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Alex777 [14]
3 years ago
13

Very confused & don't understand, if anyone can explain I appreciate it!

Mathematics
2 answers:
Usimov [2.4K]3 years ago
8 0
<span>oh i get it well to make two equations equal you have to find something that fits in x. you see the eqal sign? that is seperating the two equations that you have to make equal </span>
ch4aika [34]3 years ago
5 0
First thing is to distrubite 7x- to 3x+5 and then do the same to 1/2 to 8x+20. Then whatever you get isolate the variable by adding or subtrating and lastly ypu should get x=4
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Teresa's restaurant bill comes to $29.99 before tax.If the sales tax is 6.25% and she tips the waiter 20%, what is the total cos
Andre45 [30]
The total is $29.99. Tip is $5.98. Tax is $1.87. Total is $ 37.84.
3 0
3 years ago
Ten plus 6 times a number n is equal to 5 less<br> than the number n.
Gala2k [10]

Answer:

Step-by-step explanation:

10+6n=n-5

6n-n=-5-10

5n=-15

n=-3

7 0
3 years ago
A sphere and a cylinder have the same radius and height. The volume of the cylinder is . Amie found the volume of the sphere. He
dezoksy [38]

Amie's error while measuring the volume of a sphere is that <u>Amie should have multiplied 54 by 2/3</u>. Thus, the <u>first option</u> is the right choice.

In the question, we are given that a sphere and a cylinder have the same radius and height.

We assume the radius of the sphere to be r, and its height to be h.

Now, the height of a sphere is its diameter, which is twice the radius.

Thus, the height of the sphere, h = 2r

Given that the sphere and the cylinder have the same radius and height, the radius of the cylinder is r, and its height is 2r.

The volume of a sphere is given by the formula, V = (4/3)πr³, where V is its volume, and r is its radius.

Thus, the volume of the given sphere using the formula is (4/3)πr³.

The volume of a cylinder is given by the formula, V = πr²h, where V is its volume, r is its radius, and h is its height.

Thus, the volume of the given cylinder using the formula is πr²(2r) = 2πr³.

Now, to compare the two volumes we take their ratios, as

Volume of the sphere/Volume of the cylinder

= {(4/3)πr³}/{2πr³}

= 2/3.

Thus, the volume of the sphere/the volume of the cylinder = 2/3,

or, the volume of the sphere = (2/3)*the volume of the cylinder.

Given the volume of the cylinder to be 54 m³, Amie should have multiplied 54 by 2/3 instead of adding the two.

Thus, Amie's error while measuring the volume of a sphere is that <u>Amie should have multiplied 54 by 2/3</u>. Thus, the <u>first option</u> is the right choice.

Learn more about volumes at

brainly.com/question/12398192

#SPJ4

For the complete question, refer to the attachment.

6 0
2 years ago
In 1995, there were about 70,200 cats registered with the cat franciers association. Of these, about 44,700 were persians. What
Doss [256]

Answer:

reqired part of registered cats were persian=0.363247

Step-by-step explanation:

reqired part of registered cats were persian=\frac{70200-44700}{70200}

reqired part of registered cats were persian=\frac{25500}{70200}

reqired part of registered cats were persian=0.363247 answer

3 0
3 years ago
two nascar cars are racing around a 2 mile track. one car can complete a lap in 48 seconds, and the other car can complete one l
Citrus2011 [14]
Let's assume that the faster car has a 2 mile "head start".
The faster car is 1.2 times faster (48/40) than the slower car.
It will take five 2 mile trips to "catch" the other car.
Five 2 mile trips will take 5 * 40 seconds = 200 seconds.



6 0
3 years ago
Read 2 more answers
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