3 years ago

Unit Test Review

Mathematics

1 answer:

LiRa [457]3 years ago

3 0

Answer:

x - 1 < n < 3x + 5

Step-by-step explanation:

If you have two sides of a triangle, the length of the third side is at least the difference between the other two sides, and at most the sum of the other two sides.

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Preform the indicated operation 15 - (-11)

xenn [34]

Answer:It would be: 15 - (-11)

= 15 + 11

= 26

Step-by-step explanation:

5 0

3 years ago

4z-(-3z) can you help me

Korvikt [17]

Answer:

Step-by-step explanation:

4z-(-3z).

Two negatives equal a positive only when they are right next to each other.

4z+3z=7z. Hope this helps :D

8 0

3 years ago

3.920 * (1.018)^x = 5.500 X=?

Andrei [34K]

Answer:

Step-by-step explanation:

3.920(1.018)ˣ = 5.500

First we can divide both sides by 3.920 to get: (1.108)ˣ = 1.403
Then we can take the natural log of both sides to get: ln[(1.108)ˣ] = ln(1.403)
We can then use logarithmic rules to move the x exponent to the front: xln(1.108) = ln(1.403)
Then we can divide both sides by ln(1.108) to get: $x=\frac{ln(1.403)}{ln(1.018)}$
Then using a calculator we get x = 18.98 ≈19