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3 years ago

Which expression is equivalent to 2x2 – 2x + 7?

Mathematics

2 answers:

diamong [38]3 years ago

4 0

11-2x would be the answer u are looking for. Hope this helps!

vitfil [10]3 years ago

3 0

Assuming 2x2 is 2 multiplied by 2, and not a variable..

1. Multiply 2 and 2.

4 - 2x +7

2. Add 7 to 4.

11 - 2x.

Since the answer can no longer be simplified, 11 - 2x is your final answer.

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Why are astrologers not considered to be scientists?

Pachacha [2.7K]

The answer is: [C]: "Astrologers do not use the scientific method."
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Note: Choice [A] is incorrect. Astrologers do use tools.
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Choice [B] is incorrect. Some astrologers do observe the universe.
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Choice [D] is incorrect. Astrologers may or may not go to college; and whether or not they do or do not is irrelevant as regard to whether to they are considered "scientists".
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8 0

2 years ago

Read 2 more answers

Ellie opened a savings account and deposited $200.00 as principal. The account earns 7% interest, compounded continuously.

mixas84 [53]

Answer: a is 200e^.07t the answer to b is 402.75

Step-by-step explanation:

Because I got it wrong and it showed me the correct answers

4 0

2 years ago

The sum of the first two terms of an infinite GP is 6 and each term is 5 times the sum of the succeeding termsthen the second te

kozerog [31]

Answer:

$\dfrac{6}{7}$ .

Step-by-step explanation:

It is given that the sum of first two terms of an infinite GP is 6.

nth term of a GP is

$a_n=ar^{n-1}$

$a+ar=6$ ...(1)

Each term is 5 times the sum of the succeeding terms.

$a_n=5(a_{n+1}+a_{n+2}+...+\infty)$

$ar^{n-1}=5(ar^n+ar^{n+1}+...+\infty)$

$ar^{n-1}=5ar^n(1+r+r^2+...+\infty)$

Divide both sides by a.

$r^{n-1}=5r^n(\dfrac{1}{1-r})$ $[\text{Sum of infinite GP}=\dfrac{a}{1-r}]$

$\dfrac{r^n}{r}=\dfrac{5r^n}{1-r}$

$\dfrac{1}{r}=\dfrac{5}{1-r}$

$1-r=5r$

$1=6r$

$\dfrac{1}{6}=r$

The common ratio is 1/6.

Put r=1/6 in (1).

$a+a(\dfrac{1}{6})=6$

$6a+a=36$

$7a=36$

$a=\dfrac{36}{7}$

Second term $ar=\dfrac{36}{7}\times \dfrac{1}{6}=\dfrac{6}{7}$

Therefore, the second term is $\dfrac{6}{7}$ .

4 0

2 years ago

Tom read 20 books, 12 magazines, and 18 newspaper articles last year.

Mamont248 [21]

Answer:

24%

Step-by-step explanation:

12/50=24%

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2 years ago

Read 2 more answers

The answer to number 7

slava [35]

The length of the rectangle in #7 is 18 ft
I cannot see which region is shaded so I will solve for both:
1.
the radius of one circle is 3:
A= $\pi$ $r^{2}$
A=(3.14)(9)
A=(28.26)
The area of the three circles is 84.78 feet squared

Area of rectangle is 108 feet squared (16*8)

108-84.78=23.22

The area of the shape around the circles is 23.22 feet squared

2:
The area of 1 circle is 28.26
The area of 3 circles is 84.78 feet squared
The area of the circles in the rectangle is 84.78 feet squared.

5 0

3 years ago