what can prove that

Answer:

x = 5, Y = 4

Step-by-step explanation:

3x -2y = 7

-3x +9y = 21. (multiple the whole thing by 3 to get the xs to cancel)

7y = 28

y = 4

substitute y to find x

3x - 2(4) = 7

3x -8 = 7

3x = 15

x = 5

Answer:

This is an inverse variation, and the constant of variation is k = 2.

Step-by-step explanation:

Direct variation is something like:

y = k*x

Where k is the constant of variation.

So as x increases also increases y.

Inverse variation is something like:

y = k/x

k is the constant of variation.

In this case, if x increases, y decreases.

Now let's look at the equation:

-10 + 15*x*y = 20

Let's isolate y in one side of the equation:

15*x*y = 20 + 10 = 30

15*x*y = 30

y = 30/(15*x) = (30/15)/x = 2/x

y = 2/x

Then we can conclude that this is an inverse variation, with a constant of variation equal to 2.

Answer:

1428 in³

Step-by-step explanation:

To find the volume of this figure, we will need to use two formulas. The volume of a Rectangular Prism [tex](A=l*w*h)[/tex] and volume of a triangular prism.

[tex](A=\frac{1}{2} (b*h )[/tex]

If we look at the Rectangular Prism, we can find that l = 17, w = 8, and h = 5. Multiply these to find the volume:

17 × 8 × 5 = 680 in³.

Solving for the triangular prism gives us:

A = 1/2 (11 ×  8 × 17)

A = 748.

Add these two volumes to find the volume of the composite figure:

748 + 680 = 1428 in³

Hope this helps!

(THERE ARE NO LINKS STOP REPORTING ME)

Answer:

Two solutions: X = -5 and X = -0.5

Step-by-step explanation:

4x^2 + 22x + 10 = 0 // divide by 2

2x^2 + 11x + 5 = 0

delta = 11^2 - 4 * 2 * 5 = 121 - 40 = 81

sqrt(delta) = 9

x1 = (-11 - 9) / 4 = -5

x2 = (-11 + 9) / 4 = -0.5

Answer:

A. 12 miles

B. 9 miles

C. 2 hours

D. 5 hours

E. Max did not move

F. 9 hours

G. 5 hours

hope this helps :)

Step-by-step explanation:

Answer:

5120

Step-by-step explanation:

5 20 80 320 1280 5120

it multiplies by 4 each time.

Answer:

[tex]\frac{x+xy}{y}[/tex]

Step-by-step explanation:

Given

[tex]\frac{x}{y}[/tex] + x

Multiply x by [tex]\frac{y}{y}[/tex] to create a common denominator

= [tex]\frac{x}{y}[/tex] + x × [tex]\frac{y}{y}[/tex]

= [tex]\frac{x}{y}[/tex] + [tex]\frac{xy}{y}[/tex]

= [tex]\frac{x+xy}{y}[/tex]

Answer: 11

Step-by-step explanation:

Let the 5 numbers be x,x+1,x+2,x+3 and x+4.

Therefore,

x + x+1 + x+2 + x+3 + x+4 = 65

5x + 10 = 65

5x = 65 - 10

5x = 55

x = 55/5

x = 11

Therefore, the 5 numbers are 11, 12, 13, 14 and 15.

The first number is 11

Answer:

Well Ima put the link, hope it works!

jkjk

The answer here is 240 in^3

Step-by-step explanation:

Well You have a triangular prism which all you need is the base. The base cna be found by finding the area of the surface triangle.

Triangle area formula: 1/2(bh)

Well base is 4 height is 10, 4*10=40. 40/2= 20

Now the heighth given or (h) is 12. TO find the volume jsut multiply the height by the base

20*12=240

Plus don’t click the links, their viruses.

Answer:

7

Step-by-step explanation:

7 and y are the same i think

Answer:

AB=3

Step-by-step explanation:

tell me if you want detailed proof

Answer:

1 hour

Step-by-step explanation:

The time it takes to travel to a destination varies inversely as its speed

T= k/S

K= TS

Time= 2 hours

Speed= 40mph

K= 2×40

= 80

Therefore if the average speed changes to 80mph then the new travel time can be calculated as follows

T= 80/80

= 1 hour

Hence the new travel time is 1 hour

Answer:

a) additive property of equality

Step-by-step explanation:

You canceled the addition of 21 to help simplify the equation.

Answer:

D) [tex]6+2\sqrt{6}[/tex]

Step-by-step explanation:

[tex]2\sqrt{3} *(\sqrt{2} +\sqrt{3} )\\\\6+2\sqrt{6}[/tex]

Answer:

B. They must bisect each other

Step-by-step explanation:

Found the answer on quizziz

Answer: C. 132 inches

Step-by-step explanation: Find the radius- 42/2=21 then use the formula C=2πR

Step-by-step explanation:

a e I o u y are all vowels if that helps

Using diagonals from a common vertex, the maximum number of triangles that will be formed is 5 triangles.

The given polygon is irregular heptagon (7 unequal sides).

The given polygon is irregular and the maximum number of triangles that will be Formed is explained as follows;

Alternatively, we can use the following formula;

number of triangles formed = 7 - 2 = 5 triangles

Thus, using diagonals from a common vertex, the maximum number of triangles that will be formed is 5 triangles.

Learn more here:https://brainly.com/question/3700915

Answer:

x = 80 degrees

Step-by-step explanation:

it says right there

9514 1404 393

Answer:

  x = 80°

Step-by-step explanation:

The measure of an arc is the same as the measure of the central angle it subtends.

  x = 80°

Answer:

Ryan has 5 crisps

Step-by-step explanation:

If ben has 7 times more than ryan

therfore 35/7= ryan crisps

hence ryan has 5 crisps

Mark as brainliest

Answer:

(2,1)

Step-by-step explanation:

Answer:

Given vertices:

Plot the points.

We see the diagonals are:

The midpoint of any diagonal is the intersection of the diagonals.

Use midpoint formula to find the coordinates:

The point is (2, 1)

Answer:

Graph E

You're welcome.

Answer:

1.

(x+2)/x=20/12

(x+2)/x=5/3

doing crisscrossed multiplication

3x+6=5x

5x-3x=6

x=6/2=3

:.

x=3

x+2=3+2=5

Answer:

7 + 10 = 17

Step-by-step explanation:

Hey there!

m + n

= 7 + 10

= 10 + 7

= 17

Therefore, your answer is: 17

Good luck on your assignment & enjoy your day!

~Amphitrite1040:)

Answer:

m<A = 35

m<B = 55

Step-by-step explanation:

Complementary angles mean the 2 angles add up to 90 so:

y - 16 + y + 4 = 90

2y - 12 = 90

2y = 102

y = 51

m<A:

y - 16

51 - 16

35

m<B:

y + 4

51 + 4

55

Answer:3rd answer down (top to bottom)

Step-by-step explanation: c=dπ so

c=96π

c=96*3.14=301.4

so 3rd one down is the answer!

Hope this helps!

Answer:

c

Step-by-step explanation:

because its true

Answer:

13

Step-by-step explanation:

f(2) = 2² = 4

g(4) = 3(4) + 1 which is 13

Answer:

125°

Step-by-step explanation:

......ur welcome.........