Use elimination to solve and match each system of equations to the correct solution. 3x+y=11 5x-y=21 Help with this one I’ll give u brainliest

Answer:

-15

Step-by-step explanation:

[tex]2(4m-5)-(6m+11)=33[/tex]

[tex]8m-5-12m-22=33[/tex]

[tex]-4m-27=33[/tex]

[tex]-4m=60[/tex]        

[tex]m=-15[/tex]

Hope this helps, have a great day:)

Answer:

16

Step-by-step explanation:

48/3=16

16/2=8

8+8=16

Answer:

0.49 = [tex]\frac{49}{100}[/tex]

4.542 = 4 [tex]\frac{542}{1,000}[/tex]

Step-by-step explanation:

0.49 is equivalent to 49/100 because 0.49 represents the hundredth place.

4.542 is equivalent to 4 542/1,000 because .542 is representing the thousandths place, and the 4 is a whole number.

Hope this helps!

Answer:

-225 feet

Step-by-step explanation:

The submarine started at -40 feet and wend down 185 feet which means the submarine is now at -225 feet.

Work:

-40 + (-185)

-40-185

-225

Final Answer: -225 feet

Answer:

x = 8

Step-by-step explanation:

Solve for x:

6 x + 9 = 4 x + 25

Subtract 4 x from both sides:

(6 x - 4 x) + 9 = (4 x - 4 x) + 25

6 x - 4 x = 2 x:

2 x + 9 = (4 x - 4 x) + 25

4 x - 4 x = 0:

2 x + 9 = 25

Subtract 9 from both sides:

2 x + (9 - 9) = 25 - 9

9 - 9 = 0:

2 x = 25 - 9

25 - 9 = 16:

2 x = 16

Divide both sides of 2 x = 16 by 2:

(2 x)/2 = 16/2

2/2 = 1:

x = 16/2

The gcd of 16 and 2 is 2, so 16/2 = (2×8)/(2×1) = 2/2×8 = 8:

Answer: x = 8

Answer:

6xsinx + 3x²cosx

Step-by-step explanation:

Differentiate using the product rule

Given y = f(x)(g(x) , then

[tex]\frac{dy}{dx}[/tex] = f(x)g'(x) + g(x)f'(x)

Here f(x) = sinx ⇒ f'(x) = cosx

g(x) = 3x² ⇒ g'(x) = 6x

Thus

[tex]\frac{dy}{dx}[/tex] = 6xsinx + 3x²cosx

Answer:

w=13

Step-by-step explanation:

Answer:

w =13

Step-by-step explanation:

[tex]15+w=3w-11[/tex]

Collect like terms

[tex]15+11 =3w-w\\[/tex]

Simplify

[tex]26 = 2w[/tex]

Divide both sides of the equation by 2

[tex]\frac{26}{2} = \frac{2w}{2}[/tex]

Simplify

[tex]13 = w[/tex]

Switch sides

[tex]w =13[/tex]

Answer:4

Step-by-step explanation:

Answer:

10 Hours

Step-by-step explanation:

1300mi divided by 2

= 650 Miles/65mph

= 10 Hours

The statement that does not represent the same value as the others is 'the opposite of 9'

"It is the actual distance of the number from zero."

For given question,

We need to find the statement which does not represent the same value as the others.

We find the value for each statement.

a) the distance between 0 and 9

The distance between 0 and 9 is 9.

b) the absolute value of negative 9

We know, |-9| = 9

So, the absolute value of -9 is 9

c) the opposite of 9

The opposite of 9 is -9.

d) the absolute value of 9

|9| = 9

So, the absolute value of 9 is 9.

Therefore, the statement that does not represent the same value as the others is 'the opposite of 9'

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Answer:

$0.15

Step-by-step explanation:

3÷20=$0.15

I hope this helps

The cost per message is $0.15

A unit rate means a rate for one of something. We write this as a ratio with a denominator of one. For example, if you ran 70 yards in 10 seconds, you ran on average 7 yards in 1 second. Both of the ratios, 70 yards in 10 seconds and 7 yards in 1 second, are rates, but the 7 yards in 1 second is a unit rate.

Given that, a graph,

The graph is showing a straight line,

Considering a coordinate (3, 20),

That means, they cost $20 for 3 messages.

Therefore, for 1 message = 3/20 = 0.15

Hence, the cost per message is $0.15

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Answer:

A.

Step-by-step explanation:

Small pizza would have 12 toppings. Becuase $9.00 divided by 0.75 is 12. Meaning there would be 12 toppings on a small pizza.-E.A.

Answer:

44 in

Step-by-step explanation:

Answer:1. 0.35. 0.35

Step-by-step explanation:

I did the question on edgenuity

The change for each consecutive time given is: 1

The change of each consecutive height given is: 0.35

The rate of change for the relationship between time and height is: 0.35

The table that displays the height of water when a pool is being filled against time is shown in the image attached. (See attachment).

