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Fed [463]
3 years ago
8

The results of a survey indicate 50% of seventh-graders watch at least one movie

Mathematics
2 answers:
Kay [80]3 years ago
7 0

Answer:

25 students

Step-by-step explanation:

50% of 50 is 25  

50/2 = 25

sergey [27]3 years ago
7 0

Answer:25

Step-by-step explanation:

The total number of children is 50

So 50%of50children is

50/100×50=2500/100

=25

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It's -25 in Alaska and 75 in Florida. How much hotter is it in Florida than in Alaska?
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3 years ago
Read 2 more answers
Claire is cycling at a speed of 12 miles per hour. Han is cycling at a speed of 8 miles per hour. If they start at the same posi
larisa [96]

Answer:

45 minutes is 3/4 of an hour, so find 3/4 of 12.  

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3 years ago
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What is the solution of x-7= ir+14,
weqwewe [10]

Answer:

x=12

Step-by-step explanation:

put the x at one side and the numbers ar the other

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3 0
3 years ago
if the equation x^2 +(k+2)x+2k=0 has equal roots,then the value of k is .....a.2 b.-2 c 1/2 d.none ​
blsea [12.9K]

Answer:

k=2

Problem:

if the equation x^2 +(k+2)x+2k=0 has equal roots,then the value of k is ..

Step-by-step explanation:

Since the coefficient of x^2 is 1, we can use this identity to aid us: x^2+bx+(b/2)^2=(x+b/2)^2.

So we want the following:

[(k+2)/2]^2=2k

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Multiply both sides by 4:

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Subtract 8k on both sides:

k^2-4k+4=0

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(k-2)^2=0

Since zero squared is zero, we want k-2=0.

Adding both sides by 2 gives k=2.

8 0
3 years ago
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