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marysya [2.9K]
3 years ago
13

I got confused I add or multiply 30 3 times? Or am i wrong

Mathematics
2 answers:
emmainna [20.7K]3 years ago
7 0

Answer:

30=3x

so divide 30 by 3 and you'll get x

kipiarov [429]3 years ago
3 0

Answer:

10

Step-by-step explanation:

You equate. The two angles are equal. The figure is called vertically opposite.

Vertically opposite angles are equal.

3x = 30                          Now you divide by 3

3x/3 = 30/3

x = 10

And 10 is your answer.

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The parent volunteers made 120 snow cones in 5 hours. The student council made 100 snow cones in 4 hours. Who made more snow con
marysya [2.9K]
The parent volunteers:
120 snow cones ... 5 hours
x snow cones = ? ... 1 hour

120 * 1 = 5 * x
120 = 5 * x   /5
x = 120 / 5 = 24 snow cones

The student council:
100 snow cones ... 4 hours
y snow cones = ? ... 1 hour

100 * 1 = 4 * y
100 = 4 * y   /4
y = 100 / 4 = 25 snow cones

Result: The student council made more snow cones per hour (25 > 24).
8 0
3 years ago
Work out the circumference of this circle give your answer in terms of pi and state it’s units the diameter is 14cm
zalisa [80]

Answer:14pi and 43.98 (2dp)

Step-by-step explanation:

circumference =2xpixr

radius = 14 divide by2 =7

2x pi x 7=14pi

14pi =43.98229715

=43.98 (2dp)

4 0
3 years ago
Solve the following quadratic equation by factoring or Quadratic Formula.
s344n2d4d5 [400]

Answer:

A.

Step-by-step explanation:

x2 - 3x - 10. = 0

x2 + 2x - 5x - 10 = 0

(x2 + 2x) (-5x - 10) = 0

x (x + 2) - 5 (x + 2) = 0

(x - 5) (x + 2) = 0

x - 5 = 0 x + 2 = 0

x = 5 or x = - 2.

6 0
3 years ago
Read 2 more answers
The average of 11 numbers in a list is 14. If the average of 9 of the numbers in the list is 9, than what is the average of the
liberstina [14]
Total value of 11 numbers
14*11
154

Total value of 9 numbers
9*9
81

Total value of other 2 numbers
154 - 81
73

So average of other 2 numbers
73 / 2
36.5
3 0
3 years ago
For questions 2 z 3. simplify each polynomial <br>2. 3x²+6-2x+5x-4x²+9<br>3. 2x²+6x-7x+8-3x²+1​
Mars2501 [29]

Answer:

2. -x^{2} +3x+15

3. -x^{2} -x+9

Step-by-step explanation:

We add like terms together to simplify

2.  3x²-4x²= -x²     -2x+5x= 3x  6+9= 15  all equal to -x²+3x+15

3.  2x²-3x²= -x²      6x-7x= -x    8+1=9      all equal to -x²-x+9

7 0
2 years ago
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