MATHEMATICS MIDDLE SCHOOL

In exercises 3-6, write the expression in terms of sine or cosineSin 22°

Cos 56°

Cos 15°

Sin 37°

Answers

Answer 1
Answer: sin 22 = 0.3746
cos 56=0.5592
cos 15= 0.9659
sin 37=0.6018
just punch it in you calculator (ex. sin(22) and it should be in degree mode if you're using graphing calculator)

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A factory produces 2354 hammers every hour. Which expression can be used to find how many hammers the factory produces in 3 hours

Answers

You should use multiplication:

2354 * 3 = 7062
      An expression might be: 2354h / 3hrs. You can make the real division sign if you're using paper. Hope this helped :)

Can I have help on this question please

Answers

5/7= x/42
You have to get x on its own side
5/7=x/42
*42=  *42
5/7*42=x
x=30
Hope this helped
you multiply both sides by 42 so you get 42×5/7=x , 5×42=210, 210/7=30, x=30

Identify the linear equation.A) y = lxl + 5

B) y = 12x + 3

C) y = x2 - 4

D) y = 34x2

Answers

the answer is always y=l×l+5

Answer:

y=1/2x+3 is linear

Step-by-step explanation:

)Marcus painted one-third of his bedroom in fourth-fifths of an hour. At this rate, how long would it take him the paint the entire room?

Answers

It will take 2.4 hours to paint the entire room.

Given that,

Marcus painted one-third of his bedroom in the fourth-fifths of an hour.

We have to determine,

At this rate, how long would it take him the paint the entireroom?

According to the question,

The value of time would it take him the paint the entire room is determined by the unitary method.

Marcus painted one-third of his bedroom in the fourth-fifths of an hour.

(1)/(3) \ part = (4)/(5) \ hour\n\n

Then, The time is taken to paint the entire room is,

= (4)/(5) * 3\n\n= (12)/(5)\n\n= 2.4 \ hours

Hence, It will take 2.4 hours to paint the entire room.

To know more about Fractions click the link given below.

brainly.com/question/12431044
1/3  =  4/5
2/3 =   4/5
3/3 =   4/5
-----------------
          12/5 = 2 and 2/5 of an hour 

2 hours and 24 mins
(i hope so, check my work)

Which property of multiplication is shown by the equation 14 • y • 1 = 14y?

Answers

Multiplicative identity is the property shown by this equation

Explanation:

  • Multiplicative identity is explained as the product of any number and one is that number. Multiplicative identity is a property exhibited by most of the mathematical tools.
  • Zero and one are the numbers used to simplify equations whereas zero is called the additive identity. If we add any number with zero, it will result in the same in number.
  • Like that 1 is used in multiplicative identity.  More simple example could be  5 ˣ 1 = 5. Hence, it is the multiplicative identity  property

Answer:

Identity

Step-by-step explanation:

Did the test

15% of Alina’s workout consisted of cardio exercise. 25% of Dane’s workout consisted of cardio exercise. Which statement must be true?If they worked out for the same amount of time, Dane did 10 more minutes of cardio exercise than Alina.


If Alina’s workout was 80 minutes, and Dane’s workout was 48 minutes, they spent the same amount of time on cardio exercise.


If both workouts were 60 minutes, Dane spent 8 more minutes on cardio exercise than Alina did.


Alina spent less time on cardio exercise than Dane did.

Answers


The correct answer is B. If Alina’s workout was 80 minutes, and Dane’s workout was 48 minutes, they spent the same amount of time on cardio exercise.

To figure this out, first find 15% of 80 and then 25% of 48.

To find 15% of 80, you can first find 10% of 80 which is 8(just move the decimal one place to the left). The remaining 5% will be half of 8 since 8 is 10%. Add both the numbers up and you will get 12. (8+4=12)

To find 25% of 48, you can divide 48 by 4. Since percent means 'out of 100', 25% is 25 of 100. 100 divided by 25 is equal to 4. So, 48 divided by 4 is equal to 12.

So, the final answer is B. They both equal to 12.

Hope it helps :)
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