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aniked [119]
3 years ago
5

Please help. 20 points...........

Mathematics
2 answers:
Natali5045456 [20]3 years ago
4 0

la respuesta es 7.5que  six

Eva8 [605]3 years ago
3 0
ANSWER

The answer is 7.5
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How would using a number line to find the sum -2+ -5?
Gelneren [198K]

Answer:

In finding the sum of 2+5 you would go right on the number line, while in finding the sum of -2+(-5) you would go left on the number line

Step-by-step explanation:

3 0
3 years ago
Which equation represents a line that is perpendicular to line PQ?
valentinak56 [21]

Answer:

B. y=1/3x+4

Step-by-step explanation:

Hi there!

We are given the line PQ and we want to find the line that is perpendicular to it

Perpendicular lines have slopes that are negative and reciprocal. When they are multiplied together, the result is -1

So first, let's find the slope of the line PQ

The point P is given as (-8, 7) and the point Q is given as (-4, -5)

The formula for the slope calculated from two points is \frac{y_2-y_1}{x_2-x_1} where (x_{1} y_1) and (x_2, y_2) are points

We have the needed information for the slope, but let's label the values of the points to avoid any confusion

x1=-8

y1=7

x2=-4

y2=-5

Now substitute into the formula (m is the slope, and remember: the formula contains SUBTRACTION):

m=\frac{(-5-7)}{(-4--8)}

simplify

m=\frac{-5-7}{-4+8}

add

m=-12/4

divide

m=-3

So the slope of the line PQ is -3

As said above, perpendicular lines have slopes that have a product of -1

So to find the slope of the line perpendicular to PQ, use this formula:

-3m=-1

divide both sides by -3

m=1/3

The only line that has a slope of 1/3 is B (y=1/3x+4), so B is the answer.

Hope this helps!

3 0
3 years ago
A meteorologist has a thermometer that measures the temperature in degrees Celsius. One morning the thermometer reads -2°C, and
alexandr1967 [171]
The thing he is measuring is increasing in ferhinhite but in Celsius it is decresing
7 0
3 years ago
At the zoo the polar bears are fed 7/9 bucket of fish a day. The penguins are fed 4/7 that amount. What fraction are the penguin
OlgaM077 [116]

Answer: They are fed 4/9 of what the polar bears are fed.


Step-by-step explanation:

7/9*4/7=

1/9*4/1=4/9

The 7's get cancelled out.

                                       


4 0
3 years ago
What is the midpoint of (0,0.55) and (-3,6)
Contact [7]

Answer:

(-1.5, 3.275)

Step-by-step explanation:

midpoint = ( x1+X2/2 , y1+y2/2)

=(0+(-3)/2, 0.55+6/2)

=( -3/2, 6.55/2)

=( -1.5, 3.275)

8 0
2 years ago
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