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3 years ago

Sinx=cos19∘ What is the value of x? Enter your answer in the box.

1 answer:

6 0

Remember that cos is just a translation of sin and vice versa.
So:
Sin(x) = Cos(90 - x)
Cos(x) = Sin(90 - x)

Therefore, to answer your question:
Cos(19) = Sin(90 - 19)
= Sin(71)

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5. 40 = }(9x + 30) + 2

Anvisha [2.4K]

Answer:

x=-16

Step-by-step explanation:

We are given with the equation

$40=-\frac{1}{3} \times (9x+30)+2$

We are asked to solve it for x.

Distributing $\frac{1}{3}$ over bracket and simplifying

$40=-(\frac{9x}{3}+\frac{30}{3})+2$

$40=-(3x+10)+2$

$40=-3x-10+2$

$40=-3x-8$

Adding 8 on both sides

$48=-3x$

Dividing both sides by -3

$x=-16$

7 0

3 years ago

Eric has 183 coins all of them are nickels and dimes. If the total value of the coins is 14.45, how many of each denomination co

FromTheMoon [43]

Answer:

77 nickels

106 dimes

Step-by-step explanation:

Let there be n nickes and d dimes

Since there are 183 coins, we can write:

n + d = 183

Also, the value of nickel is 0.05 and dime is 0.1, total value is 14.45, so we can write:

0.05n + 0.1d = 14.45

Solving 1st equation for n, we have:

n = 183 - d

Putting this into 2nd equation and solving for d:

$0.05n + 0.1d = 14.45\\0.05(183-d) + 0.1d = 14.45\\9.15-0.05d+0.1d=14.45\\0.05d=5.3\\d=106$

There are 106 dimes

Since, n = 183 - d

n = 183 - 106

n = 77

There are 77 nickels

4 0

3 years ago

What is the answer!!!!!!

weqwewe [10]

Answer:

The answer is c: the lendth of the photo frame is between 11 and 12 inches.

I hope this helps you!

8 0

3 years ago

each minute there is one Diamond ring sold on a website. find the number of Diamond rings sold in 27 days

Aneli [31]

Answer:

38,880

Step-by-step explanation:

there are 38,880 minutes in 27 days and 1 ring sold every minute so 38,880*1=38,880

6 0

4 years ago

Read 2 more answers

I WILL GIVE CROWN

lubasha [3.4K]

Answer:

the answer would be 773/1275 if your dividing if its multiplying its -394.24

8 0

3 years ago

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