Mr. Chengs class has 28 students 4/7 of whom are girls which equation shows how do you determine the number of girls in Mr. Chengs class

Answers

Answer 1
First, multiply 28 x 4/7 to get the number of girls in the class which is 16.
So, there are 16 girls in Mr.Chang’s class.

Then, to figure out how many boys are in the class, subtract the number of girls from the total number of students. 28-16= 12.
So, there are 12 boys in the class.

Hope this helps!

Related Questions

Does anyone know this answer

Answers

Answer:

the third option

Step-by-step explanation:

by shifting it up 3, you just add 3 to -7 which is -4

by shrinking it a factor of 1/2, you multiply -2 by 1/2 which is -1

1. If f(x) = 5X - 2 Find f(4)

Answers

Answer:18

f(x) = 5x - 2

=> f(4) = 5.4 - 2 = 20 - 2 = 18

Step-by-step explanation:

Answer:

18 hope it will help you

Which expressions are equivalent to 25x4 −64? Select three options. 25x4 + 40x − 40x − 64 25x4 + 13x − 13x − 64 (5x2 + 8)(5x2 − 8) (x2 + 13)(x2 – 13) (5x2 – 8)2

Answers

Answer:

a, b, c

25x4 + 40x − 40x − 64, 25x4 + 13x − 13x − 64, (5x2 + 8)(5x2 − 8)

Step-by-step explanation:

The expressions that are equivalent to 25x⁴ - 64 are; Options A, B and C

How to simplify the Algebra?

We want to find the expression equal to 25x⁴ - 64

A) 25x⁴ + 40x − 40x − 64 = 25x⁴ - 64

B) 25x⁴ + 13x − 13x − 64 = 25x⁴ - 64

C) (5x² + 8)(5x² - 8)

Expanding the bracket gives;

⇒ 25x⁴ - 64

D) (x² + 13)(x² - 13)

Expanding the bracket gives;

⇒ x⁴ - 169

E) (5x² - 8)²

Expanding the bracket gives;

⇒ 25x⁴ - 5x² + 64

Looking at all the answers, only options A, B and C are correct

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Shelby Industries has a capacity to produce 45,000 oak shelves per year and is currently selling 40,000 shelves for $32 each. Martin Hardwoods has approached Shelby about buying 1,050 shelves for a new project and is willing to pay $26.8 each. The shelves can be packaged in bulk; this saves Shelby $1.14 per shelf compared to the normal packaging cost. Shelves have a unit variable cost of $25.4 with fixed costs of $350,000. Because the shelves don’t require packaging, the unit variable costs for the special order will drop by $1.14 per shelf. Shelby has enough idle capacity to accept the contract. What is TOTAL the profit/loss if Shelby should accept for this special order?

Answers

Answer:

y = mx + c

since m = 0

c = 9

$350,000 + $25.4 = y value

The total loss is $347,115 for Shelby if they accept the special order.

What is the profit?

The profit is equal to the difference between the selling price and the original cost price.

To find the profit or loss for Shelby if they accept the special order, we need to calculate their total revenue from the sale and subtract their total costs.

First, let's calculate the total revenue from the sale of the 1,050 shelves to Martin Hardwoods. The price per shelf is $26.8, so the total revenue is 1,050 shelves x $26.8/shelf = $28,020.

Next, we need to calculate the total cost of producing and packaging the shelves. The unit variable cost is $25.4 per shelf, but because the shelves don't need to be packaged, the unit variable cost will be reduced by $1.14 per shelf. This means the unit variable cost for this special order is $25.4 - $1.14 = $24.26 per shelf.

The total cost of producing the 1,050 shelves is 1,050 shelves x $24.26/shelf = $25,135.

Finally, we need to add in the fixed costs of $350,000. This means the total cost of the special order is $25,135 + $350,000 = $375,135.

To find the profit or loss, we subtract the total cost from the total revenue: $28,020 - $375,135 = -$347,115.

Therefore, the total profit or loss for Shelby if they accept the special order is a loss of $347,115.

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PLZZ NEED HELPP ANDD FASSTT ⚠️⚠️⚠️⚠️

Answers

Answer:

d

Step-by-step explanation:

Answer:

the answer for your question is B.

Which represents the value of Point C on the number line?

Answers

Answer:

1

Step-by-step explanation:

}24} Please help me with this question.

Answers

Answer:

Queen

Step-by-step explanation:

This is because only the Queen rules the United Kingdom

Hope this Helps!!! :)

which other expression has the same value as (-14)-8? Explain your reasoning

Answers

Answer:

It would be D. (-14)+(-8)

Step-by-step explanation:

It is D. Because when you add -8 and -14 you would get the answer -22

Hope this helps!

