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fomenos
3 years ago
15

What is the value of h(−2) when h(x)=3x+1

Mathematics
2 answers:
adell [148]3 years ago
5 0

Replace x with -2 in the equation and solve.

3(-2) +1 = -6 + 1  = -5

worty [1.4K]3 years ago
3 0

Answer:

-5

Step-by-step explanation:

you input -2 anywhere there is an X than solve by orders of operations

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Find the dimensions of the rectangle with area 256 square inches that has minimum perimeter, and then find the minimum perimeter
mezya [45]

Answer:

Dimensions: A=a\cdot b=256

Perimiter: P=2a+2b

Minimum perimeter: [16,16]

Step-by-step explanation:

This is a problem of optimization with constraints.

We can define the rectangle with two sides of size "a" and two sides of size "b".

The area of the rectangle can be defined then as:

A=a\cdot b=256

This is the constraint.

To simplify and as we have only one constraint and two variables, we can express a in function of b as:

b=\frac{256}{a}

The function we want to optimize is the diameter.

We can express the diameter as:

P=2a+2b=2a+2*\frac{256}{a}

To optimize we can derive the function and equal to zero.

dP/da=2+2\cdot (-1)\cdot\frac{256}{a^2}=0\\\\\frac{512}{a^2}=2\\\\a=\sqrt{512/2}= \sqrt {256} =16\\\\b=256/a=256/16=16

The minimum perimiter happens when both sides are of size 16 (a square).

4 0
3 years ago
Will give brainliest if you get this right!
SSSSS [86.1K]

The answer is x=6. I double checked the work and am 100% sure thats the answer

7 0
3 years ago
Read 2 more answers
Someone help me asap?
laila [671]
4) 8n
5) x=27
6) 2n=22
7)5
6 0
3 years ago
Sara had 97 dollars to spend on 6 books. After
nalin [4]
The answer is 19 6×13 It’s 78-97 you get 19
5 0
3 years ago
Help please. Im confused on what to do.
Paraphin [41]

Answer:

add up all the sides!!

6+3+3+3+5+12+4+6=38

so the perimeter is 38 ft

4 0
3 years ago
Read 2 more answers
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