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3 years ago

(08.05)

Mathematics

2 answers:

grin007 [14]3 years ago

6 0

Answer:

Its the first one

Step-by-step explanation:

Bumek [7]3 years ago

4 0

Answer:

Step-by-step explanation:

To get the average of 5 tests you add up all five scores then you divide it by 5.

Multiply 90 by 5 to get 450 then subtract all the other test scores to get 96. That's your answer.

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3. Which one of the following is an arithmetic sequence?

valentina_108 [34]

Hi,

A is an arithmetic sequence
U(n)=U(n-1)+3

7 0

3 years ago

F(x) = –22 – 9x + 20<br> Find f(9)

Nikolay [14]

Answer: -83

Step-by-step explanation:

f(9)--22+20-9*(9)=-2-81=-83

8 0

2 years ago

Read 2 more answers

Use the diagram below to answer questions 1-6. All rooms are rectangular. 1. What is the value of side A? Explain your thinking.

Anastasy [175]

The answer is A = x since the opposite sides of a rectangle are the same length.
We'll have B = 9x+2 since this must add to x+4 to result in 10x+6. You could also do (10x+6) - (x+4) and you'll end up with 9x+2.
On the far left side, (5x-3)+A = 5x-3+x = 6x-3. The far right side must add to this. So, x+C+x-2 = 6x-3 turns into C = 4x-1 after isolating C.
Multiply out (5x-3) with (9x+2) to get the full area of 45x^2-17x-6. The steps are shown below

(5x-3)(9x+2)

5x(9x+2)-3(9x+2)

45x^2+10x-27x-6

45x^2-17x-6

You could also use the FOIL rule to get this answer. The box method is another alternative.

4 0

3 years ago

1. A student invests $500 in a savings account that earns 4% interest per

bixtya [17]

Answer:

The equation can be used to determine the amount of money S(t) that her savings account has after t years is $S(t)=500(1.04)^t$

Step-by-step explanation:

A student invests $500 in a savings account

Principal = $500

Rate of interest = 4% = 0.04

We are supposed to find equation can be used to determine the amount of money S(t) that her savings account has after t years

Formula : $A=P(1+r)^t$

Where A is the amount after t years =S(t)

t = time

r = rate of interest in decimals =0.04

P = Principal=500

Substitute the value in the formula :

So, $S(t)=500(1+0.04)^t$

$S(t)=500(1.04)^t$

Hence The equation can be used to determine the amount of money S(t) that her savings account has after t years is $S(t)=500(1.04)^t$

6 0

3 years ago

Devin is going to deposit $3,000 in an account that earns 3.5% interest for 10 years. How much more INTEREST will he earn if the

Andrews [41]

Answer:

the answer will be rs.1050as more interest

7 0

3 years ago