Please answer CORRECTLY , Will mark brainliest !!!!!!

Answer:

The answer is "8".

Step-by-step explanation:

Let the number are a, b, c then value is as follows:

a= 3

b= 5

c= 7

The addition of equation ⇒ a+b+c =15....................(i)

multiply by the value ⇒ 3a + 5b + 7c = 75 ...............(ii)

let b= 15-a-c which  subtract from equation (ii)  

equation:

 ⇒ 3a + 5b + 7c = 75

⇒ 3a + 5(15-a-c) + 7c = 75

⇒ 3a +75-5a-5c+7c = 75

⇒ 3a -5a-5c+7c  = 75-75

⇒ -2a + 2c  = 0

⇒ 2(c-a)  = 0

⇒ (c-a)  = 0

⇒ c=a

if we put value in between 0 to 7 from it satisfies the two equations, with c=a and b = 15 - a - c. So, the correct answer is 8.

Answer:

No

Step-by-step explanation:

The sum of all angles in a triangle is 180°. Because 60 + 60 + 63 = 183 ≠ 180, this is not a triangle.

The sum of all angles in triangle is equeal to 180°

We need to check sum of 60, 60 and 63.

60+60+63=183

183≠180

There is no such triangle

Answer:

y = 0.4x

Step-by-step explanation:

The graph shows that the relation is linear, so we can model this relation with a linear equation:

y = ax + b

To find the value of the parameters, we should get two points from the line and use their coordinates in the equation.

From point (0,0), we have:

0 = a*0 + b

b = 0

From point (2,5), we have:

2 = 5a + b

a = 2/5 = 0.4

So the equation we want is:

y = 0.4x

Answer:

1. (3, 5)

2. (1/2, 4)

Step-by-step explanation:

To find the coordinates of the midpoint of a segment, find the average of the x-coordinates of the endpoints and the average of the y-coordinates of the endpoints.

1. (1, 2) and (5, 8)

x-coordinate of midpoint = (1 + 5)/2 = 6/2 = 3

y-coordinate of midpoint = (2 + 8)/2 = 10/2 = 5

Midpoint: (3, 5)

2. (0, 1) and (1, 7)

x-coordinate of midpoint = (0 + 1)/2 = 1/2

y-coordinate of midpoint = (1 + 7)/2 = 8/2 = 4

Midpoint: (1/2, 4)

Answer:

Density: 1.6g/cm^3

Step-by-step explanation:

Density = mass/volume

Mass: 12.9g

Volume: 8cm^3

12.9/8 = 1.6125

Rounded to tenths place.

1.6 grams/cm^3

Answer:

1.61 g/cm³

Step-by-step explanation:

Density is measured as the mass divided by the volume:

d = m / v, where d is the density, m is the mass, and v is the volume

Here, our mass is 12.9 g and our volume is 8 cm cubed, so plug these in:

d = m / c

d = 12.9 g / 8 cm³

d = 1.6125 ≈ 1.61 g/cm³

The density is 1.61 g/cm³.

Answer:

$12

Step-by-step explanation:

116 is the total

116 minus 24

92 divided by 8

Answer: $11.50

Step-by-step explanation:116 - 24 equals 92

and 92 / 8 equals 11.50

Answer:

The scale factor, r, determines how much bigger or smaller the dilation image will be compared to the preimage. k will always be a value that is greater than 0. Center Point The center point is the center of the dilation. You use the center point to measure the distances to the preimage and the dilation image.    

Step-by-step explanation:

so multiplication

Answer:you get two answers. y+6=-7/4(x+5) or y-1=-7/4(x+5)

Step-by-step explanation:

By the way the 7/4 is negative if you could not tell. You get this answer by finding the slope which is 1- -6/-5- -1 and get -7/4. Then you plug it into the formula y-y1=slope(x-x1). When you plug it in you should get that answer.

The equation of the line that passes through the point (-1, -6) and (-5, 1) is

y = (-7/4)x - 32/4

The equation of a line is given by:

y = mx + c

where m is the slope of the line and c is the y-intercept.

Example:

The slope of the line y = 2x + 3 is 2.

The slope of a line that passes through (1, 2) and (2, 3) is 1.