Please help me understand this problem.

Answers

Answer:

[tex]\frac{31}{45}x[/tex]

__________________________________________________________

Step-by-step explanation:

We are given:

3[tex]\frac{1}{5}x[/tex] + 10[tex]\frac{7}{9}x[/tex] - 2[tex]\frac{2}{5}x[/tex] - 10[tex]\frac{8}{9}x[/tex]

Concepts used:

Evaluating Mixed fractions and Adding like terms

Simplifying the Mixed Fractions:

to simplify these mixed fractions, we will multiply the whole number part with the fraction's denominator and add that to the numerator.

The number formed will be given the same denominator as of the fraction part in the number

After simplifying these mixed fraction, we get:

[tex]\frac{16}{5}x + \frac{97}{9}x - \frac{12}{5}x - \frac{98}{9}x[/tex]

Adding and Subtracting the like terms:

to simplify our calculations, we will pair the numbers with the same denominator

[tex](\frac{16}{5}x - \frac{12}{5}x) + (\frac{97}{9}x - \frac{98}{9}x)[/tex]

Simplifying the terms in the brackets

[tex]\frac{4}{5}x - \frac{1}{9}x[/tex]

Taking the LCM and simplifying

[tex]\frac{36}{45}x - \frac{5}{45}x[/tex]

Since the denominators are equal, the numerators can now be subtracted

[tex]\frac{31}{45}x[/tex]

Therefore, simplifying the given series of number gives us 31x/45

y + 12 = -30
Please help

Answers

What do you want help with? You didn't ask a question...

.......................Y= -42...................

PLEASE HELP, ILL GIVE YOU 15

Answers

Answer:

2700

Step-by-step explanation:

9x20x15= 2700

The perimeter of the trapezoid-shaped window frame is 23.59 feet. Write and solve an equation to find the unknown side length x (in
feet).

Answers

Answer:

[tex] 5.62 + 3.65 + 5.62 + x = 23.59 [/tex]

[tex] x = 8.7 ft [/tex]

Step-by-step explanation:

Perimeter of the trapezoid-shaped window = sum of all the sides of the window frame

Thus, the equation to find the unknown side length, x, would be:

✔️[tex] 5.62 + 3.65 + 5.62 + x = 23.59 [/tex]

Solve for x

[tex] 14.89 + x = 23.59 [/tex]

Subtract 14.89 from each side

[tex] 14.89 + x - 14.89 = 23.59 - 14.89 [/tex]

✔️[tex] x = 8.7 ft [/tex]

If the time is given in months, you must first _____________ by 12.

Answers

Answer:

Multiply

Step-by-step explanation:

I'm assuming you are turning months into years to do so you would multiply the time in months by 12 to get the time in years

What is the value of
26 - 16 / 2 + 3 * 4 =

A. 32
B. 30
C. 6
D. 22

Answers

B) 30

Step-by-step explanation:

i hope this helps :)

Solve the fraction 11/12 + 1/2 + 3/4

Answers

Answer:

2 1/6

Step-by-step explanation:

find common denominator: 12

11/12

1/2=6/12

3/4=9/12

add:

11/12+6/12+9/12=26/12

simplify:

26/12=13/6=2 1/6

hopefully this helps :)

ok so you need to make them all have the same denominator which would be 12. 11/12 + 6/12 + 9/12= 26/12 that would be improper form, mixed for would be 2 2/12 but that isnt simplest for so make it 2 1/6

Simple answer
Mixed Form: 2 1/6
Improper Form: 26/12

round 446,662 to the nearest hundred thousand

Answers

Answer:

400,000

Step-by-step explanation:

446 is the closest to 400 so 400,000

pls mark brainliest

Answer:

400,000 is the correct answer

Step-by-step explanation:

just round the 4.

Complete the steps to find the value of x.
2x
128

Answers

2x = 128

divide 2 with 128 and that will be the answer to x

2 divided by 128 = 64

x=64

The required value of the x in the expression 2x = 128 is x = 64.

Given that,
An expression is given 2x = 128, to determine the simplified value of the x.

What is simplification?

The process in mathematics to operate and interpret the function to make the function or expression simple or more understandable is called simplifying and the process is called simplification.

Here,
The given expression is,
2x = 128
Dividing both the sides by 2
2x / 2 = 128 / 2
x = 64

Thus, the required value of the x in the expression 2x = 128 is x = 64.

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What are two different coin combinations that can equal 30% of a dollar?

Answers

3 dimes, 30 pennies , a quarter and a nickel , a dime and 20 pennies. (just add up to 30)

Jack wants to buy a pair of trousers for $60. When he went to the store he found that the price was marked down by 20%. How much do they cost now?

