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Alexus [3.1K]
4 years ago
15

Rico is trying to estimate 139 times 18?100 times 10=1,000

Mathematics
1 answer:
USPshnik [31]4 years ago
8 0
The quickest. easiest way is to round all digits to the nearest tenth:

140 x 20
= 2,800
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vitfil [10]

Answer:

second one

Step-by-step explanation:

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3 years ago
Q10: Determine the eccentricity, the type of conic, and the directrix for r = 11/6-5cos theta.
Marta_Voda [28]

Answer:

Eccentricity = 5/6

Type of conic section; Ellipse

Directrix; x = -11/5

Step-by-step explanation:

The first step would be to write the polar equation of the conic section in standard form by multiplying the numerator and denominator by 1/6;

r=\frac{\frac{11}{6} }{1-\frac{5}{6}cos theta }

The polar equation of the conic section is now in standard form;

The eccentricity is given by the coefficient of cos theta in which case this would be the value 5/6. Therefore, the eccentricity of this conic section is 5/6.

The eccentricity is clearly between 0 and 1, implying that the conic section is an Ellipse.

Since the conic section is in standard form, the numerator is the product of eccentricity and the value of the directrix, that is;

e*d = 11/6

5/6*d = 11/6

d = 11/5

Since the denominator has a minus sign then the ellipse opens towards the right and thus the equation of its directrix is;

x = -11/5

3 0
3 years ago
Read 2 more answers
What is Mary biking speed in miles per hour
Trava [24]

Answer:20

Step-by-step explanation: This is answer is 20 because you have to divide 10 1/2 to get your answer .

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3 years ago
One student says a decimal can reach one million. The other says it cannot how can he defend his claim.
Lena [83]
If the number is big enough there can be up to an infinite number of decimals

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3 years ago
The length, L, of a rectangle is 4 times its width, W. The perimeter of the rectangle is greater than 60
polet [3.4K]

Answer:

w> 6

Step-by-step explanation:

Let w= the width

Let 4w = length

So then your equation becomes

2(w) + 2(4w) >60

Distribute

2w+8w > 60

Combine like terms

10w > 60

Divide by 10

w > 6

7 0
3 years ago
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