Help me please! I don’t understand! I’ll give you brainly!

Answer: The area would be 6 feet

Step-by-step explanation:

To find the area, we multiply the length and width

Answer:

68.27%.

Step-by-step explanation:

Here we have [tex]\mu=500,\sigma=100[/tex]

Let X shows the SAT score. z-score for X=400 is

[tex]z=\frac{X-\mu}{\sigma}=\frac{400-500}{100}= -1[/tex]

z-score for X=600 is

[tex]z=\frac{X-\mu}{\sigma}=\frac{600-500}{100}=1[/tex]

So the proportion of SAT scores falls between 400 and 600 is

[tex]P(400<X<600)=P(-1<z<1)=0.6827[/tex]

hence, required percentage is 68.27%.

one can use the same method to find the% for all other cases as

well.

Answer:

7/32

Step-by-step explanation:

[tex]\frac{7}{20n}=\frac{8}{5}[/tex]

we can multiply the elements on the diagonal so

20n*8=7*5

160n=35

we divide the relation by 160

n=35/160=7/32

Answer:

A. y- 3 = -12(x - 5)

Step-by-step explanation:

Answer:

An equation in point-slope form for the line will be:

[tex]y - (-3) = 8 (x - (-4))[/tex]

Please check the attached line graph also.

Step-by-step explanation:

Given

The point (-4, -3)

The slope m = 8

To determine

Write an equation in point slope form for the line.

Using the point-slope form of the line equation

[tex]y-y_1=m\left(x-x_1\right)[/tex]

where

In our case,

substituting the values m = 8 and the point (-4, -3)

[tex]y-y_1=m\left(x-x_1\right)[/tex]

[tex]y - (-3) = 8 (x - (-4))[/tex]

Therefore, an equation in point-slope form for the line will be:

[tex]y - (-3) = 8 (x - (-4))[/tex]

Please check the attached line graph also.

Answer:

There are 43 nickels in the piggy bank.

Step-by-step explanation:

Given that:

Number of coins = 91

Worth of coins = $6.95 = 6.95*100 = 695 cents

Let,

x be the number of nickles

y be the number of dimes

According to given statement;

x+y=91     Eqn 1

5x+10y=695     Eqn 2

Multiplying Eqn 1 by 5

5x+5y = 455    Eqn 3

Subtracting Eqn 3 from Eqn 2

(5x+10y)-(5x+5y)=695-455

5x+10y-5x-5y=240

5y = 240

[tex]\frac{5y}{5}=\frac{240}{5}[/tex]

y = 48

Putting y=48 in Eqn 1

x+48=91

x=91-48

x= 43

Hence,

There are 43 nickels in the piggy bank.

Answer: 10a, all of the numbers can be divided by 10a

10a (6x − 4y + 5z) = 60ax - 40ay + 50az

Answer: C isn't correct.

Step-by-step explanation:

C is NOT correct

The equation that represents the situation is y = 50x not x = 50y

Hope I helped! :3

9514 1404 393

Answer:

  3.65% monthly

Step-by-step explanation:

The same amount is invested for the same period in all accounts, so we only need to determine the effective annual rate in order to compare the accounts.

For compounding annual rate r n times per year, the effective annual rate is ...

  (1 +r/n)^n -1

For the same rate r, larger values of n cause effective rate to be higher. As a consequence, we know that 3.65% compounded quarterly will not have as great a yield as 3.65% compounded monthly. The effective rate for the monthly compounding is ...

  (1 +0.0365/12)^12 -1 = 3.712%

The effective rate for continuous compounding is ...

  e^r -1

For a continuously compounded rate of 3.6%, the effective annual rate is ...

  e^0.036 -1 = 3.666%

This tells us the best yield is in the account bearing 3.65% compounded monthly.

_____

If i is the effective annual rate of interest as computed by the methods above, then the 10-year account balance will be ...

  10000×(1 +i)^10

This is the formula used in the spreadsheet to calculate the balances shown.

Answer:

what ???????????????????? repost this question

Answer:

(2, 4)

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Equality Properties

Algebra I

Step-by-step explanation:

Step 1: Define Systems

y = 2x

x = -y + 6

Step 2: Solve for y

Substitution

Step 3: Solve for x

Answer:

There is one solution

Answer:

It has one (-1.4,-1.2)

Step-by-step explanation:

I graphed both lines on desmos graphing calculator and they only crossed at one point.

Answer:

The base of the number is 8

Answer:

The Buzz can travel 733.33 feet per second.

