these two polygons are similar​

Answer:

54

Step-by-step explanation:

You can do 4 times 12 to get the first triangle as 48.

Then you can use the Pythagorean Theorem to get the side length of the bottom one between 4 and 5. c^2=a^2+b^2. 25=16+b^2. 9=b^2, b=3.

(1)

[1]   x + 5y - 4z = -10

[2]   2x - y + 5z = -9

[3]   2x - 10y - 5z = 0

Eliminate x by adding -2[1] to [2], and adding -1[2] to [3]:

-2(x + 5y - 4z) + (2x - y + 5z) = -2(-10) + (-9)

-2x - 10y + 8z + 2x - y + 5z = 20 - 9

[4] -11y + 13z = 11

-(2x - y + 5z) + (2x - 10y - 5z) = -(-9) + 0

-2x + y - 5z + 2x - 10y - 5z = 9

[5]  -9y - 10z = 9

Eliminate y by adding -9[4] to 11[5]:

-9(-11y + 13z) + 11(-9y - 10z) = -9(11) + 11(9)

99y - 117z - 99y - 110z = -99 + 99

-227z = 0

z = 0

Plug this solution into either [4] or [5] and solve for y :

[5] -9y - 10(0) = 9

-9y = 9

y = -1

Plug them both into either of [1], [2], or [3] and solve for x :

[1] x + 5(-1) - 4(0) = -10

x - 5 = -10

x = -5

(2)

[1] 2x - y + z = -4

[2] z = 5

[3] -2x + 3y - z = -10

Substitute [2] into [1] and [3]:

2x - y + 5 = -4

[4] 2x - y = -9

-2x + 3y - 5 = -10

[5] -2x + 3y = -5

Solve [4] for y :

2x - y = -9

2x + 9 = y

Substitute this into [5] and solve for x :

-2x + 3(2x + 9) = -5

-2x + 6x + 27 = -5

4x = -32

x = -8

Plug this into either [4] or [5] to solve for y :

[4] 2(-8) - y = -9

-16 - y = -9

y = -5

Answer:

10%

Step-by-step explanation:

this is because the decrease in price is $41 and if you divide by the original amount its 10%

Answer: x = 16   and the measure of angle is 59°.

Step-by-step explanation:

Complementary angles add up to 90 degrees. Meaning that, if you  add the two angles together and add them to equal 90 you can solve for x.

(x + 15) + (3x + 11) = 90       First combine like terms.

4x + 26 = 90   Subtract 26 from both sides.

    -26     -26

4x = 64

x = 16    

If x is equal to 16, then we can find the measure of angle N by inputting the value of x into the expression for the measure of angle N.

m∠N = 3(16) + 11  

m∠N = 48 + 11

m∠N = 59

Answer: m angle ABC = 44

m angle CAG = 54

Step-by-step explanation:

Answer:

f(2) = -6

General Formulas and Concepts:

Order of Operations: BPEMDAS

Substitution and Evaluation

Step-by-step explanation:

Step 1: Define

f(x) = -2x² + 4x - 6

f(2) is x = 2

Step 2: Solve

Answer:

600 calories

Step-by-step explanation:

120 (# of minutes in 2 hours) divided by 40 is 3, so multiply 200 by 3 and you get 600

Answer:

600 calories burnt

Step-by-step explanation:

What I started with is 200/40=5 calories burned per min

60 plus 60=120

5x120=600

Hope this helps

Answer:

25

Step-by-step explanation:

Answer:

x = 65

Step-by-step explanation:

Corresponding angles always equal each other;

2x + 5 = 135

Subtract 5 from both sides;

2x = 130

Divide both sides by 2;

x = 65

Answer:

8.3

Step-by-step explanation:

just move the decimal in 83 over one digit since your already just dividing by 10

Answer:

268

Step-by-step explanation:

We need to multiply and add:

47 tables of 4 means there are a total of 47 * 4 = 188 people at these tables.

16 tables of 5 means there are a total of 16 * 5 = 80 people at these tables.

Add them up to get: 188 + 80 = 268 customers total.

