Could a quadrilateral have 4 obtuse angles? Why?

Mathematics

2 answers:

Otrada [13]3 years ago

6 0

No! Because the angles have to add up to 360.

worty [1.4K]3 years ago

3 0

No it cant... Because the angles have to add up to 360

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How do you solve the equations if the exponent is negative

Karo-lina-s [1.5K]

ANSWER

A. 1/9

EXPLANATION

When we have an expression with a negative exponent we can solve it by "flipping" the fraction and solving with the positive exponent:

$\mleft(\frac{a}{b}\mright)^{-c}=\mleft(\frac{b}{a}\mright)^c$

In this problem we have to find:

$f(-2)=3^{-2}$

We can think of a whole number as a fraction whose denominator is 1:

$f(-2)=\mleft(\frac{3}{1}\mright)^{-2}$

So we can use the trick:

$f(-2)=\mleft(\frac{1}{3}\mright)^2$

And solve:

$f(-2)=\frac{1}{3^2}=\frac{1}{9}$

6 0

2 years ago

The following table shows the number of feet a bird flies above the ground as a function of time: (In the picture)

Otrada [13]

Answer:

D.) (14, 0); the time it takes for the bird to reach the ground

Step-by-step explanation:

The attached graph shows a plot of the table values and the two offered solution options.

The dependent variable in this scenario is the bird's height above the ground. When that is zero, the bird is on the ground. This fact makes choices B and C seem ridiculous.

We note from the table and graph that the bird is on a path that decreases in height by 3 feet every 2 seconds. If the bird continues that rate of descent, it will reach the ground after 14 seconds.

That is, its (time, height) pair will be (14, 0), matching choice D.

_____

Choosing any answer to this question requires making assumptions that are inconsistent with real-world bird behavior. At least, the problem statement should say what assumptions are applicable.