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Whitepunk [10]
3 years ago
14

I need help/answer please

Mathematics
1 answer:
Levart [38]3 years ago
5 0

Answer:FREEEEEEEEEEEEEEEEEEEEEE

Step-by-step explanation:

YASSSS FREEEEE POINTS

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James knows that when he walks, he takes about 120 steps per minute and that each step is 2.75 feet long. Which calculation is m
mafiozo [28]
Speed=120step/min=720step/h
Distance=720step/h×2.75feet/step=1980feet/h=0.375miles/h
So the answer is: he can walking 0.375miles per hour

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3 years ago
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3 years ago
Simplify the expression by using a double-angle formula.<br> cos-39°– sin²39
AVprozaik [17]

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cos 78⁰.

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Use cos 2A = cos^2 A - sin^2 A

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5 0
3 years ago
how many numbers between 650 and 780 leave remainders of 4 and 6 when divided by 7 and 11 respectively? pls help lol im desperat
Tanya [424]

Answer:

18 numbers between 650 and 780 leave remainders of 4 when divided by 7.

12 numbers between 650 and 780 leave remainders of 6 when divided by 11.

Step-by-step explanation:

1. Number 655 is the smallest number that leaves the remainder of 4 when divided by 7. Number 774 is the greatest number that leaves the remainder of 4 when divided by 7. So,

a_1=655\\ \\a_n=774\\ \\d=7\\ \\a_n=a_1+(n-1)d\Rightarrow 774=655+7(n-1)\\ \\7(n-1)=774-655\\ \\7(n-1)=119\\ \\n-1=17\\ \\n=17+1=18

2. Number 655 is the smallest number that leaves the remainder of 6 when divided by 11. Number 776 is the greatest number that leaves the remainder of 6 when divided by 11. So,

a_1=655\\ \\a_n=776\\ \\d=11\\ \\a_n=a_1+(n-1)d\Rightarrow 776=655+11(n-1)\\ \\11(n-1)=776-655\\ \\11(n-1)=121\\ \\n-1=11\\ \\n=11+1=12

7 0
4 years ago
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miguuela wound a garden hose around a circular reel if the diameter of the Rails 10 inches how many inches of hose with line on
IgorLugansk [536]

Answer:

31.4 inches

Step-by-step explanation:

The circumference (C) of a circle of diameter d is given by the formula ...

... C = π·d

where π is the transcendental constant approximated by 3.14159265...

The circumference of a circular reel 10 inches in diameter is ...

... C = π·(10 in) ≈ 31.4 in

7 0
3 years ago
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