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gtnhenbr [62]
2 years ago
6

1. What is the binomial expansion of (x + 3)5? ​

Mathematics
1 answer:
lara [203]2 years ago
4 0

Answer:

5x + 15

Step-by-step explanation:

To expand the binomial, you need to multiply each term inside the parentheses by 5.

(x + 3)5

= (x * 5) + (3 * 5)

= 5x + 15

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Answer this too, the BRAINIEST!
-Dominant- [34]

Check out the attached image below for the steps on how to do this derivation.

------------

Some notes:

  • For line 2, I used the identity \sec^2\theta = \tan^2\theta+1
  • For line 7, I applied the reciprocal to both sides.
  • For line 8, I used the identity \cot\theta = \frac{1}{\tan\theta}
  • For line 9, I used the identty \cot^2\theta = \csc^2\theta - 1 which is a rearrangement of \cot^2\theta + 1 = \csc^2\theta
  • For lines 1 through 6, I'm isolating tan^2, so that I can later transform that into cot^2, which leads to csc^2. All of this is done through the identities mentioned above.

8 0
3 years ago
Is (-3, 2) a solution of -4r - 10y< - 9?
Blizzard [7]

Answer:

<em>The point (-3,2) is not a solution of the inequality</em>

Step-by-step explanation:

<u>Inequality</u>

Inequalities relate the left and the right side of an expression with an operator other than the equal sign.

The inequality given in the question is

-4r - 10y< - 9

There are many combinations of r and y that make inequality be true. For example, for r=1 and y=1

-4(1) - 10(1)< - 9

-14< - 9

This relation is true since -14 is less than -9.

Also, there are many combinations that make the given inequality be false.

For example, for r=2 and y=-1

-4(2) - 10(-1)< - 9

-8+10

2

This inequality is false.

Let's test the point (-3,2)

-4(-3) - 10(2)< - 9

12-10

2

Which is false, thus the point (-3,2) is not a solution of the inequality

3 0
3 years ago
Deanna borrowed $650 at 8% 0 simple interest. How much - 52 interest did she pay for 1 year?​
Ronch [10]

Answer:

i = ($650)(0.08)(1) = $52

Step-by-step explanation:

The formula for simple interest is i = prt.  Here p = $650, r = 0.08 and t = 1 (year).  Then the simple interest Deanna paid for this one year loan was

i = ($650)(0.08)(1) = $52

7 0
2 years ago
Read 2 more answers
Finding the surface area
Serga [27]

Answer: so you do length times width times height and then you divide by two

Step-by-step explanation:

7 0
2 years ago
A road rises 50 feet over a horizontal distance of 600 feet. What is the slope of the road?
Hatshy [7]

Answer:

1/12 (or 0.833)

Step-by-step explanation:

Recall that the definition of "slope" is the change in vertical distance divided by the change in the horizontal distance. (aka. rise ÷ run)

it is given that rise = 50 feet and the horizontal distance (i.,e "run") = 600feet

hence slope = rise / run = 50 / 600 = 1/12 (or 0.833)

6 0
3 years ago
Read 2 more answers
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