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3 years ago

I don’t get this question. Please help me answer is.

Mathematics

2 answers:

Svetlanka [38]3 years ago

7 0

Answer:

5x ^ 2

Step-by-step explanation:

dolphi86 [110]3 years ago

4 0

Answer:

x^2*5

Step-by-step explanation:

A square is to the power of 2, so it says of a number x. So it would be x^2, then you just multiply by 5. Hope it's right.

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Tiffany earned a 90% on her math test. There were 50 questions on the test. How many questions did Tiffany answer correctly?

stellarik [79]

45/50
45 divided by 50 = 0.9
90%

3 0

3 years ago

Does this graph show a function? Explain how you know.

LenKa [72]

Answer:

We can determine if the graph shows a function by using the vertical line test.

If we draw a vertical line and there are 2 or more points on that line than the graph is not a function. This is because each x value has one corresponding y value. If an x value has more corresponds to more than one y value than the relation is not a function.

If we were to draw a vertical line at x = 5, 2 points would be one that line meaning that the x value 5 corresponds to more than 1 y value, therefore the graph does not show a function.

7 0

3 years ago

Please help me with this problem

My name is Ann [436]

Answer:

$6A- 8B = \left[\begin{array}{ccc}56&50&-14\\-126&92&62\\-78&26&2\end{array}\right]$

Option A is correct.

Step-by-step explanation:

$A=\left[\begin{array}{ccc}-4&-1&-9\\-9&6&9\\-1&-1&3\end{array}\right] \\B=\left[\begin{array}{ccc}-10&-7&-5\\9&-7&-1\\9&-4&2\end{array}\right]$

We need to find 6A - 8B

Multiply matrix A with 6 and matrix B with 8 and then subtract 6A - 8B

$6A=\left[\begin{array}{ccc}-24&-6&-54\\-54&36&54\\-6&-6&18\end{array}\right] \\8B=\left[\begin{array}{ccc}-80&-56&-40\\72&-56&-8\\72&-32&16\end{array}\right]\\6A - 8B =\left[\begin{array}{ccc}-24-(-80)&-6-(-56)&-54-(-40)\\-54-(72)&36-(-56)&54-(-8)\\-6-(72)&-6-(-32)&18-(16)\end{array}\right] \\6A - 8B =\left[\begin{array}{ccc}-24+80&-6+56&-54+40\\-54-72&36+56&54+8\\-6-72&-6+32&18-16\end{array}\right] \\6A- 8B = \left[\begin{array}{ccc}56&50&-14\\-126&92&62\\-78&26&2\end{array}\right]$

So, $6A- 8B = \left[\begin{array}{ccc}56&50&-14\\-126&92&62\\-78&26&2\end{array}\right]$

Option A is correct.

3 0

3 years ago

-12=5r+8 what the equation

zloy xaker [14]

Answer:8

Step-by-step explanation:

6 0

4 years ago

PLEASE HELP!! THIS IS CONFUSING!! Given f (x) = 2/3x -1, complete Parts A and B. Part A: Using the table provided, create five p

sattari [20]

You did not provide a table however I used
x y
0 -1
3 1

(I tried to make a table above with x,y)

The x intercept is (3/2, 0)
The y intercept is (0, -1)
Slope 2/3
See pic for graph

5 0

3 years ago