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3 years ago

Which rate is a unit rate?

2 answers:

7 0

The 3rd option (500m/1gal) is the correct answer.

A unit rate is the cost or amount of something per ONE object. So with this we already eliminate the 1st and 4th option. Next, I guess technically both could be considered a unit rate but the 3rd one is for sure an example of a unit rate.

Hope this helped!

Lena [83]3 years ago

3 0

Your answer would be B, $12/ 1 hour

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Y = 3x - 8 y = 4 - X

mihalych1998 [28]

Answer:

Step-by-step explanation:

Using substitution method.

y = 3x - 8 -------(i)

y = 4 - x -------- (ii)

Substitute y = 3x-8 in equation (ii)

3x - 8= 4 - x {Add x to both sides}

3x - 8 + x = 4 - x +x

4x - 8 = 4 {Add 8 to both sides}

4x = 4 + 8

4x = 12 {Divide both sides by 4}

x = 12/4

x = 3

Substitute x = 3 in Equation (i)

y = 3*3 - 8

y = 9 - 8

y = 1

5 0

3 years ago

A jewelry store has 212.75 ounces of 14-carat gold in stock. (a) how many custom necklaces can be manufactured if each requires

Nonamiya [84]

Answer:

a. The number of custom necklaces that can be manufactured if each requires 2 7/8 ounces of gold is 74 necklaces.

b. The value of the gold in each necklace is $1761

Step-by-step explanation:

(a) Number of necklaces

2 $7/8$ ounces of gold=2.875

No of necklaces=212.75oz x 1 necklaces/2.875oz

=74 necklaces

(b)Value of gold in each necklace

There are 2.875 oz of 14K gold in each necklace. Pure gold is 24K.

Mass of pure gold=2.875oz x 14k/24k

=1.677083oz

Pure 24K gold is worth $1050/oz.

Value of pure gold=1.677oz x 1050/1oz

= 1760.9 dollars

The value of the gold in each necklace is $1761

#SPJ4

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6 0

1 year ago

Read 2 more answers

70%of it is 14 min find the valy ofx

astra-53 [7]

Note:

Your questions sound a little unclear.

But, I am assuming your questions as:

''70% of x is 14 min. Find the value of x''.

So, I will solve assuming this statement which anyways would clear your concept.

Answer:

The value of x = 20.

Step-by-step explanation:

Given

''70% of x is 14 min. Find the value of x''.

Thus,

70% of x = 14

70/100 × x = 14

0.7x = 14

divide both sides by 0.7

0.7x/0.7 = 14/0.7

x = 20

Therefore, we conclude that the value of x = 20.

3 0

3 years ago

Why does a nail stick to a magnet?

sergij07 [2.7K]

The nail will stick to the magnet because it will become magnetized.Also because the north pole in the magnet rearranges the magnet domains inside the steel so that their south poles all point toward the north pole of the permanent magnet

7 0

3 years ago

Read 2 more answers

Allison ate 7 of her 20 apples. What percent of the apples did she eat?

Brrunno [24]

Answer:

Percentage of apples ate by Alison = 35 %

Explanation:

Percentage of a process = (Number of process in favor / Total number of processes) x 100

Total number of apples in the hand of Alison = 20

Total number of apples ate by Alison = 7

Percentage of apples ate by Alison = ( Total number of apples ate by Alison/Total number of apples in the hand of Alison) x 100

$=\frac{7}{20} *100=35%$

Percentage of apples ate by Alison = 35 %

3 0

3 years ago