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4 years ago

What grade is a 38.1/42?

Mathematics

2 answers:

algol [13]4 years ago

7 0

Should be an A- or a B+

Leno4ka [110]4 years ago

6 0

90% is the percentage of the grade and the letter grade depends on your teacher

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There are 24 fish in an aquarium. If 1/8 of them are tetras, and 2/3 of the remaining fish are guppies, how many guppies are in

kiruha [24]

Answer:

14 guppies

Step-by-step explanation:

1/8th of 24 is 3 which leaves 21 remaining

2/3 of 21 is 14 as each third is 7

8 0

4 years ago

Can I get help answering this question? It's a derivatives question, further info in the attachment.

Nadusha1986 [10]

$\bf f(x)=|3+9x|\implies f(x)=\sqrt{(3+9x)^2}\implies f(x)=[(3+9x)^2]^{\frac{1}{2}}
\\\\\\
\cfrac{dy}{dx}=\stackrel{chain~rule}{\cfrac{1}{2}[(3+9x)^2]^{-\frac{1}{2}}\cdot 2(3+9x)\cdot 9}\implies \cfrac{dy}{dx}=\cfrac{9(3+9x)}{[(3+9x)^2]^{\frac{1}{2}}}
\\\\\\
\cfrac{dy}{dx}=\cfrac{27+81x}{|3+9x|}\\\\
-------------------------------$

$\bf \textit{left-hand derivative at }x=-\frac{3}{9}\implies \cfrac{27+81x}{-(3+9x)}
\\\\\\
\cfrac{27+81\left( -\frac{3}{9} \right)}{-3-9\left( -\frac{3}{9} \right)}\implies \cfrac{27-27}{-3+3}\implies \stackrel{unde fined}{\cfrac{0}{0}}\\\\
-------------------------------\\\\
\textit{right-hand derivative at }x=-\frac{3}{9}\implies \cfrac{27+81x}{+(3+9x)}
\\\\\\
\cfrac{27+81\left( -\frac{3}{9} \right)}{3+9\left( -\frac{3}{9} \right)}\implies \cfrac{27-27}{3-3}\implies \stackrel{unde fined}{\cfrac{0}{0}}$

8 0

3 years ago

a full glass of water can hold 1/6 of a bottle how many of glasses can be filled with 3 1/2 of bottles of water

Tamiku [17]

Answer:

21 glasses can be filled

7 0

3 years ago

Consider the statement "If Oscar eats Chinese food, then he drinks milk." a. Write the converse of the statement. b. Write the c

m_a_m_a [10]

Step-by-step explanation:

Consider the provided statement.

"If Oscar eats Chinese food, then he drinks milk."

Here p is Oscar eats Chines food and q is he drinks milk.

Converse is interchange the two statement.

Converse: "If Oscar drinks milk, then he eats Chinese food"

Contrapositive is negative both statement and interchanges them.

Part (b) Contrapositive: "If Oscar doesn't drink milk, then he doesn't eat Chinese food"

Part ( c) If the provided statement is true, then the contrapositive is always true because contrapositive is logically equivalent to the provided statement. If provided statement is false, then the contrapositive is always false.

Part (d) let the original statement is true, and we know that Oscar drinks milk, then we still would not be able to make any conclusion about his Chinese food eating habits.

Because the statement is true if "Oscar eats Chinese food" is true Oscar may or may not eat chines food.

The above converse may be false.

Part (e) Suppose the original statement is true, and that Oscar does not drink milk. It means Oscar doesn't eat Chinese food. Because if Oscar eats Chinese food, then according to the truth of the original statement "Oscar drinks milk" to be true which is the contradiction.

Thus, Oscar doesn't eat Chinese food.

3 0

3 years ago

Read 2 more answers

The modified expression, x3(2x + 5) – 4(2x + 5), has two terms with a common factor of

goldfiish [28.3K]

Common factor is an expression that is common. Her we can see 2x+5 is a factor for both of the terms so it is the common factor.

3 0

4 years ago