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3 years ago

Help a friend who is horrible at algebra pls :^)

Mathematics

1 answer:

sergij07 [2.7K]3 years ago

3 0

Find the vertex by using the formula -b/2a
To find a and b, we must know that a and b are located at y = ax^2 + bx + c.
We find that b is 4 and a is 1 by looking at the given quadratic function.
The answer is A. -4/2(1) because the question is looking for the correct steps to find the answer.

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Is the coldest temperature represented by a positive or negative number? *<br> Positive<br> Negative

dimulka [17.4K]

The coldest temp is negative

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4 years ago

What is the product of the two matrices? Fill in the missing elements of the resulting matrix.

olganol [36]

The product of the given two matrices comes out to be $\left[\begin{array}{ccc}1&0\\0&1\end{array}\right]$

Here we are given the 2 matrices as follows-

$\left[\begin{array}{ccc}7&-2\\-6&2\end{array}\right] \left[\begin{array}{ccc}1&1\\3&3.5\end{array}\right]$

To find the product of 2 matrices, the number of columns in the first matrix must be equal to the number of rows in the second matrix.

Here since both of the matrices are 2 × 2, their product is possible.

Now, to find the product, we need to multiply each element in the first row by each element of the 1st column of the second matrix and then find their sum. Similarly, we do this for all rows and columns.

Therefore,

$\left[\begin{array}{ccc}(7*1)+(-2*3)&(7*1)+(-2*3.5)\\(-6*1)+(2*3)&(-6*1)+(2*3.5)\end{array}\right]$

= $\left[\begin{array}{ccc}(7)+(-6)&(7)+(-7)\\(-6)+(6)&(-6)+(7)\end{array}\right]$

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

Thus, the product of the given two matrices comes out to be $\left[\begin{array}{ccc}1&0\\0&1\end{array}\right]$

Learn more about matrices here-

brainly.com/question/13595915

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3 0

1 year ago

Chris buys 7 patatoes for 84 pesos, how many patatoes can he buy for 144 pesos?

Aleksandr-060686 [28]

Answer:

12 patatoes

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Because of the unique line postulate, we can draw unique line segment PM. Using the definition of reflection, PM can be reflecte

Karolina [17]

By the definition of reflection, point P is the image of itself and point N is the image of<u> Point M. </u>

<u></u>

<h2 /><h2>Given that</h2>

Because of the unique line postulate, we can draw a unique line segment PM.

Using the definition of reflection, PM can be reflected over line l.

By the definition of reflection, point P is the image of itself and point N is the image of ________.

Because reflections preserve length, PM = PN. Point M point Q segment PM segment QM.

<h3></h3><h3>According to the question</h3>

P is a point on the perpendicular bisector, l, of MN.

A Reflection is a transformation in which the figure is the mirror image of the other.

Every point is a mirror reflection of itself.

By the definition of reflection, point P is the image of itself, point N is the image of M.

Line l acts as a Line of symmetry or axis of reflection.

Reflections preserve length so PM = PN.

By the definition of reflection, point P is the image of itself and point N is the image of<u> Point M. </u>

Because reflections preserve length, PM = PN.

Point M point Q segment PM segment QM.

Hence, point N is the image of M.

To know more about Reflection click the link given below.

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3 years ago

assume a telephone signal travels through a cable at two-thirds the speed of light. how long does it take the signal to get from

Helen [10]

The time length for a sign to travel from new york to Miami is 0.089 seconds.

We understand the speed of mild in miles per 2nd is 186,000.

the rate of smartphone signal is 2/3rd is =2/3rd of 186,000

= 124,000 miles in line with 2nd

Distance among Miami and new york is given to be 1100 miles.

So, the time required to journey the phone signal from new york city to Miami is = distance ÷ speed

= 1100 ÷ 124,000

=0.089 seconds

Time taken via the telephone sign from Miami to new york is 0.089 seconds.

To learn more about the speed distance concept visit the link: brainly.com/question/28224010

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4 0

2 years ago