Solve
3x - (x - 4) = 18

Answer:

A) y = x^2 -1

B) -y = 2x^2 +1  We multiply B) by -1

B) y = -2x^2 -1

We can then say x^2 -1 = -2x^2 -1

3 x^2 = 0

x = 0

************* Double-Check: ******************

Equation A) y = -1 and

Equation B) y = -1

Step-by-step explanation:

Answer:

2 2/5 + 2 (-1/5)=2

Step-by-step explanation:

2 2/5+ -2/5

2x5+2/5+ -2/5

12/5 + -2/5

12/5 - 2/5

12-2/5

10/5

2

Answer:

d/7 = c

Step-by-step explanation:

-5c+d=2c

Add 5c to each side

-5c+5c+d=2c+5c

d = 7c

Divide each side by 7

d/7 = 7c/7

d/7 = c

Answer:

d/7 = c

Step-by-step explanation:

STEP

1

:

           d

Simplify   —

           c

Equation at the end of step

1

:

    c          d

 (((—•c)-d)-(2•—))+d

    2          c

STEP

2

:

           c

Simplify   —

           2

Equation at the end of step

2

:

    c               2d      

 (((— • c) -  d) -  ——) +  d

    2               c.

Answer:

c = 25x

Step-by-step explanation:

c = total cost

x = games played

if you play 4 games, then change "x" into 4 and do 25 times 4

Answer:

i believe the operation emma should use is addition subtraction and mixed numbers

Step-by-step explanation:

hope this helps!!!

Given:

Initial height of tree = [tex]7\dfrac{11}{12}[/tex] foot

He cut [tex]1\dfrac{2}{3}[/tex] off of tree.

To find:

The remaining height of tree after cut.

Solution:

Initial height of tree is

[tex]7\dfrac{11}{12}=\dfrac{7\times 12+11}{12}[/tex]

[tex]7\dfrac{11}{12}=\dfrac{84+11}{12}[/tex]

[tex]7\dfrac{11}{12}=\dfrac{95}{12}[/tex]

He cut [tex]1\dfrac{2}{3}[/tex] off of tree.

[tex]1\dfrac{2}{3}=\dfrac{1\times 3+2}{3}[/tex]

[tex]1\dfrac{2}{3}=\dfrac{3+2}{3}[/tex]

[tex]1\dfrac{2}{3}=\dfrac{5}{3}[/tex]

Now,

Remaining height = Initial height - cut

[tex]=\dfrac{95}{12}-\dfrac{5}{3}[/tex]

[tex]=\dfrac{95-20}{12}[/tex]

[tex]=\dfrac{75}{12}[/tex]

[tex]=\dfrac{25}{4}[/tex]

[tex]=\dfrac{6\times 4+1}{4}[/tex]

[tex]=6\dfrac{1}{4}[/tex]

Therefore, the remaining height of the tree is [tex]6\dfrac{1}{4}[/tex] foot.

Answer:

its 6

Step-by-step explanation:

i now i am in the 12th grade

Answer:

Explanation:

Let Vc be the velocity of the car and I'm the velocity of the motorcycle. If we convert their given values, we get:

Vc = 87 km/h * 1000m / 1km * 1h / 3600s = 24.17m/s

Vm = 95 km/h * 1000m / 1km * 1h / 3600s = 26.38m/s

Since their positions are equal after 17s we can stablish that:

Where d is the initial separation distance of 54m. Solving for a, we get:

  Repacing the values:

Answer:

The answer is D. A clockwise rotation of 144 degrees about the origin.

Step-by-step explanation:

In most cases; when an object is transformed, the position of the object changes. A clockwise rotation of 144 degrees about the origin will map the pentagon onto itself.

Given:

The attached pentagon

The number of sides (n) in a pentagon is:

[tex]n = 5[/tex]

The pentagon will not be mapped onto itself when reflected across line m because m is not at the center of the polygon

The pentagon will not be mapped onto itself when reflected across the x-axis because the pentagon has 5 sides (odd number of sides)

To map the pentagon onto itself, the pentagon has to be rotated.

The angle of rotation is:

[tex]\theta = \frac{360}n[/tex]

[tex]\theta = \frac{360}5[/tex]

[tex]\theta = 72[/tex]

Other possible angles of rotation must be a multiple of 72. i.e.

[tex]\theta = 72, 144, 216, 288....[/tex]

This means that: option (d) is correct because 144 is a multiple of 72

Hence, a clockwise rotation of 144 degrees about the origin will map the pentagon onto itself.

Read more about transformation at:

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Answer:

39

Step-by-step explanation:

Step 1: Define

x(5x - 2)

x = 3

Step 2: Distribute

5x² - 2x

Step 3: Substitute and Evaluate

5(3)² - 2(3)

5(9) - 6

45 - 6

39

Answer:

39

Step-by-step explanation:

x(5x - 2)

Substitute x for 3

3(5 x 3 - 2)

Multiply inside Parenthesis

3(15 - 2)

Subtract 2

3(13)

Multiply to get

39

Answer

x= -3  -> y= -2

x= -1 -> y= -4

x= 3 -> y= -2

Step-by-step explanation:

The lines around the x in the equation is the absolute value symbol.

If you put a positive in, it stays positive.

If you put a negative in, it becomes positive.

