3 years ago

A number is between 16 and 21. It has prime factors of 2, and 3. What is the number?

Mathematics

1 answer:

Advocard [28]3 years ago

6 0

Answer:18

Step-by-step explanation: 18=2.3.3

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one tank is filling at a rate of 3/4 per gallon per 2/3 minute .a second tank is at a 5/8 gallon per 1 half gallon per 1/2 minut

Bingel [31]

$recall\ that\implies \cfrac{\frac{a}{b}}{\frac{c}{{{ d}}}}\implies \cfrac{a}{b}\cdot \cfrac{{{ d}}}{c}\qquad thus
\\ \quad \\

\cfrac{\frac{3g}{4}}{\frac{2m}{3}}\implies \cfrac{3g}{4}\cdot \cfrac{3}{2m}\implies \cfrac{\square ?}{\square ?}
\\-------------\\
\cfrac{\frac{5g}{8}}{\frac{1m}{2}}\implies \cfrac{5g}{8}\cdot \cfrac{2}{1m}\implies \cfrac{\square ?}{\square ?}$

so... you tells us, which filling rate is the bigger and thus faster one?

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3 years ago

A triangle has an area of 36 square units. Its height is 9 units.

Black_prince [1.1K]

Well area of a triangle is
$\frac{1}{2} b \times h$
so,
$36 \times 2 = 72 \\ 72 \div 9 = 8$
The answer is 8

8 0

3 years ago

Read 2 more answers

Can y’all help pls ;)

Vikentia [17]

Answer:

A. 5x+6

Step-by-step explanation:

- $\frac{1}{3}$ (9x-18)+8x

-3x+6+8x (multiply across the -1/3)

5x+6 (combine 8x and -3x)

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3 years ago

Simplify the expression

AlexFokin [52]

Answer:

Step-by-step explanation:

$\frac{3+4\iota}{2+4\iota}=\frac{3+4 \iota}{2+4\iota} \times \frac{2-4 \iota}{2-4 \iota}\\=\frac{6 -12 \iota+8 \iota-16 \iota^2 }{4-16 \iota^2 }\\=\frac{ 6-4 \iota+16}{4+16}\\=\frac{22-4 \iota}{20}$

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3 years ago

A painter earns $119.00 for 7 hours of work. Which of the following is an equivalent rate?

spayn [35]

The answer is D I think!

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2 years ago