We have,

The equation of a line is y = mx + c

Now,

(-1, -6) and (-5, 1)

Slope = m

m = (1 + 6) / (-5 + 1)

m = 7/-4

m = -7/4

Now,

(-1, -6) = (x, y)

-6 = (-7/4) x -1 + c

-6 = 7/4 + c

c = -6 - 7/4

c = (-24 - 7) / 4

c = -32/4

The equation of the line is y = (-7/4)x - 32/4

Thus,

The equation of the line is

y = (-7/4)x - 32/4

Learn more about equation of a line here:

https://brainly.com/question/23087740

#SPJ3

Answer: 8

Step-by-step explanation: Speed is distance/time

18/3 = 6 miles per hour running

18/2 = 9 miles per hour biking

3 hour bike = 27 miles

1.50 hour run (0.50 because 30 minutes is half of an hour) = 9 miles

27 + 9/3 + 1.50 = 36/4.5 or 8

Answer: c

Step-by-step explanation: I took the test

Let x = pounds of $12 per pound coffee

then

20-x = pounds of $9 per pound coffee

.

12x + 9(20-x) = 10(20)

12x + 180 - 9x = 200

3x + 180 = 200

3x = 20

x = 20/3

x = 6 and 2/3 pounds of $12 per pound coffee

.

Amount of $9 per pound coffee:

20-x = 20-20/3 = 60/3 - 20/3 = 40/3

or

13 and 1/3 pounds of $9 per pound coffee

Answer:[tex]48\ in.^3[/tex]

Step-by-step explanation:

Given

height of prism [tex]h=12\ in.[/tex]

Area of base [tex]A=4\ in.^2[/tex]

Volume of a rectangular prism

[tex]V=height\times Area[/tex]

[tex]V=12\times 4[/tex]

[tex]V=48\ in.^3[/tex]

So, volume of Prism is [tex]48\ in.^3[/tex]

Answer:

48

Step-by-step explanation:

I'm doing the quiz, hope you guys have a good day.

(*˘︶˘*).｡*♡

Answer:

R=7n+9

Step-by-step explanation:

R=(N*7)+9

R=7n+9

Answer:

7n+9

Step-by-step explanation:

Answer:

B:144

Step-by-step explanation:

18*8=144

Answer:

right angle:-a Pythagorean theorem only works if the triangle is a right angle.

leg:- the two legs of a triangle are needed to complete the equation a²+b²=c²

hypotenuse:- too is needed to complete the equation too.

square root:- is used to simplify the equation at the end.

it was simplified by putting 169=x² in a square root.

Step-by-step explanation:

Answer: 23%

Step-by-step explanation:

Answer:

to the person that answered before me, everyone would really love and explanation, not just a percentage, thanks anyways !!

good day loves !! <3

Step-by-step explanation:

but the answer is 23 %

Answer:

[tex]x = 2[/tex]

Step-by-step explanation:

[tex]2x + 6 = 10 \\ 2x = 10 - 6 \\ 2x = 4 \\ \frac{2x}{2} = \frac{4}{2} \\ x = 2[/tex]

Answer:

x=2

Step-by-step explanation:

2x+6 = 10

Subtract 6 from each side

2x+6-6=10-6

2x= 4

Divide by 2

2x/2 = 4/2

x = 2

Answer:

125in^3

Step-by-step explanation:

All sides of a cube are equal

∴ vol. of cube= side³

Side = 5in

Vol= (5)³=125

∴ Volume = 125in³

When two lines intersect at 90° degrees angle, the lines are perpendicular to each other. Two perpendicular lines, their slope will give a product of -1

i.e. if the first's line slope is 5, then the second line's will be -1 ÷ 5 = -¹/₅

To find the slope of a line, we divide the vertical distance by the horizontal distance. 

We'll use the trial and error method to find the right pairing

Let's start with A(3, 3) and B(12, 6)

Vertical distance = 

Horizontal distance = 

The slope AB = ³/₉ = ¹/₃

We want BC to have a slope -1 ÷ ¹/₃ = -3

Try C(16, -6); check the slope with B(12, 6)

Vertical distance = 

Horizontal distance = 

Slope of BC = -12 ÷ 4 = -3

The slope BC = -3 is the value we want so, tile 1 pair with tile 4

-------------------------------------------------------------------------------------------------------------

Let's do A(-10, 5) and B(12, 16)

Vertical distance = 16 - 5 = 11

Horizontal distance = 12 - -10 = 22

Slope AB = ¹¹/₂₂ = ¹/₂

The perpendicular slope would be -1 ÷ ¹/₂ = -2

Try C(18, 4)  with B(12, 16)

