Ask question

Ask question

All categories

3 years ago

11

What is the sum of (-2.1×+3.7) and (5 + 4.9×)

1 answer:

lions [1.4K]3 years ago

6 0

2.8x+8.7

Step-by-step explanation:

-2.1x+3.7+5+4.9x

=2.8x+8.7

You might be interested in

0.6% of 25 please help

Minchanka [31]

.6 * 25 = 15
.06 * 25 = 1.5

4 0

3 years ago

Read 2 more answers

Select all ratios equivalent to 3:2.

weeeeeb [17]

So the Correct answer would be all three of them.
This includes 27:18, 12:8, and 21:14.
The math behind this includes proportions.
For instance, if you multiple 3 by 9, you get 37. You have to multiple 2 by 9 now, and you should get 18. This is how all three of the answers are correct!

8 0

3 years ago

Read 2 more answers

Round to the place value of the underlined digit 12,387 and 2 is underlined

Viefleur [7K]

To the nearest place value of 2 would be 2000
so the whole number would be 12000

4 0

3 years ago

Write a rule for the nth term of the arithmetic sequence:<br><br> a11= 50, d = 7

ivolga24 [154]

Answer:

Required rule for $n^{th}$ is $a_{n}=7n-27$ .

Step-by-step explanation:

Given that,

$a_{11} = 50,\ \ d=7$

From the question: we have to write the $n^{th}$ term of Arithmetic sequence.

Arithmetic Sequence or Arithmetic progression (A.P) : It is a sequence which possess that difference between of two successive sequence is always constant.

$a_{1} ,a_{2},a_{3},a_{4}.....................a_{n-1},a_{n}$

where, $a_{1}$ is the first term of A.P

$d$ is the common difference.

$a_{n}$ is the last term or general term.

The above sequence to be in A.P then their common difference should be equal.

$d=a_{2}-a_{1} =a_{3}-a_{2}=a_{4} -a_{3} ..........................a_{n}-a_{n-1}$

Now, Formula of General Term is $a_{n}=a+(n-1)d$

So, $a_{11}= a+(11-1)d\\ a_{11} = a+10d$

Substituting the value of $a_{11} = 50,\ \ d=7$ we get,

$50=a+10\times7\\50=a+70\\a=-20$

Then General term ( $a_{n}$ ) of given data is

$a_{n}=-20+(n-1)7\\a_{n}=-20+7n-7\\a_{n}=7n-27$

Therefore, Required rule for $n^{th}$ is $a_{n}=7n-27$ .

5 0

3 years ago

A suitcase measure 24 inches long and 18 inches high, what is the diagonal length of the suitcase to the nearest tenth of a foot

Alik [6]

Answer:

The diagonal length of the suitcase is 30 inches.

Hope it helps. :)

7 0

2 years ago