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4 years ago

8.2g-2.7g-9.7g? What is the answer

Mathematics

2 answers:

Dima020 [189]4 years ago

4 0

8.2g-2.7g-9.7g=-4.2g
hope this helps

VladimirAG [237]4 years ago

4 0

Combine like terms

8.2g - 2.7g - 9.7g = 5.5g - 9.7g = -4.2g

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Show work please! And thanks

In-s [12.5K]

12x+1+5x-3=117
(combine like terms)
17x-2=117
(subtract 2 from each side)
17x=115
(divide each side by 17)
x=6.7

8 0

3 years ago

Read 2 more answers

100 POINTS!!!!!

Oksanka [162]

Answer:

a. Ratio of their circumference = 2:3

b. The ratio of their surface areas = 2:3

c. The ratio of their volume = 4:9

Step-by-step explanation:

Let the cylinders be labelled as A and B respectively.

Diameter of cylinder A = 6 in,

its radius = $\frac{diameter}{2}$

= $\frac{6}{2}$ = 3 in

Diameter of cylinder B = 9 in,

its radius = $\frac{diameter}{2}$

= $\frac{9}{2}$ = 4.5 in

Thus,

a. circumference of a circle = 2 $\pi$ r

Circumference of cylinder A = 2 $\pi$ r

= 2 x $\pi$ x 3

= 6 $\pi$ in

Circumference of cylinder B = 2 $\pi$ r

= 2 x $\pi$ x 4.5

= 9 $\pi$

Ratio of their circumference = $\frac{circumference of cylinder A}{circumference of cylinder B}$

= $\frac{6\pi }{9\pi }$

= 2:3

b. The surface area of a cylinder = 2 $\pi$ rh

the surface area of cylinder A = 2 $\pi$ rh

= 6 $\pi$ h

the surface area of cylinder B = 2 $\pi$ rh

= 9 $\pi$ h

The ratio of their surface areas = $\frac{surface area of cylinder A}{surface area of cylinder B}$

= $\frac{6\pi h}{9\pi h}$

= 2:3

c. Volume of a cylinder = $\pi$ $r^{2}$ h

volume of cylinder A = $\pi$ $r^{2}$ h

= $\pi$ x $3^{2}$ x h

= 9 $\pi$ h

volume of cylinder b = $\pi$ $r^{2}$ h

= $\pi$ x $4.5^{2}$ x h

= 20.25 $\pi$ h

The ratio of their volume = $\frac{volume of cylinder A}{volume of cylinder B}$

= $\frac{9\pi h}{20.25\pi h}$

= 4:9

6 0

3 years ago

Limit question thing plz help me

Sphinxa [80]

Answer:

The limit does not exist

Step-by-step explanation

For this question you have to look at the function and see what y value does it approach as it gets closer and closer to x =2, from the left side it looks like it approaces 4 and from the left side it looks like it's approaching 1, since the limits from the left and right sides are not the same, the limit does not exist

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3 years ago

Change 2.6 from decimal to fractions show explanation

noname [10]

Answer:

Step-by-step explanation:

The 2 in 2.6 is in the ones place so we know that it equals 200. The 6 in 2.6 is in the tenths place so we know that it equals 60. Add 200 with 60 to get 260/10. The denominator is 10 because 2.6 only extends to the tenths place.

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3 years ago

John davis, a manager of a supermarket, wants to estimate the proportion of customers who use food stamps at his store. he has n

8_murik_8 [283]

Answer:

1509

Step-by-step explanation:

We know that, formula for number of samples is,

$n= \frac{z^2 \times p \times q}{SE^2}$