MATHEMATICS HIGH SCHOOL

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Answers

Answer 1

Answer:

Answer:

Step-by-step explanation:

For f(-4)=5(2-3(-4))=5(2+12) because - times - makes +

Therefore 5x2=10 + 5x12=60

10+60=70

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Show me how to solve the following problem 12.4 divided by two- fifths

Answers

12.4 divided by 2/5
Start by converting the decimal into fraction;
12.4÷0.4
= 31

Write it down as (124/10)/(2/5). So when you divide fractions you can flip it as (124/10)*(5/2). So after that cross cancel and you can get 31

Solve for x.
-3x + 4 = -8

Answers

-3x+4=-8

Subtract 4 from -8
then your left with -3x=-12
Divide -12 by -3
x=4

the answer would be x=-7

Please put me as a Brainlier

Solve 7(k- 3) = 3k - 5

Answers

$7(k- 3) = 3k - 5\n7(k)-7(3) = 3k-5\n7k - 21=3k-5\n7k-3k-21 =3k-3k-5\n4k-21=-5\n4k-21+21=-5+21\n4k=16\n(4k)/(4) =(16)/(4)\n\n\boxed{\bf{k=4}}$

A bag contains 12 slips of paper of the same size. Each slip has one number on it, 1-12. Describe an impossible event.

Answers

There are many impossible events. Here are a few.
I'm sure you can think of at least 15 more:

-- Pull 5 multiples of 3 from the bag.

-- Pull 3 multiples of 5 from the bag.

-- Pull 7 odd numbers from the bag.

-- Pull 7 even numbers from the bag.

-- Pull two slips from the bag whose sum is more than 21 .

-- Pull three slips from the bag whose sum is more than 33 .

-- Pull two slips from the bag whose sum is less than 3 .

-- Pull three slips from the bag whose sum is less than 6 .

-- Pull two slips from the bag whose product is more than 132 .

-- Pull two slips from the bag whose product is less than 2 .

etc.

How many radians does the minute hand of a clock rotate through over half an hour? How many degrees?

Answers

Answer:

So minute hand will rotate $\pi radian$ in half an hour

Step-by-step explanation:

In one hour minute hand of clock rotate about 360°

So in half an hour minute hand clock rotate $(360)/(2)=180^(\circ)$

We have to find how many minute hand rotate in radian

For conversion of degree to radian we have to multiply with $(\pi )/(180)$

So $180^(\circ)=180* (\pi)/(180 )=\pi radian$

So minute hand will rotate $\pi radian$ in half an hour

A bird sits on top of a lamppost. The angle of depression from the bird to the feet of an observer standing away from the lamppost is 35 degrees. The distance from the bird to the observer is 25 meters. How tall is the lamppost? Draw a diagram, label it, and show how to find this value.

Answers

Hello,
See the picture jointed

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Guys I’ve got 15 minutes to answer all of them please help I’ve been busy with the rest of the problems help !!!!