hey um, so i’m learning ab percentages in my math class so can someone please explain to me how to solve percent problems if that’s ok? thank you.

Answer:

[tex]SD= 3.24[/tex]

Step-by-step explanation:

Given

[tex]Proportion, p = 30\%[/tex]

[tex]Population, n = 50[/tex]

Required

Determine the standard deviation

Standard Deviation (SD) is calculated as:

[tex]SD= \sqrt{np(1-p)}[/tex]

Substitute values for n and p

[tex]SD= \sqrt{50 * 30\% * (1-30\%)}[/tex]

Convert percentage to decimals

[tex]SD= \sqrt{50 * 0.30 * (1-0.30)}[/tex]

[tex]SD= \sqrt{50 * 0.30 * 0.70}[/tex]

[tex]SD= \sqrt{10.5}[/tex]

[tex]SD= 3.24[/tex] approximated

Answer: 44%

Step-by-step explanation:

There are 25 squares in the rectangle. This means that the percentage of each square is:

= 1/25 * 100

= 4%

There are 11 shaded squares so the percentage represented is:

= 11 * 4%

= 44%

Question:

The grocery store has 20% off from the original price on cereal. The equation for finding the sale price would be y = x - (.20x). What is the sale price if the cereal cost $4.00?

Answer:

The sales price is $3.20

Step-by-step explanation:

Given

[tex]y = Sales\ Price[/tex]

[tex]x = Cost[/tex]

[tex]y = x - (0.20x)[/tex]

Required

Determine y when x = 4.00

To do this, we simply substitute 4.00 for x in [tex]y = x - (0.20x)[/tex]

[tex]y = 4.00 - (0.20 * 4.00)[/tex]

[tex]y = 4.00 - 0.80[/tex]

[tex]y = 3.20[/tex]

Hence, the sales price is $3.20

Answer:

Either increase the number of acres that can be used for strawberry fields (by buying more land)..If we use the same numbers from earlier, then the farmer should use approximately 16.65 acres of land (or just 17 acres of land)

So if the farmer has 17 acres of land or more, then he will make more than $70,000 per year

Step-by-step explanation:

Use the proportions from earlier

We have the point (5, 21000)

70,000/21,000 = 3.3

To find the x-value multiply 3.3 by 5

3.3 * 5 = 16.65

We can even use the other point's values to find the exact same answer

Point (3.5, 14700)

70,000/14,700= 4.7619047619

4.7619047619 * 3.5 = 16.66 (literally about the same)

Answer:

$4,800

Step-by-step explanation:

15% of $32,000

15% × 32000

0.15 × 32000 = $4,800

15% of $32,000 is $4,800 which will go to charity :)

Answer:

Ameliorate retort, pertaining to preceding albeit contingent interrogate proximates subject to x = 12.

Step-by-step explanation:

Availing, exploiting, albeit maneuvering the Mathematic convention, Order of Operations (OO), the contiguous albeit proximate equation may ascertain as the preeminent imminent:

Groups: Not identified.

Exponents: Not identified, disparaging ₁.

Multiplication: Derived, pertaining to subtraction, 4 · (7/4x) = 4 · 21  7x = 84

Division: Derived, pertaining to multiplication, 7x = 84 ⇒ x = 12

Addition: Aggregate constants ⇒ 5/2x = 3/4x +21

Subtraction: Abate algebraic groups ⇒ 7/4x = 21

Answer:

[tex] \huge \frac{ \frac{2}{3} }{ \frac{1}{2} } = \frac{4}{3} [/tex]

Step-by-step explanation:

2/3 : 1/2

0.6:0.5

I hope that this will help you

Answer:

∆ adc is congruent to ∆ abc by asa congruence rule where CA is common side,

so CD and CB are congruent therefore angle cbe is same as angle cde

so ∆ bce and ∆ dce are congruent by ASA congruence rule

The triangle BCE is congruent to triangle DCE if ∠1 is congruent to ∠2 and ∠3 is congruent to ∠4.

Two triangles are said to be congruent if the length of the sides is equal, a measure of the angles are equal and they can be superimposed.

For the figures to be congruent they must be the same size and shape or one could mirror the other since they mirror each other and are the same size and shape they are congruent.

In triangle ∆ ADC and ∆ ABC

∠2 = ∠1

∠4 = ∠3

Thus, ∆ ADC ≅ ∆ ABC

∆ ADC is congruent to ∆ ABC by ASA congruence rule where CA is common side.

Also, CD and CB are congruent therefore angle CBE is same as angle CDE.

Similarly, ∆ BCE and ∆ DCE are congruent by ASA congruence rule.

The triangle BCE is congruent to triangle DCE if ∠1 is congruent to ∠2 and ∠3 is congruent to ∠4.

Learn more about congruent triangles;

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Answer: 144 boxes.

Step-by-step explanation: 15 is 1/4 of an hour. That means you need an hour to make 48 boxes. Then, multiply that by 3.

Answer:

144

Step-by-step explanation:

3 hours is 180 minutes

180/15 = 12

12*12= 144

so she will sell 144 boxes of cookies

Answer:

150

Step-by-step explanation:

Answer:

150 cents

Step-by-step explanation:

if 1 dollar equals 100 cents then 1 dollar and 50 cents is one hundred fifty cents

Answer:

d. 59.1 billion

Step-by-step explanation:

i noticed a pattern that each year is increasing by 12.9 billion i added 12.9 to 46.2 and got the answer

its soo easy wth

Answer:

Store C has the lowest price of $7.00

Step-by-step explanation:

Store A's sale gets you 15% off the shoes. 15% of 35 is $25.50

Store B's sale gets you $5.00 off the shoes. $35.00 - $5.00 = $30.00

Store C's sale gets you 1/5 off the shoes. 1/5 of $35.00 is $7.00

That means that the only true statement is the Store C's shoes are $7.00

Hope this helps you for next time you get a problem like this.

