3 years ago

What is the positive solution to this equation 4x^2+12x=135

Mathematics

1 answer:

Stels [109]3 years ago

5 0

Answer:

answer for the equation is 6.75

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Simplify<br>-6√20+2√45+7√5 <br><br>show Woking out to prove ans please

Dmitry_Shevchenko [17]

Answer:

$\sqrt{5}$

Step-by-step explanation:

Using the rule of radicals

$\sqrt{a}$ × $\sqrt{b}$ ⇔ $\sqrt{ab}$

Simplifying the radicals

$\sqrt{20}$ = $\sqrt{4(5)}$ = $\sqrt{4}$ × $\sqrt{5}$ = 2 $\sqrt{5}$

$\sqrt{45}$ = $\sqrt{9(5)}$ = $\sqrt{9}$ × $\sqrt{5}$ = 3 $\sqrt{5}$

Thus

- 6(2 $\sqrt{5}$ ) + 2(3 $\sqrt{5}$ ) + 7 $\sqrt{5}$

= - 12 $\sqrt{5}$ + 6 $\sqrt{5}$ + 7 $\sqrt{5}$

= $\sqrt{5}$

6 0

3 years ago

Please answer this the best you possible can :)

Veronika [31]

Answer:

the answer is x=15

Step-by-step explanation:

75/5=15

120/8=15

180/12=15

Hope this helps some.

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3 years ago

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Art [367]

Answer:

Step-by-step explanation:

Only option C values add up to 100%

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Which of the ratios does not form a proportion 28.49=4.7

VARVARA [1.3K]

28.49 because they dont have a proportion

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3 years ago

Simplify.<br>Enter your answer, in simplest form, (in the boxes).

zepelin [54]

Answer:

1/4

Step-by-step explanation:

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4 years ago