Solve the linear equations of 2x - y = 4
1 - 3y = -3
Please I’m in the middle of a test help

Answer:

− 7 ⋅ a

Step-by-step explanation:

Nothing further can be done with this topic. Please check the expression entered or try another topic.

Answer:

a = -2

Step-by-step explanation:

-7 * -2 = 14

Answer:

r=1

Step-by-step explanation:

77 - 88 = -11

-11/-11 = 1

Answer:

7

Step-by-step explanation:

f(2) = 2^2 +3

=4+3

=7

Answer:

60.6 on delta math

Step-by-step explanation:

The rate of the flow will be 1.12 x 10⁻⁴ cubic meters per meter.

The rate of the flow of the fluid is defined as the volume of the fluid through a confined space or cross-section in a unit of time. The unit of the rate of flow is gallons per minute or cubic meter per minute.

Given that water flows through a pipe at a rate of 89 quarts per hour the value of the rate of flow in cubic meters per month will be calculated as below:-

1 quartz = ( 1 / 1056.688) cubic meters

1 quartz = ( 89 / 1056.688)

1 quartz = 0.08 cubic meters

1  quartz per hour = 0.08 / ( 24 x 30) cubic meters per month

1  quartz per hour =1.12 x 10⁻⁴ cubic meters per month

Therefore, the rate of the flow will be 1.12 x 10⁻⁴ cubic meters per meter.

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Answer:

x = 90

y = 60

Step-by-step explanation:

Let x = student

Let y = non-student

x + y = 150

4x + 8y = 840 <—— Use elimination/addition ethos for both equations

8 (x + y = 150)

-1 (4x + 8y = 840) <—— Let’s eliminate y

8x + 8y = 1200

+ -4x - 8y = -840

—————————————

4x = 360

x = 90

x + y = 150 <— substitute for x from above

90 + y = 150

- 90 = - 90 <— subtract from both sides

y = 60

Answer:

Amount of active ingredient is 0.04(8+x)= 0.32+0.4x

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

EQUATION:

active ingre. + active ingre. = active ingre

0.48 + 0 = 0.32 + 0.04x

0.16 = 0.04x

x=4ML (amount of water that must be added)

The amount of water that must be added is 4 ml to 8 mL of 6% saline solution to reduce the concentration to 4%.

It's the ratio of two integers stated as a fraction of a hundred parts. It is a metric for comparing two sets of data, and it is expressed as a percentage using the percent symbol.

It is given that:

8 mL of 6% saline solution to reduce the concentration to 4%.

Let x be the amount that should be added to 8 mL of 6% saline solution to reduce the concentration to 4%.

The amount of active ingredients is

0.04(8 + x) = 0.32 + 0.4x

Active ingredients + active ingredients  = active ingredients

0.48 + 0 = 0.32 + 0.04x

0.16 = 0.04x

x=4 ml; the amount of water that must be added

Thus, the amount of water that must be added is 4 ml to 8 mL of 6% saline solution to reduce the concentration to 4%.

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Answer:

base =5   because all angles=60, so an equilateral triangle

height=4.33

Step-by-step explanation:

height^2+1/2(5)^2=5^2

height^2+6.25=25

height^2=18.75

height=4.33

Answer:

Yes it is true. Sum of two integers is always an integer

Step-by-step explanation:

Rule: The sum of any integer and its opposite is equal to zero. Summary: Adding two positive integers always yields a positive sum; adding two negative integers always yields a negative sum. To find the sum of a positive and a negative integer, take the absolute value of each integer and then subtract these values.

