Mathematics High School

-7 2/3 + (-5 1/2) + 8 3/4 =
A.-21 11/12
B.-4 5/12
C. -4 2/4
D. 6 7/12

Answers

Answer 1

Answer: B. -4 5/12

Step-by-step explanation:

Answer 2

Answer:

B

Step-by-step explanation:

Related Questions

What is the length of diagonal BD?

Answers

Answer: My answer would be 7.6

Step-by-step explanation: Hope this is correct.

The diagram shows a wedge in the shape of a prism angle BCF is a right angle A string runs diagonally across the wedge from Ato F Calculate the length A F Give your answer correct to 3 significant figures

Answers

Answer:

19.3 cm

Step-by-step explanation:

Use Pythagorean theorem to calculate:

BF = √11² + 5² = √121+25 = √146

Same method for FA, the diagonal of rectangle ABFE

FA = √15² + 146 = √225+146 = √371 = 19.3 cm rounded up to 3 significant digits

Solve.
12 1 / 2 - (- 4 1/2) =

Answers

Answer:

17

Step-by-step explanation:

Answer:

The answer is 17

-5/8+w=5/8
Solve thank you !

Answers

Answer:

Hey:D

Step-by-step explanation:

w=5_4    5 ontop 4 in the bottom

Answer:

w=5/4

Step-by-step explanation:

Right triangle ABC is similar to right triangle DEF. If the side lengths for triangle ABC are 15, 20, 25, respectively, which values could represent the side lengths of triangle DEF

Answers

Answer:

[tex]A = 15[/tex]   [tex]B = 20[/tex]   [tex]C = 25[/tex]

[tex]D = 30[/tex]   [tex]E = 40[/tex]   [tex]F = 50[/tex]

[tex]D = 3[/tex]    [tex]E = 4[/tex]     [tex]F = 5[/tex]

Step-by-step explanation:

Given

Similar Triangles: ABC and DEF

[tex]A = 15[/tex]

[tex]B = 20[/tex]

[tex]C = 25[/tex]

Required

Determine the sides of DEF

No options were given, so I will solve on a general terms.

Since both triangles are similar, then the following relationship exists.

DEF = ABC * n

i.e.

[tex]D = A * n[/tex]    [tex]E = B * n[/tex]     [tex]F = C * n[/tex]

Where

[tex]n = Scale\ Factor[/tex]

Assume n = 2.

So, we have:

[tex]D = A * n[/tex]    

[tex]D =15 *2[/tex]

[tex]D = 30[/tex]

[tex]E = B * n[/tex]    

[tex]E = 20 * 2[/tex]

[tex]E = 40[/tex]

[tex]F = C * n[/tex]

[tex]F = 25 * 2[/tex]

[tex]F = 50[/tex]

Assume [tex]n = \frac{1}{5}.[/tex]

So, we have:

[tex]D = A * n[/tex]    

[tex]D =15 *\frac{1}{5}[/tex]

[tex]D = 3[/tex]

[tex]E = B * n[/tex]    

[tex]E = 20 * \frac{1}{5}[/tex]

[tex]E = 4[/tex]

[tex]F = C * n[/tex]

[tex]F = 25 * \frac{1}{5}[/tex]

[tex]F = 5[/tex]

So, the possible sides are:

[tex]A = 15[/tex]   [tex]B = 20[/tex]   [tex]C = 25[/tex]

[tex]D = 30[/tex]   [tex]E = 40[/tex]   [tex]F = 50[/tex]

[tex]D = 3[/tex]    [tex]E = 4[/tex]     [tex]F = 5[/tex]

Solve for h.
h/10 + 5 = 25
so what’s h ??

Answers

Answer:

h=200

Step-by-step explanation:

h/10+5=25

h/10=20

h=200

h/10 + 5 = 25

Subtract 5 from each side to get h/10 alone.

h/10 + 5 - 5 = 25 - 5

h/10 = 20

Multiply both sides by 10 to get h alone.

h/10 • 10 = 20 • 10

h = 200

h = 200. I hope this helps!

Which number can be used as a common denominator for the fractions 1/4 and 5/6? Check all that apply.

