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yulyashka [42]
4 years ago
6

Laura ordered a set of blue and black pencils. She received 110 pencils,21% of then were black. About how many blue pencils did

Laura receive
Mathematics
1 answer:
quester [9]4 years ago
5 0
  x       21
----- = -----
110    100

Cross multiplication:
110 x 21 / 100

= 23.1
About 23 of the pencils are blue.

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seropon [69]

Answer:

Step-by-step explanation:

So in ratios you can mostly all of the time scale your answer. So by determining how much increase there is in the baby's thigh bone each week you can pretty much answer these questions.

keep in mind: Proportional means having the same ratio. A scale factor is the ratio of the model measurement to the actual measurement in simplest form.

Example from https://www.mathsisfun.com/numbers/ratio.html

A ratio says how much of one thing there is compared to another thing.

ratio 3:1

There are 3 blue squares to 1 yellow square

Ratios can be shown in different ways:

Use the ":" to separate the values:   3 : 1

     

Or we can use the word "to":   3 to 1

     

Or write it like a fraction:    31  

A ratio can be scaled up:

ratio 3:1 is also 6:2

Here the ratio is also 3 blue squares to 1 yellow square,

even though there are more squares.

6 0
3 years ago
An 8th-grade class washed cars and pets to raise money for a children’s hospital. They charged $10 to wash a car and $5 to wash
aliina [53]

Answer:

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Step-by-step explanation:

the answer is 780

7 0
3 years ago
Determine if the expression 4b^4+c+c^34b 4 +c+c 3 is a polynomial or not. If it is a polynomial, state the type and degree of th
Helen [10]

Answer:

correct

Step-by-step explanation:

great job,

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4 0
3 years ago
(look at the pictures)
-BARSIC- [3]

Step-by-step explanation:

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the slope = 3

based on the value of the slope, the function B has a greater rate of change

8 0
3 years ago
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3 years ago
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