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Mandarinka [93]

3 years ago

14

Solve for s. 4s + 6s - 4 = 6

1 answer:

UkoKoshka [18]3 years ago

6 0

Answer:

s = 1

Step-by-step explanation:

4s + 6s - 4 = 6

10s - 4 = 6

+ 4 +4

10s = 10

10s/10=

s = 1

Hope this helps! If you have any additional questions please don't hesitate to ask me or your teacher to be sure you master the subject. :) Stay safe and please mark brainliest!

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Kevin's work for deriving the equation of a circle is shown below. x2 + 4x = −(y2 − 20) step 1 x2 + 4x = −y2 + 20 step 2 x2 + 4x

SVEN [57.7K]

We have the following equation:
x2 + 4x = - (y2 - 20)
Let's review step by step:
step 1:
x2 + 4x = -y2 + 20
Answer: OK
step 2:
x2 + 4x + 4 = -y2 + 20 - 4
Answer: Wrong
The correct step is:
x2 + 4x - 4 = -y2 + 20 - 4
Or equivalently:
x2 + 4x + 4 = -y2 + 20 + 4
Answer:
he did make an error in his work in step 2

7 0

4 years ago

Please solve question 11 please, its so harddddddd

Naddik [55]

Answer:

The scale factor is 3.

Step-by-step explanation:

Take the new pupil size divided by the original pupil size

6.3/2.1 = 3

If this answer is correct, please make me Brainliest!

5 0

3 years ago

Sam bought 2 1/4 pounds of Swiss cheese and 1 1/2 pounds of cheddar at the deli. How many pounds of cheese did Sam buy altogethe

xxMikexx [17]

6 pounds of cheese?
2+1=3
1/4+1/2=2/6
2/2÷2/6=3
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5 0

4 years ago

Read 2 more answers

Andre tried to solve the equation 1/4(x+12)=2 what was his mistake?

timofeeve [1]

He didn’t multiply by 4 first

7 0

3 years ago

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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

so

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

<em>To minimize the cost we must minimize the perimeter</em>

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 $40\ ft$

<u>Find the value of y</u>

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

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

$y=10\ ft$

The cost of fencing is equal to

$5*40= \$200$

therefore

<u>the answer is</u>

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

7 0

3 years ago