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Andreas93 [3]
3 years ago
15

Tell whether it is possible to draw a triangle with the given side lengths. 4 cm, 4 cm, 7 cm

Mathematics
2 answers:
liubo4ka [24]3 years ago
8 0

Answer:

Given 3 sides are 4,4,7 cm. We know sum of 2 sides of triangle are greater than 3rd side. But given sides 4+4 doesn't equal 7. It's not possible to construct a triangle with the given lengths (4,4,7).

Step-by-step explanation:

U can only make a triangle with the same 3 length.

Sati [7]3 years ago
5 0
Yes it is because 4+4=8 and 8 is larger than 7
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A student says that the slope pf the line for the equation y=20-15x is 20 and the y-intercept is 15. Find and correct the error.
Alla [95]
We have this equation for the slope is: y=mx+b which m is the slope and b is the y-intercept, so we have y=20-15x or y=-15x+20, and we already know that the slope is -15 and y-intercept is 20. As a result, the student's error is that he thinks that 20 is the slope because it is the first number. Hope it help!
7 0
3 years ago
What is the square root of -625
loris [4]

Answer:

  25i

Step-by-step explanation:

Your calculator or your knowledge of powers of 5 will tell you that √625 is 25. The minus sign makes the root imaginary.

  \sqrt{-625}=\sqrt{(-1)(25^2)}=25\sqrt{-1}=25i

6 0
3 years ago
Read 2 more answers
Can you please help me figure out this answer? Please and thank you
galben [10]

Here you're being asked to find the "perimeter" of the space, even tho' the problem doesn't specifically ask for it.

The formula for P is P = 2W + 2L.

Here the width, W, is 3 1/2 yds, and the length, L, is 4 2/3 yds. Subbing these two values into the formula for P (above) results in:

P = 2(3 1/2 yds) + 2(4 2/3 yds)

= 7 yds + 9 1/3 yds = 16 1/3 yds, total.

7 0
3 years ago
Sold the equation. Round to the nearest hundredth. <br><br>17 · <img src="https://tex.z-dn.net/?f=1.8%5E%7B-x%2B7%7D%20%3D%205"
svetlana [45]

Answer:

Final answer is approx x=4.26.

Step-by-step explanation:

Given equation is 1.8^{-x+7} = 5

Now we need to solve equation 1.8^{-x+7} = 5 and round to the nearest hundredth.

1.8^{-x+7} = 5

\log(1.8^{-x+7}) = \log(5)

(-x+7)\log(1.8) = \log(5)

(-x+7) = \frac{\log(5)}{\log(1.8)}

(-x+7) = \frac{0.698970004336}{0.255272505103}

-x+7 = 2.73813274192

-x = 2.73813274192-7

-x =−4.26186725808

x =4.26186725808

Round to the nearest hundredth.

Hence final answer is approx x=4.26.

4 0
3 years ago
The mean percentage of a population of people eating out at least once a week is 57% with a standard deviation of 3.50%. Assume
Fed [463]
Since 68% of the sample ranges from the plus minus first standard deviation from the mean, then interval wherein it will occur will be between 53.5% to 60.5%. I got this answer through adding and subtracting one standard deviation (3.5) from the mean (which is 57). 
4 0
3 years ago
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