I need help -x + 5y = 14, x + 3y = 18 solve by substitution

Answer:

4. 42yds squared 5. 95 m squared 6. 152.5 m squared 7. 252cm squared 8. 310’ squared 9. 23cm squared 

Step-by-step explanation:

Answer:

451.61

Step-by-step explanation:

1) Set a linear equaion

[tex] \frac{98}{x} = \frac{21.70}{100} [/tex]

2) Cross multiply

[tex]21.70x = 98 \times 100[/tex]

3) Multiple the right side

[tex]21.70x = 9800[/tex]

4) Divide both side by 21.70

[tex] \frac{21.70x}{21.70} = \frac{9800}{21.70} [/tex]

5) Solve the linear equation

[tex]x = 451.6129032[/tex]

[tex]x≈451.61[/tex]

Then 21.70% of 451.61 is 98

After the first pour the water remains 1/2, after the second 1/3, after the third is 1/4, and after 9 pour the water remains 1/10.

Fraction number consists of two parts, one is the top of the fraction number which is called the numerator and the second is the bottom of the fraction number which is called the denominator.

After the first pour container has = 1/2

After the second pour = 1/3

Third pour = 1/4

After n pour = 1/(n+1)

n = 9

= 1/10

Thus, after the first pour the water remains 1/2, after the second 1/3, after the third is 1/4, and after 9 pour the water remains 1/10.

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Answer:

if the first term is 13, the second will be 13+x, the third 13+2x and so on, the tenth term will be 13+9x=40 9x = 27 x = 3 so the difference between the terms is 3 the sum of the first 10 terms is 13*10 + (x+2x+…+9x) = 130 + 45x = 130 + 45*3 = 130 + 135 = 265

Step-by-step explanation:

hope this helps you!

Answer:

131.88in

Step-by-step explanation:

C = 2πr

The radius of the circle is from center to the perimeter.

In this case the radius is 21in.

3.14 for pi

C = 2(21)(3.14)

C = 42(3.14)

C = 131.88in

Answer:

the answer for this question should be 131.88 because 21 is the radius and the radius is half of the diameter which is 42 because you need to multiply 21 times 2 getting an answer for the diameter but we use the formulas.

C=2 times 3.14 times 21= 131.88

C= 3.14 times 42=131.88

Step-by-step explanation:

Answer:

The answer is B. 4_2/3

Step-by-step explanation:

21/2  /  9/4 =21/2 * 4/9 =42/9 =4 6/9 =4 2/3

Answer: B) 4 2/3

Step-by-step explanation:

10 1/2= 21/2

2 1/4= 9/4

21/2 divided by 9/4=

21/2 x 4/9= 84/18=

4 2/3

Answer:

12

Step-by-step explanation:

−(−3)+(−3)^2

=12

Good luck! Hope this helps!

Answer:

the answer for this question should be 6 because remember we need to substitue n by -3 so first we need to solve the exponent one so we replace it.

-3^2= 9

-3 times -3= 9 and remember this rule when we multiply an negative times a negative is positive so it would be 9 for n^2 so we need to add 9+-3 and we get an answer of 6 so 6 is the correct answer and remember if the base is an negative and the exponent is even the answer is positive but if it is odd it would be negative.

hopefully 6 is the correct and have a great day.

Step-by-step explanation:

Answer:

d

Step-by-step explanation:

d has similar ones from the middle to the right and the left

Answer:

Angle x= 76

Step-by-step explanation:

angle DIJ = 180-107

                =73

angle x =angle DJI =180-31-73

                               =76

both angles x and DJI are equal because they both intersect with each other.

Answer:

9 days

Step-by-step explanation:

1 day: 5/6        2 days:  10/6       3 days:   15/6        4 days:  20/6   5  days: 25/6

6 days:  30/6        7 days:  35/6         8 days:  40/6       9 days: 45/6

If you divide 45 and 6 by 3 you get 15/2.  If you put 15/2 into a mixed number you would get 7 1/2.  So 9 days would be your answer.

Answer:

7 1/2 bottles will last 9 days

Step-by-step explanation:

To answer this, divide '7 1/2 bottles' by '5/6 bottle per day:"

 7 1/2 bottles

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

 5/6 bottle/day

The unit "bottle"/"bottles" cancel, and so we are left with

 7 1/2 day

-------------------  and this is equivalent to   15 days/2  divided by 5/6 OR

    5/6

 15 days/2 times 6/5:

15(6)

--------- days = 18/2 days = 9 days (answer)

2(5)

7 1/2 bottles will last 9 days.

Answer:

is there any question?

so I can answer

Answer:

See below

Step-by-step explanation:

7)  a rectangle   12 x 8 = 96

     plus semi-circle   1/2  pi r^2 = 1/2 pi 4^2 = 25.132

          total = 121.132 m^2

8)  Circle area = pi r^2

       large circle   pi * 2^2  = 4pi

            MINUS the smaller one   pi 1.5^2 = 2.25 pi

                    total = 1.75 pi = 5.498 in^2

9) Square area = 10 x 10 = 100

      minus circle  pi r^2 = 25pi      total = 21.46  ft^2

Answer:

22.

