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Dennis_Churaev [7]
2 years ago
5

Q11 The price of a smartphone is $600 and a smart watch is $250. If you buy them together you get a discount of 20%. If you deci

de to buy both, how much will you end up paying?
Q12Another store is offering the smart watch for $100 if purchased with the smartphone. Is this a better deal than the previous one (Q11)?
Mathematics
2 answers:
dimulka [17.4K]2 years ago
4 0

Answer:

above is the solution to the question

Iteru [2.4K]2 years ago
4 0

Answer:

Yes, the deal for Q12 is better than the previous one.

Step-by-step explanation:

600 + 250 = 850

850 × 20 = 17000

17000 / 100 = 170

850 - 170 = 680 He will pay $680 (Q11)

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What is 0.75 as the lowest possible fraction?
elena-s [515]
The lowest possible fraction is 3/4 because 0.75=75/100 then you divide both terms by 25 and get 3/4

3 0
3 years ago
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A projectile is launched from the ground at an angle of theta above the horizontal with an initial speed of v in​ ft/s. The rang
VARVARA [1.3K]

Answer:

\theta=24.4^\circ

Step-by-step explanation:

The formula you wrote has the fraction the other way around. You can find that the range​ of a projectile is in reality approximated by the equation x=\frac{v^2}{g} sin(2\theta)=\frac{v^2}{32ft/s^2} sin(2\theta), where we will use ft for distances.

From the given equation we have then \frac{x32ft/s^2}{v^2} =sin(2\theta), which means \theta=\frac{Arcsin(\frac{x32ft/s^2}{v^2})}{2} since the arcsin is the inverse function of the sin.

Since we have x = 170 ft and  v = 85 ft/s, we can substitute these values from the equation written, and we will have \theta=\frac{Arcsin(\frac{(170ft)(32ft/s^2)}{(85ft/s)^2})}{2}, and from now on we have just to use a calculator, obtaining \theta=\frac{Arcsin(0.75294117647)}{2}=\frac{48.84579804^\circ}{2}=24.4^\circ

3 0
3 years ago
Tom wants to buy 10 shirts.
cupoosta [38]

Answer:

$109.99

Step-by-step explanation:

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6 0
3 years ago
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Choose the correct simplification of 8x2(4x 2x2 − 1). (5 points) group of answer choices 32x4 − 16x3 8x2 32x4 16x3 − 8x2 16x4 −
nekit [7.7K]

The second option is the correct answer

16x^{4}+40x^{3} -24x^{2}

The expression given to us is:

8x^{2} (5x+2x^{2}-3 )

Herein, we can simplify it by opening up the bracket and multiplying each term inside the bracket by the term which is outside the bracket.

Thus, we get:

8x^{2} (5x+2x^{2}-3 )=8*5x^{2+1} +8*2x^{2+2}-8*3x^{2}

40x^{3} +16x^{4}-24x^{2}

Rearranging the above expression in descending order of power we get:

16x^{4}+40x^{3} -24x^{2}

From the given options we can see this is the second option. Hence the second option is the correct answer.

Learn more about equation here brainly.com/question/14180340

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8 0
2 years ago
Tim is 35 years old. He is 7 years younger than 6 times his daughter's age. The equation,
Oksana_A [137]

Answer:

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Step-by-step explanation:

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2 years ago
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