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Tasya [4]
3 years ago
13

Expressions  with mixed operations Evaluate. 2.3+3.7-2/27.5-4*5.625

Mathematics
1 answer:
masya89 [10]3 years ago
5 0
2.3+3.7-2/27.5-4*5.625. use pedmas.
=appromaxietly -16.57

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What is the algebraic representation of 3 times the difference of a number and 5
ki77a [65]
" the difference"  means subtract

3(n - 5) <== ur expression
6 0
3 years ago
How many ball bearings, each with a diameter of 1 cm, can be made using 5.24 cm3 of molten steel? A) 4. B) 7. C) 8. D) 10
Bingel [31]
First, solve for the volume of the ball bearings by the equation,
                                     V = πd³ / 6
Substituting the value of diameter given,
                              V = π(1 cm)³ / 6 = π/6 cm³ = 0.5236 cm³
Divide the amount of material given by this volume,
                                     n = 5.24 cm³ / <span>0.5236 cm³ = 10
Therefore, there are 10 ball bearings that may be formed.</span>
4 0
3 years ago
Samantha bought 26 total fish. Each goldfish cost $3 and each guppy costs $4. She spent $86 total. How many guppies did she buy?
Alex787 [66]

Answer:

goldfish is 15 and guppies is 11

Step-by-step explanation:

Given data

let the number of goldfish be x

and the number of guppies be y

so

x+y= 25----------1

and

3x+4y= 86-------2

solve 1 and 2

x+y= 25

3x+4y= 86

from 1

x= 25-y

put this in 2

3(25-y)+4y= 86

75-3y+4y= 86

75+y= 86

y= 86-75

y=11

put y= 11 in 1

x+11= 26

x= 26-11

x= 15

Hence goldfish is 15 and guppies is 11

5 0
2 years ago
If a rate is $56 per 7 hours is reduced to a unit rate, results is . do not include units in your answer
DiKsa [7]
You'd probably need to divide 56 by 7 which gives you 8
6 0
3 years ago
The number of marriage licenses issued by Clark County Nevada, the county where Las Vegas is located, has been
REY [17]

The number of marriage licenses were issued in 2003 is 21586.

According to the statement

we have to find the number of marriage licenses were issued in 2003

and the given equation is y=3.405x^2-17674x+21533000

And in this equation x represent the time

And Y represent the number of marriage certificate issued.

So, in given equation

y=3.405x^2-17674x+21533000

we fill the value of X and find the value of Y means tne number of marriage license is issued in 2003

We know that X = 3 from 2000 to 2003

Then put X=3 in the given equation.

Then

This is the equation (1) represent the change

y=3.405(3)^2-17674(3)+21533000 -(1)

y = 30.645+53022+21533000

y = 21586052.645

On nearest hundred the value becomes 21586.

So, The number of marriage licenses were issued in 2003 is 21586.

Learn more about NUMBERS here brainly.com/question/1770447

DISCLAIMER: The question was incomplete. please find the full content below.

QUESTION:

According to the model, how many marriage licenses were issued in 2003? Round your answer to the nearest hundred.

The number of marriage licenses issued by Clark county Nevada, the county where Las Vegas is located, has been decreasing since the year 2000. This can be modeled by y=3.405x^2-17674x+21533000 where x is the year and y is the number of marriage licenses issued.

#SPJ1

5 0
2 years ago
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