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4 years ago

What’s the answer???

Mathematics

2 answers:

RUDIKE [14]4 years ago

6 0

-6 hope this helps..............................

snow_lady [41]4 years ago

4 0

- 6

substitute x = - 1 into f(x)

f( - 1) = $\frac{12}{(4.( -1) +2)}$ = $\frac{12}{-2}$ = - 6

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Find the sum of: (2×3 - 7×2+ 10× - 8) ÷ (× - 2) with step by step explanation

jonny [76]

Answer:

-8±10x

Step-by-step explanation:

you will follow BODMAS

B=bracket

O= off

D=division

M=multiplication

A=addition

S=subtraction

2×3=6

7×2=14

[6-14±10x-8]÷[x-2]

14±8=22

6-22=-16

[-16±10x]÷[x-2]=-8±10x

4 0

3 years ago

Find the area of a regular polygon

Law Incorporation [45]

Answer: Area of the polygon is 43.31 cm^2 t

Step-by-step explanation:

The polygon show in the diagram is a hexagon. It has six sides, since it is a regular hexagon, all the six sides are equal.

From the information given, the apotherm = 5√3

The apotherm is the perpendicular distance from the center of one side of the polygon to the center of the polygon. To determine the area of the polygon,

Area of polygon

=area = a^2n ×tan 180/n

Area = (5√3)^2 tan(180/6)

Area = 5^2×(√3)^2 × tan30

Area = 25×3×0.5774

Area = 43.305

Approximately 43.31 cm^2 to the nearest tenth

7 0

3 years ago

Write the equation of a line in point-slope form whose slope is 7 and passes through the point (7, -2).

horrorfan [7]

Answer:

Step-by-step explanation:

m=7

So by using point slope form

y-y1=m(x-x1)

y-(-2)=7(x-7)

y+2=7x-49

y-7x+51=0

6 0

3 years ago

What are the roots of the equation x 2-10x+21=0

horrorfan [7]

So factoring this would be:
(x-7)(x-3)
so the solution set is
{7, 3}
I'm not sure if this is what you were asking, if it wasn't, I'll edit it.

3 0

4 years ago

ace bike rentals rents bikes for $28 per day. Renters can keep the bike for 8 hours. Bart's bikes rents bikes for $30 per day. R

lyudmila [28]

Bart company charges a lower rate. It is lower by rate $ 0.5 per hour

<h3>Solution:</h3>

Given that Ace bike rentals rents bikes for $28 per day. Renters can keep the bike for 8 hours

Also given that Bart's bikes rents bikes for $30 per day. Renters can keep the bike for 10 hours

To find: company that charges lower rate

Let us find the hourly rate of Ace and Bart

$\text {hourly rate }=\frac{\text { Rental price }}{\text { total time in a day }}$

Hourly rate of Ace company:

Rental price = $28

total time in a day 8 hours

$\text {hourly rate }=\frac{28}{8}=3.5$

So the hourly rate of Ace company is $ 3.5 per hour

Hourly rate of Bart company:

Rental price = $ 30

total time in a day 10 hours

$\text {hourly rate }=\frac{30}{10}=3$

So the hourly rate of Bart company is $ 3 per hour

Comparing hourly rate of both companies

Ace company is $ 3.5 per hour

Bart company is $ 3 per hour

Bart company < Ace company

3 < 3.5

Thus bart company charges a lower rate

<h3>How much lower?</h3>

hourly rate of Ace company - hourly rate of Bart company = 3.5 - 3 = 0.5

So, it is lower by rate $0.5 per hour

6 0

3 years ago