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Elena L [17]
3 years ago
7

15x=-32-14y 9x=-64+14y

Mathematics
1 answer:
adell [148]3 years ago
5 0
1) (15x=-32-14y)-1<span>
2) 9x=-64+14y
</span>
1) -15x=32+14y
-
2) 9x=-64+14y

3) -24x=96
3) x=-4

Substitute x into 1) equation

1)<span> 15*-4=-32-14y
</span>1) -60+32=-14y
1) -28=-14y
1) y=2

Answer:

x=-4
y=2
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you deposit $50 in your savings account. One week later, you withdraw $20. Write each amount as an integer
algol13
When you deposit $50 into your account, you add it to the amount already in your account. (Some people oversee this error and assume the account has a balance of 0.)

So you add 50 to x, our variable, and then subtract 20 from it because we withdrew $20.

So the amount remaining is x+30.

However, the question asks for every amount to be written as an integer. Let's say that 50 is a, 20 is b, and the original amount is x.
The equation would be x+a-b.
5 0
3 years ago
WILL GIVE BRAINLIEST: If the graph of 2x+3y − 6=0 is perpendicular to the graph of ax − 3y=5. What is the value of a?
Ilya [14]

Answer:

a = \frac{9}{2}

Step-by-step explanation:

To find the value of a, find the Slope of both the equations.

For lines to be perpendicular to each other    m_{1}m_{2}  = - 1

For line 1:

2x + 3y − 6 = 0 represent the line in y=mx +c form

3y = -2x + 6

y = \frac{-2}{3} x + \frac{6}{3}

y = \frac{-2}{3} x + 2

m_{1} = \frac{-2}{3}

For line 2:

ax - 3y = 5

ax = 5 + 3y

ax - 5 = 3y

y = \frac{ax}{3} - \frac{5}{3}

m_{2} = \frac{a}{3}

Apply the condition of perpendicularity:

\frac{-2}{3} * \frac{a}{3} = - 1

\frac{2a}{9} = 1

a = \frac{9}{2}

7 0
3 years ago
-3 - 3х2 – 4x factor
Vlad1618 [11]

Answer:

-1 out of -3-X2-4x

Step-by-step explanation:

8 0
3 years ago
A planned community has 150 homes, each with an automatic garage door opener. The door opener has seven switches that a homeowne
alexdok [17]

Answer:

The probability that at least two homeowners will set their switches to the same code is 100%.

Step-by-step explanation:

Consider the provided information.

The total number of code can be set with 0 or 1 is:

2×2×2×2×2×2×2=128

There are 128 different codes.  

The probability that code is unique is 1/128

Now, the probability that all codes are unique is:

[\frac{1}{128}]^{150}

Hence, the probability that all the codes are not unique is:

1-[\frac{1}{128}]^{150} \approx 1

Because the value of [\frac{1}{128}]^{150} is very small

As they can set 128 different codes and there are 150 homes. So, at least two homeowners will set their switches to the same code is 100%.

Hence, the probability that at least two homeowners will set their switches to the same code is 100%.

5 0
3 years ago
McKenzie bought 4 blow pops for $2.00 from the concession stand. How much would she have to pay for 13 blow pops at this rate?
Verdich [7]

Answer:

$6.50

Step-by-step explanation:

If she bought 4 blow pops for $2.00, each blow pop is $0.50.

You then multiply the cost for each blow pop ($0.50) by the number of blow pops she will buy (13).

4 0
3 years ago
Read 2 more answers
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