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never [62]
3 years ago
10

(7x+3)(x-9) need help

Mathematics
1 answer:
Natalka [10]3 years ago
8 0
7x^2-63x+3x-27=0

Simplify. 

7x^2-60x-27=0

To find value of x, 7x+3=0
x-9=0 

x1=-3/7
x2=9

Substitute back in equation to find the answer either x1 or x2
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A quantity with an initial value of 600 decays exponentially at a rate of
Snowcat [4.5K]

Answer:

The value of the quantity after 87 months will be of 599.64.

Step-by-step explanation:

A quantity with an initial value of 600 decays exponentially at a rate of 0.05% every 6 years.

This means that the quantity, after t periods of 6 years, is given by:

Q(t) = 600(1 - 0.0005)^{t}

What is the value of the quantity after 87 months, to the nearest hundredth?

6 years = 6*12 = 72 months

So 87 months is 87/72 = 1.2083 periods of 6 years. So we have to find Q(1.2083).

Q(t) = 600(1 - 0.0005)^{t}

Q(1.2083) = 600(1 - 0.0005)^{1.2083} = 599.64

The value of the quantity after 87 months will be of 599.64.

8 0
3 years ago
688×29=<br>how to do this step by stwp
laila [671]

688

x 29

  6192  

1376 x  

19952


So you start by taking 9 from 29 and multiplying it by 688. when you get the answer put it below the line. then multiply the 2 from the 29 and whne you get the answer put a zero on the end and then add the answer you got from 9x688  (6192) and 2x688 (13760) and then thats youre answer. hope it helps!

8 0
3 years ago
9 - ? = 8.82
stepan [7]
1.18 is the answer!
8 0
2 years ago
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Can someone pls give me the answer to this?
inn [45]

Answer:

This is all the above

Step-by-step explanation:

all answers are true to this graph

8 0
3 years ago
I got this problem wrong and I have no idea how to solve it.<br>Help please ☕​
astra-53 [7]

Answer:

Step-by-step explanation:

8 0
2 years ago
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