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4 years ago

Please help me with number 18 i just need number 18

Mathematics

1 answer:

Ad libitum [116K]4 years ago

6 0

1. So you have 2 1/2 and you want to find 1/5 of it. First, convert them to decimals. 2. Now you have 2.5 and need to find .2 of it 3. Multiply 2.5 by .2 to get your answer 4. Convert back to a fracton, your answer is 1/2

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What is the circles equation?

kolbaska11 [484]

Answer:

A. x²+y² = 9

Step-by-step explanation:

r = 3

So, r² = 9

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4 years ago

Using words and equations, explain what you learned about exponents in this lesson so that someone who was absent could read wha

sergij07 [2.7K]

Answer:

Multiplication rule of exponents says $(xy)^n = x^n * y^n$ hence, 2^4 • 3^4 =6^4

Step-by-step explanation:

As per the rule of exponents,

$(xy)^n = x^n * y^n$

If we go by the above equation, we can deduce that x is 2 and y is 3

Thus, 2^4 *3^4 can be written as $(2*3)^4 = 6^4$

Hence, 2^4 • 3^4 =6^4

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3 years ago

36. GEOMETRY Write an algebraic expression to

Stels [109]

Answer:

108 in²

Step-by-step explanation:

Area of a triangle is given as ½*base*height

The base of the given triangle = h + 6

height = h

Algebraic expression for its area = $\frac{1}{2}*(h + 6)*h = \frac{1}{2}(h^2 + 6h) = \frac{h^2 + 6h}{2}$

Evaluate the area if h is given as 12 inches.

Plug in the value of h into the algebraic expression:

$\frac{h^2 + 6h}{2} = \frac{12^2 + 6(12)}{2}$

$= \frac{144 + 72}{2}$

$= \frac{216}{2} = 108 in^2$

6 0

4 years ago

Which is the area of a circle with a diameter of 7 units? (use 3.14 for pi)

Alex777 [14]

Answer:

The area of circle = πR ^2

And diameter = 7 units

By interchanging d in R =d/2 = R =7/2 = 3.5

Step-by-step explanation:

<h3>πR ^2 =3.14 x (3.5)^2</h3><h3> =3.14 x 3.5 x 3.5</h3><h3> =38.465 (unit)^2 <em><u>Answer</u></em></h3>

<em><u>Hope</u></em><em><u> </u></em><em><u>it's help</u></em><em><u> </u></em><em><u>^_^</u></em>

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3 years ago

A number written in the form a + bi is called a _____ number.

Debora [2.8K]

The correct answer to this question is letter "A. complex." A number written in the form a + bi is called a complex number. The "i" part is the imaginary part of that expression, which is complex. Imaginary numbers are complex and it's hard to evaluate, sometimes.

3 0

4 years ago

Read 2 more answers