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DENIUS [597]
2 years ago
11

2 Points

Mathematics
1 answer:
Charra [1.4K]2 years ago
5 0

Answer:

D

Step-by-step explanation:

let y = x - 2 and rearrange making x the subject, that is

y = x - 2 ( add 2 to both sides )

y + 2 = x

now change x to f^{-1} (x) and y back to x, thus

f^{-1}(x) = x + 2 → D

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4. Simplify -6(3 – 5s + 12t – 2u)
Elan Coil [88]
-18 +30s -72t +12u is the answer
8 0
2 years ago
Find the surface area of the prism or pyramid. Round to the nearest hundredth if necessary.
son4ous [18]

Answer: 345.4

Step-by-step explanation:

SA=2πr^2+2πrh

SA=2(3.14)(5)^2+2(3.14)(5)(6)

SA=2(3.14)(25)+2(3.14)(30)

SA=2(78.5)+2(94.2)

SA=157+188.4

SA=345.4

4 0
3 years ago
What is the solution to the system of equations? Use any method. {y=−3x+1 {2x+5y=18
Softa [21]

Answer:

So the solution set of the equations are {(-1,4)}

or

the solution is x = -1 and y = 4

Step-by-step explanation:

Equations given to us are

y = -3x + 1                                ..................(i)

2x + 5y = 18                             .................(ii)

To find the value of x and y or the solution set of the system of equations

Now in first equation we see that

y = -3x + 1

Putting this value in equation (ii)

which is

2x + 5y = 18

Putting value of y from (i) in it

2x + 5(-3x + 1) = 18

Opening the bracket and multiplying inside

2x -15x + 5 = 18

-13 x + 5 = 18

Subtracting 5 from both sides of the equation

-13x + 5 - 5 = 18 -5

-13x = 13

Dividing both sides by -13

\frac{-13x}{-13}=\frac{13}{-13}

Cutting out the same values gives us

x = -1

For value of y

putting value of x in equation (i)

which is

y = -3x + 1

Putting the value

y = -3(-1)+1

y=3+1

y=4

So the solution set of the equations are {(-1,4)}

or

the solution is x = -1 and y = 4

4 0
3 years ago
Find the volume of the pyramid
podryga [215]

Answer:

88 cm^{3}

Step-by-step explanation:

Given 3 measurements 6,11,4

Assuming them to be length, width and height of pyramid

⇒

Length=  6 cm

Width= 11cm

Height= 4 cm

⇒

\text{Volume of a Pyramid}= \frac{Length \times Width \times Height}{3}

Therefore Volume of Given Pyramid

=\frac{6\times 11\times 4}{3} =\frac{264}{3} =88

⇒Volume of pyramid=88cm^{3}

6 0
3 years ago
Find the value of x in the triangle shown below
Yakvenalex [24]
Use the Pythagorean theorem to find X

A² + B² = C²

X² + 4² = 5²

X² = 5² - 4²

X² = 25 - 16

X² = 9

.: X = 3
3 0
3 years ago
Read 2 more answers
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