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Anna007 [38]
2 years ago
5

Answer the question plz

Mathematics
2 answers:
sladkih [1.3K]2 years ago
4 0
6. 180 - 50 - 35 = 95
7. 360 - 70 - 80 - 85 = 125
Pie2 years ago
4 0

Answer:

1) A- 95

2) B-  125

Step-by-step explanation:

1) 50 + 35+x = 180

85 +x = 180

x = 180- 85

 = 95

2) 70 +80 + 85+d = 360

235 + d = 360

d = 360 - 235 = 125

I Hope im right!

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nikitadnepr [17]

Answer:1,2,4,5, I just took the test

Step-by-step explanation:

7 0
3 years ago
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How many kilograms of tin will be required to make 250 kg of an alloy, if the alloy must contain 81% copper, 14% tin and 5% lead
uysha [10]

Answer:

35

Step-by-step explanation:

all are obeying a constant ratio

  • copper 81
  • tin 14⇒?
  • lead 5
  • total 100 ⇒250
  • ?=250*14/100=35
5 0
2 years ago
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if a lake has high alkalinity, what is closest to the probability that the lake also has a shallow depth?
never [62]

Answer:

0.22

Step-by-step explanation:

Probability distribution is the function which describes the likelihood of possible values assuming a random variable. The alkalinity of lake is determined by dividing the high shallow depthness by the total of lake alkalinity. The shallow depth is 209 and the total alkalinity of the lake is 966. By dividing the depthness with alkalinity we get 0.22.

209/966 = 0.219

approximately 0.22

8 0
3 years ago
Twice a certain number is 58. 4 times that number will be <br> a) 4x58 b) 58 + 4 c) 58x2 d)8x58
irga5000 [103]

Answer:

c) 58x2

Step-by-step explanation:

Twice the number 29 is 58

So, 29 is related to 58

Therefore 29*4 = 58*2

4 0
2 years ago
Rewrite the equation by completing the square.<br> 4x2 + 28x + 49 = 0<br> (x+) =
Vlada [557]

Answer: x = - 3.5

Step-by-step explanation:

Rewrite the equation by completing the square.

4x2 + 28x + 49 = 0

Completing the square method :

Divide through by the Coefficient of x^2

x^2 + 7x + (49/4) = 0

a = 1, b = 7, c = 49/4

Move c to the right side of the equation

x^2 + 7x = - 49/4

Complete the square on the left hand side by squaring its half of the x term

(7/2)^2 = (49/4)

Add the output to both sides of the equation

x^2 + 7x + (49/4) = - (49/4) + (49/4)

(x + 7/2)^2 = 0

Square root of both sides

x + 7/2 = 0

x = - 7/2

x = - 3.5

4 0
3 years ago
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