Step-by-step explanation:

An hour has 60 minutes, each of which has 60 seconds. So one hour has 60*60 = 3600 seconds.

The airplane can fly 500 miles per hour. Each mile has 5280 feet. So the plane can fly 500*5280 = 2640000 feet in one hour.

Per second, we have:

[tex]\frac{2640000}{3600} = 733.33[/tex]

The Buzz can travel 733.33 feet per second.

Answer:

lol fr

Step-by-step explanation:

Answer:

Big pp

Step-by-step explanation:

Answer:

0.12$ , I'm probably wrong lolol

Answer: its the last answer I got it right

Answer:

Step-by-step explanation:

This is a help site, so I'll explain each property and see if you can match them yourself.

Associative property of addition, you can add 3 or more different numbers any which way, the sum will be the same.

Commutative Property of Addition - same as the associative property but with 2 numbers.

Identity Property of Multiplication - Any number multiplied by one is itself

Multiplicative Property of Zero: x * 0 = 0

Associative Property of Multiplication - Same as that of addition, yet with multiplication.

Distributive Property: Factoring Out.

EX: (12 x 15) = 3(4 x 5)

Answer:

80%

Step-by-step explanation:

Since this is an 80% chance we can say that on these days with same conditions, the probability of extreme high winds is 80% of the time in Miami.

Answer:correct answers are:

A.m<JPX=90°

B.XY & JK form right angles

E. JP=KP

F.XY⊥JK

Step-by-step explanation:

hope this helps

Answer:

No.

Step-by-step explanation:

y - 5 = 2(x - 1)

y = 2x + 3

y - 3 = 2(x + 3)

y = 2x + 9

Answer:

Substitution

Step-by-step explanation:

We essentially have x = 180 and a+b+c = x.

So we are just substituting x for a+b+c

9514 1404 393

Answer:

  7th grade: 16

  5th grade: 13

  7th grade median is higher by 3 points

Step-by-step explanation:

There are 21 dots in each plot, so the median score will be the score associated with the 11th dot, counting from either end.

In the 7th-grade data, that dot is in the "16" column. The 7th grade median is 16.

In the 5th-grade data, that dot is in the "13" column. The 5th grade median is 13.

__

The 7th grade median is higher by 3 points.

_____

Additional comment

Your options for filling in the relationship of the scores are not shown. You may have to interpret the result according to the options available.

Answer:

60

Step-by-step explanation:

Assuming that all 54 shelves hold the same number of books its just a matter of dividing them (or sharing them equally) on each shelf.

3240 / 54 = 60

Each shelf holds 60 books.

Answer:

42 miles/3 gallons

Step-by-step explanation: Multiplying 14 by 3 and 1 by 3 will give you 42/3, which keeps the unit ratio.

Answer:

42 miles/3 gallons

Step-by-step explanation:

Answer:

1)  [tex]\mathbf{\sqrt{50}= 5\sqrt{2} }[/tex]

2) [tex]\mathbf{\sqrt{28}= 2\sqrt{7} }[/tex]

3) [tex]\mathbf{\sqrt{252}= 6\sqrt{7} }[/tex]

Step-by-step explanation:

We need to simplify the radicals:

1) [tex]\sqrt{50}[/tex]

First we find prime factors of 50

50 = 2 x 5 x 5

Now,

[tex]\sqrt{50}\\=\sqrt{2\times 5\times 5}\\=\sqrt{2\times 5^2}\\ =\sqrt{2} \sqrt{5^2}\\=5\sqrt{2}[/tex]

So, [tex]\mathbf{\sqrt{50}= 5\sqrt{2} }[/tex]

2) [tex]\sqrt{28}[/tex]

First we find prime factors of 28

28 = 2 x 2 x 7

Now,

[tex]\sqrt{28}\\=\sqrt{2\times 2\times 7}\\=\sqrt{2^2\times 7}\\ =\sqrt{2^2} \sqrt{7}\\=2\sqrt{7}[/tex]

So, [tex]\mathbf{\sqrt{28}= 2\sqrt{7} }[/tex]

3) [tex]\sqrt{252}[/tex]

First we find prime factors of 252

50 = 2 x 2 x 3 x 3 x 7

Now,

[tex]\sqrt{252}\\=\sqrt{2\times 2\times 3\times 3 \times7}\\=\sqrt{2^2\times 3^2 \times7}\\ =\sqrt{2^2} \sqrt{3^2}\sqrt{7} \\=2\times 3\sqrt{7}\\=6\sqrt{7}[/tex]

So, [tex]\mathbf{\sqrt{252}= 6\sqrt{7} }[/tex]