Step 1: Find area of inner square = 4 ft × 12 ft = 48ft2

Step 2: Find area of outer shape =

25 ft +11 ft = 36 cm2

Step 3: Area of shaded region = area of outer shape – area of inner square

= 36 ft2 – 48 ft2

= 12 ft2

Answer:

Graph 3

Step-by-step explanation:

equation: y = mx + b → y = 1/3x - 4

- m is the slope (slope = rise / run):

- b is the y intercept (when x = 0): -4

Graph 1 is incorrect because the y-intercept is 1.5 on this graph when the equation is -4

Graph 2 is incorrect because the slope is 3 / 1, the rise is 3 and the run is 1

the correct equation for this graph is y = 3x - 4

Graph 3 is correct because the slope is 1/3, the rise is 1 and the run is 3

and the y intercept is -4

Graph 4 is incorrect because the y-intercept is not even shown

Answer:

110 yards.

Step-by-step explanation:

30 + 40 + 40= 110 yards.

Answer:

3/5+1/10=7/10

Step-by-step explanation:

Multiplying both sides of 3/5, we get a common denominator (6/10)

The adding the two together, we get 7/10.

Good luck! Hope this helps!

Answer:

LCD = 5  

3/5 *2 because the denominators must be equal so 6/10 + 1/10

Then the full answer is 7/10

Hope this helps!

Answer:

C. 0.75

or 75%

Step-by-step explanation:

15/20 = 0.75

75%

Answer:

C) 0.75

Step-by-step explanation:

15 of the last 20 times = 15/20

15/20 = 0.75

Answer:

Equal to

Step-by-step explanation:

Hello!

Let's simplify the left side:

Remember that the negative sign also means opposite, so the opposite of negative 9 is positive 9.

Let's simplfy the right side:

Remember that in an absolute value bracket, any positive value stays positive, but any negative value turns to the positive value.

So the inequality is 9 _ 9

Therefore the sign should be "=" as 9 is equal to 9.

Answer: 156

Step-by-step explanation: do 600 x 0.26 since 0.26 = 26%, 0.26 x 600 is 156.

Answer:

156

Step-by-step explanation:

600/x=100%/26%

[tex]\frac{x}{600}[/tex] [tex]\frac{26}{100}[/tex]

x=156

Hi,

It is unlikely that the game show contestant will win the boat.

To be exact it is 20% chance that the game show contestant will win the boat.

XD

Check the picture below.

[tex]\textit{area of a regular polygon}\\\\ A=\cfrac{1}{2}asn ~~ \begin{cases} a=apothem\\ n=\stackrel{side's}{number}\\ s=\stackrel{side's}{length}\\[-0.5em] \hrulefill\\ a=7\\ s=8.1\\ n=6 \end{cases}\implies \stackrel{\textit{area of the hexagonal base}}{A=\cfrac{1}{2}(7)(8.1)(6)} \\\\[-0.35em] ~\dotfill[/tex]

[tex]\textit{volume of a prism}\\\\ V=Bh ~~ \begin{cases} B=\stackrel{base's}{area}\\ h=height\\[-0.5em] \hrulefill\\ B=\frac{1}{2}(7)(8.1)(6)\\ V=3572.1 \end{cases}\implies 3572.1=\cfrac{1}{2}(7)(8.1)(6)h \\\\\\ 3572.1=170.1h\implies \cfrac{3572.1}{170.1}=h\implies \boxed{21=h}[/tex]

well, the length of the tunnel is "h", now two 8 meters cars, that's 8+8=16 meters plus a 3 meter connector between them, that's 16 + 3 = 19 meters, can those two cars connected like so fit inside the tunnel? sure thing, "h" can fit 19 meters just fine.

Answer: A. The range of each round is the same.

Step-by-step explanation:

Below shows the total score for both rounds. As you can see the totals for both rounds are very close so their range is most likely the same.

Round 1

(2 x 2) + (3 x 3) + (4 x 2) + 5 = 26

   4             9             8

Round 2

(3 x 2) + (4 x 3) + (5 x 2) + 2 = 30
   6            12           10

Answer: the answer should be 9.22

Step-by-step explanation:

the formula is a^2 +b^=c ^

So 49 plus 36 equals 85

And the square root of 85 is 9.22

Answer:

you're screwed

Step-by-step explanation:

don't forget your phone so anyon doesn't ever have to do this

Cindy's house and Jenny's house are 1.33 miles distant from each other.

Speed is defined as the rate at which an object is moving (covering a particular distance). It is a scalar quantity as it defines only the magnitude and not direction.

The SI derived unit for speed is meter per second (m/s).

Given,

Cindy leaves house at 9 am and reaches to jenny house at 10 am

Let the distance between Cindy and Jenny house is x

First, Cindy walks half way to jenny house = x/2

then Cindy take U-turn and walks half way to home = x/4

again Cindy take U-turn and reaches jenny house = 3x/4

Total distance walked by Cindy = x/2 + x/4+ 3x/4

                                                    = x/2 + x

                                                    = 3x/2

Speed of jenny is 2 miles per hour

She walks 3x/2 distance and reaches Jenny house in one hour

⇒ 3x/2 = 2

⇒ 3x = 4

⇒ x = 4/3

⇒ x = 1.33 miles

Hence, distance between Cindy's and jenny's house is 1.33 miles.

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Answer:

1/2 cup

Step-by-step explanation:

Subtract 34 - 23 = 11 AND the closed number is 12 which is 1/12.

Hope this helps!

Answer:

2 in six chance or 1:3 simplified

Step-by-step explanation:

Answer:

1/3.

Step-by-step explanation:

The 2 numbers whcih are even and > 5 are 6 and 8.

So the Required Probability

= 2/6 = 1/3.

Answer:

the answer is d

Step-by-step explanation:

your welcome