than or equal to 5

The solution using interval notation is ------> [5,∞)

and

The solution using set notation is {x ∈ R | x ≥ 5}

4 0

3 years ago

The circumference of a circular rug is 24.8 meters. What is the area of the rug? Use 3.1 for pi

mestny [16]

Answer:

The area of rug is 48.9 m^2

Step-by-step explanation:

Let's assume radius of rug is r m

we know formula for circumference as

$C=2\pi r$

we are given

C=24.8

and then we can solve for r

$24.8=2\pi r$

$r=3.947$

now, we can use area formula

$A=\pi r^2$

we can plug r

and we get

$A=\pi (3.947)^2$

$A=48.94227$

So,

The area of rug is 48.9 m^2

4 0

2 years ago

Determine if (x+1) is a factor 4x^2 + 2x - 5Use synthetic division

ikadub [295]

Given

$4x^2+2x-5$

Divide it by (x+1) using synthetic division, as shown below

The green line is a minus sign.

Thus,

$\Rightarrow4x^2+2x-5=(x+1)(4x-2)-3$

Therefore, since the remainder is different than zero, (x+1) is not a factor of 4x^2+2x-5

6 0

1 year ago

What is the standard form of x/4 - y/3 =1 and 5/x - 2/y=7.

kompoz [17]

You can multiply both sides by a number that will get rid of the denominators. For ex. you can multiply the first equation by 12 because 4 and 3 both go into 12 evenly. MAKE SURE YOU MULTIPLY THE OTHER SIDE BY 12 AS WELL! Therefore, 12(x/4) - 12(y/3) = 12(1), or 3x - 4y = 12

5 0

3 years ago

A frozen dinner at the grocery store is purchased for $2.20 a wholesale and is a marked up for 40 percent. a customer wants to b

iren [92.7K]

First of all, you surely do have a lot of incorrect grammar in your statement. I can't understand a word that you are asking.

3 0

3 years ago