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Novosadov [1.4K]
4 years ago
5

Can someone help me with a, b, c, and d I would really appreciate it

Mathematics
1 answer:
dsp734 years ago
6 0

Step-by-step explanation:

a. Area = 121 ft²

s² = 121

s = √121

Therefore s = 11 ft

b. Area = 81 yd²

s² = 81

s = √81

Therefore s = 9 yd

c. Area = 324 cm²

s² = 324

s = √324

Therefore s = 18 cm

d. Area = 361 mi²

s² = 361

s = √361

Therefore s = 19 MI

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Lizzie bought 0.8 kg of pears at €1.90 per kilogram and 1.4 kg of apples. The total cost €4.46. What was the price per kilogram
scoundrel [369]

Answer:

The the cost of 1 kg apples =  € 2.1

Step-by-step explanation:

The amount of pears bought by Lizzie  = 0.8 kg

The amount of apple bought by Lizzie  =  1.4 kg

Total amount paid  =  €4.46

Now, the cost of 1 kg pears =  €1.90 per kg

So, the cost of 0.8 kg pears  = 0.8  x (1.90)  =  €1.52

Now, let the cost of 1 kg apples =  € m

So, the cost of 1.4 kg apples  = 1.4 x ( € m)  = 1.4 m

So, the total amount = Cost of Apples + Cost of Pears

⇒                    €4.46   =  €1.52   +  1.4 m

or, 1.4 m = 4.46  - 1.52  = 2.94

⇒ m = 2.94/1.4 = 2.1

or, m = 2.1

Hence, the the cost of 1 kg apples =  € 2.1

7 0
4 years ago
Segment AB has endpoints A(-1,3) and B(0,7). What is the length of AB?
ololo11 [35]

Answer:

\sqrt{17}

Step-by-step explanation:

Calculate the length (d) using the distance formula

d = √ (x₂ - x₁ )² + (y₂ - y₁ )²

with (x₁, y₁ ) = (- 1, 3) and (x₂, y₂ ) = (0, 7)

d = \sqrt{(0+1)^2+(7-3)^2}

   = \sqrt{1^2+4^2}

   = \sqrt{1+16}

   = \sqrt{17} ≈ 4.1 ( to 1 dec. place )

5 0
3 years ago
2.2,<br> Write the ratio 1 2/3: 2 2/3 in the simplest form.<br> ,
gulaghasi [49]

Answer:

1:2

Step-by-step explanation:

this would be the answer as 1 2/3: 2 2/3 are the same as 1:2 if you cancel out the 2/3 from both sides.

6 0
3 years ago
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How to find all of the angles and sides of a triangle using sine
Hoochie [10]

Answer:

how to find them

Step-by-step explanation:

1. The sine of the angle = the length of the opposite side. the length of the hypotenuse.

2. The cosine of the angle = the length of the adjacent side. the length of the hypotenuse.

3. The tangent of the angle = the length of the opposite side. the length of the adjacent side.

6 0
4 years ago
-2/5n=-30 n=?     Please help me with my math! 10 PTNS!!
maks197457 [2]
N =75 i solved for N and got 75
6 0
3 years ago
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