The temperature at a mountain base camp was −2 degrees Celsius on Thursday. Friday morning, the temperature was 1 degree Celsius lower than what it was on Thursday. By Friday evening, the temperature was 3 degrees Celsius lower than what it was that morning. What was the temperature at the base camp Friday evening?

Answers

Answer 1
Answer:

The temperature at the base camp on Friday evening was -6°C

The temperature at a mountain base on Thursday = -2°C

On Friday morning, the temperature was 1 degree Celsius lower than what it was on Thursday, hence:

The temperature at a mountain base on Friday morning = -2°C - 1°C = -3°C

By Friday evening, the temperature was 3 degrees Celsius lower than what it was that morning.

The temperature at a mountain base on Friday evening = -3°C -3°C = -6°C

The temperature at the base camp on Friday evening was -6°C

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Answer 2
Answer:

Answer:

-6

Step-by-step explanation:

starts at -2

then drops -1

and lastly drops -3

which leaves you at -6 degrees Celsius


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Sin(x-20)=1/root2

This question is confusing me.

Answers

=> x - π/9 = π/4 + 2kπ, where k is an integer or  x - π/9 =  3π/4  + 2kπ, where k is an integer => x = 13π/36 +  2kπ, where k is an integer or x = 31π/36 + 2kπ, where k is an integer;

Answer:

View Image

Step-by-step explanation:

Note that 1/√(2) is equal to √(2)/2:

1/√(2) = √(2)/2

So we're given that sin(x-20) = √(2)/2

The only place on the unit circle where sin() is equal to √(2)/2 is at π/4 and 3π/4.

That means the value inside the sine must be equal to π/4 and 3π/4:

since sin(π/4) = √(2)/2  and  sin(π/4) = √(2)/2

then,

sin(π/4) = sin(x-20)   and  sin(π/4) = sin(x-20)

You set the inside of the parentheses equal to each other and solve for x.

You can also add a +2πk at the end since all sinusoidal graph repeats every 2π.

A homeowner chooses 9 of 25 plants at a nursery to landscape her front yard. Which expression gives her the number of ways she can choose the plants?9C25

9P25

25P9

25C9

Answers

The correct answer is 25C9

If you can’t see it’s (2/5)^2

Answers

Answer: 0.16

Step-by-step explanation:

2/5=.4

.4^2=0.16

Answer:

0.16

Step-by-step explanation divide 2 with 5 you get 0.4. After that you have an exponent. You will take 0.4 to the 2nd power

Express one-third of a complete angle into radian​

Answers

Answer:

0.66667π radians

Step-by-step explanation:

1/3 = 0.33333

One-third of a complete angle in radians would be:

0.33333 · 2π ≈ 0.66667π radians

So, the answer is 0.66667π radians

Which is the solution to the equation 2x+ 4= -8? A.) x= -2
B.) x= -8
C.) x= -6
D.) x= -1

Answers

x = -6


2x + 4 = -8

Subtract 4 to from sides
2x = -12

divide both sides by 2
x = -6

The correct answer is C. -6

2 x -6 + 4 = -8

Hope this helps

Factor the expression
10x+15y=

Answers

5(2x+3y) is the most it can be factored. You first have to find the greatest common factor and once thats done just try using methods such as the diamond. The only thing it was able to do using the methods was this.

Final answer:

To factor the expression 10x+15y, we can factor out the greatest common factor (GCF) of 5 to get 5(2x+3y).

Explanation:

To factor the expression 10x+15y, we need to find the greatest common factor (GCF) of the two terms.

In this case, the GCF is 5, because both 10 and 15 are divisible by 5.

We can then factor out the GCF to get: 5(2x+3y).

Learn more about Factoring Expressions here:

brainly.com/question/34538238

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