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3 years ago

When 6x^2-4x+3 is subtracted from 3x^2-2x+3 The result is

Mathematics

2 answers:

ladessa [460]3 years ago

6 0

Answer:

-3x^2 +2x

Step-by-step explanation:

3x^2-2x+3 - (6x^2-4x+3)

Distribute the minus sign

3x^2-2x+3 - 6x^2+4x-3

Combine like terms

-3x^2 +2x

Svetach [21]3 years ago

4 0

3x^2 -6x + 6 :) hope this is alright

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5(6x+2)+4(5x+5)+4=50x+34

makkiz [27]

Answer:

0=0

Step-by-step explanation:

50x+34=50x+34

50x=50x

50x - 50x = 50x - 50x

0=0

7 0

3 years ago

Read 2 more answers

When is it useful to guess check to solve mathematical problems?

Ad libitum [116K]

Answer:

often one of the first strategies that students learn when solving problems. This is a flexible strategy that is often used as a starting point when solving a problem, and can be used as a safety net, when no other strategy is immediately obvious.

Step-by-step explanation:

8 0

3 years ago

║║║║The length of a rectangle is 5 inches more than its width, x. The area of a rectangle can be represented by the equation x 2

lbvjy [14]

So given l = x+5 and w = x

area represented by equation x^2 +5x = 300

x^2 +5x -300 =0

(x+20)(x-15)=0

x+20 =0
x = -20

x-15=0
x=15

so from these result the width of rectangle equal 15 inches and the length of rectangle equal 20 inches

3 0

3 years ago

Use the given degree of confidence and sample data to construct interval for the population proportion. Of 369 randomly selected

Alexxx [7]

Answer:

e) (3.77%, 8.70%)

95% confidence interval for the percentage of all medical students who plan to work in a rural community

(3.83% , 8.69%)

95% confidence level for the population proportion who blame oil companies for the recent increase in gasoline prices

(0.406 , 0.454)

Step-by-step explanation:

Step(i):-

Given random sample size 'n' = 369

Sample proportion

$p = \frac{x}{n} = \frac{23}{369} = 0.0623$

95% confidence intervals are determined by

$(p^{-} - Z_{0.05} \sqrt{\frac{p(1-p)}{n} } , p^{-} + Z_{0.05} \sqrt{\frac{p(1-p)}{n} })$

$(0.0623 - 1.96 \sqrt{\frac{0.0623(1-0.0623)}{369} } , 0.0623 + 1.96\sqrt{\frac{0.0623(1-0.0623)}{369} })$

(0.0623 - 0.0246 , 0.0623 + 0.0246)

(0.0383 , 0.0869)

(3.83% , 8.69%)

95% confidence interval for the percentage of all medical students who plan to work in a rural community

(3.83% , 8.69%)

Step(ii):-

Given 43% of those polled blamed of companies the most for the recent increase in gasoline prices

sample proportion 'p' = 0.43

Given Margin of error (M.E) = 0.024

95% confidence intervals are determined by

$(p^{-} - Z_{0.05} \sqrt{\frac{p(1-p)}{n} } , p^{-} + Z_{0.05} \sqrt{\frac{p(1-p)}{n} })$

$(0.43 - 0.024 } , 0.43 +0.024 )$

(0.406 , 0.454)

Final answer:-

95% confidence level for the population proportion who blame oil companies for the recent increase in gasoline prices

(0.406 , 0.454)

6 0

3 years ago

How many solutions does the equation 5x + 3x − 4 = 10 have? Zero One Two Infinitely many (please explain)

Ymorist [56]

Here are the steps to solve:
1. Combine 5x and 3x Now you have 8x -4 = 10
2. Get x alone by adding 4 (But be fair so you have to do it on both sides)
Now you have 8x = 14
3. Divide both sides by 8

x = 8/14 (Which is 0.57142857)

3 0

3 years ago