Mathematics High School

There are 7 boxes stacked on the floor in the math department supply closet. Each box has a height of 10 inches or 8 inches. The height of the stack of 7 boxes is 5 feet. How many boxes in the stack are 8 inches in height?

Answers

Answer 1

Answer:

5 of the 7 boxes are 8 inches in height

Step-by-step explanation:

Mathematically;

1 ft = 12 inches

So, 5 ft will measure 5 * 12 = 60 inches

So from what we have ,

We want to combine 8 and 10 inches to give 60 inches total

Let the number of 10 inches be x and the number of 8 inches be y

Mathematically;

x + y = 7 •••••(i)

10x + 8y = 60 ••••(ii)

From equation i, x = 7-y

Put this in equation ii

10(7-y) + 8y = 60

70-10y + 8y = 60

70-60 = 10y-8y

2y = 10

y = 10/2

y = 5

Related Questions

NEED HELP ASAP PLZZZZ!!

Answers

The answer is X = 7

What is the 1000th digit to the right of the decimal point when $\frac{4}{15}$ is expressed as a decimal?

Answers

Answer:

6

Step-by-step explanation:

Aops Question

what x 3 = 120.

2x what = 120

Answers

Answer:

40×3 =120

2×60=120

Step-by-step explanation: have a good day

Help me please ASAP.........

Answers

Answer:

last one is correct

Step-by-step explanation:

Step-by-step explanation:

is the last one

What is the probability that a point chosen at random on the grid will lie in the shaded region?

36%
40%
64%
60%

Answers

Given:

A grid with a shaded region.

To find:

The probability that a point chosen at random on the grid will lie in the shaded region.

Solution:

We have,

Total number of small boxes = 100

Number of blue boxes (shaded region) = 36

Now,

probability that a point chosen at random on the grid will lie in the shaded region is

[tex]\text{Probability}=\dfrac{\text{Number of blue boxes (shaded region)}}{\text{Total number of small boxes}}[/tex]

[tex]\text{Probability}=\dfrac{36}{100}[/tex]

To find the probability in percent, multiply it by 100.

[tex]\text{Probability}\%=\dfrac{36}{100}\times 100[/tex]

[tex]\text{Probability}\%=36\%[/tex]

Therefore, the correct option is A.

Please help I need an answer urgently

Answers

Answer:<4 and <2

Step-by-step explanation:

that should be the answer PLEASE tell me if i am wrong. Thank you.

Answer:

<4 and <2 because in complementary angle the sum of two angles should be equal to 90°

what is 1 times 1 plus 0?

Answers

Answer:

it is one

Step-by-step explanation:

1

hope this helps! :))

Solve the equation.
-2(x + 3) + 5x = -39

Answers

Answer:

x= -11

Step-by-step explanation:

-2x-6+5x=-39

3x-6=-39

3x=-39+6

3x=-33

x= -11

Marly has to get some cavities filled at the dentist. The dentist charges a fee of $35 plus $43 per cavity. If Marly ends up having a bill of $164 and c represents the number of cavities, which of the following equations could be used to find how many cavities Marly had filled?

Answers

Answer: 35+43c=164

Step-by-step explanation:

I worked it out

PLEASE I NEED TO FINISH THIS!!
name:
a chord
a diameter
a radius
a minor arc
and a semi circle of the circle

Answers

DE CHORD
Ab diameter
Cp radius

You deposit $400 in an account. The account earns $18 simple interest in 9 months. What is the annual interest rate

Answers

Use the formula,

I = Prt

P = Principal amount = 400

I  = interest = 18

r = annual rate

t = time in years = 9/12 = 3/4

so,

18 = 400*r*3/4

r =  0.06

so the annual interest rate is 0.06 or 6%.

What is the slope of the line through (-1, 4) and (1, -2)

Answers

Answer:

6/2

Step-by-step explanation:

(y2-y1)/(x2-x1)

4-(-2) over 1-(-1)

4+2 over 1+1

6/2

ANSWER -3. To find the slope you need to use the formula Y2-y1/x2-x1. So that means -2-4/1-(-1). -2-4=-6. 1- -1 = 2. So -6/2 = -3

please help me out! determine the domain on this graph

Answers

Answer:

Domain: 6 </= x < 11

Step-by-step explanation:

Domain refers to the set of possible input values, therefore the domain of a graph consists of all the input values shown on the x-axis.

