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Mekhanik [1.2K]
3 years ago
7

What is the value of cos(60)

Mathematics
2 answers:
rewona [7]3 years ago
8 0

Answer:

0.5

Step-by-step explanation:

Delvig [45]3 years ago
3 0

Answer: cos(60)= - 0.95241298041

Step-by-step explanation: that the answer

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The sum of two numbers is 39. The second number is 3 more than three times the first number. Let x represent the first number an
GenaCL600 [577]

Answer:

The\: value \:of\: the\: first\: number\:is\:9

Step-by-step explanation:

We\:have\:a\:system\:of\:equation:\\\left \{ {{x+y=39} \atop {3x+3=y}} \right. \\\Leftrightarrow \left \{ {{39-x=y} \atop {3x+3=39-x}} \right. \\\Leftrightarrow \left \{ {{39-x=y} \atop {4x=36}} \right. \\\Leftrightarrow \left \{ {{y=39-9} \atop {x=9}} \right. \\\Leftrightarrow \left \{ {{y=30} \atop {x=9}} \right. \\\Rightarrow x=9

6 0
3 years ago
Read 2 more answers
Which describes the correct procedure when converting a number from scientific notation to standard notation if the power of 10
jenyasd209 [6]

Answer:

A. Move the decimal point to the left

Step-by-step explanation:

Given that:

The scientific notation = 10⁻¹⁰

Let recall;

That the standard notation usually took the form of an inverse:

For example;

Let say 10⁻¹ will be \dfrac{1}{10} in scientific notation;

SO, \dfrac{1}{10} = 0.1

Now; we are given 10⁻¹⁰ as a scientific notation,

To standard notation, we get:

10^{-10} = \dfrac{1}{100}

= 0.01

Thus, it is true to say that the decimal point will be moved to the left side when converting a number from scientific notation to standard notation if the power of 10 is  -10.

4 0
3 years ago
On a recent trip, Juan started at an elevation of 1200 feet above sea level. He descended into a valley 20.4 feet below sea leve
liraira [26]

A would be the correct answer because he is up in elevation so that makes the 1200 positive and he goes down 20.4 which is negative and is goes that far down!!

hope this helps

3 0
3 years ago
Read 2 more answers
Find the equation of the line.<br> Use exact numbers.<br> y =<br> +
jek_recluse [69]

Step-by-step explanation:

The equation of the line is y = 4x - 9.

7 0
3 years ago
Remove parentheses and simply.<br> 4x+4y-5(4x-2y+9z)=
Leya [2.2K]

Answer:

-16x+14y-45z

Step-by-step explanation:

4x+4y-5(4x-2y+9z)

we apply the distributive property:

4x+4y-5*4x-5*(-2y)-5*9z

so we have:

4x+4y-20x+10y-45z

-16x+14y-45z

6 0
3 years ago
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