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4 years ago

Pls some1 help I’ll help u PLSSSS HELP

Mathematics

1 answer:

kakasveta [241]4 years ago

4 0

1/3 is bigger than 30%

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The decimal 13/6 is a repeating decimal true or false?

Elza [17]

Answer:

true

Step-by-step explanation:

13÷6 = 2.16666666666666666666

7 0

3 years ago

there are 30000 lioms in africa. the number of lions in africa decreases exponentially by 2% each year. Find the number of lion

viktelen [127]

30,000-100%

2%(6)=12%

30,000/100(12)=3600

30,000-3600=26400 lion in Africa after 6 years

3 0

3 years ago

If (2i/2+i)-(3i/3+i)=a+bi, then a= A. 1/10 B. -10 C. 1/50 D. -1/10

Verizon [17]

Answer:

Option A is correct.

Step-by-step explanation:

We are given:

$\frac{2i}{2+i}-\frac{3i}{3+i} = a+bi$

We need to find the value of a.

The LCM of (2+i) and (3+i) is (2+i)(3+i)

$=\frac{2i(3+i)}{(2+i)(3+i)}-\frac{3i(2+i)}{(2+i)(3+i)}\\=\frac{6i+2i^2}{(2+i)(3+i)}-\frac{6i+3i^2}{(2+i)(3+i)}\\=\frac{6i+2i^2-(6i+3i^2)}{(2+i)(3+i)}\\=\frac{6i+2i^2-6i-3i^2)}{5+5i}\\=\frac{-i^2}{5+5i}\\i^2=-1\\=\frac{-(-1)}{5+5i}\\=\frac{1}{5+5i}$

Now rationalize the denominator by multiplying by 5-5i/5-5i

$=\frac{1}{5+5i}*\frac{5-5i}{5-5i} \\=\frac{5-5i}{(5+5i)(5-5i)}\\=\frac{5-5i}{(5+5i)(5-5i)}\\(a+b)(a-b)= a^2-b^2\\=\frac{5(1-i)}{(5)^2-(5i)^2}\\=\frac{5(1-i)}{25+25}\\=\frac{5(1-i)}{50}\\=\frac{1-i}{10}\\=\frac{1}{10}-\frac{i}{10}$

We are given

$\frac{2i}{2+i}-\frac{3i}{3+i} = a+bi$

Now after solving we have:

$\frac{1}{10}-\frac{i}{10}=a+bi$

So value of a = 1/10 and value of b = -1/10

So, Option A is correct.

8 0

4 years ago

Justify whether the equation y=9x−4 defines a linear or nonlinear function.

CaHeK987 [17]

Answer:
Linear

Explanation:
A non linear function would have a squared term

3 0

3 years ago

An ice Green stand uses that expression 2 + 0.5x to determine the cost (in dollars)

Mashutka [201]

Cost of ice cream cone with five scoops is $ 4.5

Solution:

Given that ice Green stand uses that expression 2 + 0.5x to determine the cost (in dollars) of an ice cream cone that has x scoops of ice cream

The given expression to find total cost of icecream is:

cost = 2 + 0.5x

Where "x" is the number of scoops of ice cream

To find the cost of ice cream with five scoops, substitute x = 5 in given equation

cost = 2 + 0.5(5)

cost = 2 + 2.5

cost = 4.5

Thus cost of ice cream cone with five scoops is $ 4.5

5 0

4 years ago