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2 years ago

Order the expressions from least value to greatest value.

Mathematics

1 answer:

trasher [3.6K]2 years ago

7 0

You have to answer all of the equations first

-4.8 • 3.2 = -15.36 (negative times a positive is negative)

2 1/4 + (-1 2/5) first find a common denominator, which would be 20

9/4= 45/20
-7/5 = -28/20

since adding a negative is the same as subtracting a positive, you would subtract 45 and 28 which is 17.

17/20 = 1 3/20 (the answer)

turn the fraction into a decimal by dividing the top number by the bottom number, so 17/20 = 0.85

4.92 divided by -3 equals -1.64 (the answer)

-2 3/5 - (-1 2/5)

make them into improper fractions which is -13/5 and -7/5

it stays negative, so the answer is -6/5 or -1.2

so the answer is
-4.8 • 3.2 < 4.2 divided by -3 < -2 3/5 - (-1 2/5) < 2 1/4 + (-1 2/5)

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Katya measured the growth of a plant seeding. The seedling grew 1/3 inch by the end of the first week and another 5/6 inch by th

snow_tiger [21]

Answer: 1 1/6

Step-by-step explanation: I just used simple addition and then you should get the answer above becyase they ask the growth which was displayed

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2 years ago

When you draw a multi-phase sample ____. Group of answer choices

notsponge [240]

Answer:

The correct answer is letter "B": You use information from a first sample for collecting a subsequent subsample for further study.

Explanation:

Multi-phase sampling is a strategy by which a large number of data under study is taken, then a subsample of that pool is taken, and after that, another smaller subsample is taken in an attempt to count with samples that best might represent the whole population. Usually, the process takes collecting two different samples, but it can be applied as many times as necessary.

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3 years ago

What is the rate of change between (29,9) and (33,10)?

Tema [17]

Answer:

$\frac{1}{4}$

Step-by-step explanation:

The rate of change is a measure of the slope

Calculate the slope m using the slope formula

m = $\frac{y_{2}-y_{1} }{x_{2}-x_{1} }$

with (x₁, y₁ ) = (29, 9) and (x₂, y₂ ) = (33, 10)

m = $\frac{10-9}{33-29}$ = $\frac{1}{4}$ ← rate of change

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3 years ago

Jim and Sarah invited seven friends over for dinner. If each friend brought one guest how many people will be at the dinner excl

Vanyuwa [196]

16 people would be at the dinner because Jim and Sarah invited 7 friends and each friend brought 1 guest, so you do 7*2=14 and the 14 + Jim and Sarah=16 people.

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3 years ago

Maria want to make a footstool in the shape of a cylinder, as show below. She wants to fill the footstool with foam and cover it

dexar [7]

Answer:

She'll need 8143 cubic inches of foam and 1,809.6 square inches of fabric.

Step-by-step explanation:

Assuming you want to know how much foam and fabric she will need...

First the foam... so we need to determine the volume of that footstool. The Volume of a cylinder is given by:

V = π * r² * h

So, we plug in the numbers:

V = π * 12² * 18 = π * 144 * 18

V = 2,592 π = 8143 cubic inches.

Now for the fabric... we'll assume Maria wants to cover the side of the stool and the top, but not the bottom.

The side of the stool is basically a rectangle of width of 18 inches and a length of the circumference of the base of the stool. The circumference is given by: C = 2 π * r of course, so C = 24π = 75.14 inches.

So the lateral surface of the cylinder is:

LS = 18 * 75.14 = 1,357.2 sq inches.

Then we need to calculate the area of the top... which is easy:

A = π * r² = π * 12² = 144 π = 452.4 sq inches

So, to cover the lateral side of the footstool and its top, she needs to use:

TA = 1,357.2 + 452.4 = 1,809.6 sq inches of fabric.

8 0

3 years ago