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2 years ago

Rectangle 2. triangle 3. cone 4. circle 5. cylinder

Mathematics

1 answer:

7nadin3 [17]2 years ago

6 0

Circle = perpendicular cross section of a cylinder

cone = perpendicular cross section of a pyramid

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Find the area of the shape .

weqwewe [10]

Answer:

3.14

Step-by-step explanation:

A=π*r^2

3.14*(2^2)

3.14*4

12.56/4 (because it's 1/4th a circle)

3.14.

3 0

3 years ago

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Determine the equation of quadratic function represented by the table of value below.

Svetllana [295]

Answer:

Step-by-step explanation:

The general rule for the quadratic function is

$y=ax^2+bx+c$

Use the data from the table:

$y(0)=6\Rightarrow 6=a\cdot 0^2+b\cdot 0+c\\ \\y(1)=4\Rightarrow 4=a\cdot 1^2+b\cdot 1+c\\ \\y(-1)=10\Rightarrow 10=a\cdot (-1)^2+b\cdot (-1)+c$

We get the system of three equations:

$\left\{\begin{array}{l}c=6\\ \\a+b+c=4\\ \\a-b+c=10\end{array}\right.$

From the first equation

$c=6,$ then

$\left\{\begin{array}{l}a+b=-2\\ \\a-b=4\end{array}\right.$

Add these two equations:

$a+b+a-b=-2+4\\ \\2a=2\\ \\a=1$

So,

$b=-2-a=-2-1=-3$

The quadratic function is

$y=1\cdot x^2-3x+6\\ \\y=x^2-3x+6$

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3 years ago

What is the measure of angle B!!!!!

emmainna [20.7K]

Answer:

b. 70

Step-by-step explanation:

because.......

180 is to much

20 is too much

75 is a little bit more.

Sooo if 70 does not work then go for 75.

5 0

2 years ago

Find the value of M in the following figure.

Ivahew [28]

180 - (30+35)
= 180 - 65
= 115

M = 115 (vertical angles)

4 0

3 years ago

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If f(x)=9−4 |x+1|, find f(−5). −15 −7 7 23

r-ruslan [8.4K]

Answer:

If f(x) = 9–4 |+1|, find f(-5)?

Step-by-step explanation:

-7

ANSWER 23

6 0

3 years ago