Answer:

9c2/a4

Step-by-step explanation:

To Clarify 9c is squared and a is held to the fourth power

Answer:

True

Step-by-step explanation:

you can't really explain it but I know it is a rational answer

Answer:

y= −1/2x+ 1/2

Step-by-step explanation:

Find the negative reciprocal of the slope of the original line and use the point-slope formula

y-y1=m(x-x1) to find the line perpendicular to y=2x−3.

Answer:

2 2/5 hours

Step-by-step explanation:

If Marcus takes 4/5 an hour to paint 1/3 of the room, then you have to multiply 4/5 times 3 for every 1/3 of the room.

Sorry if this is hard to understand, this is my first time answering.

Answer:

5/12

Step-by-step explanation:

I think

Answer:

A and D

Step-by-step explanation:

Got it right on Edge hope this helped!

Answer:

A&B

Step-by-step explanation:

its right on edg

Answer:

C. Box c

Step-by-step explanation:

Took this assignment the other day

Hope this helped

Answer:

C

Step-by-step explanation:

box c

Answer:

it is C

Step-by-step explanation:

Answer:

20 pounds

Step-by-step explanation:

80/20 =4

5x4=20

Answer:

-219

Step-by-step explanation:

I counted it lol :o

Answer:

7000 :)

Step-by-step explanation:

The nearest thousand to 7412 is 7000.

Answer: 7000

Step-by-step explanation: When you round 7412 to the nearest thousand you should get 7000.

Answer:

x=35, y=18

Step-by-step explanation:

the triangles are similar so they are in proportion

x/14=45/y= 40/16

[tex]\frac{x}{14} =\frac{40}{16}[/tex]  find x

[tex]x= \frac{14*40}{16} = 35[/tex]

[tex]\frac{45}{y} =\frac{40}{16}[/tex]  find y

[tex]y= \frac{45*16}{40} =18[/tex]

Answer:

For WeDeliver= $224

For GoParcels = $56

Step-by-step explanation:

Since we are told his parcel is a cuboid with dimensions 10cm, 20cm, and 40 cm, it means the parcel consists of 4 edges of 10 cm, 4 edges of 20 cm, and 4 edges of 40 cm.

For WeDeliver, the Total Cost is:

Sum, in cm, of the dimensions x 0.80, which is, (10cm *4) + (20cm *4) + (40cm *4)  = 280cm x 0.80 = $224. While

For GoParcels, the Total Cost is:

Total area, in [tex]cm^{2}[/tex], of all 6 faces, x .02

Remember that a cuboid has six (6) faces or sides, so the total area would be gotten by taking note of the length of each visible side of the parcel and then multiplying to get the other side after which we sum after doing so we get:

Total area = [tex]2,800^{cm2}[/tex] * 0.02 = $56

Answer:

Step-by-step explanation:

224 56

Answer:

X^2-x- 8/x+4

Step-by-step explanation:

X+4 becomes a negative 4

Then multiply -4 by the first number which is 1 so -4×1 is -4. Then subtract -4 by the second number 3. This gives you -1 so multiply that by 4 which is -4. Then subtract 4 from the third number -4. So that'll give you -8. Then add an x-value to every number except the very last number as that number will be you remainder.

-5

Slope: rise/run

rise/run: y/x

it goes down 5 and moves to the right once that means it's -5/1 or -5.

Answer:

The answer is -5/1 or -5

Step-by-step explanation:

The value of the variable x will be 2. Then the radius of the circle will be 5.

Let r be the radius of the circle. Then the area of the circle will be

A = πr² square units

The radius of the circle is x + 3. And the area of the circle is 25π. Then the equation will be

25π = π(x + 3)²

(x + 3)² = 25

x + 3 = 5

x = 5 - 3

x = 2

Then the radius will be

r = x + 3 = 2 + 3 = 5

The value of the variable x will be 2. Then the radius of the circle will be 5.

More about the area of a circle link is given below.

https://brainly.com/question/11952845

#SPJ2

Answer:

If you owe your friend 10 dollars that would be -10 on a number line and then you borrow 5 dollars which means you owe that money too and you would continue to move left on the number line 5 spaces.

Step-by-step explanation:

Answer:

b=a √3

Step-by-step explanation: