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3 years ago

What is the value of x in the equation 25x2 = 16?

Mathematics

2 answers:

valentina_108 [34]3 years ago

7 0

25x2 = 16
x^2 = 16/25
x^2 = 4^2/5^2
x = 4/5

zlopas [31]3 years ago

6 0

Answer:

The answer is

$x=(+/-)\frac{4}{5}$

Step-by-step explanation:

we have

$25x^{2}=16$

Solve for x

Divide by $25$ both sides

$25x^{2}/25=16/25$

$x^{2}=16/25$

Square root both sides

$x=(+/-)\sqrt{\frac{16}{25}}$

$x=(+/-)\frac{4}{5}$

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65% of the 800 students at North High School ride the

jonny [76]

Answer:

520 out of 800 students ride the bus

Step-by-step explanation:

Given

$Proportion = 65\%$

$Students = 800$

Required

Determine the number of students $that\ ride\ the\ bus$

To do this, we simply multiply the proportion by the total number of students.

i.e.

$Bus = Proportion * Students$

$Bus = 65\% * 800$

Express the percentage as decimal

$Bus = 0.65* 800$

$Bus = 520$

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3 years ago

What is the unit rate $1.79 for 15 oz rounded to nearest tenth

ser-zykov [4K]

Answer:

$0.119... per oz, or 0.1

Step-by-step explanation:

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2 years ago

URGENT, please!!

lakkis [162]

The equation of the parabola is:

$y = 24x^2$

---------------------------

The equation of a parabola of vertex (h,k) and focus (0,f) is given by:

$y = 4p(x - h)^2 + k^2$

Vertex at the origin means that $h = 0, k = 0$ .
Focus (0,6) means that $p = 6$

Thus, the equation of the parabola is:

$y = 4p(x - h)^2 + k^2$

$y = 4(6)(x - 0)^2 + 0^2$

$y = 24x^2$

A similar problem is given at brainly.com/question/15165354

7 0

3 years ago

Find the value of x from the equation

Jobisdone [24]

$\dfrac{8^{3x}}{2^{10}}=\dfrac{4^{2x}}{16} \\\dfrac{2^{3(3x)}}{2^{10}}=\dfrac{4^{2x}}{4^2} \\2^{9x-10}=4^{2x-2} \\2^{9x-10}=2^{2(2x-2)} \\2^{9x-10}=2^{4x-4} \\9x-10=4x-4 \\5x-6=0 \\5x=6 \\\boxed{x=\dfrac{6}{5}}$

Hope this helps.

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3 years ago

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nikitadnepr [17]

Answer:

the answer is d

Step-by-step explanation:

i just know its fine.

8 0

3 years ago

Read 2 more answers