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4 years ago

Paula has 60 stamps in her collection. Among her stamps,

Mathematics

1 answer:

inysia [295]4 years ago

8 0

Answer:

5 stamps

Step-by-step explanation:

First, you need to figure out how many stamps have pictures of animals. You do this by multiplying your total number of stamps (60) by 1/3 (or you could also divide it by 3).

60 x 1/3 = 20

Now that you know there are 20 animal stamps, you need to figure out how many of them have birds on them. You do this by multiplying your number of animal stamps (20) by 1/4 (or you could divide it by 4).

20 x 1/4 = 5

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Y = 1.10x + 5.00 <br> y = 1.50x + 3.00<br> (substitution)

nataly862011 [7]

Solving the system of equations $y = 1.10x + 5.00\\y = 1.50x + 3.00$ we get x=5 and y=10.5

Step-by-step explanation:

We need to solve the system of equations by substitutions.

The system of equations given are:

$y = 1.10x + 5.00\\y = 1.50x + 3.00$

Let:

$y = 1.10 x+5.00\,\,eq(1)\\y = 1.50 x+ 3.00\,\,eq(2)$

Putting value of y from eq(2) into eq(1)

$1.50 x+ 3.00=1.10 x+5.00\\1.50 x-1.10 x=+5.00-3.00\\0.4x=2.00\\x=2.00/0.4\\x=5$

So, value of x=5

Now putting value of x in eq 1 to find value of y:

$y = 1.10x + 5.00$

$y = 1.10(5) + 5.00$

$y = 5.5 + 5.00$

$y = 10.5$

So, value of y is 10.5

Solving the system of equations $y = 1.10x + 5.00\\y = 1.50x + 3.00$ we get x=5 and y=10.5

Keywords: System of equations

Learn more about system of equations at:

#learnwithBrainly

4 0

3 years ago

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Ben is 12 years older than Ishaan. Ben and Ishaan first met two years ago. Three years ago, Ben was 4 times as old as Ishaan.

Nitella [24]

Let x be the age of ishaan so the age of ben will be 12+x. the equation will become x=x+12
Going 3 years back, the age of ishaan was x-3 so that of ben would be x+12-3 before 3 years. at that time the age of ben was 4 times the age of ishaan. it means x+12-3(the age of ben)=4(x-3(the age of ishaan))
solving this equation, we get the answer x=7. this is the age of ishaan in the present.

5 0

3 years ago

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Jada has picked 1 cup of strawberries for a cake, which is enough for ¾ of the cake. How many cups does she need for the whole c

Stolb23 [73]

She needs 1/4 more or .25cup more for the whole cake

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3 years ago

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$8000 at 3% annually for 4 years

Nonamiya [84]

Here's the equation for one year:
0.03(8000) + 8000
For four years:
4(0.03(8000)) + 8000
0.12(8000) + 8000
To make it simpler/smaller:
1.12(8000) = 8960
You can make 960 more dollars, and you now have $8960

7 0

3 years ago

I don’t know how to explain on why the student was incorrect

Zolol [24]

Answer:

the constant proportionality means the ratio between two directly proportional quantities.

so the constant proportionality will be 7.5÷6=1.25 or 10÷8=1.25 or 12.5÷10=1.25

constant proportionality should be same all through because it's a constant

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3 years ago