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3 years ago

The graph shows the relationship between the weight of a box and the number of books added to the box.

Mathematics

2 answers:

juin [17]3 years ago

7 0

The function will be f(x) = 01.5x + 0.5

adelina 88 [10]3 years ago

5 0

The answer is the third option f(x)=01.5x + 0.5

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The price of a new computer is p dollars. The computer is on sale for 30% off. Which expression shows the savings that are being

4vir4ik [10]

Answer:

A. P - 0.3P

Step-by-step explanation:

Given the price of the computer is P dollars and it’s on sale for 30% off.

That’s

30% /100% x P

0.3 x P

0.3P

Savings being offered on the computer is therefore

P - 0.3P

This is because 0.3P is the discounted amount and to get the sale on amount , you subtract the discounted amount from the original price P

6 0

4 years ago

PLEASE HELP FAST 50 POINTS!!

Pepsi [2]

Answer:

edit: adjacent angles

Step-by-step explanation:

hope this helps

5 0

3 years ago

Read 2 more answers

A piece of fabric is 1/3 yard by 3 5/8 yards.

tankabanditka [31]

Answer:

sorry if this is wrong

Step-by-step explanation:

a. 3

b.15

c.8

3 0

3 years ago

The rational number -41 is equal to

kolezko [41]

Answer:

Step-by-step explanation:

-14 is also equal to 0

cause it does not have any value

8 0

3 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