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4 years ago

Factor 2x2 - 11x - 21.

Mathematics

2 answers:

dangina [55]4 years ago

7 0

The answer is A, (2x+3)(x-7)

algol [13]4 years ago

7 0

The answer is A...........

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Mrac [35]

Answer:

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Step-by-step explanation:

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3 years ago

Read 2 more answers

5. How much should Chantal budget per month to make sure she has enough

solmaris [256]

Answer:

$525.13

Step-by-step explanation:

cost per month = total expenses / months in a year

total expenses = fixed cost + variable cost

$2,125.10 + $4,176.43 = $6,301.53

cost per month = $6,301.53/ 12 = $525.13

4 0

3 years ago

10 is 40 percent of what number?

pychu [463]

The answer should be 25

3 0

4 years ago

Pls help I don’t understand this!

Alborosie

Answer:C

Step-by-step explanation:

5 0

3 years ago

A sector of a circle makes a 127° angle at its centre. If the arc of the sector has length 36 mm, find

Veseljchak [2.6K]

Answer:

Approximately $68.5\; \rm mm$ .

Step-by-step explanation:

Convert the angle of this sector to radians:

$\begin{aligned}\theta &= 127^{\circ} \\ &= 127^{\circ} \times \frac{2\pi}{360^{\circ}} \\ &\approx 2.22\end{aligned}$ .

The formula $s = r\, \theta$ relates the arc length $s$ of a sector of angle $\theta$ (in radians) to the radius $r$ of this sector.

In this question, it is given that the arc length of this sector is $s = 36\; \rm mm$ . It was found that $\theta = 2.22$ radians. Rearrange the equation $s = r\, \theta$ to find the radius $r$ of this sector:

$\begin{aligned} r&= \frac{s}{\theta} \\ &\approx \frac{36\; \rm mm}{2.22} \\ &\approx 16.2\; \rm mm\end{aligned}$ .

The perimeter of this sector would be:

$\begin{aligned}& 2\, r + s \\ =\; & 2 \times 16.2\; {\rm mm} + 36\; {\rm mm} \\ =\; & 68.5\; \rm mm\end{aligned}$ .

8 0

3 years ago