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3 years ago

PLEASEE HELPP!!!! ASAPP PLEASE PLEASEE!!!

Mathematics

2 answers:

Darya [45]3 years ago

5 0

Answer:

two are correct: side ED is equal to DC, and ABCDE is a pentagon

Step-by-step explanation:

pentagon is a polygon having 5 sides

You can find the length of BC by using the distance formula

omeli [17]3 years ago

4 0

Answer:

a, d to make it simpler

Step-by-step explanation:

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What is the value of the expression below?<br><br><br> (3 1/2 - 9 3/4) ÷ (-2.5)

Alexandra [31]

Answer:

2.5

Step-by-step explanation:

3 1/2 - 9 3/4 =

3 2/4 - 9 3/4 = -6 1/4

-6 1/4 = -6.25 ÷ (-2.5) = 2.5

5 0

3 years ago

Question 8(Multiple Choice Worth 3 points)

Nastasia [14]

Answer: C) F(4) = 0

Detailed Explanation:

A zero/root of a polynomial is a value of the variable which makes the value of the polynomial to 0.

Therefore, when (x - 4) is a Factor :-
=> x - 4 = 0
=> x = 4

=> x = 4 is the Zero of the Polynomial.

4 0

2 years ago

What is 4 divided by 2 3/4. for 6th grade math

Goshia [24]

Answer:

3 1/3

Step-by-step explanation:

4/(2 3/4)

4/(6/4)

4÷6/4

4*4/6

20/6

3 2/6 =3 1/3

8 0

3 years ago

A random sample of 20 houses selected from a city showed that the mean size of these houses is 1880 square feet with a standard

azamat

Answer:

Option C

Step-by-step explanation:

Given that for a random sample of 20 houses selected from a city showed that the mean size of these houses is 1880 square feet with a standard deviation of 320 square feet.

X, the sizes of houses is Normal

Hence sample mean will be normal with

Mean = 1880

and std dev = $\frac{320}{\sqrt{20} } \\=71.5542$

For 90% confidence interval critical value for t with degree of freedom 19 is

1.328

Confidence interval upper bound

= mean + margin of error

= $1880+1.328*71.55\\=1975$

Option C is right

3 0

3 years ago

a coat was marked down by 60 percent from its original price of $99 . including an 8% sale tax , what is the final cost of the c

Leni [432]

Answer:

i think its 42.77... might be wrong tho

Step-by-step explanation:

being marked down by 60 percent means to multiply original number by 0.4

so we get 39.6

the multiply it by 1.08 to get 42.768

3 0

3 years ago

Read 2 more answers