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3 years ago

Which? A B C D Help me for 20 points!!!

Mathematics

1 answer:

Alekssandra [29.7K]3 years ago

3 0

B, 7 3/10 minus 5 7/10 is 1 6/10

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What is a number divided by 9

LuckyWell [14K]

18 divided by 9 is 2

8 0

3 years ago

Read 2 more answers

<img src="https://tex.z-dn.net/?f=0%20%3D%20%20%20-%204.9t%20%7B%7D%5E%7B2%7D%20%20%2B%2027t%20%2B%202.4" id="TexFormula1" title

marta [7]

$0 = - 4.9t {}^{2} + 27t + 2.4$
Convert decimals to fractions

$0 = - \frac{49}{10} t {}^{2} + 27t + \frac{12}{5}$
Multiply both sides by 10

$0 = - 49t {}^{2} + 270t + 24$
Move expression to the left.

$0 + 49t {}^{2} - 270t - 24 = 0$
Remove zero.

$49t {}^{2} - 270t - 24 = 0$ Solve the quadratic equation.

$t = \frac{ - ( - 270) + - \sqrt{( - 270) {}^{2} - 4 \times 49 \times ( - 24) } }{2 \times 49}$
Remove parenthesis and calculate.

$t = \frac{270 + - \sqrt{72900 + 4704} }{98}$
Add the numbers

$t = \frac{270 + - 77604}{98}$
Separate the solutions

$t = \frac{270 + \sqrt{77604} }{98} \\ t = \frac{270 - \sqrt{77604} }{98}$
The final solution are
$t1 = \frac{270 - \sqrt{77604} }{98} , t2 = \frac{270 + \sqrt{77604} }{98}$

7 0

3 years ago

I really need help answering this please

STatiana [176]

Answer:

Step-by-step explanation:

NM=26

LM= $\sqrt{26^{2} +33^{2} }$

LM=42.0

5 0

3 years ago

Which represents the function in the table as ordered pairs?

tiny-mole [99]

Answer:

options a

Step-by-step explanation:

A. {(–4, –3), (–1, 0), (0, 1), (5, 6)}

7 0

3 years ago

Nina [5.8K]

Answer:

Step-by-step explanation:

1/3 x 3/5 x 3/4 =7/12 so therefore that's what the answer isn't

7 0

3 years ago