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mixer [17]
2 years ago
10

Help ! If you're not starbright , please do not answer or i'll report , but if you have the right answer with correct proof , yo

u won't get reported ! ​

Mathematics
1 answer:
Juliette [100K]2 years ago
5 0

Answer:

Step-by-step explanation:

1) So -8+2v<2, 2v<10, v<5. That means that at "5" on the axis, you'll draw a circle that's <em>not</em> filled in (because it's <5, not \leq5) and then draw a box-y thing to the left. Sorry, can't really describe it, but if you look at the picture attached, you'll understand

2) -12m-8\leq-5m-7m, so -12m-8\leq-12m, -8\leq0. This one doesn't have a variable... so you can't really graph it?

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Rueben has some photographs printed. The cost is £1.50 for postage and 15p for each print. The total cost for Rueben is £3.90. H
vampirchik [111]

Answer:10

Step-by-step explanation:if i did this right you just do 15 divided by 1.50 and you get 10

3 0
2 years ago
Given the function f(x) = x2 and k = 3, which of the following represents the graph becoming more narrow?
Bess [88]
Functions A and C and D are translations - this means that they are exactly the same shape as f(x), but are displaced on the axes. A translation in the y-direction by k units is represented by f(x) + k, and a translation in the x-direction by k units is represented by f(x - k). This can be summarised in column vector notation:

A translation of the graph y = f(x), by the vector \left[\begin{array}{ccc}a\\b\end{array}\right] results in the graph defined by y - b = f(x - a). This is done by replacing x with (x - a) and y with (y - b). Finally it is rearranged to make y the subject, as is often the convention: y = f(x - a) + b.

Since the graph needs to change shape, this requires a 'stretch'. A stretch is performed by multiplying x or y by a constant, which here is k.

To stretch in the x-direction by a factor n, replace x with (1/n)x. Similarly to stretch in the y-direction by a factor n, replace y with (1/n)y.

For example to stretch y = f(x) by factor n in the x-direction, it would become y = f((1/n)x).

A simple quadratic graph like y = x^2 behaves slightly differently to most other graphs, in that it can narrowed by a stretch in the x or y direction. This means that a more convenient option is to perform a stretch in the y direction, since the multiplier lies outside the function notation. The stretching factor is 3, so we replace y with (1/3)y:

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Since k = 3, this becomes

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... and hence the correct answer is B
6 0
3 years ago
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Answer:

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Step-by-step explanation:

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3 years ago
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Compound interest and how to graph the equation.
lesya [120]
I think it’s A because it matches with the graph
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2 years ago
Is (2,2) a solution of the system
pashok25 [27]

Answer:

Hi, you don't provide us with the system here...

to figure out if 2,2 is a solution of the system, you have to plug the value of 2 in for both x and y in the system, and solve to see if it comes out or not...

If you provide the system I can definitely help you out more specifically!

3 0
3 years ago
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