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Y_Kistochka [10]

2 years ago

5

Mary read a book that had 4200 pages last summer. If it took her 35 days to finish the book. How many pages did she read per day

?

1 answer:

asambeis [7]2 years ago

5 0

Do 4200/35............

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20 PTS!!!! What is the probability that a randomly selected person is on the swim team? Express the probability as a percent rou

Lerok [7]

There are 67 total people and 28 people on the swim team.

The probability of picking someone on the swim team would be 28/67 which is equal to 41.8%

7 0

2 years ago

Solve for x.<br> 4(x-3)= -2x - 4

geniusboy [140]

The answer should be x=4/3

8 0

2 years ago

Read 2 more answers

Simplify the following. (a) 3(-3 + 5x) - 1 (4 - 4x) (b) 3 squareroot 64 x^15 y^3 -2(-15 e^5 t/30 e^-2 t^-3)^0

Kaylis [27]

Answer:

a. 19x-13 b. $2(32x^{15}y^{3}-1).$

Step-by-step explanation:

a. 3(-3+5x)-1(4-4x) = -9+15x-4+4x = 15x+4x-9-4 = 19x-13.

b. $64x^{15}y^{3}-2(-15e^{5}\frac{t}{30}e^{-2}t^{-3})^{0}$

= $64x^{15}y^{3}-2 = 2(32x^{15}y^{3}-1).$

6 0

3 years ago

CATNUMATICAL Reason Quantitatively Rachel, Timothy, and Robyn each make

valkas [14]

Answer:

See explanation

Step-by-step explanation:

The question is incomplete, as the dimension of each prism is not given.

So, I will give a general explanation.

From the question, we understand each prism.

So, to get the new volume; we simply add up the volume of each prism.

For instance (we want to make assumptions)

Rachel

$Length = 4; Width = 3; Height = 4$

Timothy

$Length = 6; Width = 3; Height = 4$

Robyn

$Length = 4; Width = 8; Height = 3$

So, we have:

$Volume = Length * Width * Height$

For each, we have:

$Rachel =4* 3* 4 =48$

$Timothy= 6* 3* 4 = 72$

$Robyn = 4* 8* 3 = 96$

The volume of the new

$Volume = 48 + 72 + 96$

$Volume = 216$

The dimension of new prism.

Using the assumed values, we have:

$Length = 4; Width = 3; Height = 4$

$Length = 6; Width = 3; Height = 4$

$Length = 4; Width = 8; Height = 3$

Now, we consider the measure of the sides

Sides with the same length will form a new side.

<u>Side 1</u>

$Length =4$ --- Rachel

$Height = 4$ ---- Timothy

$Length = 4$ --- Robyn

The above lengths have the same measure. So, one of the sides of the new prism will assume the value of this length.

So:

$Length = 4$ -- for the new prism

<u>Side 2</u>

$Width =3$

$Width = 3$

$Height = 3$

The above lengths have the same measure. So, one of the sides of the new prism will assume the value of this length.

So:

$Width = 3$ -- for the new prism

<u>Side 2</u>

<u></u> $Height = 4$ <u></u>

$Length = 6$

<u></u> $Width =8$ <u></u>

<u></u>

<u>For this, we simply add up each length.</u>

<u>So, we have:</u>

<u></u> $Height = 4 + 6 + 8$ <u></u>

$Height = 18$ --- for the new prism

So, the new dimension is:

$Length = 4$

$Length = 6$

$Height = 18$

$Volume = 4 * 3 * 18$

$Volume = 216$

5 0

2 years ago

Simplify<br><img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B4%7D%7B2%20%2B%20i%7D%20" id="TexFormula1" title=" \frac{4}{2 + i} "

skad [1K]

Hey! Apologies that I can’t make this look nice because I’m on mobile.

To simplify this, we can multiply the denominator by its conjugate. For a imaginary function (a+bi), its conjugate would be (a-bi), so we can apply that here to multiply both sides by (2-i)/(2-i). This works because it simplifies to one. Then, we have our fraction as 4*(2-i)/((2-i)(2+i))=(8-4i)/(4-i^2)=(8-4i)/5

Feel free to ask further questions, and have a great rest of your day!

6 0

3 years ago