3 years ago

Solve the equation: 7x = 7.7 x = ?

Mathematics

2 answers:

pochemuha3 years ago

8 0

Answer: 1.1

Explanation:
7x = 7.7
you divide by 7 on both sides to isolate x.
7x/7 = 7.7/7
Therefore,
x = 1.1

vladimir1956 [14]3 years ago

6 0

Answer:

The value of x in the equation is 1.1

Step-by-step explanation:

7x = 7.7

Divide 7 on both sides of the equation.

x = 1.1

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horrorfan [7]

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3 years ago

How do I go about solving (27x^3/8y^9)^5/3? And what is the role of the numerator and denominator?

MrRissso [65]

$\left( \frac{27x^3}{8y^9}\right)^ \frac{5}{3} \\\\\\ =\left( \frac{(3x)^3}{(2y^3)^3}\right)^ \frac{5}{3} \\\\\\ = \frac{(3x)^{3 \times \frac{5}{3} }}{(2y^3)^{3 \times \frac{5}{3} }} \\\\\\ =\frac{(3x)^5}{(2y^3)^{5 }} \\\\\\ =\frac{243x^5}{32y^{15}}$

Now, If the exponent was negative like you asked....

$\left( \frac{27x^3}{8y^9}\right)^ {-\frac{5}{3}} \\\\\\ =\left( \frac{8y^9}{27x^3}\right)^ {\frac{5}{3}}\\\\\\ =\left( \frac{(2y^3)^3}{(3x)^3}\right)^ \frac{5}{3} \\\\\\ = \frac{(2y^3)^{3 \times \frac{5}{3} }}{(3x)^{3 \times \frac{5}{3} }} \\\\\\ =\frac{(2y^3)^{5 }}{(3x)^5} \\\\\\ =\frac{32y^{15}}{243x^5}$

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3 years ago

Car travels and average speed of 48 miles per hour how long does it take to travel 180 miles?

Neporo4naja [7]

speed =48mph

distance = 180 miles

we know that

time = distance / speed

$time=\frac{180}{48} hours$