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3 years ago

Miguel did the following math problem: 65 ∙ 64 = 369. Which of the following is a true statement

Mathematics

2 answers:

leva [86]3 years ago

7 0

C. He is incorrect because he multiplied the bases

alexdok [17]3 years ago

4 0

C. is the answer to the question

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Simplify (2x 4)(x-2)

sesenic [268]

3x*6
you will add 2x plus one x then 4 - -2

8 0

3 years ago

Write three different polynomial functions such that f(3) = 2.

ahrayia [7]

Answer:

1. $f (x) = x-1$

2. $f (x) = x^2-7$

3. $f (x) = x^3-25$

Step-by-step explanation:

Many polynomials can be formulated so that $f(3) = 2$ , some are as follows:

1. $f (x) = x-1$

verification:

$f (3) = 3-1 = 2$

meets the condition.

2. $f (x) = x^2-7$

verification:

$f(3)=3^2-9=9-7=2$

also meets the condition

3. $f (x) = x^3-25$

verification:

$f (3) =3^3-25=27-25 = 2$

It is also valid.

6 0

3 years ago

What is the sum of the series *picture attached*

Ksivusya [100]

Answer:

$\sum_{n=4}^{18}(n+1)^2=2440$

Step-by-step explanation:

Series: $\sum_{n=4}^{18} (n+1)^2$

Formula : $\sum_{k=m}^n=\sum_{k=1}^n-\sum_{k=1}^{m-1}$

$\Rightarrow \sum_{n=4}^{18}(n+1)^2=\sum_{n=1}^{18}(n+1)^2-\sum_{n=1}^{3}(n+1)^2$

$\sum_{n=1}^{18}(n+1)^2=2469$

$\sum_{n=1}^{3}(n+1)^2=29$

$\Rightarrow \sum_{n=4}^{18}(n+1)^2=2469-29$

$\Rightarrow \sum_{n=4}^{18}(n+1)^2=2440$

So, Option C is true

8 0

3 years ago

Mai runs around a 400 meter track at a constant speed of 250 meters per minute. How many minutes does it take Mai to complete 4

goldfiish [28.3K]

Answer:

6.4 minutes, or 6 minutes and 24 seconds

Step-by-step explanation:

She is running 4 laps, so she is running 1600 meters total. If she runs 250 meters per minute, divide 1600 by 250 to determine how many minutes it will take...

1600/250 = 6.4

Which is 6 minutes + 0.4 minutes

*there are 60 seconds in a minute, so the 0.4 represents 40% of another minute. Multiply 60 by 0.4 to see how many seconds this is...

(0.4)60 = 24 seconds,

So she ran the laps in 6 minutes and 24 seconds

7 0

4 years ago

Read 2 more answers

Maria's art class is 7 hours long. How long is her class in minutes?

melisa1 [442]

Answer:

420 minutes

Step-by-step explanation:

You would have to multiply 7 hours by 60 minutes to get 420 minutes.

Hope this helped you out!!

4 0

3 years ago