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3 years ago

Which expression is not equal to 1?

Mathematics

2 answers:

liq [111]3 years ago

5 0

Hopes this helps if it is wrong I am so sorry:

Answer: sin 0 cos 0

Dafna1 [17]3 years ago

5 0

sin θ cos C

Step-by-step explanation:

Suppose, θ=30°

Suppose,

sin θ cos θ=1

⇒sin30°cos30°=1

⇒ $\frac{1}{2}$ × $\frac{\sqrt{3\\} }{2}$ =1

⇒ $\frac{\sqrt{3} }{4}$ ≠1

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the diagram shows a rectangle four of these rectangles are put to together as shown calculate the shaded area

yawa3891 [41]

Answer:

42cm squared

Step-by-step explanation:

You are taking 2 x 0.5cm of the smaller sides rectangles which is 1. Then what is left is 6x7 which is 42cm squared

6 0

3 years ago

Rounded to the nearest hundredth, what is the positive solution to the quadratic equation 0 = 2x2 + 3x – 8? Quadratic formula: x

OleMash [197]

ANSWER

$x=1.39$ to the nearest hundredth.

EXPLANATION

We have the equation,

$0=2x^2+3x-8$

Which can be rewritten as

$2x^2+3x-8=0$

The question demands the use of the quadratic formula.

Comparing this to the general quadratic equation;

$ax^2+bx+c=0$

$a=2,b=3,c=-8$

The quadratic formula is given by;

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

We now substitute all the values in to the formula;

$x=\frac{-3\pm\sqrt{(3)^2-4(2)(-8)}}{2(2)}$

We simplify to obtain;

$x=\frac{-3\pm\sqrt{9+64}}{4}$

$x=\frac{-3\pm\sqrt{73}}{4}$

We now split the plus or minus sign to obtain;

$x=\frac{-3-\sqrt{73}}{4}$

This implies that;

$x=-2.89$

$x=\frac{-3+\sqrt{73}}{4}$

This will evaluate to;

$x=1.39$

Hence, the positive solution rounded to the nearest hundredth is

$x \approx 1.39$

6 0

4 years ago

Read 3 more answers

What is the answer to this problem? 7(g+5)=105

Liono4ka [1.6K]

Answer:

g = 10

Step-by-step explanation:

Distribute 7 to the parentheses:

7(g + 5) = 105

7g + 35 = 105

Solve for g:

7g + 35 = 105

7g = 170

g = 10

So, the answer is g = 10

3 0

3 years ago

Read 2 more answers

Nate biked 56 miles in 4hours. what was Nates average speed for 1 hour?<br>

son4ous [18]

The answer to this one is simple.
An equation to model with would be
? * 4 = 56.

To find ? All you have to do is divide 56 by 4.

So the answer to your question is 14 miles per hour.

Hope I did this right and hope I helped you :))))

5 0

3 years ago

Ethan plotted points E, F, G, H, and I on a number line, as shown below. Which two points that Ethan plotted represent numbers t

nirvana33 [79]

Answer:

F and H

Step-by-step explanation:

From the image attached, the location of the points are E = -9, F = -6, G = -2, H = 6, I = 8. The law of additive inverse states that for a number a, its additive inverse is a number that when added to a equals to zero. This number is usually opposite in sign to a and of the same magnitude i.e -a. The law is given as:

a + (-a) = 0

From the points, F is the additive inverse of H, hence:

F + H = 0

6 + (-6) = 6 - 6 = 0

Hence the two points are F ad H

6 0

3 years ago