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frez [133]
3 years ago
8

Help me out plzz and I'll do the same

Mathematics
1 answer:
elixir [45]3 years ago
6 0
I think it's -2 to -1 is the right answer maybe

but i hope it helps u !!
You might be interested in
What are the dimensions of a rectangular wall that can be constructed with 400 feet of brick that will maximize the area enclose
ollegr [7]

Answer:

The dimensions of the wall are 100 ft x 100 ft

Step-by-step explanation:

we know that

The perimeter of a rectangular wall is

P=2(x+y)

where

x is the length

y is the width

we have

P=400\ ft

so

400=2(x+y)

simplify

200=x+y

y=200-x ----> equation A

The area of a rectangular wall is equal to

A=xy ----> equation B

substitute equation A in equation B

A=x(200-x)\\A=-x^2+200x

This is the equation of a vertical parabola open downward (because the leading coefficient is negative)

The vertex represent a maximum

Convert the quadratic equation in vertex form

A=-x^2+200x

Factor -1

A=-(x^2-200x)

Complete the square

A=-(x^2-200x+100^2)+100^2

A=-(x^2-200x+10,000)+10,000

Rewrite as perfect squares

A=-(x-100)^2+10,000 ----> equation in vertex form

The vertex is the point (100,10,000)

The x-coordinate of the vertex represent the length of the wall for a maximum area

so

x=100\ ft

Find the value of y

equation A

y=200-(100)=100\ ft

therefore

The dimensions of the wall are 100 ft x 100 ft

4 0
3 years ago
WILL MARK YOU BRAINIEST
lesya692 [45]

Answer:

11 5/9

Step-by-step explanation:

4 0
3 years ago
True or false please help thank you
Leni [432]

Answer:

True.

<em>See</em><em> </em><em>below</em><em> </em><em>for</em><em> </em><em>explanation</em><em>.</em><em> </em>

Step-by-step explanation:

<u>Reason</u><u> </u><u>1</u>

  • When we solve the equation by combining both equations in one, the variable will become 0.

<u>Proof</u>

\begin{cases} y = 4x - 3 \\ y = 4x - 5 \end{cases} \\ 4x - 3 = 4x - 5

Combine like terms.

4x - 4x =  - 5 + 3 \\ 0 =  - 2

See that the equation is false no matter which numbers you substitute in x-term.

<u>Reason</u><u> </u><u>2</u>

  • Both graphs are parallel and don't have any intercepts to each others.

<em>See the attachment below for graphs</em>.

Since both graphs do not really have intercepts, that means they do not provide any solutions. Hence, no solutions.

5 0
3 years ago
Which of the following is true about the median of a trapezoid?
fredd [130]

According to the definition of the median of the trapezoid: B. The length of the median is half the sum of the lengths of the bases.

<h3>What is the Median of a Trapezoid?</h3>

The median of a trapezoid is the line segment that connects the two legs of a trapezoid and is parallel to each of the base of the trapezoid. Also, the length equals half of the sum of the two base lengths of the trapezoid.

Thus, based on the definition of the median of a trapezoid, the true statement is: B. The length of the median is half the sum of the lengths of the bases.

Learn more about the median of a trapezoid on:

brainly.com/question/1451734

#SPJ1

6 0
2 years ago
the radius of the Earth is 6378.1 KM which is 2981 .1 km longer than the radius of Mars write and solve the equation to determin
Bad White [126]
6,378.1 - 2,981.1&#10;&#10;= 6,000 + 300 + 70 + 8 + 1/10 - 2,000 - 900 - 80 - 1 - 1/10&#10;&#10;= (6,000 - 2,000) + (300 - 900) + (70 - 80) + (8-1) + (1/10-1/10)&#10;&#10;= 4,000 - 600 - 10 + 7 + 0&#10;&#10;= 3,400 - 3 &#10;&#10;= 3,397
7 0
4 years ago
Read 2 more answers
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