MATHEMATICS MIDDLE SCHOOL

You have to solve this . Calculate the diameter of a human red blood cell is 0.000006 m. Write the diameter in scientific notation

Answers

Answer 1

Answer:

Answer:

6 x 10 to the -6 power

Step-by-step explanation:

Moved the decimal to the right 6, since less than 0 its negative

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Max is 135 centimeters tall he is 18 centimeters taller than Rita Rita is 30 centimeters shorter than Jan how tall is jan.

Answers

135 - 18 = 117 cm
Rita = 117 cm tall

117 cm + 30 = 147 cm

Jan is 147 cm tall.

If 2 pounds of strawberries cost $4.50 how much would 3 pounds cost?

Answers

we know that

$2$ pounds of strawberries cost $\$4.50$

by proportion

Find the cost of $3$ pounds of strawberries

$(4.50)/(2) (\$)/(pounds) =(x)/(3) (\$)/(pounds)\n \nx=(4.50*3)/2\n \nx=\$6.75$

therefore

the answer is

$\$6.75$

Paul owes Paula 3535 cents and has a pocket full of 55-cent coins, 1010-cent coins, and 2525-cent coins that he can use to pay her. What is the difference between the largest and the smallest number of coins he can use to pay her?

Answers

A 2524-cent coin and a 1010-cent coin

mr.smith is having some photos enlarged for his studio he wants to enlarge a photo that is 5in by 7in so the dimensions are 3 times larger than the original what are the dimensions of the enlarged photo

Answers

9 times larger

The reason is simple, all you need to do is 7 x 3, and 5 x 3, giving you the l x w of 15 and 21 inches. You multiply these numbers together, meaning the original length and width (l x w), which would be 5 and 7, which equals 35.

From here, you multiply 15 and 21, which gives you 315.

Divide 35 from 315, and see what you get!
Hope this helps!

Abhasra had some candy to give to her 4 children. She first took 9 piecesfor herself and then evenly divided the rest
among her children. Each child received
4 pieces. With how many pieces did
she start?

Answers

Answer:

25 pieces

Step-by-step explanation:

She took 9 pieces for herself, which means that we already know that she had at least 9 pieces. She has 4 children and gave them each four, so you times 4 children times 4 pieces each.

That gives us 16. 16=9=25

So 25 pieces. Hope it helps!

What is the slope of the graph of 2x – 6y = 9? A.1/3

B.-1/3

C.3

D.-3

Answers

Let's make our equation in the form of y = mx + b

2x – 6y = 9

Add 6y on both sides

2x = 6y + 9

Subtract 9 on both sides

6y = 2x - 9

Divide 6 on both sides

y = 1/3 - 3/2

Now, we have it in the form of y = mx + b

In y = mx + b, m is the slope and b is the y-intercept

That means in y = 1/3 - 3/2, the slope is A) 1/3.

Your answer is A) 1/3

2x – 6y = 9
Slope is coefficient near x in y=kx+l
2x – 9 = 6y
1/3 x – 3/2 = y
k = 1/3

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Consider five circles with a radii of 1, 2, 4, 8, and 16 inches. Write your answer in terms of pi r square. Compare the areas and circumference of a circle when you double the radius? What happens to the area? What happens when you triple the radius.The table lists the radius, circumference and area.

*******ASAP******The coordinate plane below represents a city. Points A through F are schools in the city.graph of coordinate plane. Point A is at 1, 3. Point B is at 3, 1. Point C is at 3, negative 3. Point D is at negative 4, 2. Point E is at negative 1, 5. Point F is at negative 3, negative 3.Part A: Using the graph above, create a system of inequalities that only contains points B and C in the overlapping shaded regions. Explain how the lines will be graphed and shaded on the coordinate grid above. Part B: Explain how to verify that the points B and C are solutions to the system of inequalities created in Part A. Part C: Lisa can only attend a school in her designated zone. Lisa's zone is defined by y > 2x + 5. Explain how you can identify the schools that Lisa is allowed to attend.