[] 2

[] 6

[] 12

[] 16

[] 24​

Answers

You could either use 12 or 24.

Whats the equation and slope Brainlyest to whoever gets right + 20 PTS

Answers

Answer:

Equation:     y = 1/5x - 2

Slope (m):    1/5

The graph of the line equation y = 1/5x - 2 is also attached below.

Step-by-step explanation:

The slope-intercept form of the line equation

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

where

m is the slopeb is the y-intercept

Given the ordered pairs

(5, -1)(-5, -3)

Finding the slope between the points (5, -1) and (-5, -3)

[tex]\mathrm{Slope}=\frac{y_2-y_1}{x_2-x_1}[/tex]

[tex]\left(x_1,\:y_1\right)=\left(5,\:-1\right),\:\left(x_2,\:y_2\right)=\left(-5,\:-3\right)[/tex]

[tex]m=\frac{-3-\left(-1\right)}{-5-5}[/tex]

Refine

[tex]m=\frac{1}{5}[/tex]

Thus, the slope (m) = 1/5

Also given that the y-intercept b = -2

Now, substituting m = 1/5 and y-intercept b = -2 in the slope-intercept form

y = mx+b

y = 1/5x + (-2)

y = 1/5x - 2

Therefore, the equation of the line is:

y = 1/5x - 2

The graph of the line equation y = 1/5x - 2 is also attached below.

Becky buys a shirt for $25, a pair of pants for $32, and a new pair of shoes for $48. She has a 20% coupon off her total. How much is the discount?

Answers

your answer should be $84

A rectangular dining room has a floor area of 322 square feet. If the length of the room is 23
feet, what is the perimeter?

Answers

The perimeter is 74 ft


Answer:

The answer is 173.22

Step-by-step explanation:

how do i solve this?

Answers

Answer: this is hard I hate math sorry

Step-by-step explanation:

:(

what is a triangle that can measure 8 inches, 8 inches, and 3 inches

Answers

Isosceles. An isosceles triangle is one with two matching side lengths.

Answer:

We can form an isosceles triangle by using the given measures.

Step-by-step explanation:

Hope this helps!! :)

Solve the system using substitution.
2x = 5y + 14
x = 5y

Answers

Answer:

y = 2.8x = 14

Step-by-step explanation:

To solve an equation, we can only have one variable. In this case, we are given the system 2x = 5y + 14. However, we are given the value of x in terms of y. We can substitute 10y in for 2x and solve.

10y = 5y + 14

First, we need to get all the variables on one side of the equation, so we subtract 5y.

5y = 14

Divide by 5

y = 14/5 or 2 4/5 or 2.8

Now for the x part.

2x = x + 14

Subtract 1x

x = 14

Now we check our answer.

2(14) = 5(2.8) + 14

28 = 14 + 14

28 = 28

Because 28 equals 28, our solutions are correct.


The number of students in a chess club decreased from 45 to 17. What is the percent decrease? Round
your answer to the nearest percent.
The percent decrease is
1%.

Answers

Answer:

original price =45

change in price=45-17= 28

precentage decrease = original price/change in price x 100

= 28 /45x 100

= 62.22%

tire rim has a diameter of 15 in. What is the circumference of the tire rim? Use 3.14 for Pi.
23.55 in.
46.10 in.
47.1 in.
94.2 in.

Answers

Answer:

The correct option is C. 47.10 inches

Step-by-step explanation:

Diameter of the tire rim is given to be 15 inches

So, The radius of the tire rim will be 7.5 inches

Now, we need to find the circumference of the tire rim

And, The circumference of the tire rim is given by the formula :

Circumference = 2·π × radius

⇒ Circumference of the tire rim = 2 × 3.14 × 7.5

⇒ Circumference of the tire rim = 47.1 inches

Therefore, The correct option is C. 47.10 inches

Need help will give brainliest

Answers

The answer is 3.5 can I have a brainliest now?

Answer:

3.5

Step-by-step explanation:

The constant rate of proportionality, k, is expressed as [tex]k = \frac{y}{x}[/tex], and shows that two quantities are proportional to each other. In this logic, rearranging this in terms of y gives us:

[tex]y = kx[/tex]

Thus we can determine that k is 3.5, in this case.

