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3 years ago

2) X= 2y + 121 + 17 Can you show me step by step

Mathematics

1 answer:

defon3 years ago

4 0

Answer:

Step-by-step explanation:

x=2y+121+17 combine like terms (121+17)

x=2y+138 subtract 138 from both sides

-138 -138

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(Will give brainliest help asap pls)

DanielleElmas [232]

D because 5.50 is x and your y so boom D

6 0

2 years ago

The product shown is a difference of squares. What is the missing constant term in the second factor?

34kurt

Difference of two squares is of the form (a + b)(a - b) or vice-versa. Here, a = -5x and b = 3.
(-5x - 3)(-5x + 3)
Answer: 3

7 0

3 years ago

Read 2 more answers

1 20/50 as a decimal PLEASE THIS IS DEW TOOMARROW MORNING

Gnesinka [82]

Answer:

1.4

Step-by-step explanation:

Ex.: 1/2, 2 1/2, 5/3, etc. Note that 2 1/2 means two and half = 2 + 1/2 = 2.5

7 0

3 years ago

A random sample of 1000 registered voters in Flagstaff found 760 registered voters who support immigration reform. Find a 95% co

dusya [7]

Answer: $(0.7335,\ 0.7865)$

Step-by-step explanation:

Given : A random sample of 1000 registered voters in Flagstaff found 760 registered voters who support immigration reform.

sample size : n= 1000

sample proportion: $\hat{p}=\dfrac{760}{1000}=0.76$

Critical value for 95% confidence interval = $z_{\alpha/2}=1.96$

Confidence interval :

$\hat{p}\pm z_{\alpha/2}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}\\\\=0.76\pm(1.96)\sqrt{\dfrac{0.76(1-0.76)}{1000}}\\\\=0.76\pm0.0264708866493\\\\\approx0.76\pm0.0265\\\\=(0.76-0.0265,\ 0.76+0.0265)=(0.7335,\ 0.7865)$

Hence, the 95% confidence interval for the true percent of registered voters in Flagstaff who support immigration reform: $(0.7335,\ 0.7865)$

6 0

4 years ago

A 75% increase followed by a 50% decrease

stiv31 [10]

Answer:

12.5% decrease

Step-by-step explanation:

Let X be the initial value

75% increase is 175% of X

= 1.75X

50% decrease = 0.5

0.5(1.75X)

0.875X (less than X, so decrease)

87.5% of X

100 - 87.5 = 12.5% decrease

7 0

3 years ago