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borishaifa [10]
3 years ago
12

Help me please thx so much have a good one

Mathematics
1 answer:
Mademuasel [1]3 years ago
8 0

Answer: y=1/2x-17

Step-by-step explanation:

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2x+5y=-3<br>3x-y=21<br>help me
arlik [135]
Problem:
Solve
2
x
+
5
y
=
−
3
;
3
x
−
y
=
21
Steps:
I will try to solve your system of equations.
3
x
−
y
=
21
;
2
x
+
5
y
=
−
3
Step: Solve
3
x
−
y
=
21
for y:
3
x
−
y
+
−
3
x
=
21
+
−
3
x
(Add -3x to both sides)
−
y
=
−
3
x
+
21
−
y
−
1
=
−
3
x
+
21
−
1
(Divide both sides by -1)
y
=
3
x
−
21
Step: Substitute
3
x
−
21
for
y
in
2
x
+
5
y
=
−
3
:
2
x
+
5
y
=
−
3
2
x
+
5
(
3
x
−
21
)
=
−
3
17
x
−
105
=
−
3
(Simplify both sides of the equation)
17
x
−
105
+
105
=
−
3
+
105
(Add 105 to both sides)
17
x
=
102
17
x
17
=
102
17
(Divide both sides by 17)
x
=
6
Step: Substitute
6
for
x
in
y
=
3
x
−
21
:
y
=
3
x
−
21
y
=
(
3
)
(
6
)
−
21
y
=
−
3
(Simplify both sides of the equation)
Answer:
y
=
−
3
and
x
=
6

7 0
3 years ago
What is the mean and median of 4,9,26,20,23,0,37??
yan [13]

Answer: Hello, The mean is is 17 and the median is 20

Step-by-step explanation: The mean is a type of average. It is the sum (total) of all the values in a set of data, such as numbers or measurements, divided by the number of values on the list. To find the mean, add up all the values in the set. ... That is the mean. The median is the middle number in a sorted, ascending or descending, list of numbers and can be more descriptive of that data set than the average. The median is sometimes used as opposed to the mean when there are outliers in the sequence that might skew the average of the values.

7 0
3 years ago
Read 2 more answers
Find the rate of commission to the nearest whole percent if the sale was $5,000 and
tatiyna

Answer:

the answer would be 16%, but if its rounded to nearest whole percent it would be 20

Step-by-step explanation:

6 0
3 years ago
George and Cameron went on a bicycle trip.They took a bus to the starting point, and then biked the rest. They traveled 275 km i
EastWind [94]

In this type of problem, we would want to use a system of linear equations.

First, we need to find our equations. We know that the two boys traveled 275 km in total, and since x and y count the distance traveled (just in different modes of travel), we can write: x + y = 275.

Next, the problem says that they biked 55 km more than they bussed. So, x = y + 55.

Now that we have two equations to solve for two variables, we can lay them out next to each other:

x + y = 275

x = y + 55

We see that we can substitute x in the first equation with y + 55. This gives us

(y + 55) + y = 275

We solve for y and get y = 110 km by bus. But, we want to know how far they traveled by bike. So, since x = y + 55 and y = 110, we can solve for x by doing 110 + 55 = 165 km by bike.

The answer is 165 kilometers.

4 0
3 years ago
An equilateral triangle has 3 sides of equal length. Function P gives the perimeter of an equilateral triangle of side length s.
Gemiola [76]

Answer:

a. 6

b. 30

c. 3s

Step-by-step explanation:

Still confuissed asked a friend and he told me the awnser, i reccomend googling if you dont understand

6 0
3 years ago
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