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4 years ago

What is 0.5x10^2??????????????????

Mathematics

1 answer:

Anni [7]4 years ago

3 0

Answer:

0.5 x 10^2 = <em>50</em>

Step-by-step explanation:

Hope this helped

<em>Brainliest?</em>

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Choose the correct symbol to form a true statement. 11/18 ____5/9

Alinara [238K]

For this case we have the following numbers:

$\frac {11} {18} = 0.611111111111\\\frac {5} {9} = 0,555555555556$

Note that $\frac {11} {18}$ is greater than $\frac {5} {9},$ so the inequality sign must be placed with the opening towards $\frac {11} {18}$ .

Answer:

$\frac {11} {18}> \frac {5} {9}$

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4 years ago

Joshua took a total of 12 "i-Ready" quizzes over the course of 2 weeks. How many weeks of school will Joshua have to attend this

Sergio039 [100]

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3 years ago

A basketball court is 150 feet from the net to net how many yards make up a basketball court

Snezhnost [94]

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4 years ago

Which of the following is a solution to 2cos2x − cos x − 1 = 0?

Pavel [41]

Answer:

Option A is correct.

Solution for the given equation is, $x = 0^{\circ}$

Step-by-step explanation:

Given that : $2\cos^2x -\cos x -1 =0$

Let $\cos x =y$

then our equation become;

$2y^2-y-1= 0$ .....[1]

A quadratic equation is of the form:

$ax^2+bx+c =0$ .....[2] where a, b and c are coefficient and the solution is given by;

$x = \frac{-b\pm \sqrt{b^2-4ac}}{2a}$

Comparing equation [1] and [2] we get;

a = 2 b = -1 and c =-1

then;

$y = \frac{-(-1)\pm \sqrt{(-1)^2-4(2)(-1)}}{2(2)}$

Simplify:

$y = \frac{ 1 \pm \sqrt{1+8}}{4}$

$y = \frac{ 1 \pm \sqrt{9}}{4}$

$y = \frac{ 1 \pm 3}{4}$

$y = \frac{1+3}{4}$ and $y = \frac{1 -3}{4}$

Simplify:

y = 1 and $y = -\frac{1}{2}$

Substitute y = cos x we have;

$\cos x = 1$

⇒ $x = 0^{\circ}$

and

$\cos x = -\frac{1}{2}$

⇒ $x = 120^{\circ} \text{and} x = 240^{\circ}$

The solution set: $\{0^{\circ}, 120^{\circ} , 240^{\circ}\}$

Therefore, the solution for the given equation $2\cos^2x -\cos x -1 =0$ is, $0^{\circ}$

8 0

4 years ago

Read 2 more answers

30 POINTS!!!

valkas [14]

The right answer is Option A.

Step-by-step explanation:

Given equation is;

y = 0.354x+4.669

Where x represents the number of miles traveled.

For measuring the cost for two stations that are 10 miles apart;

x=10

Putting in given equation

$y=0.354(10)+4.669\\y=3.54+4.669\\y=8.209$

Rounding off to nearest hundredth;

y=$8.21

The cost for two stations that are 10 miles apart will be $8.21

The right answer is Option A.

Keywords: linear equation, addition

Learn more about linear equations at:

#LearnwithBrainly

5 0

3 years ago

Read 2 more answers