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4 years ago

Evaluate the following expression when a=3,b=9,c=6,5ab

Mathematics

1 answer:

vesna_86 [32]4 years ago

6 0

Answer:

135

Explanation:

Substitute 3 and 9 for a & b

5(3)(9)

= 135

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The nth term of a sequence is n^2 + 20.

Olegator [25]

Answer:

$\large\boxed{a)\ 21,\ 24,\ 29}\\\boxed{b)\ \text{five terms}}$

Step-by-step explanation:

$a_n=n^2+20\\\\a)\\\\\text{Substitute}\ n=1,\ n=2\ \text{and}\ n=3\ \text{to the }\ a_n:\\\\a_1=1^2+20=1+20=21\\\\a_2=2^2+20=4+20=24\\\\a_3=3^2+20=9+20=29$

$b)\\\\\text{You have to solve the inequality:}\\\\n^2+20$

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3 years ago

SIMPLE SEVENTH GRADE MATH PROBLEM. GOVING BRAINLIEST

adelina 88 [10]

Answer:

D is the answer

Step-by-step explanation:

Well 35 dollar one time fee

plus 15 per hour

If used 1 hour 15+35=50

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3 years ago

Read 2 more answers

Researches notice a grey whale cruising at a depth of 233 feet below sea level. It rises 73 feet and then comes up another 40 fe

musickatia [10]

Answer:

The whale is at a depth 120 feet below the sea level.

Step-by-step explanation:

A grey whale is cruising at a depth of 233 feet below sea level. The depth below the sea level has the negative position, thus the initial position of the whale is -233.

It rises 73 feet, the position of the whale becomes 73 feet higher. This means we should add 73.

Then it comes up another 40 feet, so we need to add 40.

Mathematically,

$-233+73+40=-160+40=-120$

The whale is at a depth 120 feet below the sea level.

3 0

3 years ago

How can 3/7 divided by 2/4 be written in simplest form?

vova2212 [387]

Presenting your problem symbolically:

3
--
7

==== becomes
2
---
4

3
---
7

====

1
---
2

To divide by 1/2, multiply by 2/1:

3 2
-- * ---
7 1

Multiplying, we get 6/7.

5 0

4 years ago

Z 1 t = [?]√ X = Z 16

LiRa [457]

Answer: $8\sqrt{5}$