In one school year, the students spent a total of 840 hours in their classes. If they have EIGHT different classes, how many hours will
they spend in THREE of those classes?

He owes 200 so the first part of the equation would be the starting value of -200.

You would then multiply 25 by the number of months he has given them money and add that to the -200, this would make the -200 a smaller value every month meaning he owes his parents less money.

The answer is A. y = -200 + 25x

Answer:

Step-by-step explanation:

For every 4 boys there are 5 girls and 9 students at the school. So that means that 49 of the students are boys. 49 of the total number of students is 120 students:

49×?=120

If 49 the number of students is 120, then 14 of 120 is 19 of the total number of students. In other words, 14×120=30 is 19 the total number of students. Then 9 times this amount will give the total number of students:

9×30=270

So there is a total of 270 students at the school. Note that this is equivalent to finding the answer to the division problem:

120÷49=?

We can see all of this very succinctly by using a tape diagram:

Bar_diagram_67722d3e6005449e4fbe5c57eaad4f3c

There are 4 units of boys and 9 units of students. Therefore 4/9 of the students are boys.

4 units = 120

1 unit = 30

9 units = 270

There are 270 students altogether.

Students can multiply the numbers in the first row by 10 to get the second row, and then double that amount to get the third row. Adding the entries in the second and third row gives the fourth row that has the solution.

Alternatively, since 120÷4=30, students can just multiply the numbers in the first row by 30 to get the values in the fourth row.

In every row, we can see that the fraction of the students that are boys is 49.

looking at the last row, we can see that the total number of students will be 4×30+5×30=120+150=270.

Answer:

250 hamburgers were sold on Sunday

Step-by-step explanation:

Let h be the number of hamburgers and c be the number of cheese burgers, then according to given statements, the equations will be:

[tex]h+c = 567\ \ \ \ Eqn\ 1\\c = h+67\ \ \ Eqn\ 2[/tex]

We can use the substitution method to solve the given system of equations.

Putting c= h+67 in equation 1

[tex]h+h+67 = 567\\2h+67 = 567\\2h = 567-67\\2h = 500\\\frac{2h}{2} = \frac{500}{2}\\h = 250[/tex]

Putting h=250 in equation 2

[tex]c = 250+67 = 317[/tex]

Hence,

250 hamburgers were sold on Sunday

Answer:

7/7

Step-by-step explanation:

From the fact that all the squares are shaded, and there's 7 squares, the fraction for this is 7/7.

I hope this helps!

Answer:

Yes

Step-by-step explanation:

The value x = 42 is a solution to the equation 7 = x/6.

Answer:

whats your question i dont get it

Step-by-step explanation:

so then 7=42/6 which is 7=7 so True or Yes

Answer:

21

Step-by-step explanation:

(3÷4)×(28)=

the answer is 21

tell me if its right and i hope it helps

Answer:

The fourth one.

Step-by-step explanation:

I am pretty sure.

Answer:

27

Step-by-step explanation:

3x 1/3 = 1

3x3 = 9

1/3 = 1 person

it takes 3 people to eat a whole pound

1 pound = 3 people

9 pounds would take 27 people

3 x 9 = 27

Answer:

1/4 cup in each box

Step-by-step explanation:

Divide 2 1/2 by 10

Change the the 2 1/1 to an improper fraction which is 5/2

then divide

5            10                                  5           1

--     ÷     ---     Change that to   ---    x    ---   =     1/4  

2             1                                   2           10

Answer:

The areas of the equal sections of boxes formed is 0.25ft^2

Step-by-step explanation:

The question is not complete, as we are not told what to solve for, nevertheless, we can make some findings from the given information

Given data

We are told that the dimension of the paper is 1 ft

So, when the paper is folded twice, one horizontal and one vertical, the dimension of each box will be 0.5 ft

Hence there will be 4 boxes formed

And their areas will be

Area= 0.5*0.5

Area= 0.25ft^2

Answer:

A) 74 inches

Step-by-step explanation:

31 + 18 + 25 = 74 inches total.

Therefore,

74 inches in the perimeter of the triangle.

