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Novay_Z [31]
3 years ago
12

Simplify the radical expression below: Square root of 80

Mathematics
2 answers:
marta [7]3 years ago
8 0

Answer:

4\sqrt{5}

Step-by-step explanation:

\sqrt{80}

\sqrt{16} \sqrt{5}

4\sqrt{5}

Zarrin [17]3 years ago
8 0
√
4
2
⋅
5
4
2
⋅
5
Pull terms out from under the radical.
4
√
5
4
5
The result can be shown in multiple forms.
Exact Form:
4
√
5
4
5
Decimal Form:
8.94427190
…
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the slope of a line passing through h (-2, 5) is -3/4. Which ordered pair represents a point on this line? ​
rosijanka [135]

Answer:

A

Step-by-step explanation:

Calculate the slope of the given points with the point (- 2,  5 )

If the slope is - \frac{3}{4} then the point is on the line

Calculate slope m using the slope formula

m = \frac{y_{2}-y_{1}  }{x_{2}-x_{1}  }

with (x₁, y₁ ) = (- 2, 5) and (x₂, y₂ ) = (6, - 1)

m = \frac{-1-5}{6+2} = \frac{-6}{8} = - \frac{3}{4} ← point (6, - 1) is on the line

Repeat with (x₁, y₁ ) = (- 2, 5 ) and (x₂, y₂ ) = (2, 8)

m = \frac{8-5}{2+2} = \frac{3}{4} ← point (2, 8) is not on the line

Repeat with (x₁, y₁ ) = (- 2, 5) and (x₂, y₂ ) = (- 5, 1)

m = \frac{1-5}{-5+2} = \frac{-4}{-3} = \frac{4}{3} ← point (- 5, 1) is not on the line

Repeat with (x₁, y₁ ) = (- 2, 5) and (x₂, y₂ ) = (1, 1)

m = \frac{1-5}{1+2} = - \frac{4}{3} ← point (1, 1) is not on the line

Thus the point on the line is (6, - 1 ) → A

4 0
2 years ago
Mrs. Brown hosts an yearly art contest keeps a record of the number of entries each year.
olganol [36]
1. Slope = rate of change
Shown on the graph, for 2016 there are 36 entries. For 2017, there are 40
Since it’s only one year
You can subtract 36 from 40
40 - 36 = 4
Solution: the slope is 4

2. Months increase the most, the lines which are steeper and going upward (since it’s increasing)
Solution: from 2015 to 2016
4 0
3 years ago
A 20 cm long thin wire is used to form a square. What is the area of the square?
sergij07 [2.7K]

Answer:

25cm^2

Step-by-step explanation:

A square has 4 equal sides so each side will be 20/4 = 5cm

Easily calculate the area by taking 5 x 5 = 25cm^2

6 0
2 years ago
Subtract<br> (3x2 + 2x – 9) - (4x2 - 6x + 3)<br> Enter your answer, in standard form in the box.
ss7ja [257]

Answer:

2

Step-by-step explanation:

7 0
2 years ago
Plz it’s for my finals!!
Mrac [35]
Pretty sure it would be D

Good luck on your finals!
3 0
2 years ago
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