Recall:

Rate of change can be calculated as: change in output / change in input

Change in output = difference between consecutive outputs

Change in input = difference between consecutive inputs

In the question given,

Time is input

Height is output

Thus:

Change for each consecutive input (time):

Therefore, the change of each consecutive input (time) is: 1

Change for each consecutive output (height):

Therefore, the change of each consecutive output(height) is: 0.35

Rate of change of the relationship between time and height:

Rate of change = change in height / change in time

Rate of change = 0.35/1 = 0.35

In summary:

The change for each consecutive time given is: 1

The change of each consecutive height given is: 0.35

The rate of change for the relationship between time and height is: 0.35

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Answer:

k = -3

Step-by-step explanation:

-7(2 + k) = 7

Divide both sides by (-7)

2 + k = 7/-7

2 + k = -1

Subtract 2 form both sides

   k = -1 - 2

k = -3

Answer:

k = -3

Step-by-step explanation:

[tex]-7(2+k)=7\\\\-14-7k=7\\\\-14+14-7k=7+14\\\\-7k=21\\\\\frac{-7k=21}{7}\\\\\boxed{k=-3}[/tex]

Hope this helps.

Answer:

149  minutes

Step-by-step explanation

Answer:

625%

Step-by-step explanation:

Answer:

No (unless it happens to have a vinculum on top of any digit image attached is an example of a vinculum)

Step-by-step explanation:

0.63 just stops at 0.63

Answer:

[tex]2.4\text{ feet}[/tex]

Step-by-step explanation:

A rectangle's perimeter is given by the formula:

[tex]P=2(l+w)[/tex]

A rectangle's area is given by the formula:

[tex]A=lw[/tex]

We are given that they have the same numerical value. In other words:

[tex]2(l+w)=lw[/tex]

And we are also given that the length is 12 feet. So, substitute 12 for l:

[tex]2(12+w)=12w[/tex]

To solve for the width, we just need to solve for w.

On the left, distribute:

[tex]24+2w=12w[/tex]

Subtract 2w from both sides. The left side cancels:

[tex]24=10w[/tex]

Divide both sides by 10. Flip also:

[tex]w=\frac{24}{10}[/tex]

Reduce both layers. Use 2. So:

[tex]w=12/5=2.4[/tex]

So, the width is 2.4 feet.

And we're done!

Answer:

2.4

Step-by-step explanation:

Answer:

wouldnt it be like 4 times 7 =  28? or something like that???

Answer:

4 times 7 equals 28

Step-by-step explanation:

Plz choose mine as brainliest

The equation to find the proportion painted is: [tex]\mathbf{c = \frac{7}{8}x}[/tex]

Let the size of the art be x.

In the morning, she paints 3/4 of x.

So, we have:

[tex]\mathbf{Morning = \frac 34 x}[/tex]

In the evening, she paints 1/8 of x.

So, we have:

[tex]\mathbf{Evening = \frac 18 x}[/tex]

So, the amount of project painted is:

[tex]\mathbf{c = Morning + Evening}[/tex]

This gives

[tex]\mathbf{c = \frac 34x + \frac 18x}[/tex]

Take LCM

[tex]\mathbf{c = \frac{6x + x}8}[/tex]

Add the numerator

[tex]\mathbf{c = \frac{7x}8}[/tex]

So, we have:

[tex]\mathbf{c = \frac{7}{8}x}[/tex]

Hence, the equation to find the proportion painted is: [tex]\mathbf{c = \frac{7}{8}x}[/tex]

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Answer:

A 0.6

Step-by-step explanation:

Answer:

120 people

Step-by-step explanation:

The number of people as well as the number of chairs is 5

so that means there are exactly 120 ways in which they can be seated.

Answer:

Step-by-step explanation:

just plug in c

6-20 = 4 - 3(6)

Answer:

Step-by-step explanation:

y = 4x + 18

Answer:

to make chocolate milk, the lunch lady uses 4 cups of white milk for each cup of chocolate milk

to make chocolate milk, the lunch lady uses 4 cups of white milk for each cup of chocolate milk

to make chocolate milk, the lunch lady uses 4 cups of white milk for each cup of chocolate milk

to make chocolate milk, the lunch lady uses 4 cups of white milk for each cup of chocolate milk

to make chocolate milk, the lunch lady uses 4 cups of white milk for each cup of chocolate milk

to make chocolate milk, the lunch lady uses 4 cups of white milk for each cup of chocolate milk

to make chocolate milk, the lunch lady uses 4 cups of white milk for each cup of chocolate milk

Step-by-step explanation:

Answer:

AB=

[tex] \sqrt{260} [/tex]

Step-by-step explanation:

plz mark as brainliest if it helps