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3 years ago

J(x)=3x+-1 find j(-2)

Mathematics

2 answers:

Svetlanka [38]3 years ago

6 0

Answer:

-7

Step-by-step explanation:

j(x)=3x+(-1)

j(x)=3x-1

j(-2)=3(-2)-1

j(-2)=-6-1

j(-2)=-7

bulgar [2K]3 years ago

4 0

Answer:

-7

Step-by-step explanation:

plug in -2 for x

(3)(-2) = -6

and then add the -1

= -7

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Please answer correctly !!!!!!!!!!!!!! I will mark Brianliest !!!!!!!!!!!!!!!!

sladkih [1.3K]

Answer:

Step-by-step explanation:

x+165 = 180

x = 180 - 165

x = 15

7 0

3 years ago

For questions 1 – 6, find the area of the circle to the nearest hundredth.<br> Any help appriciated!

Ganezh [65]

Step-by-step explanation:

The area of a circle is given by :

A = πr²

r is the radius of the circle

(4) Diameter = 22 cm

Since, radius = diameter/2

r = 11 cm

Now, area of the circle,

$A=\pi \times (11)^2\\\\A=380.13\ cm^2$

(5) Diameter = 30 cm

Since, radius = diameter/2

r = 15 cm

Now, area of the circle,

$A=\pi \times (15)^2\\\\A=706.85\ cm^2$

(6) Diameter = 4cm

Since, radius = diameter/2

r = 2 cm

Now, area of the circle,

$A=\pi \times (2)^2\\\\A=12.56\ cm^2$

So, the area of circles 4,5 and 6 are 380.13², 706.85² and 12.56² respectively.

4 0

3 years ago

The sum of three consecutive numbers is 72 what are the smallest of these numbers

Airida [17]

A + b + c = 72

a = b - 1

c = b + 1

(b - 1) + b + (b + 1) = 72

Simplify

3b = 72

b = 24

a = 24 - 1

a = 23

8 0

3 years ago

A public swimming pool that holds 45,000 gallons of water is going to be drained for maintenance at a rate of 100 gallons per mi

crimeas [40]

Answer:

450 minutes

Step-by-step explanation:

Given

w = 45000 - 100t

Required

Determine how long it'll take to empty the pool

Being empty means there's no water in the pool.

So, we have to set w to 0 to get the value of t

i.e w = 0

Substitute 0 for w in w = 45000 - 100t

0 = 45000 - 100t

Collect Like Terms

100t = 45000

Divide through by 100.

t = 450

Hence, it'll take 450 minutes to empty the pool

8 0

3 years ago

Kelly and Daniel wrote the following proofs to prove that vertical angles are congruent. Who is correct?

levacccp [35]

Daniel is correct, but Kelly is not

3 0

3 years ago

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