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3 years ago

Simplify by combining like terms.1. 5a-a

Mathematics

1 answer:

emmasim [6.3K]3 years ago

6 0

5a-a=4a you subtract five from one and get four a

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Reflect the given triangle over the line y=x. [3 6 3 -3 3 3]

iragen [17]

If reflected over y = x

then use

$\left[\begin{array}{ccc}0&1\\1&0\end{array}\right]$

=====================

$\left[\begin{array}{ccc}0&1\\1&0\end{array}\right] \left[\begin{array}{ccc}3&6&3\\-3&3&3\end{array}\right]$

similar as (x, y) → (y, x)

multiply the matrixes to get the final answer

$\left[\begin{array}{ccc}(3*0+1*-3)&(6*0+1*3)&(3*0+1*3)\\(3*1+(-3*0)&(1*6+0*3)&(1*3+0*3)\end{array}\right]$

$\left[\begin{array}{ccc}-3&3&3\\3&6&3\end{array}\right]$

3 0

2 years ago

How is this equation completed? I cannot find any examples in the book.

djverab [1.8K]

Answer: Option D

$t_{max} =19\ s$

Step-by-step explanation:

Note that the projectile height as a function of time is given by the quadratic equation

$h = -12t ^ 2 + 456t$

To find the maximum height of the projectile we must find the maximum value of the quadratic function.

By definition the maximum value of a quadratic equation of the form

$at ^ 2 + bt + c$ is located on the vertex of the parabola:

$t_{max}= -\frac{b}{2a}$

Where $a$

In this case the equation is: $h = -12t ^ 2 + 456t$

Then

$a=-12\\b=456\\c=0$

So:

$t_{max} = -\frac{456}{2*(-12)}$

$t_{max} =19\ s$

7 0

3 years ago

What is the volume of a rectangular box that measures 3 by 8 by 20 inches?

laiz [17]

480 cubic inches should be the answer

5 0

3 years ago

Read 2 more answers

She has 7 initiatives and wants to put 2 stickers on each. She has 10 stickers. How many more stickers does she need?

Zina [86]

Answer:

Step-by-step explanation:

If she wants to put 2 on each invitation, then we multiply the amount of invitations she has by the amount of stickers going on each invitation. 7 times 2 is 14.

She has 10 stickers, and she needs 14 in total, so we subtract 10 from 14 and we get 4.

In conclusion, the girl needs 4 sticks more

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3 years ago

Find the nonpermissible replacement for y in

vivado [14]

Answer:

Step-by-step explanation:

It is not permissible for the denominator of a fraction to equal zero.

Set 9y = 0

y = 0

7 0

3 years ago

Simplify by combining like terms.1. 5a-a​

Simplify by combining like terms.1. 5a-a