Answers

The trousers will cost $48.



60 / 100 = 0.6


20% off so that will make it 80% of 60 so you put the two together by doing:


0.6 * 80 = 48

I WILL MARK BRAINIEST
Please help it’s due

Answers

Answer:

m4 = 90 - x

m1 = 90 - x

m5 = 90 + x

Step-by-step explanation:

m4 = 90 - x

m1 = 90 - x

m5 = 180 - (90 - x)

m5 = 90 + x

Please help out , thank you

Answers

Answer:

4

Step-by-step explanation:

According to my knowledge the country that had a government in the 1930s and early 1940s that was autocratic was Germany (4).

The answer is 4 that the answer

Find the slope using the formula.
(9,-5) and (-2,9)

Answers

Answer:

14/-11

Step-by-step explanation:

use the slope formula ( y2-y1/x2-x1)

Answer:[tex]-\frac{14}{11}[/tex]

Step-by-step explanation: Formula (y2-y1)/(x2-x1)

(9+5)/(-2-9) = [tex]-\frac{14}{11}[/tex]

Find the area of each figure.
10 mm
15 mm
B mm
30 mm

Answers

Answer:370mm^3

Step-by-step explanation:

You would first find the area of the whole rectangle without the hole, so (15)(30)=450

Next find the area of the hole, (8)(10)=80

To find the area you must subtract the area of the hole from the rectangle.

450-80=370

State if the triangle is acute, obtuse, or right. ​

Answers

right because there’s a right angle

Answer:

Its a right triangle.

Step-by-step explanation:

a recipe calls for 2/3 cup of milk for 11 cookies. How many cups of milk are needed for 165 cookies​

Answers

Answer:

11 x 15 = 165, so to make 165 cookies, you would need 15 times the milk.

2/3 times 15 = 10

You would need 10 cups of milk to make 165 cookies

The answer is 10 Bc 165 you divide it by 11 it = 15 then 15 time 2/3 is 10

Y'all what it 10/7 divided by 4

Answers

Answer:

.........

Step-by-step explanation:

10/7 x 1/4

10x1/7x4

10/7x4

10/28

5/14

Hope I helped

5/14 is your answer

Aisha has $100 saved from her job. She wants to buy as many charms for her bracelet, at $4 each and earrings at $5 per set, as she can without spending all of her money. The inequality represents her spending, where x is the number of charms and y is the number of sets of earrings. 4x + 5y < 100 SAMSUNG Which ordered pair (x, y) represents a combination of charms and earrings Aisha can buy? A. (16,8) B. (15,8) C. (9, 13) D. (6, 15) E. , (5, 16)​

Answers

Answer:

The answer is D

Step-by-step explanation:

6 times 4 is 24

15 times 5 is 75

75 + 24 = 99

The rest of the answers go over 100

The ordered pair that represents a combination of charms and earrings Aisha can buy is (6,15).

What is inequality?

The relation between two unequal expressions is defined as inequality.

The given inequality is 4x+ 5y <100.

(A) Check the inequality for (16,8):

4(16) + 5(8) < 100

64 + 40 < 100

104 < 100

The inequality is false.

(B) Check the inequality for (15,8):

4(15) + 5(8) < 100

60 + 40 < 100

100 < 100

The inequality is false.

(C) Check the inequality for (9,13):

4(9) + 5(13) < 100

36 + 65 < 100

101 < 100

The inequality is false.

(D) Check the inequality for (6,15):

4(6) + 5(15) < 100

24 + 75 < 100

99 < 100

The inequality is true, hence, (6,15) represents a combination of charms and earrings Aisha can buy.

(E) Check the inequality for (5,16):

4(5) + 15(16) < 100

20 + 240 < 100

260 < 100

The inequality is false.

Hence, the ordered pair that represents a combination of charms and earrings Aisha can buy is (6,15).

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Which is greater: 10cm or 103mm? How much greater?

Answers

Answer:

0.3cm and/or 3mm

Step-by-step explanation:

When converting 10cm to mm you get 100mm and when putting 100mm to 103mm its visible that the 103mm is larger, but by how much? The difference is 0.3cm and/or 3mm.

Every week hector works 20 hours and earns $210.00 he earns a constant amount of money per hour white a equation that can be used to determine the number of hours h hector works given the number of weeks w

Answers

Answer:

to find out how much hector earns a hour we can do

Step-by-step explanation:

210 ÷ 20

I think you missed some writing it doesn't say the whole question. so I'm not really sure^^

Convert 240 meters into hectometer with solution​

Answers

Answer:

Step-by-step explanation:

1 metre = 0.01 hectometre

240 metre = 2.4 hectometre

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