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2 years ago

1. On the last 5 quizzes, Marco has earned a total of 21 out of 25 possible points. If he has a perfect

Mathematics

1 answer:

Nonamiya [84]2 years ago

3 0

The number of points Marco needs to bring his average up to 90% is 15points.

If there's a possible 25 possible points, and Marco has taken 5 quizzes;

Evidently, each quiz has weighs 5 points.

Mathematically;

$\frac{21 + 5x}{5(5 + x)} \times 100\% = \frac{90}{100}$

2100 + 500x = 2250 + 450x

50x = 150

x = 3.

Therefore, he needs 5x points = 15 points to bring his average up to 90%.

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Factors can be defined as ________ which divide the dividend without leaving any reminder

Svetradugi [14.3K]

Answer:

Factors can be defined as a number or algebraic expression which divide the dividend without leaving any reminder.

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2 years ago

Are these ratios equivalent?

krek1111 [17]

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Yes

Step-by-step explanation:

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3 years ago

4st^2-s^2 were s=5 and t=7

barxatty [35]

➣ Assignment: $\bold{Solve \ Equation: \ \left(4\left(5\cdot \:7^2\right)\right)-5^2}$

↔↔↔↔↔↔↔↔

➣ Answer: $\boxed{\bold{955}}$

↔↔↔↔↔↔↔↔

Explanation: ↓↓↓↓↓

↔↔↔↔↔↔↔↔

➤ [ Step One ] Follow PEMDAS Order Of Operations

$\bold{4\left(5\cdot \:7^2\right): \ 980}$

➤ [ Step Two ] Rewrite Equation

$\bold{4\left(5\cdot \:7^2\right)}$

➤ [ Step Three ] Calculate Within Parenthesis

$\bold{4\left(5\cdot \:7^2\right): \ 245}$

➤ [ Step Four ] Rewrite Equation

$\bold{4\cdot \:245}$

➤ [ Step Five ] Multiply

$\bold{4\cdot \:245: \ 980}$

➤ [ Step Six ] Rewrite Equation

$\bold{980-5^2}$

➤ [ Step Seven ] Calculate Exponents

$\bold{5^2: \ 25}$

➤ [ Step Eight ] Rewrite Equation

$\bold{980-25}$

➤ [ Step Nine ] Solve

$\bold{955}$

↔↔↔↔↔↔↔↔

$\bold{\rightarrow Mordancy \leftarrow}$

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3 years ago

Help!

andre [41]

Answer:

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hence, the left of △XYZ will be equivalent to the right of △LMN and the right of △XYZ will be equivalent to the left of △LMN

Hence, ∠X in the pre-image will be equal to ∠L in the main image

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3 years ago

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kkurt [141]

Median of 10, 55, 34, 21

First we arrange number in ascending or descending

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Median is the middle number and this is between 21 and 34.

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Median is 27.5.

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2 years ago