Evaluate the function below given f(2) f(x)=3x-10

Mathematics

1 answer:

borishaifa [10]3 years ago

3 0

Answer:

f(2) = -4

Step-by-step explanation:

for f(2), plug it into f(x)=3x-10

3(2)-10

6-10

-4

f(2) = -4

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The length L of a rectangle is 4 units more than its width W. The rectangle's are is 252 square units. A) Write the equation tha

jek_recluse [69]

Answer:

w=14

l=18

Step-by-step explanation:

To find the dimensions, create an equation for its area and solve for each using the area formula A = l*w. The dimensions given are A = 252, w for width and l= w+4 (4 more than the width).

$A = l*w\\252 = (w+4)*w\\252 = w^2+4w\\252+4 = w^2 +4w +4\\256 = (w+2)^2\\\sqrt{256} =\sqrt{(w+2)^2} \\16 = w+2\\16 = w+2\\14= w\\$

The width is 14 so the length is l=w+4 or l= (14)+4 =18

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2 years ago

Simplify the expression. Show your work. 22 + (32 – 4 2 )

Alex Ar [27]

You have to use PEMDAS:

Parentheses
Exponents
Multiplication
Division
Addition
Subtraction

First, do parentheses.

32 - 42 = -10

22 + -10 = 12

Answer = 12

Hope this helped
Have a great day :)

8 0

2 years ago

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lesantik [10]

Answer:

261

Step-by-step explanation:

I took each number and divided each of them by 9 until I got a whole number with no decimals.

261 ÷ 9 = 29

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2 years ago

What is the measure of angle z in this figure?

astraxan [27]

Hello!

I've attached a photo for reference.

Lines A and B form straight angles, which measure 180 degrees. That means that -

m∠x + m∠y = 180°
m∠y + m∠z = 180°
m∠z + 43° = 180°
43° + m∠x = 180°

Since you're trying to find z, use the solvable equation with z in it:

m∠z + 43° = 180°
180 = z + 43
137 = z

Answer:
m∠z = 137°