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masya89 [10]
2 years ago
11

Eric practiced piano and guitar for a total of 8 hours this week. he practiced the piano for 1/4 or that time. how many hours di

d Eric practiced the piano this week
Mathematics
2 answers:
AlexFokin [52]2 years ago
5 0
2 because if 1/2 of 8 is 4 and 1/4 of 8 is = to 1/2 of 4, then 1/4 of 8 must be 2.
nika2105 [10]2 years ago
3 0
2 hours because if you count by 2's: 2, 4, 6, 8, you can see that a 1/4 of 8 is 2.
you can also just divide 8 by 2.
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Solve the inequality 4-5<25
SVETLANKA909090 [29]

Answer:

4_5=_1 then -1 is <25 25_1 25<-1

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2 years ago
A candle has been burning for 20 min and is now 25 cm tall. In an hour it will be 10 cm tall. Which equation models the height y
stiv31 [10]

Answer:

(y - 25) = - 0.25(x - 20)

Step-by-step explanation:

Given that :

Height of candle after burning for 20 minutes = 25 cm

Height after burning for 1 hr (60 minutes) = 10 cm

Height (y) in cm of candle x minutes after being lit:

Using the equation :

(y - y1) = m(x - x1)

m = (change in y / change in x)

Change in height within 60 minutes :

Height at 20 minutes = 25cm

Height after an hour = 10

Change in height per hour = (25 - 10) = 15cm

Hence, m = change in height per minute

15cm / 60 = 0.25cm ( - 0.25) (decrease in height)

y1 = 25 ; x1 = 20

(y - y1) = m(x - x1)

(y - 25) = - 0.25(x - 20)

4 0
2 years ago
Help me plz with my hw
inna [77]
Circumference is found with the formula

c = pi × d

d is diameter and we will use 3.14 for pi.

The diameter is the measure across the center of the circle. In the first problem, you are given the radius, so we have to multiply by 2 to get the diameter. Then we can use the formula.

12.4 in × 2 = 24.8 in (that's the diameter)

c = pi × D
c = 3.14 × 24.8
c = 77.872 inches

circumference is 77.872 inches.

Try the other problems on your own. They are just like this one. Just make sure they are giving you the diameter and not the radius. Post if you have problems.
6 0
2 years ago
Caitlin says that AC is the longest segment of fencing becasue it is opposite 68 degrees, the largest angle measure in the figur
Daniel [21]
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6 0
3 years ago
Help pls
maw [93]

Answer:

Step-by-step explanation:

6x+3 -6x =3

6x-6x= 3-3

0 = 0

4 0
3 years ago
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