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jasenka [17]
3 years ago
13

Please please please help me!!!Both questions answer!

Mathematics
1 answer:
choli [55]3 years ago
3 0

Answer:

#43: D

#44: 11

Step-by-step explanation:

#43-

1. 2x + 4 =K= 2x+22

place function together

2. combine like terms

2x+4=k=2x+22

-2x -2x

4=K= 22

-4 -4

3. gives you the answer

which is K = 18

#44 f(x) = 2/3x + 3 .....f(12)

1. place 12 un the equation

f(12) = 2/3 × 12 +3

2. f(12) = 8+3

3. f(12)= 11

This is the best I can do

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2a ⁵ + 5 but a = 5<br> step by step please:D
Sav [38]

Answer:

Step-by-step explanation:

Alright so we are going to be Evaluating on this Equation

So We Substitute for A=5

2a⁵+5

2(5⁵)+5

Step 2

2(5⁵)+5 Simplify

2(3125)+5

6250+5

6255

Your answer would be 6255

5 0
3 years ago
A rectangular tank with a square​ base, an open​ top, and a volume of 10,976 ft cubed is to be constructed of sheet steel. Find
Marizza181 [45]

Answer:

Dimensions to minimize surface are is 28 ft x 28 ft x 14 ft

Step-by-step explanation:

The Volume of a box with a square base of say;x cm by x cm and height

h cm is;

V = x²h

Now, the amount of material used is directly proportional to the surface area, hence we will minimize the amount of material by minimizing the surface area.

The formula for the surface area of the box described is given by;

A = x² + 4xh

However, we need A as a function of

only x, so we'll use the formula;

V = x²h

V = x²h = 10,976 ft³

So,

h = 10976/x²

So,

A = x² + 4x(10976/x²)

A = x² + 43904/x

So, to minimize the area, it will be at dA/dx = 0.

So,

dA/dx = 2x - 43904/x² = 0

Factorizing out, we have;

2x³ = 43904

x³ = 43904/2

x³ = 21952

x = ∛21952

x = 28 ft

since, h = 10976/x²

h = 10976/28² = 14 ft

Thus,dimension to minimize surface are is 28 ft x 28 ft x 14 ft

7 0
4 years ago
Adding fractions 1/6+2/3=
mars1129 [50]

Answer:

\frac{5}{6}

\frac{1}{6} + \frac{2}{3} is equivalent to \frac{1}{6} + \frac{4}{6}.

This is because \frac{2}{3}=\frac{4}{6}

The rule is, in order to add fractions, your denominators must be equivalent. In other words, you must have the same denominator for both fractions.

<em>Now what do we do? We add!</em>

\frac{1}{6} + \frac{4}{6} =\frac{5}{6}

This is because 4 + 1 = 5.

Your answer is \frac{5}{6}.

I hope this helps!

<h2><u>PLEASE MARK BRAINLIEST!</u></h2>
8 0
3 years ago
Read 2 more answers
The volume of a cube is 343mm3.<br> What is the length of its side?
stiv31 [10]

Answer:

Step-by-step explanation:

s is the length of each side of the cube

volume = s³

343 = s³

s = ∛343 = 7 mm

5 0
3 years ago
Read 2 more answers
Find the are of the triangle​
Oksanka [162]

Answer:

5 units^2

Step-by-step explanation:

Area of a triangle =

\frac{bh}{2}

plugging in:

\frac{5 \times 2}{2}

\frac{10}{2}

5

4 0
3 years ago
Read 2 more answers
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