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solong [7]
3 years ago
7

Create an addition or subtraction problem involving polynomial expressions so that the answer can be shown using polynomial tile

s. Use the Graphing Calculator to verify your solution. Save a snapshot for others to reference as they attempt your challenge.
Mathematics
1 answer:
VLD [36.1K]3 years ago
7 0

Answer:

a^2 - b^2

Step-by-step explanation:

a ( a - b ) + b ( a - b (

= a^2 - ab + ba - b^2

= a^2 - ab + ab - b^2

= a^2 + 0 - b^2

= a^2 - b^2

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Simplify the expression. -3x + 6 + -4x + 2
irina [24]

Answer:

-x +8

Step-by-step explanation:

3x + 6 + -4x + 2

Combine like terms

3x-4x +6+2

-x +8

4 0
3 years ago
. A teenager bought some vintage t-shirts online. The total cost, C, in dollars, of t-shirts, t, can be found by using the equat
Ray Of Light [21]
469=18.50t +25
444=18.50t
t=24
he bought 24 t-shirts
6 0
3 years ago
Pls help me I’m struggling
Leni [432]

Answer:  Peter  < 65

Step-by-step explanation:   Peter has less than charlie so charlie is more than or/and equal to being solid line underneath or solid line on graph represented by ≥ 65 stays equal to 65 or more which is a<em> correct statement</em> for charlie as charlie cards are<em> increasing </em>at 65 and has 65 and Peter is shown as ≤ 65 but is slightly wrong as we were told in question that 'he has just started collecting' this means it has to be or certainly less than charlie has - Just in diagram is interpreted as a <em>dotted line on graph coordinates</em><em> </em>represented by < 65<em> instead IS LESS THAN 65</em> would be correct way to interprete inequality of<em> Peters relationship value </em>to that of charlie given amount

8 0
2 years ago
In a survey, 498 out of 1,397 us adults said they drink at least 4 cups of coffee a day. find a point estimate (p) for the popul
valentinak56 [21]

Let X be the number of adults who drink at least 4 cups of coffee a day. Let n be the sample size and p be the proportion of adults who drink at least 4 cups of coffee a day.

Given : n=1397 and x =498

a. Point estimate p for the population proportion is sample proportion

p = x/n = 498/1397 = 0.3564

p= 0.3564

b .90% confidence interval for population proportion.

The distribution of sample proportion is normal with parameters

mean =p =0.3564

standard deviation = \sqrt{\frac{p*(1-p)}{n}}

= \sqrt{\frac{0.3564*(1-0.3564)}{1397}}

standard deviation = 0.0128

The 90% confidence interval for population proportion is

(p - Margin of error, p+ margin of error)

where Margin of error = z _{\alpha/2}\sqrt{\frac{p*(1-p)}{n}    }

where z_{\alpha/2} is critical z score value for 90% confidence interval

alpha = 1- c = 1 - 0.9 = 0.1

z_{\alpha/2} = z_{0.1/2} = z (0.05)

This is z score value for which probability below -z is 0.05 and probability above z is 0.05

Using excel function to find z score for probability 0.05

P(Z < z) = 0.05

z = NORM.S.INV(0.05) = -1.645

For calculating confidence interval we consider positive z score value

z = 1.645

Margin of error = z _{\alpha/2}\sqrt{\frac{p*(1-p)}{n}    }

= 1.645\sqrt{\frac{0.3564*(1-0.3564)}{1397}    }

= 1.645 * 0.0128

Margin of error = 0.021

The 90% confidence interval for population proportion is

(p - Margin of error, p+ margin of error)

(0.3564 - 0.021, 0.3564 + 0.021)

(0.3354 , 0.3774)

a 90% confidence interval for the proportion of adults who drink at least 4 cups of coffee a day is (0.3354, 0.3774)

8 0
4 years ago
A trapezoid has vertices A(–5, 4), B(–3, 2), C(–7, –2), and D(–7, 2). It is transformed according to the rule ry-axisT(–2, 3). W
Artist 52 [7]

Answer:

(9,1)

Step-by-step explanation:

8 0
3 years ago
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