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3 years ago

Which fraction has a value less than 7/8 A. 11/11 B. 6/7 C. 11/12 D. 8/9

Mathematics

1 answer:

777dan777 [17]3 years ago

8 0

The answer is b because 6/7 = 48/56 and 7/8=49/56

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Heyyy.... can someone pls help asap. Rearrange the formula to write r in terms of P and pi.

bearhunter [10]

Step-by-step explanation:

p = 2r + pi×r

p = r(2 + pi)

r = p/(2 + pi)

6 0

1 year ago

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The wholesale price for a pair of shoes is $3.50. A certain department store marks up the wholesale price by 90%. Find the price

lubasha [3.4K]

Answer:

$6.75

Step-by-step explanation:

3.50 ÷ 10% = 3.15

3.50 + 3.15 = 6.75

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2 years ago

Are segments PQ and NM parallel?

katen-ka-za [31]

Answer:

no, i dont think so because parralel lines are this

Step-by-step explanation:

hope it helps

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2 years ago

To find the extreme values of a function f(x,y) on a curve xequalsx(t), yequalsy(t), treat f as a function of the single vari

pychu [463]

Answer:

Absolute maximum is 2

Absolute minimum at -2

Step-by-step explanation:

The given parametric functions are:

$x=2\cos t,y=2\sin t$

By the chain rule:

$f'(t)=\frac{\frac{dy}{dt} }{\frac{dx}{dt} }$

$\frac{df}{dt} =\frac{2 \cos t}{-2\sin t} =-\cot(t)$

At fixed points, $f'(t)=0$

$\implies -\cot (t)=0$

This gives $t=\frac{\pi}{2} ,\frac{3\pi}{2}$ on $0\le t\le 2\pi$

This implies that the extreme points are $(2\cos \frac{\pi}{2}, 2\sin \frac{\pi}{2})=(0,2)$ and $(2\cos \frac{3\pi}{2}, 2\sin \frac{3\pi}{2})=(0,-2)$

By eliminating the parameter, we have $x^2+y^2=4$

This is a circle with radius 2, centered at the origin.

Hence (0,2) is an absolute maximum ,at $t=\frac{\pi}{2}$ and (0,-2) is an absolute minimum at $t=\frac{3\pi}{2}$

7 0

2 years ago

On a compass, due east is a 1/4 turn clockwise from due north. How many degrees are in a 1/4 turn?

vladimir2022 [97]

Answer:

$90^o$

Step-by-step explanation:

We have been given that on a compass, due east is a 1/4 turn clockwise from due north.

Since we know that a compass is in form of a circle and the measure of degrees in a circle is 360 degrees.

To find the number of degrees in a one-fourth turn, we will divide 360 by 4.

$\text{Number of degrees in a 1/4 turn of compass}=\frac{360^o}{4}$

$\text{Number of degrees in a 1/4 turn of compass}=90^o$

Therefore, there are 90 degrees in a 1/4 turn of compass.

4 0

3 years ago

Read 2 more answers