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lord [1]
3 years ago
13

How many lines of symmetry does a circle have? What point do all lines of symmetry for a given circle have in common?

Mathematics
1 answer:
Alina [70]3 years ago
4 0
A circle has infinit lines of symmetry. They pass through the centre of the circle and are the circle's diameter. Hope this helps! (:
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Two​ trains, Train A and Train​ B, weigh a total of 300 tons. Train A is heavier than Train B. The difference of their weights i
eduard

Answer:

Train A = 214

Train B = 86

Step-by-step explanation:

a + b = 300

a - b = 128

a + b = 300

a = 128 + b

(128 + b) + b = 300

128 + b + b = 300

128 + 2b = 300

2b = 300 - 128

2b = 172

b = 172 ÷ 2

b = 86

a = 128 + b

a = 128 + (86)

a = 214

7 0
2 years ago
What is the ratio of purple cylinders to total cylinders, there are 7 purple and 1 yellow.
Dominik [7]

Answer:

7:8

Step-by-step explanation:

There are 7 purple cylinders. There are 8 total cylinders (7 purple and 1 yellow). So the ratio is 7:8

3 0
3 years ago
Solve the equation with quadratic formula<br> y^2+3y-10=0
neonofarm [45]

Answer:

y = 2 and y = -5

Step-by-step explanation:

Because the coefficient is not greater than 1, you can simply solve the problem without the quadratic formula.

By using the "x" method, you must figure out what multiplies to give you -10, and adds to give you 3

So, you find your values as 5 and -2. You then set these values equal to zero in terms of Y. As so---- (y+5)=0 and (y-2)=0

Then, you solve out to get your answer! Y is equal to -5 and 2

6 0
3 years ago
11x = 57 pls tell i will give extra points for correct answer
scZoUnD [109]

Answer:

x=5 2/11

Step-by-step explanation:

its either 5 2/11 or 57/11

6 0
2 years ago
Read 2 more answers
Freddy’s savings account went from $520 to $321 after he purchased a new bike. What was the percent decrease?
Vinil7 [7]

Step-by-step explanation:

The bike cost $199 to get $199 you do a number line then label 520 then at the end label 321 so then you do -20 then -100 then -50 then -20 then -9. so now you add them up 20+100+50+20+9 which equals =199

so bike cost $199

then 520%×199= 1034.8

or 520%×321=1669.2

so the  percentage is 1669.2 or 1034.8 probably 1669.2 but they bot count.

5 0
2 years ago
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