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sergiy2304 [10]
2 years ago
6

Multiply. 25.5 × 5.46

Mathematics
2 answers:
Oksana_A [137]2 years ago
7 0

Answer:

139.23

Step-by-step explanation:

ikadub [295]2 years ago
4 0

Answer:

The answer is ... 139.23

Step-by-step explanation:

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Justin runs 7 miles in 60 minutes. At the same rate, how many miles would he run in 24 minutes?
posledela

Answer:

2.8 Miles

Step-by-step explanation:

If 7m is 60mins

How many miles is 24 mins

solution:

take unknown miles to be 'x'

7m=60mins

Xm=24mins

cross multiply

7×24/60=2.8m

x=2.8miles

4 0
2 years ago
1. On the sixth grade field trip, there are 2 teachers for every
neonofarm [45]

Answer:

Divide 63/9=7

7*2= (the number of teachers) 14

There are 14 teachers for 63 students.

8 0
2 years ago
Read 2 more answers
1..A message in a bottle is floating on top of the ocean in a periodic manner. The time between periods of maximum heights is 26
statuscvo [17]

Answer:

See below for answers and explanations (along with a graph attached)

Step-by-step explanation:

<u>Part A</u>

The amplitude of a sinusoidal function is half the distance between the maximum and the minimum. It is given to us that the distance from the highest and lowest point is 6 feet, so our amplitude is 6/2 = 3 feet

<u>Part B</u>

The graph's function would be in the form of y=acos(bx+c)+d where a is the amplitude, \frac{2\pi}{b} is the period, -\frac{c}{b} is the phase/horizontal shift, and d is the average/midline.

We already know our amplitude of a=3 from part A.

Since our period is given to us as 26 seconds, then we can use the equation \frac{2\pi}{b}=26 to find b, which happens to be b=\frac{\pi}{13}.

Since the cosine function starts at its maximum and we want it to start at the average where the bottle travels up, we would need to use the cofunction identity sin(x)=cos(x-\frac{\pi}{2}) which shifts the cosine graph \frac{\pi}{2} units to the right. This means that c=-\frac{\pi}{2}, making our phase shift -\frac{c}{b}=-\frac{-\frac{\pi}{2}}{\frac{\pi}{13}}=6.5, or 6.5 feet to the right

Our average/midline would be d=12 as given as the average height by the problem.

Therefore, the function is f(x)=3cos(\frac{\pi}{13}x-\frac{\pi}{2})+12

<u>Part C</u>

Using our determined function from Part B, by looking at its graph, we see that the bottle will reach its lowest height of 9 feet after 19.5 seconds (see attached graph).

5 0
2 years ago
Read 2 more answers
Of the students in Jill's grade, 41 students have a pet and the other 7 students do not. What is the ratio of the number of stud
quester [9]

Answer:

The answer is 7 : 48.

Step-by-step explanation:

First, you can to calculate how many students are there in Jill's grade by adding the number of students who have pet with the students without pets :

total = 41 + 7 = 48

Next, you have to find the ratio of students without pets to total students :

7 : 48

8 0
3 years ago
Read 2 more answers
Set up the equation and solve.<br> Twice a number increased by 12 is 20. What is the number?
ladessa [460]

Answer:

2x+12 = 20

x = 4

Step-by-step explanation:

Twice a number = 2x

increased by 12 = +12

Format:

2x + 12 = 20

Solve

Subtract 12 from both sides

2x + 12 - 12 = 20 - 12

2x = 8

divide both sides by 2

2x/2 = 8/2

x = 4

If my answer is incorrect, pls correct me!

If you like my answer and explanation, mark me as brainliest!

-Chetan K

4 0
3 years ago
Read 2 more answers
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