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3 years ago

Can anyone help me?

Mathematics

1 answer:

vlada-n [284]3 years ago

7 0

Answer:

a. 3.5 b. 2.25 c. 47.8 deg

Step-by-step explanation:

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Ne4ueva [31]

I feel like it x=89 degrees....Becuase that is what i got...

7 0

3 years ago

Find the sum of the first 42 terms of the following series, to the nearest

balandron [24]

Answer:

Step-by-step explanation:

Find the sum of the first 42 terms of the following series, to the nearest integer.

2,7,12

Solution

The sum is given by

SUM_n=n/2*(a_1+a_n)

a_n=a_1+(n-1)d

a_1=2, n=42, d=5

The 42nd term is therefore given by

a_42=2+(42-1)5=207

SUM_42=42/2*(2+207)=21*209=4389

The sum of the first 42 terms of the series, therefore, is 4389

5 0

3 years ago

a farmer is planning a rectangular area for her chickens. the area of the rectangle will be 200 square feet. three sides of the

Vladimir79 [104]

Let

x---------> the length side of the rectangular area

y---------> the width side of the rectangular area

we know that

the area of the rectangle is equal to

$A=x*y\\ A= 200\ ft^{2} \\ x*y=200$

$y=\frac{200}{x}$ -----> equation $1$

The perimeter of the rectangle is equal to

$P=2x+2y$

but remember that the fourth side of the rectangle will be formed by a portion of the barn wall

$P=x+2y$ -----> equation $2$

To minimize the cost we must minimize the perimeter

Substitute the equation $1$ in the equation $2$

$P=x+2*[\frac{200}{x} ]$

Using a graph tool

see the attached figure

The minimum of the graph is the point $(20,40)$

that means for $x=20\ ft$

the perimeter is a minimum and equal to $40\ ft$

Find the value of y

$y=\frac{200}{x}$

$y=\frac{200}{20}$

$y=10\ ft$

The cost of fencing is equal to

$5*40= \$200$

therefore

the answer is

the length side of the the fourth wall will be $20\ ft$

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3 years ago

Three friends go bowling the cost per person per game is $5.30 the cost to rent rule is $2.50 per person there total cost is $55

schepotkina [342]

The friends played 3 games

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3 years ago

What is the value of the expression 3 squared times the quantity of 2 cubed + 4 all divided by 2 squared?

antoniya [11.8K]

Answer:

Step-by-step explanation:

Put this into numbers:

$\frac{3^2*(2^3+4)}{2^2}$

Use Order of Operations to simplify. First, you would do the stuff in parentheses which is:

$2^3+4$

Inside of those parentheses first simplify the exponents:

$8 + 4$

Now add

$12$

So the new equation is:

$\frac{3^2*12}{2^2}$

The next step is to simplify the exponents

$\frac{9*12}{4}$

Multiply out the top

$\frac{108}{4}$

Divide this

$27$

5 0

3 years ago

Can anyone help me?​

Can anyone help me?