Vertical distance = 16 - 4 = 12

Horizontal distance = 12 - 18 = -6

Slope BC = ¹²/₋₆ = -2

Slope BC and slope AB perpendicular, so tile 3 matches with tile 6

--------------------------------------------------------------------------------------------------------------

Let's try A(12, -14) and B(-16, 21)

Vertical distance = 21 - -14 = 35

Horizontal distance = -16 - 12 = -28

The slope AB = ³⁵/-₂₈ = ⁵/₋₄

We need the perpendicular slope to be -1 ÷ -⁵/₄ = ⁴/₅

Try C(-11, 25)

Vertical distance with B = 25 - 21 = 4

Horizontal distance with B = -11 - -16 = 5

The slope = ⁴/₅

Tile 7 matches tile 8

--------------------------------------------------------------------------------------------------------------

Take A(-12, -19) and B(20, 45)

Vertical distance = 45 - -19 = 64

Horizontal distance = 20 - -12 = 32

Slope AB = ⁶⁴/₃₂ = 2

We need the perpendicular slope to be -1 ÷ 2 = -¹/₂

We have C(6, 52) and checking the slope with B(20, 45)

Vertical distance = 45 - 52 = -7

Horizontal distance = 20 - 6 = 14

The slope is ⁻⁷/₁₄ = -¹/₂

Tile 9 pairs with tile 2

-----------------------------------------------------------------------------------------------------------

Conclusion

Tile 1 ⇒ Tile 4

Tile 3 ⇒ Tile 6

Tile 7 ⇒ Tile 8

Tile 9 ⇒ Tile 2

Tile 5 and Tile 10 do not have pairs

Answer:

The congruence statement tells you that both angle B and angle E are equal, since the triangles are identical!

Step-by-step explanation:

We want to set the equations equal to each other.

2x+31=7x-24

We need to isolate our variable, which is X.

1. Add 24 to both sides.

New Equation: 2x+55=7x

2. Subtract 2x from both sides.

New Equation: 55=5x

3. Divide by 5 from both sides so X is alone!

New Equation: x=11

Enough said! :D

Answer:

4.5 meters

Step-by-step explanation:

you just add them 2.7 + 1.15 = 3.85 + 0.65 + 4.5

Answer:

4.5 m

Step-by-step explanation:

         2.7

       + 1.15

       + 0.65

       = 4.50 meters of ribbon

Hope this helps!

Answer:

5. x = 9

6. x = 12

7. x = 15

8. x = 11

Step-by-step explanation:

5. 90-56 = 34

34 = 3x + 7

27 = 3x

x = 9

6. 90 - 48 = 42

42 = 3x + 6

36 = 3x

x = 12

7. 90 - 47 = 43

43 = 2x + 13

30 = 2x

x= 15

8. 3x + 5x + 2 =  90

8x = 88

x = 11

Answer:

Its A  x - 55 = 39

Step-by-step explanation:

x - 55 = 39

x = 39 + 55

x = 94

This is correct as they sold 39 and kept 55

This means they had 94 to begin with.

I hope this helps ^_^

Answer:

A and D

Step-by-step explanation:

Took test on Edg 2020 and was correct

Answer:

A: Estimate measurements to the nearest 0.05 cm.

D: Start all measurements from the zero (0) mark.

Answer:

25 inches

Step-by-step explanation:

We can use a ratio to solve

width  dr            height  dr

-------------       = ----------

width   act         height act

15 inches         x inches

--------------- = -----------------

3 ft                      5 ft

Using cross products

15*5 = 3x

Divide each side by 3

15*5 /3 = 3x/3

25 =x

Answer:

D and E are the correct answers

Step-by-step explanation:

A is false: The difference between the greatest and least weights is NOT 1/2.

B is false: 2/9 of the packages weigh 5/8 pounds...not 1/4.

C is false: You can clearly see there were more than 12 packages purchased.

D is true: 3/4 = 6/8 and there is 1 package that weighs 6/8 pounds 1 x 3=3 and there is a total of 3 packages that weigh 1 1/8 pounds.

E is true: 1/2=4/8 and the smallest amount is 5/8 pounds which is over 1/2 pound.

~ Please mark me as brainliest :)

Answer:

im so confused

can u make me brainliest Step-by-step explanation:

pleaseeeeeeeeeeeeeeeee

Answer:

What do you need help with?

Step-by-step explanation:

I'm happy to help! (If I can) (Probably not but maybe)