Solve the system of equations using substitution.
Solution: _______?

Y=8x-2
3x+y=42

Answer:

if 4:5:3=84 you start by adding (4+5+3=9)....so 9 equals to 84 what about (4) cross multiply....you will 4=28 .....if 9 =84 what about 5 cross multiply.....you will get 35....if 9 =84 what about 3

cross multiply.....you will get 21 so the numbers are.

4=38

5=35

3=21

Answer:

24 Minutes

Find 60 percent of 40.

Percent means over 100

,so 60% = 60/100 or 0.6

Multiply that by 40 to find 60% of it:

40 * 0.6 = 24

A Samantha spent percent 24 minutes on language arts out of the 40 minutes dedicated to her homework.

To find the number of minutes Samantha spent on language arts,  to calculate 60% of the total time  spent on homework.

Samantha spent a total of 40 minutes on homework.

To find 60% of 40 minutes, multiply 40 by 0.60 (since 60% is equivalent to 0.60):

60% of 40 = 0.60 × 40 = 24 minutes

Therefore, Samantha spent 24 minutes on language arts.

Regarding the 2-column table provided, it appears to be unrelated to the problem and does not directly provide information about Samantha's homework time. It contains entries for "Time Spent" in percentages and corresponding minutes, but these percentages and minutes do not seem to relate to the given problem.

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Step-by-step explanation:

x = number of t- shirts

the function for the incurring costs is

c = 5x + 45

the function for the accumulating sale is

s = 20x

the break even point is when both functions deliver the same result.

20x = 5x + 45

15x = 45

x = 3

c = s = 5×3 + 45 = 20×3 = $60

they need to sell 3 t-shirts to break even.

at that point they will have incurred $60 in costs and collected the same amount in sales.

Answer:

Volume: 16.76 cm^3

Surface area: 40.67 cm^2

Step-by-step explanation:

To find volume, you use the formula V=πr^2*h/3

To find the surface area you use formula A=πr(r+√h^2+r^2)

Answer:

V = 16.76

Surface Area = 40.67

Step-by-step explanation:

V=πr2h

A=πrl+πr2

By knowing how to use positive numbers and negative numbers, we will see that the answers are:

By standard notation, if May wins money, then we represent this with a positive number.

While if she pays or has a debt, we represent the change with a negative number (because now she has less money than before).

A) She receives $25, so the change is:

C = $25

B) She earns $14, so the change is:

C = $14

C) She spends $10, so now she has $10 less than before, the change is:

C = -$10

D) She donated $3, so the change is:

C = -$3

E) She gots $2, then the change is:

C = $2.

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Answer:

Can't answer with out the picture

Step-by-step explanation:

[tex]7 > -2\\7 -7 > -2-7\\0 > -9[/tex]

Hope that helped!

First, combine like terms:

4x -58 +x =2 can be rewritten as 5x - 58 =2

Next, isolate the x on one side of the equation by adding 58 to both sides:

5x = 60

Now, isolate x again by dividing by 5 on both sides of the equation:

Answer: x = 12

Answer:

x + 8 = 20

Step-by-step explanation:

Using the keywords;

'more than' (addition)

'a number' which we can consider a variable

and 'equals'

Answer: 8 + x =20

Step-by-step explanation: eight more than a number means 8 more than meaning plus, a number. So this is saying that 8 more than what ever that number is, will equal 20. We say x in the equation because x can be see as “the number”.

x = “the number” = 12

This is because 8 more than 12 is 20...

So 8 more than a number = 8 + x = 20

Answer:

92

Step-by-step explanation:

Answer:

52.5

Step-by-step explanation:

Question :-

Answer :-

[tex] \rule {180pt} {2pt} [/tex]

Given :-

To Find :-

Solution :-

As per the provided information in the given question, we have been given that After 20 years, Rama will be 5 times as old as he is now. And, we have been aksed to calculate Present Age of Rama.

