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3 years ago

10. Peyton wants to get an A in her Chemistry class this semester. Her first 4 tests were a 94.

Mathematics

1 answer:

liubo4ka [24]3 years ago

4 0

Answer:

She needs to get 94 in the fifth test.

Step-by-step explanation:

Peyton wants to get an A in her Chemistry class this semester. Her first 4 tests were 94, 83, 88, and 91.

She has to get an average mark of 90 and to do that let us assume, she has to get x in the fifth test.

So, mathematically

$\frac{94 + 83 + 88 + 91 + x}{5} = 90$

⇒ 356 + x = 90 × 5

⇒ 356 + x = 450

⇒ x = 94

Therefore, she needs to get 94 in the fifth test. (Answer)

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Which statement is true?

defon

Answer:

b. Multiplying decimals less than one is finding a part of a part.

Step-by-step explanation:

A part of a given number implies a selected part of a given number which can be expressed as a fraction of the number. Example, the half of any number is $\frac{1}{2}$ .

The product of a part and another part can be expressed as;

$\frac{1}{3}$ x $\frac{2}{3}$ = $\frac{2}{9}$

or,

$\frac{1}{2}$ x $\frac{1}{2}$ = $\frac{1}{4}$

or,

$\frac{1}{2}$ x $\frac{2}{3}$ = $\frac{2}{6}$ = $\frac{1}{3}$

The three examples shows: a part x a part.

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3 years ago

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Answer:

Yes, you can use this inequality to find the numbers of cars required.

Step-by-step explanation:

12 + 3n > 28 where n = the number of cars required

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Greater than 5 1/3 gives 6 cars.

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2 years ago

Clancey and Ethan are starting new books. So far, Clancey has read 1/4 of his book, which has 240 total pages and Ethan read 2/3

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Step-by-step explanation:

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2 years ago

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Answer:

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Step-by-step explanation:

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3 years ago

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Answer:

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Step-by-step explanation:

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