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3 years ago

Help please much appreciated

Mathematics

2 answers:

leonid [27]3 years ago

7 0

The correct answer is A.

Explanation.....
Let h represent the temperature decreasing each hour.
60-3h<32
The answer must be below 32 degrees.

larisa [96]3 years ago

6 0

The answer is a.........

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Can someone please help i really need to ace this <br><br> x = ___ degrees

lord [1]

Answer:pretty sure its 10 degrees

Step-by-step explanation:

all tris add up to 180, and this one is a right angle so you know you have 90 deg, 80 degrees. 90+80=170; 180-170=10

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2 years ago

The slope of a line is -4 and it’s y-intercept is (0,4) what is the equation of the line that is perpendicular to the first line

Rasek [7]

Original line equation: y=-4x+4

Perpendicular lines have opposite reciprocals, so the slope of the perpendicular line would be 1/4x.

Perpendicular line equation: y=1/4x+b

Plug in the coordinates that the line passes through to solve for b. Plug -8 in for x and 2 in for y.

2=1/4(-8)+b

Multiply.

2=-2+b

Add 2 to both sides.

4=b

Equation of the perpendicular line: y=1/4x+4

Hope this helps! :)

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3 years ago

Evaluate 2k + m if k = 11 and m = 5.

Reptile [31]

5 0

3 years ago

Read 2 more answers

Describe the piecewise function below by evaluating the function for given values of the domain

tekilochka [14]

We have a piecewise function.
Therefore, to find the function, we must evaluate each domain separately.
We have then:

For $x \leq -2$ :
The function for this domain is:
$y = -3
$

For $-2 \ \textless \ x \leq 2$ :
The function for this domain is:
$y = mx + b
$
Where,
$b = -3

 m = (y2 - y1) / (x2 - x1)

 m = (1 - (-7)) / (2 - (-2))$
$m = (1 + 7) / (2 + 2)

 m = 8/4

 m = 2$
Substituting:
$y = 2x - 3
$

For $x\ \textgreater \ 2$ :
The function for this domain is:
$y = 5$

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3 years ago

9. Which have infinite length?

Iteru [2.4K]

Line is the answer. Cheers mate

7 0

3 years ago