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coldgirl [10]
3 years ago
13

I need the answer to this problem.

Mathematics
2 answers:
Annette [7]3 years ago
5 0
C should be the answer
Viefleur [7K]3 years ago
4 0
I would say 3:1, but i'm not positive! if i need to explain my reasoning, i can.
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I NEED YOUR HELLPPP!!
BaLLatris [955]

Answer:

y = -\frac{1}{2}x  - 8

Step-by-step explanation:

1. The slope-intercept form of a linear equation is y = mx + b, where y = y-coordinate, m = slope, x = x-coordinate, and b = y-intercept.

2. To find the slope, let's take the two points (-10,-3) and (-8,-4) to then plug their values into this formula: \frac{y_2-y_1}{x_2-x_1}

  • \frac{-4-(-3)}{-8-(-10)}
  • -\frac{1}{2}

3. Great, now that we have our slope, the equation looks like this so far: y = -\frac{1}{2} x + b.

4. Since b is the y-intercept, b = -8 because the line intersects the y-axis at the coordinate, (0,-8).

5. When plugging in the values of m and b, we get the equation of y = -\frac{1}{2} x - 8

6 0
2 years ago
the dimensions of a rectangular playground are 50 times the dimensions of a scale drawing of the playground. the area of the sca
drek231 [11]
Area of rectangular playground -= length x width = 6 sq feet

dimension of rectangular playground = 50 times the dimension of scale
                                                           = 50 x 6 sq ft
                                                           = 300sq ft

8 0
2 years ago
Approximate the value of 44 (Square root) to the nearest hundreth
Svetlanka [38]

I assume that calculators are not allowed, perhaps not even paper and pencil.

With paper and pencil, there is an algorithm to find the square-root of any number accurate to as many digits as we wish.  Please post if that is the case.

Without calculator, pen and pencil, we resort to mental arithmetic.  Someone with a little practice can memorize or calculate the square of all numbers up to 100, or as many as one can.

Here we can take advantage of exactly the property suggested by Xisca... that is, sqrt(44)=2sqrt(11), which reduces the calculation to more accuracy with a lesser knowledge of the squares of numbers.

As a first approximation, we know that 33*33=1089, or 3.3*3.3=10.89, which is already very close to 11.  

Thus a first approximation to sqrt(44)=2sqrt(11)=2*3.3=6.6 (approximately).

To refine the calculation of sqrt(11), we use Newton's approximation, namely

a better approximation is given by 3.3 + (11 - 3.3^2) / (2*3.3) = 3.3+0.11/6.6 = 3.3+1/60

which gives

sqrt(44) = 2(3.3+1/60) = 6.6+1/30 = 6.6333,

actually accurate almost to the nearest 1/10000.

All of the above can be done mentally

For those who need help with rounding to the nearest hundredth (0.01), we drop digits AFTER the 2nd decimal, namely *.**33.  If the first digit dropped is 5 or more, add one to the last digit retained, otherwise, retain only the two digits after the decimal.  In this case, the first digit dropped is 3, so it will simply be dropped.  The final answer is then 6.63, to the nearest hundredth.

5 0
3 years ago
Read 2 more answers
I WILL GIVE BRAINLESS IF YOU HELP ME PLZ<br><br> S.O.S I HAVE MATH
Nesterboy [21]
A, first find the slope of the line shown, which is 2x+1
slope is rise/over run, with the y-intercept being on 1

When looking at rate of change, it's really just telling you to look at the slope and how steep it is. The more steeper it is, the higher the rate of change. (as close as it is to being a vertical line). Since the slope here is 2. Look for one that has a slope greater than 2, which is 3. Therefore the answer

A. 3x-1

Hope this helps!
8 0
3 years ago
What is the greatest<br> common factor (GCF)<br> of 40 and 42?
enot [183]
Answer: GCF of 40 and 42 is 2
7 0
2 years ago
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