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4 years ago

Which trinomials are perfect square trinomials?

Mathematics

1 answer:

rodikova [14]4 years ago

4 0

They are B. The square of a binomial: (x + (-10) ) (x + (-10) )
D. The square of a binomial: (x + (-9) )(x + (-9) <span>)</span>

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BEST ANSWER GETS BRAINLIEST!! HELP PLEASE.

Goshia [24]

Answer:

$\text{The area of parallelogram is }8 ft^2$

$\text{The area of two triangles of equal area is }4 ft^2$

Step-by-step explanation:

Given a parallelogram ABCD is shown with DC equal to 9 feet and the perpendicular distance between AB and DC equal to 8 over 9 foot.

Part A: we have to find the area of ABCD.

$\text{Area of parallelogram=}Base\times height$

$=9\times \frac{8}{9}=8 ft^2$

$\text{The area of parallelogram is }8 ft^2$

Part B:

We have to decompose this parallelogram into two triangles.

Join diagonal AC

As the diagonal of parallelogram divides it into two congruent triangles of equal area

Hence, the area of each triangle is

$\frac{1}{2}ar(ABCD)$

$\frac{1}{2}\times 4=4 ft^2$

$\text{The area of two triangles of equal area is }4 ft^2$

3 0

3 years ago

7. If A = 2x + 3 and B = x^2 - 5x + 1, what is the value of A-5B?

taurus [48]

Answer:

$\huge \boxed{ \boxed{ \tt - 5 {x}^{2} + 27 x- 2}}$

Step-by-step explanation:

<h3>to understand this</h3><h3>you need to know about:</h3>

algebra
PEMDAS

<h3>given:</h3>

A=2x+3
B=x²-5x+1

A-5B

<h3>let's solve:</h3>

$step - 1 : define$

A-5B=2x+3-5(x²-5x+1)

$step - 2 : solve$

distribute -5 to the parentheses:2x+3-5x²+25x-5
rewrite:-5x²+2x+25x-5+3
combine like terms:-5x²+27x-2

and

we are done

7 0

3 years ago

This table shows the daily high temperature, in Fahrenheit, for two cities for ten days. City A 90 85 84 85 80 82 83 85 89 82 Ci

Anni [7]

Since the person didn't write the answer choices they were:

A. On average, city A was warmer than city B.

B. The median and mode are different for city B.

C. The temperature range between the maximum and minimum values for city A is greater than the temperature range between the maximum and minimum values for city B.

D. The median is less for city A than for city B.

I believe it is A personally cause i took the test and got it right

7 0

4 years ago

Read 2 more answers

Find the missing value:<br> 2 : x = 6 : 15<br> nts

lilavasa [31]

Answer:

x = 5

Step-by-step explanation:

2 : x 6 : 15

Divide the second by 3

6/3: 15/3

2:5

x = 5

4 0

4 years ago

Read 2 more answers

When a researcher needs to compare means for a variable grouped into two categories based on some less-than interval variable, a

kodGreya [7K]

When a researcher needs to compare means for a variable grouped into two categories based on some less-than interval variable, a t-test is appropriate.

To add, The analysis of two populations means through the use of statistical examination is called a t-test. Small sample sizes commonly use a t-test with two samples. <span> What statisticians call as test statistics are identified as t-values. A systematized value that is calculated from sample data during a hypothesis test is called a test statistic. The procedure that calculates the test statistic compares your data to what is expected under the </span>null hypothesis<span>.

You already have an experience with the basic principles behind a t-test if you’ve tried to communicated with a distracted teenager.</span>

8 0

3 years ago