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3 years ago

What has a better value .3 or .26

1 answer:

7 0

0.26 is the better and more accurate value as it has a more decimal point. However, if the question were to ask you to round to the nearest tenths, then 0.3 would be the better answer

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To the nearest millimeter, a cell phone is 90 mm long and 38 mm wide. What is the ratio of the width to the length? need answe

Vikentia [17]

38:90, or simplified as 19:45.

6 0

3 years ago

Find all points on the curve that have the given slope.x = 2cost, y= 8sint, slope =-1

tatuchka [14]

Answer:

$t_{1} = 0.422\pi \pm \pi\cdot i$ , $\forall \,i \in \mathbb{N}_{O}$

$t_{2} = 1.422\pi \pm \pi\cdot i$ , $\forall \,i \in \mathbb{N}_{O}$

Step-by-step explanation:

In the case of parametric equations, the slope of the curve is equal to:

$\frac{dy}{dx} = \frac{\frac{dy}{dt} }{\frac{dx}{dt} }$

Where $\frac{dx}{dt}$ and $\frac{dy}{dt}$ are the first derivatives of $x$ and $y$ regarding $t$ . Let be $x(t) =2\cdot \cos t$ and $y(t) = 8\cdot \sin t$ , their first derivatives are found:

$\frac{dx}{dt} = -2\cdot \sin t$ and $\frac{dy}{dt} = 8\cdot \cos t$

Thus, equation for the slope is:

$\frac{dy}{dx} = -\frac{8\cdot \cos t}{2\cdot \sin t}$

$\frac{dy}{dx} = -\frac{4}{\tan t}$

If $\frac{dy}{dx} = -1$ , then:

$-1 = -\frac{4}{\tan t}$

$\tan t = 4$

Tangent is positive at 1st quadrant and is a function with a periodicity of $\pi$ , the set of solutions are:

$t_{1} = 0.422\pi \pm \pi\cdot i$ , $\forall \,i \in \mathbb{N}_{O}$

$t_{2} = 1.422\pi \pm \pi\cdot i$ , $\forall \,i \in \mathbb{N}_{O}$

7 0

3 years ago

1. Line m does not intersect RS.

rjkz [21]

Answer:

I NEED MORE OF AN EXPLANATION

Step-by-step explanation:

SOORRYY

4 0

4 years ago

If a family of four pays $56.25 at a restaurant, how much would a family of six pay

grin007 [14]

Answer:

$84.38

Step-by-step explanation:

Assuming each member costs the same price, multiply by the fraction (6/4).

In other words, divide the total by 4 to get 1 person. Multipluy by 6 to see how much 6 people would cost.

56.25 x 6 = 337.5

337.5/4 = 84.375

6 0

4 years ago

Read 2 more answers

write the equation of the line that passes throughout (-1,5) and has a slope of 3 in point-slope form

SpyIntel [72]

The point-slope form is:
$y - k = m(x-h)$

So, here, you just plug in values:
$y - 5 = 3(x+1)$

It would be + 1 because remember, the '-' sign just means the opposite of, not subtraction in this case. Also, m = slope.

4 0

4 years ago

What has a better value .3 or .26￼

What has a better value .3 or .26