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3 years ago

PLZ HELP ME BY TONIGHT AT 12:30 ITS DUEEE ps/ plz answer ALLL the questions

Mathematics

1 answer:

kap26 [50]3 years ago

7 0

Since it decreases by 36 each year, the change would be 36+36+36+36=36*4=144

For a, we can plug in values for t, so 2000-(200*1)=1800 for the first year,
2000-(200*2)=1600 - do you see the pattern here? It subtracts by 200 every year, so 1600-200=1400 for the third year and 1400-200=1200 for the fourth year.

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Help on these precalc problems 14-20

Nadya [2.5K]

15) factor out cos: cos(x)(sin(x)+1)=0
Now this is true when either cos(x)=0 (x=pi/2 and 3pi/2)
Or when sin(x)=-1 (x=3pi/2)
So it's solutions are pi/2 and 3pi/2

7 0

3 years ago

20) A jar filled with only dimes and quarters contains a total of 23 coins. The value of all the coins in

nignag [31]

Answer:

6 quarters

Step-by-step explanation:

6 quarters = 1.50

So that would leave 17 dimes left

And 17 dimes left equal 1.70

1.50 + 1.70 = 3.20

8 0

3 years ago

Determine the value of f(2) that will lead to an average rate of change of 15 over the interval [2,6]. (HELP PLEASE)

Fofino [41]

Average Rate of Change/Slope Formula: $\frac{y_2-y_1}{x_2-x_1}$

So using points (6,71) and (2,y), and the slope of 15, plug them into the slope formula as such:

$\frac{71-y}{6-2}=15$

From here we can solve for y. Firstly, solve the subtraction:

$\frac{71-y}{4}=15$

Next, multiply both sides by 4:

$71-y=60$

Next, subtact both sides by 71:

$-y=-11$

Lastly, multiply both sides by -1, and <u>your final answer will be $y=11$ , or A.</u>

6 0

4 years ago

Is 5x + 5 equivalent 10x + 5 - 5x

MariettaO [177]

Answer: Yes

Step-by-step explanation:

10x - 5x = 5x

5x + 5 = 5x + 5

3 0

3 years ago

How long would it take to have $1335.60 in interest if principal is $5300 and interest rate is 7%

Solnce55 [7]

(5300 + 1335.6) = 5300(1 + 0.07)^n where n is the number of years required

6635.6 = 5300(1.07)^n
(1.07)^n = 1.252
n log 1.07 = log 1.252

n = log 1.252 / log 1.07 = 3.32 years Answer

5 0

3 years ago