Let :-

Therefore :-

[tex] \longmapsto \: \: \:\sf{x \: + \: 24 \: = \: 5x} \\ [/tex]

[tex] \longmapsto \: \: \sf{24 \: = \: 5x \: - \: x} \\ [/tex]

[tex] \longmapsto \: \: \sf{24 \: = \: 4x} \\ [/tex]

[tex] \longmapsto \: \: \sf{x \: = \: \dfrac{24}{4} } \\ [/tex]

[tex] \longmapsto \: \: \textbf{ \textsf{x \: = \: 6 }} [/tex]

Hence :-

[tex] \underline {\rule {180pt} {4pt}} [/tex]

Given :

⠀

To Find :

⠀

Solution :

Now,

⠀

According to the Question :

[tex]{ \longrightarrow {\qquad {\sf 5x = x + 24 }}}[/tex]

⠀

Subracting x from both sides we get :

[tex]{ \longrightarrow {\qquad {\sf 5x - x= x - x+ 24 }}}[/tex]

[tex]{ \longrightarrow {\qquad {\sf 4x= \cancel{x} \: \: \cancel{- x}+ 24 }}}[/tex]

[tex]{ \longrightarrow {\qquad {\sf 4x= 24 }}}[/tex]

⠀

Dividing both sides by 4 we get :

[tex]{ \longrightarrow {\qquad {\sf \dfrac{4x}{4} = \dfrac{24}{4} }}}[/tex]

[tex]{ \longrightarrow {\qquad \pmb {\bf x= 6 }}}[/tex]

⠀

Therefore,

Answer:

43

Step-by-step explanation:

The value that is equal to the average rate of change of the function over the interval is equal is 1 m/s

Given the position of the object expressed as:

y = -t^2 + 3t - 4

In order to calculate the value that is equal to the average rate of change of the function over the interval (0, -4) and (2, -2), we will determine the slope of these two coordinates as shown;

Rate of change = -2-(-4)/2-0
Rate of change = -2+4/2
Rate of change = 2/2

Rate of change = 1 m/s

Hence the value that is equal to the average rate of change of the function over the interval is equal is 1 m/s

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Which data best supports the scientist’s decision to issue the warning?

D) Reservoirs and lake levels continue to drop significantly.

Answer:

slay

Step-by-step explanation:

Answer:

(x) = 4

Step-by-step explanation:

 3/4 (x) + 4 = 7

 3/4 (4) + 4 = 7

0.75 (4) + 4 = 7

          3 + 4 = 7

                7 = 7

Slope:-

[tex]\\ \rm\rightarrowtail m=\dfrac{5-2}{2-1}[/tex]

[tex]\\ \rm\rightarrowtail m=\dfrac{3}{1}[/tex]

[tex]\\ \rm\rightarrowtail m=3[/tex]

Answer:

D

Step-by-step explanation:

As stated elsewhere, two conditions must be met.

Answers A B and C all meet these 2 conditions. It is only D that gives you the problem.

It adds to 181 which is not 180. 180 is written in stone, A triangle cannot have 179 degrees, nor can it have 181 degrees.

It must have 180.

D has 181 degrees. It cannot be a triangle.

Answer:

X=10

Step-by-step explanation:

Step 1: Subtract 100 from both sides of the equation.

Step 2: Simplify.

Step 3: Subtract 25x from both sides of the equation.

Step 4: Simplify.

Step 5: Divide both sides of the equation by the same term.

Step 6: Simplify.

X=10 :)

Answer:

Step-by-step explanation:

In this question we are given an equation that is 22x + 100 = 25x + 70. And we are asked to find the value of x .

Solution : -

[tex] \longmapsto \:22x + 100 = 25x + 70 [/tex]

Step 1 : Subtracting 100 from both sides :

[tex] \longmapsto \:22x + \cancel{100} - \cancel{100} = 25x + 70 - 100[/tex]

On further calculations we get :

[tex] \longmapsto \: 22x = 25x - 30[/tex]

Step 2 : Subtracting 25x from both sides :

[tex] \longmapsto \:22x - 25x = \cancel{ 25x} - \cancel{25x }- 30[/tex]

On further calculations we get :

[tex] \longmapsto \: \cancel{- }3x = \cancel{ - }30[/tex]

Step 3 : Dividing with 3 on both sides :

[tex] \longmapsto \: \frac{ \cancel{3}x}{ \cancel{3}} = \cancel{\frac{30}{3} }[/tex]

On further calculations we get :

[tex] \longmapsto \: \purple{\boxed{ \frak{x = 10}}}[/tex]

Verifying : -

We're verifying our answer by substituting value of x in given equation . So ,

Therefore, our value for x is correct .

