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olya-2409 [2.1K]
2 years ago
7

Which of the following transformations represents an isometry?

Mathematics
1 answer:
Wewaii [24]2 years ago
3 0

Answer:

C

Step-by-step explanation:

Isometry only includes, rotation, translation, and reflection.

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Weiming, Joyce and Siti divide cookies to sell in a ratio of 5: 12: 9. After Weiming sold 28 cookies, the ratio becomes 1: 8: 6.
Strike441 [17]

Answer:

216 cookies

Step-by-step explanation:

From the question,

Let the total cookies in the first place be x cookies.

Their ratio = 5:12:9

Total  = 5+12+9 = 26.

Weiming share = (5/26)x = 5x/26

If weiming sold 28 cookies

⇒ (5x/26)-28

⇒ (5x-728)/28

Hence Weiming new share = (5x-728)/28 cookies

The new ratio is 1:8:6

The total cookies becomes = x-28

Therefore,

(1/15)(x-28) = (5x-728)/28

(x-28)/15 = (5x-728)/28

Crossmultiply

28(x-28) = 15(5x-728)

28x-784 = 75x-10920

Collect like terms

28x-75x = -10920+784

-47x = -10136

x = -10136/-47

x = 215.7

x ≈ 216 cookies

8 0
3 years ago
josiah is taking his friends to the movies each ticket cost $10, and popcorn is $5 a bag. there is a 3$ service fee for the enti
musickatia [10]
X = total amount paid
y = number of tickets
z = number of bags

your equation:
x = 10y + 5z + 3

hope this helps
4 0
3 years ago
Read 2 more answers
Write the standard equation of a circle with center (-3, 4) (-3, 4) and radius 1.​
Neporo4naja [7]

Answer:

The answer is (x+3)^2+(y-4)^2=1

Step-by-step explanation:

The equation is (x-a)^2+(y-b)^2=r^2

In this equation, a and b are the coordinates of a center, and r is radius

Substituting given values, we obtain our answer.

3 0
3 years ago
Factor: 42x + 14 *<br> Please help me with this question
Deffense [45]

Answer:

x = 0.3333333333

Step-by-step explanation:

Simplifying

42x = 14

Solving

42x = 14

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Divide each side by '42'.

x = 0.3333333333

Simplifying

x = 0.3333333333

8 0
3 years ago
Identify the slope and the y-intercept of the following equation: y = 5x + 1.
nlexa [21]

Answer:

Step-by-step explanation:

The slope is going to be the one that has the X by it so your slope is going to be 5x. Then your y intercept is going to be the number behind the slope so the y intercept is positive 1.

5 0
3 years ago
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