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dimulka [17.4K]
2 years ago
7

Trig help please, 2 questions, 10 pts

Mathematics
2 answers:
Alex_Xolod [135]2 years ago
7 0

Answer

1=b

2=c

Step-by-step explanation:

just olya [345]2 years ago
6 0
<span>A flywheel rotates 450 times in 1 minute. How many degrees does it turn in 1 second?
a. 39 degrees
b. 2700 degrees
c. 18 degrees
450 times in 60 sec
450 times of 360 deg in 60 sec
162000 deg in 60 sec
162000/60 in 1 sec
2700 deg in 1 sec
choose B 



The speed of a carousel is 4.3 revolutions per minute. James chooses a red horse. If the typical ride is 5 minutes, how far is his starting point is James when the ride is over?
a. 90 degrees
b. 0 degrees
c. 180 degrees
</span>4.3 revolutions per 1 minute
4.3 x 5 revolutions in 5 min 
21.5 revolutions in 5 min
Means: a 21 whole revolution and a half of a revolution. A half of a circle  = 180 degrees.
choose C
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Find the slope intercept <br>(9,5),(7,-11)<br>y=​
grin007 [14]

Answer:

y=8x-67

Step-by-step explanation:

So the question is what is the equation for the following two coordinate points?

Well to start off what is the formula? The formula is called the linear equation. Which is y=mx+b. What does these letters or "variables" mean or represent?! Welp, m stands for the slope, which is "Δy over Δx." Some people call say "the change of y over x." I call it the rise over run. So it is saying y over x. The b in the linear equation is the y-intercept. The y-intercept is when the line crosses the y-axis.

With that being said, let's find the slope. But how? Well with the Δy over Δx. The formula is y₂-y₁ over x₂-x₁. With the two coordinate points we can label them.

y₂=5

y₁=(-11)

x₂=9

x₁= 7

Now let set it up into the equation of y over x

Slope =  <u> 5- (-11) </u> = <u> 5 + 11  </u> = <u>  16 </u> = 8

                  9-7         9-7          2

So we now have the slope! Which is 8! So put that into the linear equation!

y=8x+b

Next, we need to find b, the y-intercept! How do we do that well, we can figure it out by one of the coordinate points! Let use the (7, -11) point for example! Remember, x= 7 and y= (-11)

(-11) = 8(7) + b

(-11) = 56 + b

<u>-56   -56</u>

-67 =  b

We now have b, which is negative 67! So we need to put all the information we have found into the linear equation!

y=8x-67

6 0
3 years ago
What is true about equivalent fraction
lisabon 2012 [21]
Numerators will be equal after the multiplication.
5 0
2 years ago
Can somebody who knows how to do probability please help answer these questions correctly? Thanks! (Btw the P= probability)
stira [4]

Answer:

P(2): 1/5

P(4): 1/5

P(odd number): 3/5

P(whole number): 5/5

P(6): 0/5

P(2 or 3): 2/5

Step-by-step explanation:

There are 5 <em>equal </em>sections in this circle. So, the probability to land in each section is 1/5.

The odd numbers are 1, 3, and 5. Since each section is 1/5, you add

1/5 + 1/5 + 1/5 = 3/5. That is the probability that you will land in any odd number.

Because all the numbers listed are whole numbers, no matter where the spinner lands it will be a whole number. So, the probability is 5/5 for whole numbers.

Since 6 is not a section, it's probability will be 0/5 (or you can just put 0).

"Or" means you add the two probabilities. Add the probability of landing on 3 (which is 1/5) to the probability of landing on 2 (which is also 1/5). So, you get 2/5.

6 0
3 years ago
Read 2 more answers
Complete the slope-intercept form equation of the line with slope 9 that passes through the point (0,2)
sergij07 [2.7K]

Answer:

2=2

Step-by-step

Y=mx+b

2=9(0)+2

9 x 0=0

2=2

I hope I got it correct and helped you.

3 0
2 years ago
Use the inverse of the function y = x2 − 18x to find the unknown values.
Lerok [7]

ANSWER

b=1, c=81, and d=9.

EXPLANATION

The given function is:

y={x}^{2}-18x

This function is the same as:

y={(x - 9)}^{2}-81

To find the inverse of this function, we interchange x and y.

x={(y-9)}^{2}-81

Solve for y:

x+81={(y- 9)}^{2}

Take square root of both sides:

\pm \sqrt{x + 81}=y-9

y=\pm \sqrt{x + 81}+9

Hence,

b=1, c=81, and d=9.

7 0
3 years ago
Read 2 more answers
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