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Alinara [238K]
3 years ago
9

Set up equations and solve.

Mathematics
1 answer:
zavuch27 [327]3 years ago
3 0
One weights 30lbs the other weights 54lbs
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lliana’s math grade increased from 65 to 86. Fiona’s math grade increased from 70 to 80. What is the difference, rounded to the
Juliette [100K]
Okay. Let us do it surgically. Let us solve first the rate of increase in Lliana's Math grade. 86-65 = 21, thus the rate can be written as a fraction 21/65. We will reserve the decimal form once we are done with both rates of increase.

On the same note, Fiona's increase in Math grade is determined by subtracting 70 from her recent grade of 80, thus giving us an increase in her grade by 10. Therefore, the rate of increase in her Math grade is 10/70.

Now, let us take the decimal forms of the students' grade in math respectively. Lliana's is 21/65 or 0.32307692307... Fiona's is 10/70 or 0.14285714285. Now, subtracting this decimals we have 0.18021978021.
Changing it to percent form, we must multiply it by 100 and add the symbol "%". Therefore, we have 18.021978021 %.

Finally, rounding the value to the nearest whole number, we obtained 18.00% or just 18%.
8 0
4 years ago
Felipe just started collecting stamps. he has 36 stamps so far. His uncle Caro has 1,890 stamps in his collection. The number of
Dmitrij [34]

Answer:

52.5

Step-by-step explanation:

just divide bro it ain't that hard

7 0
2 years ago
5 x - 2y equals 10 ; (3,-5)
Sedbober [7]
5(3)-2(-5)
15-(-10)
25
5 0
3 years ago
Zoe wants to buy a pet rabbit that costs $242. She already has $62 saved and plans to save $12 per week. What equation represent
fredd [130]

Answer: 62+12w=242

Step-by-step explanation:

62+12w=242 is the equation

Solve

62+12w=242

12w=180

w=15

It will take 15 weeks for Zoe to make enough money

4 0
3 years ago
Since Neil Armstrong was the first person to walk on the. moon, the contrapositive is
Romashka-Z-Leto [24]

Answer:

If nobody walked on the moon, then Neil Armstrong didn't

Step-by-step explanation:

The contrapositive flips the sign of "Neil Armstrong"  and the "moon," and also switches their position, so you will switch the hypothesis and conclusion as well

7 0
3 years ago
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