2 years ago

Which is the best method to use in the following situation?

Mathematics

1 answer:

Jet001 [13]2 years ago

6 0

Answer:

A Substitution

Step-by-step explanation:

Trust me were doing this in math

You might be interested in

Find the sum of the series and show your process for finding each term leading to the final sum.

Crazy boy [7]

ANSWER

$\sum_{k=3}^5( - 2k + 5) = - 9$

EXPLANATION

The given series is

$\sum_{k=3}^5( - 2k + 5)$

This series is finite.

The expanded form is

$\sum_{k=3}^5( - 2k + 5) = ( - 2 \times 3 + 5) + ( - 2 \times 4 + 5) + ( - 2 \times 5 + 5)$

This simplifies to

$\sum_{k=3}^5( - 2k + 5) = ( - 6 + 5) + ( - 8+ 5) + ( - 10+ 5)$

$\sum_{k=3}^5( - 2k + 5) = ( - 1) + ( - 3) + ( - 5)$

$\sum_{k=3}^5( - 2k + 5) = - 9$

5 0

2 years ago

Write an inequality and solve the problem the sum of a number and 19 is at least 8.2.

Sunny_sXe [5.5K]

When you write it as an inequality you get x + 19 ≈ 8.2 and when you solve it it should look like x + 19 ≈ 8.2
19 ≈ - <u>19
</u> x ≈ -10.8<u>
</u>

4 0

2 years ago

PLS HELP WILL MARK BRAINLIESTTT What is the solution to this inequality?

vagabundo [1.1K]

Answer:

a. x > 0.2

Step-by-step explanation:

In either order, subtract the left-side constant and divide by the x-coefficient.

3x +2.4 > 3

3x > 0.6 . . . . . . subtract 2.4

x > 0.2 . . . . . . . divide by 3

x + 0.8 > 1 . . . . divide by 3

x > 0.2 . . . . . . . subtract 0.8

8 0

2 years ago

WILL GIVE BRAINLIEST

Elenna [48]

Answer:

C is correct

Step-by-step explanation:

do you know why? haha

5 0

2 years ago

What’s the best answer?

kow [346]

I think the last one

5 0

2 years ago