Answer:

Change in percent = 30%

Step-by-step explanation:

Given:

First value = 30

Second value = 39

Find:

Change in percent

Computation:

Change in percent = [(Second value - First value) / First value]100

Change in percent = [(39 - 30) / 30]100

Change in percent = [(9) / 30]100

Change in percent = 30%

Answer:

No they aren't equivalent

Step-by-step explanation:

Let's take each expression

the first one is

- (12x+24) - 9x = -12x -24 -9x = -21x -24 = -3 (7x +8)

the second expression

-6 (x+1) = -6x-6

So they aren't equivalent

Answer:

-4

Step-by-step explanation:

3.4+2(9.7-4.8x)=61.2

2(9.7-4.8x)=61.2-3.4

2(9.7-4.8x)=57.8

9.7-4.8x=57.8/2

9.7-4.8x=28.9

4.8x=9.7-28.9

4.8x=-19.2

x=-19.2/4.8

x=-4

Answer:

Step-by-step explanation:

B. Distribute 2 to 9.7 and −4.8x.

C. Combine 3.4 and 19.4.

E. Subtract 22.8 from both sides.

F. Divide both sides by −9.6.

Answer: Option 2

Step-by-step explanation:

Answer:

2

Step-by-step explanation:

Because it is

Answer:

I think it's -500 = 135

Step-by-step explanation:

multiply 10 and -50 to get -500

Answer:

B: 0.1

Step-by-step explanation:

5 x [tex]10^{5}[/tex] = 500000, which is exactly 0.1 the size of Colorado. Just multiply Wyoming by 10 and you'll get exactly 5 million

Answer:

x=15

Step-by-step explanation:

Answer:

Step-by-step explanation:

f(x) = [tex]3^{x}[/tex]

g(x) = [tex]3^{x-1}[/tex]

Answer:

√-48=4i√3

Step-by-step explanation:

because negative number never has a real root so 1st and 2nd option r out . i^2= -1 so root and Square cuts out eachother so i should be out of the root hence option 4th is also cut out. so 3 rd is correct.

the answer is 12

because it is

Answer:

-n+3

Step-by-step explanation:

Subtract the 5n and 3

Answer:

15.4z-12

Step-by-step explanation:

Answer:

30

Step-by-step explanation:

? = 180 - 150 = 30

Answer:

30°

Step-by-step explanation:

The line is 180 degrees so all you have to do is subtract 150° from 180°

You should end up with 30°

Whenever you see a straight line (IT HAS TO BE STRAIGHT), it is equal to 180°.

Answer:

Step-by-step explanation:

a=1

b=-2

c=1.5

d=-20

A given set of data is said to have a greater spread if it covers a large scale/area. Since the data set 3 only covers a small portion of a wide spectrum it is said to have a smaller spread when in comparison with data set 4 which has a greater spread as it covers a larger scale/spectrum.

▪︎Therefore, Data set 4 has a greater spread.

Lower quartile of a data set is said to be the median of the lower half of the data set.

Lower quartile of this data set :

[tex] = \tt \frac{50 + 60}{2} [/tex]

[tex] =\tt \frac{110}{2} [/tex]

[tex]\color{plum} =\tt 55[/tex]

Thus, the lower quartile of this data set = 55

Median is said to be the middle element of a data set.

The median of this data set = 80

Upper quartile of a data set is said to be the median of the upper half of a given data set.

Upper quartile of this data set :

[tex] =\tt \frac{110 + 100}{2} [/tex]

[tex] =\tt \frac{210}{2} [/tex]

[tex]\color{plum} = \tt105[/tex]

Thus, the upper quartile of this data set = 105

▪︎Lower quartile of this data set = 55

▪︎Upper quartile of this data set = 105

▪︎Median of this data set = 80

Answer:

Kevin had 11 and 30 seconds.

kalfhvbweocnsliydsaieakywcronuosudzopvnrcidsvjrk hope this helps..?

Answer:am working on this to study guide

Step-by-step explanation:

Answer:

4

Step-by-step explanation:

You can determine the y-intercept by looking at the graph and see where the line intersects the y-axis at. Therefore, the y-intercept is 4

Answer:

I think maybe 3

Answer:

check book

Step-by-step explanation:

ok apply formula only