Remember (this is very important!) :

Closed circles means including that number whereas open circles means not including that number

Domain: 6 </= x < 11

Note: </= means "less than or equal to"

HELPPP!!!!! ASAPPPP!!!!!

Answers

Answer:

C

Step-by-step explanation:

DOMAIN ARE INPUT VALUES WHICH IS LEFT OVAL.

1.What is 1/3 of 3/2 ?
can you guys help me​

Answers

Answer: 1/2

Step-by-step explanation: 1/2 times 3 is the improper fraction 3/2

Answer:

The answer is 1/2

Step-by-step explanation:

1/3 x 3/2

To break it up you multiply the top numbers to get 3

The you'd multiply the bottom numbers to get 6

so your answer is 3/6 which is also equal to 1/2

If your grade is a 93% and you got 20 points taken off your grade, what will your new grade be?

Answers

Your grade would be 73%

Granola cost $2.79 for 16.4 ounces at this rate how much does 25 ounces of granola cost

Answers

Answer:

30

Step-by-step explanation:

16.4 divided by 2.79 is 5

Well its rounded to 5

25 + 5 = 30

Answer - 30

Using the common​ denominator, what is an equivalent fraction to 11/8 ​?

Answers

Answer:

Equivalent fractions to 11/8

11/8, 22/16, 33/24, 44/32, 55/40, 66/48, 77/56, 88/64, 99/72, 110/80

3(-2x+5) +5 = 20
-6x+15+5=20
What is the next step in solving this equation?
A. Distribute
B. Eliminate the coefficient
C. Combine like terms
D. Eliminate the variable

Answers

Answer:

A

Step-by-step explanation:

Can you help me solve this ?

Answers

Answer:

2

Step-by-step explanation:

Answer:

B: 9

Step-by-step explanation:

1/4(c^3 + d^2)

Plug in -4 for C and 10 for d

1/4((-4)^3 + (10)^2)

(-4)^3 = -64

10^2 = 100

1/4(-64 + 100)

-64 + 100 = 36

1/4(36)

= 36/4 = 9

9 is the final answer.

40z + 5 = 45z - 90


Help plz

Answers

Answer:

45z-40z=5+90

5z=95

z=95/5

z=19

PLEASE HELP I AM BEING TIMED!!!
Find the Mesurement of angle 1

Answers

Answer:

41 i think

Step-by-step explanation:

prob not right

What is the length of CD?in this diagram angle ABC ~ angle EDC
A.5
B.3
C.2
D.4

Answers

5
Have a great day! Hope that is the answer.
Answer:
The answer is A. 5

The tape diagram below represents 100% percent.

What percent is represented by the shaded area?

Answers

The shaded area is 75%

PLZZZZ HELP MEEEEE X(

Answers

Answer:

120°

Step-by-step explanation:

From the above question, the polygon is and hexagon, this means it has 6 sides.

Hence: Sums of the interior angles of a polygon = Sum = (n-2) × 180°

n = 6

Hence,

Sum of the interior angles = (6 - 2) × 180°

= 4 × 180°

= 720°

Hence:

The measure of an interior angle of a hexagon =

= Sum of the interior angles/Number of sides of the polygon

= 720°/6

= 120°

Answer:

120

Step-by-step explanation:

Diego has 3 times as many comic books as Han.
How many comic books does Diego have if Han has:
1)6 comic books?
2)N books?
Diego has 27 comic books. How many comic books does Han have?

Answers

Answer:

Han has 9 books

Step-by-step explanation:

If diego has 27 comic books than that means that all you have to do is divide 27/3. then that equals to 9

Using the formula y=ab/2c, express: the variable c in terms of a, b, and y.

Answers

Answer:

aby/2 = c

Step-by-step explanation:

1) ab * y = ab/2c

2) aby/2 = 2c/2

Final answer: aby/2 = c

plzzzzzzzzzzzzzzzzzzzzzzz

Answers

a)x^2+2x

we can factorise this by x

x(x+2)

b)2x^2-6x

we can factorise this by 2x

2x(x-3)

c)15x-10x^3

we can factorise this by 5x

5x(3-2x^2)

d)9x^2+3x^3

this can be factorised by 3x^2

3x^2(3+x)

What is a part to whole ratio?

Answers

Answer:

a ratio that compares a selected number of parts. to the total number of parts in a whole.

Step-by-step explanation:

please can someone help my assignment​

Answers

Answer:

1st ka b and 2nd ka b hoga by simplification

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