Answer:

it is IH - 110 ft

Step-by-step explanation:

The plane height is down 110 feet from its initial height.

Subtraction is mathematic operation. Which is used to remove terms or objects in expression.

Let x be the initial height of the plane.

Then according to question;

if drop down means height in negative term and rise up means height in the positive term.

Then,

the height is

= x -300-180+240+130

= x-110

Therefore, down 110 feet is the height of the plane now relative to its initial height.

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Answer:

its true

Step-by-step explanation:

[tex]\frac{2}{5} * \frac{10}{1}=\frac{20}{5}[/tex]
[tex]\frac{20}{5} = \frac{4}{1} = 4[/tex]

have a good day.

Answer:

True.

Step-by-step explanation:

Note the equal sign, what you do to one side, you do to the other. Multiply the reciprocal of the fraction to both sides to isolate the variable, v.

The reciprocal in math is described as the quantity that is multiplied that will result in 1. In this case, you will multiply 5/2 to both sides of the equation:

[tex]\frac{2}{5}v = 4\\ \\(\frac{5}{2})\frac{2}{5}v = 4 * (\frac{5}{2})\\[/tex]

[tex]v = \frac{4 * 5}{2} = \frac{20}{2} = 10\\ v = 10[/tex] (True).

In this case, v = 10 will work to solve the given equation, and so it is true.

~

Answer:

Step-by-step explanation:

PART A

Answer: no they will not be the same

PART B

Which cab driver's charge will be less for a ride that is 10 miles in distance?

Madeline's is cheaper

Bert's cab company costs $31 and Madeline's cab company costs $23

Answer:

x=5;y=12

Step-by-step explanation:

Hope this answer helps you

Answer:

1st option

Step-by-step explanation:

the figure is a kite

the horizontal diagonal bisects the vertical diagonal , then

x = 5

The diagonals are perpendicular , so using Pythagoras' identity

x² + y² = 13²

5² + y² = 13²

25 + y² = 169 ( subtract 25 from both sides )

y² = 144 ( take square root of both sides )

y = [tex]\sqrt{144}[/tex] = 12

Answer: A B E F

Step-by-step explanation:

i’m pretty sure it’s right

The probability is the ratio of the favorable event to the total number of events. Then the P(B|C) is 0.38. Then the correct option is B.

Probability means possibility. It deals with the occurrence of a random event. The value of probability can only be from 0 to 1. Its basic meaning is something is likely to happen.

According to the condition, the table will be

                      C                   D               Total

  A                 15                  21                 36

  B                  9                  25                34

Total              24                 46                70

The probability of the (BIC) will be

[tex]\rm P(B|C) = \dfrac{9}{24}\\\\\\P(B|C) = 0.375 \approx 0.38[/tex]

The P(B|C) is 0.38. Then the correct option is B.

More about the probability link is given below.

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Answer: 114 degrees

Step-by-step explanation:

Answer:

Step-by-step explanation:

Answer:

Exact: 9.42

Approx: 9

Step-by-step explanation:

The area of a circle is pi*radius^2 (pi=3.14 r=radius ^2= power of 2/squared)

The diameter is two times the radius. So, we need to divide the diameter by two for the first step of solving this.

6/2=3

Now, we know the radius is 3.

Let's square it:

3^2= 3*3

3*3=9

Now, the last step is to multiply it by pi (3.14)
3.14*3=9.42

There we go! The area is 9.42 feet!

Answer:

[tex]thats \: the \: answer \: pls \: brainliest[/tex]

Step-by-step explanation:

happy to help u

pls mark me as brainlist

Answer:

An example would be: Do you like cats or dogs more?

Step-by-step explanation:

The example for the biased survey question is : How awesome is the product?

A survey question is biased if it is phrased or formatted in a way that skews people towards a certain answer.

The question : - How awesome is the product?

The Fixed: How would you rate this product?

The examples of biased survey questions listed above contains a judgment, implying that the product is “awesome,” The corrected phrasing, on the other hand, is more objective, and contains no insinuations.

Hence, the example for the biased survey question is : How awesome is the product?

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