2 years ago

Which of these shapes have an area

Mathematics

2 answers:

Gwar [14]2 years ago

6 0

Answer:

Shape 2 and 3

Step-by-step explanation:

shape 1 is not enclosed so it cannot have area

Elis [28]2 years ago

4 0

I pretty sure the answer is c

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Please help me with this

MissTica

Answer:

For the question on the right, I assume b is the exponential factor, or growth factor.

Step-by-step explanation:

Linear:

$Y=aX + b\\(X, Y) = (0, 15) => b = 15\\(X,Y) = (1, 12) => a = -3\\Y = -3X + 15$

You can find the equation by using two points and the equation for a line.

Exponential:

$Y = a^{bX+c}\\(X, Y) = (0, 81) => a^{c} = 81 => a^{c} = 3^{4} => a=3, c=4\\(X, Y) = (1, 27) => a^{b+c} = 27 => a^{b}a^{c} = 27 => a^{b} = \frac{27}{81} = \frac{1}{3} => b=-1\\Y = 3^{-X+4}$

6 0

2 years ago

How do you simplify 420/450?

MatroZZZ [7]

Find the GCD (or HCF) of numerator and denominator
GCD of 420 and 450 is 30Divide both the numerator and denominator by the GCD
(420/30)/(450/30)Reduced fraction: 14/15

Equivalent fractions

7 0

3 years ago

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I need help with this

kogti [31]

Answer:

x, y, and z I think that is it

5 0

3 years ago

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The circumference of a circle is 87 cm. What is the DIAMETER of the circle?