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bezimeni [28]
3 years ago
14

Paul has two label-printing machines. Each machine can print 30 labels per minute. On day 1, only the first machine was used, an

d it printed 90 labels. On the following day, the first machine printed for x minutes and the second machine printed for y minutes. Which expression shows the total number of labels printed by both machines during these two days?
120x + 30y
90 + 30x + 30y
30 + 90x + y
90x + 60y
Mathematics
1 answer:
Paraphin [41]3 years ago
4 0
90+30x+30y. This is because the first day, 90 labels were printed, then you will use 30 times x to find how many minutes. This is the same for 30 times y. Youre trying to figure out how many minutes each machine printed for.
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Hatshy [7]

Answer:

The first 4 are correct and the last one is incorrect

Step-by-step explanation:

1. The diameter of the circle is 30.8 m ( Correct )

Radius = 15.4 so diameter is 2 times the radius which is 30.8 m

2. The circumference in terms of π is 30.8 π ( Correct )

Circumference = π × Diameter

Circumference = π × 30.8

Circumference = 30.8 π

3 . The circumference of the circle can be found using 2 × π × 15 . 4 ( Correct )

Circumference = π × Diameter

Circumference = π × 30.8

Circumference = 30.8 π

4 . The approximate circumference of the circle rounded to the nearest tenth is 96.7 m ( Correct )

Circumference = 30.8 π = 96.7610537306

5 . A little more than 6 diameters could be wrapped around the circle

( False )

Circumference = 96.7610537306

Diameter = 30 . 8

96.7610537306 ÷ 30 . 8 = 3.14

5 0
3 years ago
Anyone got an answer for this or advice on how to solve it? :)
Mama L [17]
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5 0
3 years ago
There are 48 students who play the clarinet in a year group of 120.
gregori [183]

Answer:

40%

Step-by-step explanation:

As a Fraction your answer would be \frac{48}{120}.

However we are looking for it as a percentage.

In order to calculate, this you can simply find 10%, and 5% of 120.

10% = 12

5% = 6

48 is divisible by 12, therefore 48 / 12 = 4  

Giving you your answer which is 40%.

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Kruka [31]
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2 years ago
1c. Use your answer to part a to find the roots of the expression. Select all
daser333 [38]
There is 2 solutions:

x = 6

x = -7

Step by step solutions-

Reformatting the input :
Changes made to your input should not affect the solution:

(1): "x2" was replaced by "x^2". 1 more similar replacement(s).

Equation at the end of step 1-
(((x3) - 5x2) - 48x) + 252 = 0

Checking for a perfect cube step 2-
2.1 x3-5x2-48x+252 is not a perfect cube

Trying to factor by pulling out :

2.2 Factoring: x3-5x2-48x+252

Thoughtfully split the expression at hand into groups, each group having two terms :

Group 1: x3-5x2
Group 2: -48x+252

Pull out from each group separately :

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Bad news !! Factoring by pulling out fails :

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