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3 years ago

What are the solutions to the equation 9x2 = 49, rounded to the nearest tenth?

Mathematics

2 answers:

Sergio [31]3 years ago

8 0

I would go for A if anything

MariettaO [177]3 years ago

4 0

A.
<span>2.3, –2.3

Working;</span>
$9x^{2} =49$
$x^{2} = \frac{49}{9}$
<span>x=</span> $\sqrt{ \frac{49}{9} }$
x= +-2.3

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Solve the equation 0.4+0.5=-4.7-0.6z

Charra [1.4K]

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3 years ago

Of the Students that attended Roosevelt Elementary 6/8 of the school play a sport. Of the students are playing a sport 3/5 of th

soldier1979 [14.2K]

Answer:

$\frac{9}{20}$ students.

Step-by-step explanation:

We have been given that of the students that attended Roosevelt Elementary 6/8 of the school play a sport. Of the students are playing a sport 3/5 of the students are also involved in the drama club.

To find the students are both play a sport and a part of the drama club, we need to find 3/5 part of 6/8 as:

$\text{Students who play a sport and a part of the drama club}=\frac{6}{8}\times \frac{3}{5}$

$\text{Students who play a sport and a part of the drama club}=\frac{3}{4}\times \frac{3}{5}$

$\text{Students who play a sport and a part of the drama club}=\frac{3\times 3}{4\times 5}$

$\text{Students who play a sport and a part of the drama club}=\frac{9}{20}$

Therefore, $\frac{9}{20}$ students play sport and part of the drama club.

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3 years ago