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alukav5142 [94]
3 years ago
7

What’s the correct answer for this?

Mathematics
2 answers:
goblinko [34]3 years ago
5 0
5x + 34 = -2(1 - 7x)
5x + 34 = -2 + 14x
36 = 9x
x = 4
NO = -2(1 - 7*4)
NO = -2(1 - 28)
NO = -2 + 56
NO = 54
uysha [10]3 years ago
4 0

Answer:

54

Step-by-step explanation:

Since diameter AB divides MN into two equal parts hence

MO = NO

NOW,

5x+34 = -2(1-7x)

5x+34 = -2+14x

34+2 = 14x-5x

36 = 9x

Dividing both sides by 9

x = 4

Now,

NO = -2(1-7(4))

NO = -2+56

NO = -2+56

NO = 54

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The cost of 6one by two metere
Alik [6]

Answer:

Rs 17 3/4

Step-by-step explanation:

Cost of 6 1/2 m = 115 3/8

Cost of 1 m = x

  • x = 115 3/8 ÷ 6 1/2
  • x = (115*8 +3)/8 ÷ 13/2
  • x = 923/8 × 2/13
  • x = 923/(4*13)
  • x = 923/52
  • x = 17 39/52
  • x = 17 3/4

Cost of 1 meter is Rs 17 3/4

5 0
3 years ago
Marketing companies are interested in knowing the population percent of women who make the majority of household purchasing deci
zimovet [89]

Answer: 271

Step-by-step explanation:

As per given description in the question, we have

Critical value for 90% confidence interval = z_{\alpha/2}=1.645

[using z-value calculator ]

Margin of error : E= 0.05

Since prior estimate of population proportion is unknown so we take p= 0.5

Formula we use to find the sample size :

n=p(1-p)(\dfrac{z_{\alpha/2}}{E})^2  [we assume p= 0.50]

i.e. n=0.5(1-0.5)(\dfrac{1.645}{0.05})^2

Simplify :

\Rightarrow\ n=270.6025\approx271  

Therefore , the minimum sample size required = 271

3 0
3 years ago
What is the answer to <br> 3/2x - 5 = y
77julia77 [94]

Answer:

x = \frac{2y + 10}{3}

y = \frac{3}{2}x -5

Step-by-step explanation:

Hope this helps!

6 0
3 years ago
The rule for a line whose gradient is<br> -4 and y-intercept = 8 is:
irina [24]

Answer:

The rule for a line whose gradient is -4 and y-intercept = 8 is

y=-4x+8

Step-by-step explanation:

Equation of line slope intercept form is

y=mx+b  ------------- (1)

Where m is slope or gradient and b is y-intercept

<u>Here</u>

m=-4 \ \ \ and \ \ \ b=8

Substituting values in equation (1)

y=-4x+8

5 0
3 years ago
27 subtracted from a number can be written as?
natta225 [31]

Answer:

example : 100- 27= 73

Step-by-step explanation:

you take a number and then subtract by the number that you were given. I hope this helps!!

5 0
3 years ago
Read 2 more answers
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