Answer:

1 by 4

Step-by-step explanation:

The computation of the probability is as follows

Here we assume the moves in a complex numbers i.e. a, b and c

Now the frog begins with the starting point.

So it would become easy to represent the exactly one element in a set that has lower or equal than 1

|a + b + c| , |a + b - c|, |a - b + c|, |a - b- c|

So here the probability is 1 by 4

Answer:

need points

Step-by-step explanation:

blah blah blah blah blah hope u pass

Answer:

(6,9) and (7,9) - assuming the graph only has a single quadrant and the rectangle is vertical

Step-by-step explanation:

We know that the distance between (6,1) and (7,1) is one unit. Because a rectangle has 2 pairs of equal sides, we know that the distance between the 2 missing coordinates is equal to one. We then add these two units. Because the rectangle has a parameter of 18 units, we then have to subtract these 2 units from the total, leaving us with 16 units for both sides. We then divide 16 by 2 because there are 2 sides, leaving us with 8 units for each side. Assuming we are working with a coordinate graph (with only one quadrant instead of 4 on a coordinate plane), and assuming the rectangle is vertical, the missing coordinates should be 8 units above the coordinates you were given. Hope this helps! :)

Answer:

Concept: Caclulating Standard Variables

8-5+43/8

43 divided by 8 is 5.375.

8-5+5.375

8+0.375

The answer I got was 8.375

Answer:

No, negative

Step-by-step explanation:

the sign of the product of two numbers with opposite signs is a negative.

-5 * 4 = -20

5 * -4 = -20

The statement "the sign of the product of two numbers with opposite signs is a positive" is false.

It is defined as the operation in which we do the addition of numbers, subtraction, multiplication, and division. It has basic four operators that are +, -, ×, and ÷.

It is given that:

The statement is:

The sign of the product of two numbers with opposite signs is a positive

Let x be the number and x > 0

And let y be the number y < 0

The product of the above two numbers:

xy = -(A)  because x > 0 and y < 0

Here A is the positive real number or A > 0

The sign of the product of two numbers with opposite signs is negative.

Thus, the statement "the sign of the product of two numbers with opposite signs is a positive" is false.

Learn more about the arithmetic operation here:

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Answer:

15,840

Step-by-step explanation:

5280 feet in a mile

multiply by 3

Answer: 15840 feet

Step-by-step explanation: 1 mile = 5280 feet. So, multiply 5280 by 3. Your answer should be 15840 feet.

Answer:

3

Step-by-step explanation:

2, 3, 5, 7, 11, 13, 17, 19, 23, 29

(23, 7, 2)

(19, 11, 2)

(17, 13, 2)

Answer:

13.75

Step-by-step explanation:

Answer:

45+60

Step-by-step explanation:

(60+40)+(60+5)=165

45 + 60

= (5 × 9) + (5 × 12)

= 5 × (9 + 12)

Answer:

The population of deer at any given time = 200(e^0.03t)  ÷ (1.5 + (e^0.03t))

Step-by-step explanation:

This is an example of logistic equation on population growth

carrying capacity, k = 200

Rate, r = 3% = 0.03

Initial Population, P1 =  80

P(t) =?

P(t) = (P1 (k)(e^rt)) ÷ (k- P1 + P1(e^rt))

P(t) = (80 (200)(e^0.03t)) ÷ (200 - 80 + 80(e^0.03t))

     = (16000(e^0.03t))  ÷ (120 + 80(e^0.03t))

      = 200(e^0.03t)  ÷ (1.5 + (e^0.03t))

The given expression is a difference of squares, so we have

16 (a + b)² - 49 (a - b)² = 4² (a + b)² - 7² (a - b)²

… = (4 (a + b))² - (7 (a - b))²

… = (4 (a + b) - 7 (a - b)) (4 (a + b) + 7 (a - b))

… = (4a + 4b - 7a + 7b) (4a + 4b + 7a - 7b)

… = (-3a + 11b) (11a - 3b)

Answer:

the correct answer is gg man

Step-by-step explanation:

Answer:

the answer would be 385 and there u go

Answer: 385

Step-by-step explanation: 77% of 500 is 385

Answer:

ga sbgjdsbjdvbhjvbhjvcnb bn dsb sd

Step-by-step explanation:

Larry  Fitzgerald caught 109, John Brown caught  65 and  Michael Floyd caught 52.

Determine the known quantities and designate the unknown quantity as a variable while trying to set up or construct a linear equation to fit a real-world application.

An equation is a set of variables that are constrained through a situation or case.

Let's say the number of passes that Larry caught = L

Let's say the number of passes that John caught = J

Let's say the number of passes that Michael caught = M

Given,

Cardinals caught a total of 226 passes.

So,

L + J + M = 226

Larry Fitzgerald caught 44 more passes than John Brown

L = 44 + J

Michael Floyd caught 13 fewer catches than John Brown.

M = J - 13 ⇒ J = M + 13

Substituting this J into the above equation,

M = 52 , L = 109 and  J = 65

Hence, Larry  Fitzgerald caught 109, John Brown caught  65 and  Michael Floyd caught 52.

For more about the equation,

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Answer:

Step-by-step explanation:

If you have to have online people help you just give up on that answer and guess