MATHEMATICS MIDDLE SCHOOL

At 10:05 a.m., there are 2 microscopic bacteria cells in the bottle. At 10:15 a.m., there are 8 cells in the bottle. At what time will there be 64 cells in the bottle?

Answers

Answer 1
Answer:

Answer:

At 10:20 a.m., there will be 16 cells in the bottle.

At 10:30 a.m. there will be 64 cells in the bottle .

Step-by-step explanation:
Answer 2
Answer:

at 10:30 there will be 64 bacteria

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How to find the volume of the cone

Answers

Answer:

The closest measurement to the volume of hat is 84.82 in.³.

Step-by-step explanation:

Given:

The dimensions of hat are height(h) 9 inches and diameter(d) 6 inches.

Now, to find the volume of cone:

Putting the formula (1)/(3)\pi r^(2)h.

Radius(r) is not given, finding the radius:

Radius(r)=half of the diameter(d)

r=(d)/(2)

r=(6)/(2)

r=3.

Then, (1)/(3)\pi r^(2)h

=(1)/(3)*\pi *3^(2)*9

=(1)/(3)*3.14*9*9 (\pi =3.14)

=(1)/(3) *254.34

=(254.34)/(3)

=84.78 in.³

So, the volume is 84.78 in.³ .

Therefore, the closest measurement to the volume of hat is 84.82 in.³.

Simplify the given expression below 4/3-2ia. 4/13
b. 16/13
c. 12+8i/13
d. 12-8i/13

Answers

The correct answer is (4)/(3-2i)=(12)/(13)+i(8)/(13)

Steps:

\mathrm{Multiply\:by\:the\:conjugate}\:(3+2i)/(3+2i), =(4\left(3+2i\right))/(\left(3-2i\right)\left(3+2i\right))

\left(3-2i\right)\left(3+2i\right)=13, =(4\left(3+2i\right))/(13)

\mathrm{Rewrite\:}(4\left(3+2i\right))/(13)\mathrm{\:in\:standard\:complex\:form:\:}(12)/(13)+(8)/(13)i

=(12)/(13)+(8)/(13)i

The set of points P(0, 3), Q(2, 0), R(4, -3) are collinear and the line has a slope of _____.

Answers

Answer:

slope = -1.5

Step-by-step explanation:

A set of three or more points are said to be collinear if they all lie on the same straight line.

We have been given the following collinear set of points;

P(0, 3), Q(2, 0), R(4, -3)

This implies that P, Q, and R lie on the same line.

The slope of a line is defined as; (change in y)/(change in x)

Using the points P and Q, the slope of the line is calculated as;

(0-3)/(2-0) = -3/2 = -1.5

Answer:

-3/2

Step-by-step explanation:

How many times dose 10 go into 450

Answers

Answer:

10 go into 450 45 times

Step-by-step explanation:

Rewrite these expression with parentheses to equal the given value. 1: 3x4-1plus 2 value: 11 2: 2x6÷2plus 1 value: 4 3: 5plus 3x2-6 value: 10

Answers

1. 3(4-1)+2=11
3. 2(5+3)-6=10
Not sure how to do number 2 did you write the right way

Answer:

1. 3(4-1)+2=11

3. 2(5+3)-6=10

Step-by-step explanation:

Solve A=1/2h(b1+b2)
Solve for b1

Answers

A = (1)/(2) h (b_1+b_2) \n \n (2A)/(h) = b_1+b_2 \n \n b_1 = (2A)/(h) -b_2
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