What product does the model show? (See The Picture) (80 points)

Answers

Answer:

1040

Step-by-step explanation:

(10+4)×(20+6)=14×26

Find the value of x.
2x
80
27
60
X =

Answers

Answer:

x = 18

Step-by-step explanation:

The inner and outer triangles are similar, thus the ratios of corresponding sides are equal, that is

[tex]\frac{80}{80+2x}[/tex] = [tex]\frac{60}{60+27}[/tex] = [tex]\frac{60}{87}[/tex] ( cross- multiply )

60(80 + 2x) = 6960 ← divide both sides by 60

80 + 2x = 116 ( subtract 80 from both sides )

2x = 36 ( divide both sides by 2 )

x = 18

FIRST PERSON TO ANSWER WILL GET BRAINLIEST


Emma bought a sweater that was 20% off. She paid $36 for the sweater, What was the original cost of the sweater?



Please hurry!

Answers

Answer:

$45

Step-by-step explanation:

let's work backwards. We know that it was 20% off, or otherwise 80% of the original cost. Let's represent the original cost with x:

0.8x = 36

Now we solve for x by dividing both sides by 0.8:

x = 45

Thus, the sweater was originally $45

Answer:

i hope i helped i wasnt sure how to answer

Step-by-step explanation:

Grayson just lit a new candle and then let it burn all the way down to nothing. The candle burned at a rate of 0.75 inches per hour and its initial length was 12 inches. Make a table of values and then write an equation for L,L, in terms of t,t, representing the length of the candle remaining unburned, in inches, tt hours after the candle was lit.

Answers

h = 15 - 1.5 t
Step-by-step explanation:
In this example, I made h height.
For this situation, you would use y=mx+b.
If we use this formula, m would be slope. 1.5 is the slope and we are decreasing the size of the candle, which makes -1.5.
x would be t because that's the independent variable.
Since the initial height was 15 inches, 15 would be our starting point or y-intersept, which is b.
So if you put that together, you get h=-1.5t+15.
You can rearrange that to the answer above.

What is the decimal equivalent of 1/5?

Answers

Answer:

.2

Step-by-step explanation:

Answer:

.20

Step-by-step explanation:

1 divided by 5 is .20

Which capital letters in ISOSCELES produce the same letter after being rotated 180° in the plane of the page?

Answers

Answer:

S...

Step-by-step explanation:

Because letter S is the last letter

Pls Help me with this property

Answers

I think it’s distributive property

Hope this helps

Solve for y:-4x+2y=6

Answers

Step-by-step explanation:

just going tell u to use math

way

Answer:   B

Step-by-step explanation:

-4x + 2y = 6    add 4x to both sides

+4x           +4x

 2y = 4x + 6   Divide both sides by 2

 y = 2x + 3

A sample of oxygen gas occupies a volume of 2.50 L at 98.6 kPa pressure. What volume will
it occupy at 164 kPa pressure?
0.5
1.5
3.0
04.5

Answers

3.0 would be the volume
The answer is 3.0 hope that helps

is the relationship between the number of sides of a polygon and the interior angle sum of the polygon proportional

Answers

What do you mean?

(sides - 2) x 180, for the sum of the interior angle

sum of interior/ sides, for the interior angle

3x + 2y = 4
4x + 3y = 7

Answers

Y=0 I think I really don’t know

what's the value of (-8)(2/3)

Answers

Answer:

-5.3

Step-by-step explanation:

I'm not really sure if thats the answer but i try

Answer:

5.33333333333

What is the surface area of a cylinder with base radius 3 and height 8?

Answers

Answer:

A=A(base)+A(lateral)

Step-by-step explanation:

A=A(base)+A(lateral)

A=pi*3^2+2*pi*3*8=179.07

Can y’all plz help me ?

Answers

Answer:

x=-5

Step-by-step explanation

The first box has eight x's and six 1's which means that it would be written as 8x+6

The second box has four x's and fourteen -1's which means that it would be written as 4x-14

You set them equal to one another

8x+6=4x-14

You subtract 4x from both sides

4x+6=-14

Subtract 6 on both sides

4x=-20

Divide 4 on both sides

x=-5

Hope it helps :))

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