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3 years ago

3x 2 + 2x - 5 and -4 + 7x 2

Mathematics

2 answers:

fiasKO [112]3 years ago

4 0

Answer:

16+2x-5adn

Step-by-step explanation:

6+2x-5adn-4+14. solution: is 16=2x-5adn

vladimir1956 [14]3 years ago

4 0

Answer:

$\boxed{ \bold{ \huge{ \boxed{ \sf{10 {x}^{2} + 2x - 9}}}}}$

Step-by-step explanation:

$\sf{3 {x}^{2} + 2x - 5 + ( - 4 + 7 {x}^{2} )}$

When there is a ( + ) in front of an expression in parentheses, there is no need to change the sign of each term.

That means , the expression remains the same.

⇒ $\sf{3 {x}^{2} + 2x - 5 - 4 + 7 {x}^{2} }$

Collect like terms

⇒ $\sf{ {10x}^{2} + 2x - 5 - 4}$

Calculate

⇒ $\sf{10 {x}^{2} + 2x - 9}$

Hope I helped!

Best regards!!

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C(4+3c) -0.75 (c+3) =<br><br> plzz help

Andreyy89

Answer:

if I am not mistaken the answer should be

11.25C?

Step-by-step explanation:

I did like terms to add 3c to 3c plus 4c minus .75 which would equal 11.25 c if it were to ask for expression then 12c-.75

3 0

3 years ago

Read 2 more answers

Woo-Jin and Kiran were asked to find an explicit formula for the sequence 64\,,\,16\,,\,4\,,\,1,...64,16,4,1,...64, comma, 16, c

olya-2409 [2.1K]

Answer:

$f(n)=64(\frac{1}{4})^{n-1}$

Step-by-step explanation:

The given sequence is

64, 16, 4, 1

$r_1=\dfrac{a_2}{a_1}=\dfrac{16}{64}=\dfrac{1}{4}$

$r_2=\dfrac{a_3}{a_2}=\dfrac{4}{16}=\dfrac{1}{4}$

$r_3=\dfrac{a_4}{a_3}=\dfrac{1}{4}$

It is a geometric series because it has a common ratio $r_1=r_2=r_3=\dfrac{1}{4}$ .

First term is 64.

The explicit formula of a geometric series is

$f(n)=ar^{n-1}$

where, a is first term and r is common ratio.

Substitute a=64 and r=1/4 in the above function.

$f(n)=64(\frac{1}{4})^{n-1}$

Therefore, the required explicit formula is $f(n)=64(\frac{1}{4})^{n-1}$ .

5 0

3 years ago

Read 2 more answers

Evaluate f(-1) for the function f(x) = -5x + 3 *

tatuchka [14]

Answer:

f(-1) = 8

Step-by-step explanation:

f(-1) = x

f(-1) = -5(-1) + 3

f(-1) = 8

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3 years ago

Charlotte is on spring break in Mexico. She purchases a souvenir for 153 pesos, which she charges to her credit card. If the exc

KATRIN_1 [288]

1.) multiply the US dollars by the exchange rate $213 x 80.76 = 17,201.88

2. )divide pesos by the exchange rate 158/11.69 = $13.5158 so (a) is the correct answer

So the answer is

$13.52

6 0

3 years ago

which of the following is a polynomial expression a. 2^x + x + 3 b. x^2 + 2x + 7 or c. 1/x + 1/x2 + 1/x3 ( btw the ^2 means it’s

NeTakaya

(b)

A polynomial has the form

$a_{0}$ $x^{n}$ ± $a_{1}$ $x^{n-1}$ + ....

the only expression fitting this description is : x² + 2x + 7

5 0

2 years ago