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seraphim [82]
3 years ago
11

What is the y-coordinate of the solution​

Mathematics
2 answers:
Leto [7]3 years ago
7 0

Answer:

y=2

Step-by-step explanation:

y = 2x-1

y = -2x+5

Add the two equations together to eliminate x

y = 2x-1

y = -2x+5

------------------

2y = 4

Divide by 2

2y/2 = 4/2

y =2

EastWind [94]3 years ago
6 0

Answer:

(0, 2) is the y-coordinate.

Step-by-step explanation:

1. 2x-1=-2x+5

2. 2x=-2x+6

3. 4x=6

4. x=1.5

plug in the 1.5 in each equation and you get 2 for the y-coordinate.

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Mrs. Conrys class Amaryllis grew 2/9 of an inch in 1/6 of a day. How many inches will it grow in one day?
VladimirAG [237]

Answer:

1/18

Step-by-step explanation:

6 0
3 years ago
A random sample of the amounts for 22 purchases was taken. The mean was ​$42.97​, the standard deviation was ​$22.82​, and the m
Illusion [34]

Answer: a) 84 and b ) 2084

Step-by-step explanation:

Given : Sample standard deviation : s= $22.82

(Population standard deviation is unknown ) , so we use t-test.

Critical value or the​ 95% confidence intervals :t_{n-1}*=2.0

Formula to find the sample size :

n=(\dfrac{t^*\cdot s}{E})^2

a) E = 5

n=(\dfrac{(2)\cdot 22.82}{5})^2

n=(9.128)^2=83.320384\approx84

i.e. Required sample size : n= 84

b)  E = 1

n=(\dfrac{(2)\cdot 22.82}{1})^2

n=(45.64)^2=2083.0096\approx2084

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8 0
3 years ago
Consider the equation 2(ax+3)=4x−3(4x+8). For what value of a is there no solution to the equation?
erastovalidia [21]

Answer:

the value of a such that  there is no solution to the equation is a = -4.

Step-by-step explanation:

Let first simplify the expression presented on statement. The equation has no solution if and only if a is eliminated in the process and an absurd is the result (i.e. 0 = 7).

2\cdot (a\cdot x + 3) = 4\cdot x -3\cdot (4\cdot x + 8)

2\cdot a\cdot x +6 = 4\cdot x -12\cdot x -24

2\cdot a \cdot x+6=-8\cdot x-24

2\cdot a\cdot x +8\cdot x = -30

2\cdot (a+4)\cdot x = -30

(a+4)\cdot x = -15

To obtain an absurd, we need that a+4 = 0. Hence, the value of a such that  there is no solution to the equation is:

a = -4

Let prove the certainty of the result. We find that an absurd exist: (a = -4)

0 = -15

5 0
3 years ago
–4x-2y=-2<br> x-2y=9<br> what do you get if you subtract the second from the first
kirill115 [55]

Answer:

-4×-2y=2

-4×+8y=-8

6y=6

y=1 then you the value of y and to put in any one equestion

7 0
2 years ago
a nature clubs has 37 member.each member receives 15 fish to put aquarium . if 20 of total number of fish or put into a fish bow
PilotLPTM [1.2K]

Answer:

74

Just do 20x37=74

5 0
3 years ago
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