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4 years ago

Use the grid to create a model to solve the percent problem.

Mathematics

1 answer:

Delicious77 [7]4 years ago

6 0

For this case we can make the following rule of three:
21 ------> 70%
x --------> 100%
Clearing x we have:
x = (100/70) * (21)
Rewriting we have:
x = (10/7) * (21)
x = 30
Thus,
21 is 70% of 30
Answer:
21 is 70% of 30

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If you use 128m of fencing, what is the largest possible rectangular area you can enclose? What is

klasskru [66]

9514 1404 393

Answer:

largest: 1024 m²
smallest: 0 m²

Step-by-step explanation:

The largest rectangular area with a given perimeter is a square. Each side of the square will be 1/4 of the fence, or 32 m.

The largest enclosed area is (32 m)² = 1024 m².

The smallest area will be that of an enclosure consisting of a double-row of fence: 64 m long and 0 m wide.

The smallest enclosed area is (64 m)(0 m) = 0 m².

_____

"Whole numbers" include zero. If you want the lengths to be Natural numbers, then the smallest area will be 63 m long and 1 m wide, or 63 m².

7 0

3 years ago

Use the following information to answer the next two questions

charle [14.2K]

To get the exponential model we use the form:
y=abˣ
where:
a=initial value
b=growth factor
y=number of years
thus using point (1,63) and (2,226)
the growth factor will be:
b=(226/63)=3.587~3.6
a=63
thus the formula for the function will be:
A(y)=a(3.6)^y
substituting (1,63) in the equation and solving for a.
63=a(3.6)^1
thus
a=63/3.6=17.5
hence the formula will be:
A(y)=17.82(3.6)^y

Answer: D] 17.5(3.6)^y

2] The number of acres defoliated after 5 years will be as follows:
y=5 years
A(y)=17.82(3.6)^y
plugging in the value we get:
A(y)=17.82(3.6)^5
simplifying the above
A(y)=10775.07
A(y)=10775

Answer: D

4 0

3 years ago

Barb is making a bead necklace. She strings 1 white bead,then 3 blue beads,then 1 white bead,and so on. Write the numbers for th

nataly862011 [7]

The numbers for the first eight beads that are white are; 1, 5, 9, 13, 17, 21, 25, 29

<h3>Arithmetic Sequence</h3>

We are told that she strings in this order;

1 white
3 blue
1 white bead

Now, after the first white bead, the next white bead is the 5th bead in total.

This means the difference in interval between white beads is; 5 - 1 = 4 beads

Thus, the numbers for the first eight beads that are white are;

1, (1 + 4), (1 + 4 + 4), (1 + 4 + 4 + 4).....

Thus, we have;

1, 5, 9, 13, 17, 21, 25, 29

Read more on arithmetic sequence at; brainly.com/question/7849474

8 0

2 years ago

Read 2 more answers

A spinner is divided into many sections of equal size. Some sections are red, some are blue, and the remaining are green. The pr

STatiana [176]

2/20 since the red and he blue section adds up to 18/20. So what is left would be green (2/20).

8 0

3 years ago

Help pls omg its due in an hour

telo118 [61]

Answer:

Well you could try measuring it out with a ruler or count the dots that would be there or even try a graph this might help u

Step-by-step explanation:

1: count the dots that are going diagnal

2: try using a ruler

3: then graph the points and see if this helps

8 0

3 years ago