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slega [8]
2 years ago
11

tamara has completed 60% of her practice time for the track meet. If she is expected to practice for 18h, how long has she alrea

dy practiced?
Mathematics
1 answer:
anyanavicka [17]2 years ago
4 0

Answer:

10h and 48min

Step-by-step explanation:

60*18=1080

1080/100=10.8

so 10.8h which means 10 hours and 48 min

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I've been sitting on this problem for 2 hours! AND I STILL DON'T KNOW WHAT THE HECK IT ISSS!!!!
MArishka [77]

Answer:

A

Step-by-step explanation:

Use foil to expand it.

y = 4 (x^2 + 7x - 9x - 63)     Combine the like terms on the right.

y = 4(x^2 - 2x - 63)              Use the distributive property to remove the brackets.

y = 4x^2 - 8x - 4*63            Combine the two multiplied factors on the right.

y = 4x^2 - 8x - 252              4* 63 = 252

The answer is A

7 0
3 years ago
In 2008, golfer Annika Sornestam had a driving accuracy of 71%. That is, on par 4 and par 5 holes, her tee shot landed in the fa
Nady [450]

Answer:

Ok, we know that the driving accuracy is of 71%.

Then the first step is to get a spinner that is enumerated from 1 to 100 (in such way that each number is equispaced)

Now, we can mark a section between numbers 1 and 71. (this regio represents the cases where the shot lands in the fairway) and the unmarked region represents the cases where the shot does not land in the fairway.

Now, for each shot, we can spin our spinner next to a fixed pencil, depending on the section of the spinner that is marked by the pencil when the spinner fully stops, we can guess if the shot landed or not in the fairway.

In this way the shot has the region from 1 to 71 (71%) to land in the fairway

and the region from 72 to 100 to not land in the fairway.

If you want to simulate Sorenstam’s performance in a round of golf where she attempts 15 drives, you need to spin the spinner 15 times, and record the oucomes.

8 0
3 years ago
Two students are asked to come to the board to work a math problem. Each student could work an easy question (E) or a hard quest
Allisa [31]
Top Left: EE
Top Right: EH
Bottem Left: HH
Bottem Right: HE
4 0
3 years ago
one class of 28 students has a ratio of 3 girls to 4 boys. if this ratio holds true for the entire 6th grade of 140 students, ho
Julli [10]

Answer: 105 girls because the ratio from girls to boys is 3:4 and that means that 3/4 are girls so 3/4 times 140 is 105

Step-by-step explanation:

7 0
3 years ago
At an amusement park, Alexa gets a $15 prepaid charge card, and she spends $1.50 for each ride. Write an equation that shows how
Cerrena [4.2K]

Answer:

f(x) = 1.50x - 15

Step-by-step explanation:

Given that:

Worth of prepaid charge card = $15

Cost per ride = $1.50

Amount after each ride :

In solpe - intercept form:

Cost per ride = slope = 1.50

Intercept = $15

Amount left after each ride, f(x)

Number of ride, x

f(x) = 1.50x - 15

7 0
2 years ago
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