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Lorico [155]
3 years ago
11

Write the rate of decay of the function as a percent. y=12(.9)

Mathematics
1 answer:
sleet_krkn [62]3 years ago
3 0

Answer:

18

Step-by-step explanation:

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The temperature in a room begins at 70°F and decreases at a rate of 8 F per hour. Which of the following tables represents this
8_murik_8 [283]

Answer:

there's not options :/ nobody can answer this

6 0
3 years ago
Please Help !! <br>The picture of the question is attached. ​
kirza4 [7]

Answer:

x = 90°

Step-by-step explanation:

Using the identity

cos²x = 1 - sin²x

Given

cos²x - sin x + 1 = 0

1 - sin²x - sin x + 1 = 0

- sin²x - sin x + 2 = 0 ← quadratic equation in sin x ( multiply through by - 1 )

sin²x + sin x - 2 = 0 ← in standard form

(sinx + 2)(sinx - 1) = 0 ← in factored form

Equate each factor to zero and solve for x

sinx + 2 = 0 ⇒ sinx = - 2 ← has no solution as - 1 ≤ x ≤ 1

sinx - 1 = 0 ⇒ sinx = 1 ⇒ x = 90°

solution is x = 90°

3 0
3 years ago
Evaluate the expression for k=8<br><br> -1.3k=
Svet_ta [14]

Answer:

-10.4

Step-by-step explanation:

-1.3(8)=-10.4

5 0
3 years ago
The pair of variables x=5, y=7 is the solution to the equation ax–2y=1. Find the coefficient a.
Wewaii [24]

Answer:

a=3

Step-by-step explanation:

This should be very simple, just substitute xy and y for 5 and 7 respectively, so 5a-2*7=1, or 5a-14=1, or 5a=15, if we divide both sides by 5, we get a=3

5 0
3 years ago
Read 2 more answers
Mr. Rr the Rreliable Rrobot has been programmed to whistle every 18 seconds and do a jumping jack every 42 seconds, starting fro
mixer [17]
15 mins = 900 s

We need to find all common multiples of 18 and 42 less than or equal 900.
We'll find the least common multiple first.

18|2
9|3
3|3
1

42|2
21|3
7|7

\text{lcm}(18,42)=2\cdot3^2\cdot7=126

Now, we nned to find all multiples of 126 that are less than or equal 900.
Those are 126,252,378,504,630,756,882. There are 7 of those.
Therefore the answer is 7.

8 0
4 years ago
Read 2 more answers
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