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3 years ago

6 = -4x + y -5x - y = 21 Please Help Fast!!!!!!

Mathematics

1 answer:

pav-90 [236]3 years ago

4 0

Step-by-step explanation:

What do you need help with??? Graphing??? Substitution???

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A ball is thrown upward from the top of a building. The function below shows the height of the ball in relation to sea level, f(

gavmur [86]

We have the following function:
f(t) = −16t2 + 34t + 546
By definition, the average rate of change is:
Avr = (f (t2) - f (t1)) / (t2 - t1)
We have then:
For t1 = 5:
f (5) = -16*(5)^2 + 34*(5) + 546
f (5) = 316
For t2 = 5:
f (7) = -16*(7)^2 + 34*(7) + 546
f (7) = 0
Substituting values:
Avr = (0 - 316) / (7 - 5)
Avr = -158
Answer:
The average rate of change of f (t) from t = 5 seconds to t = 7 seconds is -158 feet per second.

6 0

3 years ago

What is the measure of angle x?<br> 37<br> Enter your answer in the box<br> 82<br> m3 =

Lana71 [14]

Answer:

Step-by-step explanation:

we kno that a triangle is 180 degrees so we just add the first two angles

37 + 82 = 119

then subtract that from 180

180 - 119 = 61

so x = 61 degrees

lmk if this wrong and ill fix it

hope this helps <3

8 0

2 years ago

Which of the following is the interest on $6000 at 6% compounded semiannually for eight years?

ryzh [129]

Answer:

$3628.24

Step-by-step explanation:

we use the formula for accrued value (A) with compounded interest:

$A=P(1+\frac{r}{n})^{n*t}$

where A= accrued value (principal plus the accumulated interest)

P = principal -> in our case $6000

r = annual interest rate (in decimal form) -> in our case 0.06

n = number of compoundings per year. In our case 2 (semiannually)

t = time in years -> in our case 8

$A=P(1+\frac{r}{n})^{n*t}\\A = 6000(1+\frac{0.06}{2})^{16}\\ A= 6000(1+0.03)^{16}\\A = $9628.24$

Since this is the value of principal plus accumulated interest, we subtract from it the principal ($6000) to get the value of just the interest:

$9628.24 - $6000 = $3628.24

4 0

2 years ago

What is 1/5 divided by 4??

erica [24]

That is the answer 1/20

6 0

3 years ago

Read 2 more answers

What is the probability that in a class of 20 students, 2 of them will have the same birthday?

earnstyle [38]

There would be a 10% chance that they would have the same birthday

8 0

3 years ago