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Lena [83]
3 years ago
15

Please help me with this math assignment

Mathematics
2 answers:
MrRissso [65]3 years ago
6 0

Answer:

1)80%

2)210%

3)65%

4)105%

Effectus [21]3 years ago
5 0

Answer:

80%

210%

65%

105%

Step-by-step explanation:

To solve for each of these equations, let's make them fractions first. The denominator will be 20 since that was the goal.

Elena did \frac{16}{20} pushps.

Jada did \frac{42}{20\\} pushups.

Lin did \frac{13}{20} pushups.

Andre did \frac{21}{20} pushups.

To convert this to percentages, let's multiply each by fraction by \frac{5}{5}. This will give us a denominator of 100. The denominator will represent the percentage.

Elena did \frac{16}{20} × \frac{5}{5} = \frac{80}{100} pushps. Elena did 80 percent of the pushups.

Jada did \frac{42}{20\\} × \frac{5}{5} = \frac{210}{100} pushups. Jada did 210 percent of the pushups.

Lin did \frac{13}{20} × \frac{5}{5} = \frac{65}{100} pushups. Lin did 65 percent of the pushups.

Andre did \frac{21}{20} × \frac{5}{5}  = \frac{105}{100} pushups. Andre did 105 percent of the pushups.

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VLD [36.1K]
If you were to solve this equation you would get answers of x=-2 and x=-8

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4 years ago
Which ordered pair is a solution of the equation?<br> y = -6x+1
alekssr [168]

Answer:

2,-11

Step-by-step explanation:

create an x/y table and plug in #s for ordered pairs

-6x + 1 = y [plug in 2 for x]

-12 + 1 = -11 [ordered pair is 2, -11]

7 0
3 years ago
Read 2 more answers
a truck that can carry no more than 6400 lb is being used to transport refrigerators and upright pianos. Each refrigerator weigh
Tems11 [23]
I'm not going to do the entire question, but I'll do the first part.

For the first part, you have to set up an inequality. Use context clues, such as no more than (the one used in this sentence) to figure out what the symbol should be for the inequality.
In this case, because it is NO MORE THAN 6400, it would be:

6400\leq250r + 475p

where r represents the # refrigerators, and p represents the # pianos


Now that you have the equation, make the graph, then for the 3rd part, plug in 12 and 8 to r and p to see if it keeps the inequality true.

Hope this helps! :)
7 0
3 years ago
Read 2 more answers
Which are correct representations of the inequality –3(2x – 5) &lt; 5(2 – x)? Select two options.
chubhunter [2.5K]

The correct statements are options C and option D.

  • - 6x + 15 < 10 - 5x ⇒ 3rd answer
  • An open circle is at 5 and a bold line starts at 5 and is pointing to the right.
<h3 /><h3>What is inequality?</h3>

The relation between two expressions that are not equal, employing a sign such as ≠ ‘not equal to’, > ‘greater than, or < ‘less than.

The inequality is -3(2x - 5) < 5(2 - x)

At first, simplify each side

-3(2x - 5) = -3(2x) + -3(-5)

Remember (-)(-) = (+)

-3(2x - 5) = - 6x + 15

5(2 - x) = 5(2) + 5(-x)

Remember (+)(-) = (-)

5(2 - x) = 10 - 5x

- 6x + 15 < 10 - 5x

Subtract 15 from both sides

- 6x < -5 - 5x

Add 5x to both sides

- x < - 5

Remember the coefficient of x is negative, then when you divide both sides by it you must reverse the sign of inequality

The coefficient of x is -1

Divide both sides by -1

x > 5

Therefore the correct statements are options C and option D.

  • - 6x + 15 < 10 - 5x ⇒ 3rd answer
  • An open circle is at 5 and a bold line starts at 5 and is pointing to the right.

To know more about inequality follow

brainly.com/question/24372553

#SPJ1

4 0
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Which of the following is not a perfect square?<br> A. 36<br> B. 45<br> C. 64<br> D. 81 ...?
Dmitriy789 [7]
In your question, 45 is not a perfect square.
A perfect square is when you divide or multiply the number by itself.
36 is a perfect square because it's factor is 6 x 6 (6,6).
<span>64 is a perfect square because it's factor is 8 x 8 (8,8).
</span><span>81 is a perfect square because it's factor is 9 x 9 (9,9).</span>
5 0
3 years ago
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