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3 years ago

Determine if each pair of ratios are equivalent

1 answer:

6 0

The ratios are NOT equivalent.
If you divide 220 by 80 it gives you 2.75, and if you divide 25 by 10 it gives you 2.5. Are the answers the same? No. For the ratios to be equal, you need the answers to be the same.

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URGENT!!!! WILL GIVE BRANLIEST PLS HELP OR AT LEAST TAKE A LOOK!! I HAVE LESS THEN 10 MINUTES LEFT PLS!!!! IM LOOSING HOPE! SHAR

Sindrei [870]

Answer:

Step-by-step explanation:

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4 0

4 years ago

A recipe needs 3/4 cup of water for every 2 cups of flour. If you to use 6 cups of flour, how much water will you need?

Diano4ka-milaya [45]

Answer:

2 1/4 or 2.25

Step-by-step explanation:

2*3= 6

3/4*3= 2 1/4

4 0

3 years ago

A competitive knitter is knitting a circular place mat. The radius of the mat is given by the formula

Ilia_Sergeevich [38]

Answer: A. $A'(t)=\frac{4356\pi}{(t+11)^{3}}-\frac{527076\pi}{(t+11)^{5}}$

B. A'(5) = 1.76 cm/s

Step-by-step explanation: Rate of change measures the slope of a curve at a certain instant, therefore, rate is the derivative.

A. Area of a circle is given by

$A=\pi.r^{2}$

So to find the rate of the area:

$\frac{dA}{dt}=\frac{dA}{dr}.\frac{dr}{dt}$

$\frac{dA}{dr} =2.\pi.r$

Using $r(t)=3-\frac{363}{(t+11)^{2}}$

$\frac{dr}{dt}=\frac{726}{(t+11)^{3}}$

Then

$\frac{dA}{dt}=2.\pi.r.[\frac{726}{(t+11)^{3}}]$

$\frac{dA}{dt}=2.\pi.[3-\frac{363}{(t+11)^{2}}].\frac{726}{(t+11)^{3}}$

Multipying and simplifying:

$\frac{dA}{dt}=\frac{4356\pi}{(t+11)^{3}} -\frac{527076\pi}{(t+11)^{5}}$

The rate at which the area is increasing is given by expression $A'(t)=\frac{4356\pi}{(t+11)^{3}} -\frac{527076\pi}{(t+11)^{5}}$ .

B. At t = 5, rate is:

$A'(5)=\frac{4356\pi}{(5+11)^{3}} -\frac{527076\pi}{(5+11)^{5}}$

$A'(5)=\frac{4356\pi}{4096} -\frac{527076\pi}{1048576}$

$A'(5)=\frac{2408693760\pi}{4294967296}$

$A'(5)=1.76268$

At 5 seconds, the area is expanded at a rate of 1.76 cm/s.

5 0

3 years ago

Identifique el valor atípico en la siguiente lista. Luego encuentre la media y la mediana de la lista con y sin el valor atípico

Tju [1.3M]

Translate to English and I can help u, if I were to give u a answer it would be -8.5 based on the stuff given

3 0

3 years ago

The diameter (d) of a circle with a circumference of 440 cm is: Use Π = 22/7

elena-s [515]

Answer:

Step-by-step explanation:

c=2*22/7r

440=44/7r

440*7/44=r

70=r

d=2r

d=2*70

d=140 cm

5 0

2 years ago

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