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2 years ago

Need Help Bro Tryna hurry up and this over with lol

Mathematics

1 answer:

Anettt [7]2 years ago

7 0

9514 1404 393

Answer:

62.8 inches

Step-by-step explanation:

Put the given numbers in the formula and do the arithmetic.

C = 2πr

C = 2(3.14)(10 in) = 62.8 in

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Let Upper A equals left bracket Start 2 By 2 Matrix 1st Row 1st Column negative 2 2nd Column 4 2nd Row 1st Column 1 2nd Column 3

vagabundo [1.1K]

Answer:

not

Step-by-step explanation:

$\left[\begin{array}{ccc}-2&4\\1&3\end{array}\right] *\left[\begin{array}{ccc}-2&1\\3&7\end{array}\right]=$

First is A and Second is B

Let's find A*B

$\left[\begin{array}{ccc}-2(-2)+4*3&-2*1+4*7\\1(-2)+3*3&1*1+3*7\end{array}\right] =\left[\begin{array}{ccc}16&26\\7&22\end{array}\right]$

$\left[\begin{array}{ccc}-2&1\\3&7\end{array}\right] \left[\begin{array}{ccc}-2&4\\1&3\end{array}\right] =$

Now let's find B*A

$\left[\begin{array}{ccc}-2(-2)+1*1&-2*4+1*3\\3(-2)+7*1&3*4+7*3\end{array}\right] =\left[\begin{array}{ccc}5&-5\\1&23\end{array}\right]$

c) They are not

7 0

2 years ago

The volume of a single layer in a rectangular prism is 18 cubic centimeters. There are 5 layers in this rectangular prism. What

sweet [91]

Answer: $90cm^3$

Step-by-step explanation:

A rectangular prism is a three-dimensional solid.

A rectangular prism has six faces (each one of these faces are rectangles), eight vertices and twelve edges.

You know that this rectangular prism has 5 layers and the volume of one of these layers is 18 cubic centimeters ( $18cm^3$ ).

Assuming that all these layers are equal, the volume of this rectangular prism can be calculated with:

$V_{prism}=5*V_1$

Where $V_1$ is the volume of one layer.

Substituting, you get:

$V_{prism}=(5)(18cm^3)\\\\V_{prism}=90cm^3$

8 0

3 years ago

What is the domain of y = cos ^-1x?

Bas_tet [7]

Answer:

Step-by-step explanation:

Correct option is

[1,(1+π)

]

f(x)=(1+sec

−1

(x))(1+cos

−1

(x))

Here the limiting component is cos

−1

(x), since the domain of cos

−1

(x) is [−1,1].

Therefore,

f(1)=(1+0)(1+0)

f(−1)=(1+π)(1+π)

=(1+π)

Hence range of f(x)=[1,(1+π)

]

8 0

2 years ago

A dress regularly sells for $96. The sale price is $68. Find the percent decrease of the sale price from the regular price. Roun

yuradex [85]

Answer:

29.2 percent decrease

Step-by-step explanation:

the difference between 96 and 68 is 28 bucks

28 is what percent of 96

is over of

x/100 x 28/96

cross multiply=2800/96

divide 2800 by 96 and the answer is 29.1666

4 0

2 years ago

Help me please<br>help me please

Nikolay [14]

Answer:

1 second

Step-by-step explanation:

$s=-5\\u=0\\v=\\a=-10\\t=t$

$\begin{aligned}\textsf{Using} \quad s & =ut+\dfrac12at^2\\ \implies -5 & =(0)t+\dfrac12(-10)t^2\\ -5 & = -5t^2\\ t^2& = 1\\ t & = \pm\sqrt{1}\\ t & = 1\: \sf s\end{aligned}$

7 0

2 years ago