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solong [7]
3 years ago
10

Simplify the expression (√3 + i)(√3- i) and write the result in the form a+bi.

Mathematics
1 answer:
goblinko [34]3 years ago
8 0

Answer: D) 4

Step-by-step explanation:

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On an algebra test , the highest grade was 50 points higher than the lowest the sum of the two grades was 122 find the lowest gr
KATRIN_1 [288]

Answer:

Highest grade: 86

Lowest grade: 36

Step-by-step explanation:

Let the highest grade be h, lowest grade be l.

h = 50 + l  \\  \\ h + l = 122 \\ h = 122 - l \\  \\

Therefore,

122 - l \:  = 50 + l \\ 2l \:  = 72 \\ l = 36 \\  \\ h = 36 + 50 = 86

6 0
3 years ago
Problem Page Donna had 2/7 acres of land. She planted 4/5 of it with corn. How many acres did she plant with corn?
Dafna11 [192]

Acres of planted corn = (2/7) * (4/5)

= (2/7) * .8 = 1.6 / 7 acres = 0.2285714286 acres


5 0
3 years ago
If a cylindrical tank holds 100,00 gallons of water which can be drained from thebottom of the tank in an hour, then Torricelli’
tatyana61 [14]

Answer:

First, I think the right formula is:

V(t) = 100,000(1-\frac{t}{60} ),20\leq t\leq 60

A) We first derive the formula given above:

V'(t)=-\frac{100000}{60}

V'(t) represent the drain rate of the tank volume.

B) the units is: gallons/time

C) at V'(10) = 100000/60 = 1666.66 gallons/time.

because the formula V'(t) is constant so it doesn't depend of time.

5 0
3 years ago
Given cos 0 = 11/6 and angle 0 is in Quadrant I, what is the exact value of sin 0 in
user100 [1]

1 = sin²0 + cos²0

sin²0 = 1 - cos²0

sin²0 = 1 - 11/36

sin²0 = 25/36

sin 0 = 5/6 or -5/6

In the first quadrant, the values for sin, cos and tan are positive.

sin0 = 5/6

8 0
3 years ago
Solve to find the value of x.<br> x+27=93<br><br> i need help
igomit [66]

Answer: 66

Step-by-step explanation:

To solve for x in x+27=93, subtract both sides of the equation by 27

X + 27 -27= 93 - 27

X= 66

I hope this helps

8 0
3 years ago
Read 2 more answers
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