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viva [34]
3 years ago
9

Solve the system of equations. 2x + 7y = 3 x= -4y

Mathematics
1 answer:
I am Lyosha [343]3 years ago
5 0

Answer:

(12, -3)

Step-by-step explanation:

You can solve it algebraically or graphically. Graphically you find the intersection point. Algebraically with substitution/elimination.

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What square root expression represents the golden ratio?
Juli2301 [7.4K]
I believe the phi ratio^2 = 1 + phi ratio
phi ratio = 1.6180339
phi ratio^2 = 2.6180339


4 0
3 years ago
Which results only in a horizontal compression of y=1/x by a factor of 6
yan [13]

we are given

parent function as

y=\frac{1}{x}

Suppose, we are given a function y=f(x) is compressed horizontally by ''b'' units

where b>1

so, we can write as

new function as

y=f(bx)

Here, it is compressed by factor 6

so, we can replace x as 6x

and we get

y=\frac{1}{6x}

so, option-A.........Answer

7 0
3 years ago
Read 2 more answers
A theater production charges $21 for adult tickets and $15 for student tickets. If the
Zarrin [17]

Answer:

The number of adult tickets sold was 67, and the number of student tickets sold was 35.

Step-by-step explanation:

7 0
2 years ago
How long will it take for 2 g of a sample of iodine-131, which has a half-life of about 8 days, to decay to 0.04 g?
Zigmanuir [339]
We know that

<span>This problem can be represented through the following equation
</span>
A = A₀(1/2)^t/h
where
A----------->  is the amount of substance left after time t
A₀ ----------> is the original amount---------> 2 g
h------------->  is the half-life-----------> 8 days

for A=0.04 g
t=?
0.04 = 2(1/2)^t/8
0.02 = (1/2)^t/8
Take ln on both sides:
ln(0.02) = ln [(1/2)^t/8]
ln(0.02) = (t/8)(ln 1/2)
t = 8*ln(0.02)/ln(1/2)
t = 45.15 days

the answer is 45.15 days
6 0
3 years ago
.
Travka [436]

Answer:

$203.04

Step-by-step explanation:

First, you have to calculate the cost of sending one free sample and you could use a rule of three to find it:

23 onces → $0.36

69 onces →     x

x=(69 onces*$0.36)/23 onces= $1.08

Then, you can multiply the cost of sending one free sample for the quantity of samples Instant Meals wants to mail out:

$1.08*188= $203.04

According to this, the answer is that Instant Meals would spend $203.04 on postage to mail out one hundred eighty-eight samples.

8 0
3 years ago
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