All categories

3 years ago

Help please. It's be thanks.

Mathematics

1 answer:

inessss [21]3 years ago

7 0

Answer:

your answer is choice a

Step-by-step explanation:

because the one line passes the x-axis at -3.5 and the other line crosses the x-axis at 3. then you have another line that crosses the y-axis at 2

You might be interested in

There were 75 people at a concert. Twenty five percent of them were younger than 13. How many people were thirteen or younger.

sasho [114]

Answer:

Step-by-step explanation:

$0.25*75 = 18\\$ (must round down for population)

8 0

2 years ago

4m- t = m for m.......................................

Kruka [31]

4m-t=m Solution: collect d like term's 4m-m=t 3m=t m=t/3

7 0

3 years ago

Convert 237 into binary system

Alex_Xolod [135]

Answer:

237 in binary is 0b11101101

7 0

3 years ago

Read 2 more answers

Find the dimensions of the open rectangular box of maximum volume that can be made from a sheet of cardboard 21 in. by 12 in. by

a_sh-v [17]

Answer:

Dimension of the box is $16.1\times 7.1\times 2.45$

The volume of the box is 280.05 in³.

Step-by-step explanation:

Given : The open rectangular box of maximum volume that can be made from a sheet of cardboard 21 in. by 12 in. by cutting congruent squares from the corners and folding up the sides.

To find : The dimensions and the volume of the box?

Solution :

Let h be the height of the box which is the side length of a corner square.

According to question,

A sheet of cardboard 21 in. by 12 in. by cutting congruent squares from the corners and folding up the sides.

The length of the box is $L=21-2h$

The width of the box is $W=12-2h$

The volume of the box is $V=L\times W\times H$

$V=(21-2h)\times (12-2h)\times h$

$V=(21-2h)\times (12h-2h^2)$

$V=252h-42h^2-24h^2+4h^3$

$V=4h^3-66h^2+252h$

To maximize the volume we find derivative of volume and put it to zero.

$V'=12h^2-132h+252$

$0=12h^2-132h+252$

Solving by quadratic formula,

$h=\frac{-b\pm\sqrt{b^2-4ac}}{2a}$

$h=\frac{-(-132)\pm\sqrt{132^2-4(12)(252)}}{2(12)}$

$h=\frac{132\pm72.99}{24}$

$h=2.45,8.54$

Now, substitute the value of h in the volume,

$V=4h^3-66h^2+252h$

When, h=2.45

$V=4(2.45)^3-66(2.45)^2+252(2.45)$

$V\approx 280.05$

When, h=8.54

$V=4(8.54)^3-66(8.54)^2+252(8.54)$

$V\approx -170.06$

Rejecting the negative volume as it is not possible.

Therefore, The volume of the box is 280.05 in³.

The dimension of the box is

The height of the box is h=2.45

The length of the box is $L=21-2(2.45)=16.1$

The width of the box is $W=12-2(2.45)=7.1$

So, Dimension of the box is $16.1\times 7.1\times 2.45$

6 0

3 years ago

What is 3.5 rounded to the nearest hundredth?<br> HELP QUICK

PSYCHO15rus [73]

4.0!

3.5=350
thats is 4.0

5 0

3 years ago

Read 2 more answers

Help please. It's be thanks. ​

Help please. It's be thanks.