Answer:

372

Step-by-step explanation:

8x40=320

692-320=372

Answer:

37.92/3=12.64 one galon costs $12.64

Answer:

-70

Step-by-step explanation:

Answer:

i guess it would be -70 if its descending

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

1 1/4 = 1.25

1 4/5 = 1.8

1.8+1.25=3.05=3 1/20

Answer:

C. 3 1/20

Step-by-step explanation:

Answer: 11 : 36

Step-by-step explanation:

Number of total hours he worked would be:

= 25 + 11

= 36 hours

He worked 11 hours on the weekend so the ratio will be:

= 11 : 36

Answer:

-9c-20

Step-by-step explanation:

Simplify the equation by adding/subtracting the like terms (c and numbers)

The expression 9c - 12- 15c - 8 - 3c is equivalent to -9c - 20.

An algebraic expression is consists of variables, numbers with various mathematical operations,

The given expression is,

9c - 12- 15c - 8 - 3c.

Solve the expression for terms c,

9c - 12 - 18c - 8

-9c - 12 -8

Further, solve for constant terms,

-9c - 20

The simplified form of the expression is -9c - 20.

To know more about Algebraic expression on:

https://brainly.com/question/19245500

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Answer:

x=-0.625

Step-by-step explanation:

24x+15=0

     -15   -15

24x=-15

x=-0.625

Answer:

0.8

Step-by-step explanation:

The following data were obtained from the question:

Opposite = 3

Adjacent = 4

Hypothenus = 5

Cos R =?

Cosine R can be obtained by using the cosine ratio as illustrated below:

Cos R = Adjacent / Hypothenus

Cos R = 4/5

Cos R = 0.8

Thus, cosine R is equal to 0.8

Answer:

89.559

Step-by-step explanation:

Answer:

c: triangle ABC is congruent to DEF

Step-by-step explanation:

find the triangle with the same side lengths and angle measurements to the given triangle.

The true statement is DEF= ABC

Thus, option (C) is correct.

As, per the figure Triangle DEF.

<DFE= 23

<DEF = 67

<EDF = 90

ED= 5 unit

EF = 13 unit

DF = 12 unit

Now, to find the congruent triangle to DEF.

Look for the triangle which same angles and sides as triangle DEF.

So, In Triangle ABC.

<CBA= 23

<CBA = 67

<BAC = 90

AB= 5 unit

CB= 13 unit

CA= 12 unit

Therefore, the statement is DEF= ABC

Thus, option (C) is correct.

Learn more about Congruency here:

https://brainly.com/question/31992651

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Answer:

m=2

Step-by-step explanation:

(−2,−3);(3,7)

(x1,y1)=(−2,−3)

(x2,y2)=(3,7)

Use the slope formula:

m=y2−y1/x2−x1

=7 − −3/3 − −2

=10/5

=2

Graph:

(-2,-3) is blue

(3,7) is red

Answer:

m=2

Step-by-step explanation:

m=y2-y1/x2-x1

m= 7-(-3)/3-(-2)

m=7+3/3-(-2)

m=10/3-(-2)

m=10/3+2

m=10/5

m=2

Answer:

1<x<2

Step-by-step explanation:

1<3x-2<4

1+2<3x<4+2

3<3x<6

3/3<3x/3<6/3

1<x<2

Answer:

$1400

Step-by-step explanation:

Assuming that you would pay off the debt now and not wait any longer than to calculate how much more money you need you simply need to subtract the $1000 that you have from the total which is $2400.

$2400 - $1000 = $1400

Finally, we can see that you need an extra $1400 in order to finish paying off the debt. Unless you wait more time and the overall debt owed rises some more.

Answer:

282.7 cm

Step-by-step explanation: One spin is one circumference. That's  π(diameter)= 282.7

Answer:

The equation of line parallel to y = 2x + 7 and passes through (-1, 3) is: [tex]y = 2x+5[/tex]

Step-by-step explanation:

Given equation of line is:

y = 2x + 7

The general form of equation in slope-intercept form is:

[tex]y=mx+b[/tex]

Here m is the slope and b is the y-intercept

Comparing the equations, we get

m = 2

Let m_1 be the slope of line parallel to given line

[tex]m_1 = m\\m_1 = 2[/tex]

The equation of line parallel to given line will be:

[tex]y=m_1x+b[/tex]

Putting the value of slope

[tex]y = 2x+b[/tex]

To find the y-intercept, putting (-1,3) in the equation

[tex]3 = 2(-1)+b\\3 = -2+b\\3+2 = b\\b = 5[/tex]

The equation is:

[tex]y = 2x+5[/tex]

Hence,

The equation of line parallel to y = 2x + 7 and passes through (-1, 3) is: [tex]y = 2x+5[/tex]

Answer: 30

Step-by-step explanation:

It to be 30 but this look hard so I’m not sure