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1 year ago

PLEASE HELPPP ITS WORTH 20 points!!!

Mathematics

1 answer:

Oksana_A [137]1 year ago

3 0

Answer:

tanD =4/7

Step-by-step explanation:

tanD = P/B

Where P=4 and B=7

So;

tanD=4/7

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A store sells notebooks for $3 each and does not charge sales tax. If x represents the number of notebooks Adele buys and y repr

Evgen [1.6K]

Answer:

uyyy dos es en ingles pailas

3 0

2 years ago

Read 2 more answers

R = sec(θ) − 2cos(θ), where -π/2 < θ < π/2

Alex

Answer:

y = (x/(1-x))√(1-x²)

Step-by-step explanation:

The equation can be translated to rectangular coordinates by using the relationships between polar and rectangular coordinates:

x = r·cos(θ)

y = r·sin(θ)

x² +y² = r²

r = sec(θ) -2cos(θ)

r·cos(θ) = 1 -2cos(θ)² . . . . . . . . multiply by cos(θ)

r²·r·cos(θ) = r² -2r²·cos(θ)² . . . multiply by r²

(x² +y²)x = x² +y² -2x² . . . . . . . substitute rectangular relations

x²(x +1) = y²(1 -x) . . . . . . . . . . . subtract xy²-x², factor

y² = x²(1 +x)/(1 -x) = x²(1 -x²)/(1 -x)² . . . . multiply by (1-x)/(1-x)

$\boxed{y=\dfrac{x\sqrt{1-x^2}}{1-x}}$

The attached graph shows the equivalence of the polar and rectangular forms.

4 0

2 years ago

Please help me at this wit steps how did you did it

balu736 [363]

Answer:

5. LCM of 7 and 14: 14.

multiples of 7: 7, 14

multiples of 14: 14

LCM of 8 and 12: 24.

multiples of 8: 8, 16, 24

multiples of 12: 12, 24

Step-by-step explanation:

$.$

5 0

2 years ago

Please give a good answer :)

Alex

Answer:

P(4≤x≤7) = 2/3

Step-by-step explanation:

We'll begin by obtaining the sample space (S) i.e possible outcome of rolling both dice at the same time. This is illustrated below:

1,1 1,2 1,3 1,4 1,5 1,6

2,1 2,2 2,3 2,4 2,5 2,6

3,1 3,2 3,3 3,4 3,5 3,6

4,1 4,2 4,3 4,4 4,5 4,6

5,1 5,2 5,3 5,4 5,5 5,6

6,1 6,2 6,3 6,4 6,5 6,6

Adding the outcome together, the sample space (S) becomes:

2 3 4 5 6 7

3 4 5 6 7 8

4 5 6 7 8 9

5 6 7 8 9 10

6 7 8 9 10 11

7 8 9 10 11 12

Next, we shall obtain the event of 4≤x≤7. This is illustrated below:

4 5 6 7

Finally, we shall determine P(4≤x≤7). This can be obtained as follow:

Element in the sample space, n(S) = 36

Element in 4≤x≤7, n(4≤x≤7) = 24

Probability of 4≤x≤7, P(4≤x≤7) = ?

P(4≤x≤7) = n(4≤x≤7) / nS

P(4≤x≤7) = 24/36

P(4≤x≤7) = 2/3

4 0

2 years ago

Can someone help me find the area of this circle and round to the nearest tenth

larisa [96]

the circle has a diameter of 12, thus its radius is half that, or 6.

$\bf \textit{area of a circle}\\\\ A=\pi r^2~~ \begin{cases} r=radius\\[-0.5em] \hrulefill\\ r=6 \end{cases}\implies A=\pi 6^2\implies A=36\pi \\\\\\ A \approx 113.0973355\implies A=\stackrel{\textit{rounded up}}{113.1}$

8 0

3 years ago