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kolezko [41]
3 years ago
6

Please help this ones pretty easy just not sure how to do it

Mathematics
1 answer:
BARSIC [14]3 years ago
3 0

Answer:

-8i + 51

Step-by-step explanation:

(3+5i)(2-9i)

6+10i-18i-45i²

**i² = -1.

6-8i + -45(-1)

= -8i + 51

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A football is kicked into the air from an initial height of 4 feet. The height, in feet, of the football above the ground is giv
exis [7]
25 = -16t^2 + 50t + 4
16t^2 - 50t + 21 = 0
16t^2 - 8t - 42t + 21 = 0
8t(2t - 1) - 21(2t - 1) = 0
(8t - 21)(2t - 1) = 0
8t - 21 = 0 or 2t - 1 = 0
t = 21/8 or t = 1/2
t = 2.625 or t = 0.5
7 0
3 years ago
Read 2 more answers
Please help. I don’t know what to do with the -8 and 12
inessss [21]

Answer: the simplified expression is

2y^15/(3x^5z^12)

Step-by-step explanation:

The given expression is

(-8x^2y^8z^-5) / (12^4y^-7z^7)

To simplify the given expression, we would apply one of the rules of indices. It is expressed as follows

x^a ÷ x^b = x^(a - b)

Applying the above rule of indices, the expression becomes

(-8/12 × x^(2 - 7) × y^(8 - - 7) × z^ (- 5 - 7)

= - 2/3 × x^- 5 × y^15 × z^-12

= - 2/3x^- 5y^15z^-12

= 2y^15/(3x^5z^12)

4 0
3 years ago
6 / 2 (1 + 2) =<br><br><br><br><br><br><br> this / means divide
babunello [35]

PEMDAS

6 ÷ 2 ( 1 + 2 ) =

1 + 2 = 3

6 ÷ 2 = 3

3 x 3 = 9

Your answer is <u>9</u>

hope this helps!

4 0
3 years ago
Read 2 more answers
Graph of 3X + Y = 10
DIA [1.3K]
Your slope is -3 and your y intercept is 10
6 0
3 years ago
Select the correct answer from each drop-down menu.
Ivenika [448]

Complete Question:

sierrac3000

06/28/2019

Select the correct answer from each drop-down menu.

Samuel received $250 as prize money for winning the St. Peterson High School Badminton Tournament. The money was deposited in a special scholarship account that offered an annual interest of 1.8% compounded semiannually. The amount he will have in the account after t years can be calculated using the expression below.

250(1+0.018/2)^2t

Use the given expression to complete the statements below.

The expression is the *blank* of the amount initially deposited and the *blank* of one and the rate of increase raised to the number of *blank*

1st Blank:

Product

Sum

Quotient

Square

2nd Blank:

Quotient

Product

Difference

Sum

3rd Blank:

Compounding Periods

Years

Months

Answer:

1st blank = product

2nd blank = sum

3rd blank = years

Step-by-step explanation:

The expression given above is :

250(1+0.018/2)^2t

The expression can thus be explained as:

The *product* of the amount initially deposited and the *sum* of one and the rate of increase raised to the number of *years*

7 0
3 years ago
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