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irinina [24]
2 years ago
8

I need help with this stupid question, my teacher got me confused when he kept talking about different things!

Mathematics
1 answer:
Art [367]2 years ago
6 0

Answer:

2 5/8

Step-by-step explanation:

1 3/4 + 7/8

add the fractions together

look for the lcm bwt 4 and 8

1 6 + 7

____

8

= 13/8 = 1 5/8

1 + 1 5/8

= 2 5/8

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In 30 minutes, a television station plays 8.5 minutes of commercials. The equation m + 8.5= 30 gives the length m in minutes of
zubka84 [21]
The solution to the equation would be 21.5

Why?

If you do the equation backwards

30 - 8.5 = x

You would get 21.5
You can plug it into the first equation to check!

:)


8 0
3 years ago
Read 2 more answers
What is 9-(30) please help
Murrr4er [49]
21 and download math papa
6 0
3 years ago
3. "A boat travels 160 miles in 5 hours. What is the
8090 [49]

Answer:

3. = 32 4. = 54 min

Step-by-step explanation:

4 0
2 years ago
Arlene buys a phone case and charging cord for 15% off. The original cost of the phone case is $18. Her total discount is $4.20.
mel-nik [20]

Answer: $10

Step-by-step explanation:

Assume the price of the phone case is x.

Assume the price of the charging cord is y.

Discounted price for phone case :  15% * x

= 0.15x

Discounted price for charging cord = 0.15y

Expression is therefore:

0.15x + 0.15y = 4.20

0.15 * 18 + 0.15y = 4.20

2.7 + 0.15y = 4.20

0.15y = 4.2 - 2.7

y = 1.5/0.15

y = $10

5 0
3 years ago
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Does anyone know how to solve this?
horsena [70]

Answer:

x=360

Step-by-step explanation:

The inscribed angles theorem states that when given a circle, with an angle that has its vertex at the center of the circle, the measure of the angle is congruent to the measure of the arc surrounding it. One can apply this knowledge here by stating the following,

m

Substitute,

x=2\pi

However, this answer is in radians, it is the literal measurement. One must convert into degrees so that the answer fits the format of the question. The conversion rate to switch between radians and degrees is the following,

degree=\frac{\pi}{180}radians

Substitute,

degree=\frac{180}{\pi}(x)\\\\degree=\frac{180}{\pi}(2\pi)\\

Simplify,

degree=\frac{180*(2\pi)}{\pi}\\degree=360

8 0
3 years ago
Read 2 more answers
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