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2 years ago

Hello does anyone wanna be my friend plz answer asap

Mathematics

2 answers:

Dmitry_Shevchenko [17]2 years ago

7 0

Answer:

first what are you im an alien and u

AfilCa [17]2 years ago

7 0

Answer:

hell to the ya

Step-by-step explanation:

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The amazon river is about 6,516 kilometers long the mississipi river is about 3,775 kilometers long what is the difference in ki

MrMuchimi

6,516 - 3,775 = 2,741 kilometers

4 0

2 years ago

Which expression represents the sixth term in binomial expansion (2a-3b)^10

AysviL [449]

Therefore the sixth term in the binomial expansion is $=-{10}C_5(2a)^{5} (3b)^5$

Step-by-step explanation:

Given

$(2a -3b)^{10}$

$=^{10}C_0 (2a)^{10} + ^{10}C_1(2a)^9(-3b)+^{10}C_2(2a)^8(-3b)^2+...............+^{10}C_10(-3b)^{10}$

So,

$T_{n+1}= ^{10}C_n(2a)^{(10-n)} (-3b)^n$

$T_6=T_{(5+1)} =^{10}C_5(2a)^{10-5} (-3b)^5$

Therefore the sixth term in the binomial expansion is= ${10}C_5(2a)^{10-5} (-3b)^5$

$=-{10}C_5(2a)^{5} (3b)^5$

3 0

3 years ago

Let f(x) = x2 - 81. Find f-1(x).

aalyn [17]

The answer is 1) ± √x+81

Step 1: Substitute y for f(x). 
Step 2: Since every (x, y) has its partner (y, x)y switch x and y.
Step 3: Solve for y.

Step 1.
The function is: f(x) = x² - 81
Substitute y for f(x): y = x² - 81

Step 2.
Switch x and y: x = y² - 81

Step 3.
Solve for y (which is now f⁻¹(x)): f⁻¹(x) = y
x = y² - 81
y² = x + 81
y = +-√(x+81)

Therefore, the choice 1) is correct.

5 0

3 years ago

How to factor10x^2+89x-9

hodyreva [135]

Look at the attached picture ⤴

Hope it will help u...:)

7 0

3 years ago

Read 2 more answers

6The table below represents the charges for using the Internet at a cafe. 3 Number of Minutes Amount Charged (in dollars) 7.5 30

Dovator [93]

Answer:

Step-by-step explanation:

y=mx+b

m=(y2-y1)/((x2-x1)

m=(12-7.5)/(120-30)

m=0.05

y=0.05x+b, using point (30,7.5)

7.5=0.05(30)+b

7.5=1.5+b

b=6

y=0.05x+6

6 0

3 years ago