Then solve normally.

Good luck!

Answer:

80%

Step-by-step explanation:

I hope this helps!

The percentage of the month of June that experiences rain is 80%.

The percentage is calculated by dividing the required value by the total value and multiplying by 100.

Example:

Required percentage value = a

total value = b

Percentage = a/b x 100

Example:

50% = 50/100 = 1/2

25% = 25/100 = 1/4

20% = 20/100 = 1/5

10% = 10/100 = 1/10

We have,

Number of days in June = 30.

Number of days in June that rains = 24

Now,

The percentage of days that rain in June.

= 24/30 x 100

= 80%.

Thus,

80% of the days in June rain.

Learn more about percentages here:

https://brainly.com/question/11403063

#SPJ2

Answer:

30

Step-by-step explanation:

The car has travelled for 30 miles.

Amount of gallons in fuel tank = 16 gallons

Gas mileage = 30 miles per gallon.

Since the driver has 15 gallons left, the number of miles that the car traveled will be:

= (16miles - 15 miles) × 30

= 1 mile × 30

= 30 miles

The car travelled for 30 miles.

Read related link on:

https://brainly.com/question/16805756

Answer:

[tex] \sqrt[3]{g } = \sqrt[3]{729} [/tex]

[tex]g = 9[/tex]

Answer:

12 pages per minute

Step-by-step explanation:

60 pages are being printed in 5 minutes.

60 pages/5 minutes = 12 pages/minute

Answer:

12 pages per minute

Step-by-step explanation:

60 = 5 minutes

1 minute = 60/5 = 12

Answer:

80

Step-by-step explanation:

64 + 4²

64 + 16

80

I didn't understand that fraction part of the question. Sorry.

Answer:

#1 x is 35

#2 x is 12

#3 x is 3

#4 is m and n

#5 x is 17

Step-by-step explanation:

Hope this helps

Answer:

35

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

I took the k12 test

✽ - - - - - - - - - - - - - - - ~Hello There!~ - - - - - - - - - - - - - - - ✽

➷ [tex](4.3\cdot10-3)(2\cdot 10-2)[/tex]

➷ [tex]= (43 - 3)((2) (10) -2)[/tex]

➷ [tex]= 40 ((2) (10)-2)[/tex]

➷ [tex]= 40(20 - 2)[/tex]

➷ [tex]= (40)(18)[/tex]

➷ [tex]= 720[/tex]

✽

➶ Hope This Helps You!

➶ Good Luck (:

➶ Have A Great Day ^-^

↬ May ♡

Given expression:

    (4.3 x [tex]10^{-3}[/tex]) (2 x [tex]10^{-2}[/tex])

Solving this equation,

   (4.3 x [tex]10^{-3}[/tex]) (2 x [tex]10^{-2}[/tex])  = 4.3 x [tex]10^{-3}[/tex] x 2 x [tex]10^{-2}[/tex]

                                      =  (4.3 x 2)  x 10⁻³ x 10⁻²

                                       = 8.6 x 10⁻³ ⁺⁽⁻²⁾

                                       = 8.6 x 10⁻⁵

The solution of this problem is 8.6 x 10⁻⁵

Answer:

214kg

Step-by-step explanation:

We can use the equation [tex]f(x)=(x)^2+18[/tex] to model the blobs growth. There are 14 days in 2 weeks so if we plug in [tex]f(14)[/tex] that will give us [tex]f(14) = (14)^2+18\\f(14)=214[/tex] so the blob will be 214kg in 2 weeks.

Answer:

8 km

Step-by-step explanation:

It is given that, the scale of a map says that 8 cm represents 5 km. We need  to find the  actual number of kilometers that is represented by 5 centimeters on the map.

8 cm = 5 km

1 cm = (8/5) km

For 5 cm, multiply (8/5) km by 5.

So,

x = 8 km

So, 8 km is represented by 5 centimeters on the map.

Answer:

Step-by-step explanation:

a) Here we have:

"In Family A, the youngest child is 7 years younger than the oldest, who is 18"

Let's define:

Y = age of the youngest child.

O = age of the oldest child.

Then we know that:

Y = O - 7

O = 18

Then we can replace the second equation into the first one:

Y = 18 - 7 = 11.

b) Here we have:

"In Family B, the middle child is 5 years older than the youngest child."

Let's define:

Y = age of the youngest child.

M = age of the middle child.

Here we have only one equation:

M = Y + 5.

Answer:

M = Y + 5.

Also thats my mom's birthday :D

Answer:

B. 3 pages are edited every five minutes

D. 6/10 of a page is edited per minute

Step by step:

Three pages are done at an interval of five minutes.

Six tenths of a page is done every minute

0.6 * 5 = 3 per five minutes

The other statements are false.

12/3 = 4, four done every minute, really?

5 pages are edited every three minutes.

This would disprove statement B.

And does not align with the graph.

Hope this helps.

Answer:

B. 3 pages are edited every five minutes

D. 6/10 of a page is edited per minute

Step-by-step explanation:

Step-by-step explanation:

-px + r = 8x -2

Step 1: Add -8x to both sides.

-px + r + -8x = 8x - 2 + -8x

-px + r - 8x = 2

Step 2: Add -r to both sides.

-px + r - 8x + -r = -2 + -r

-px - 8x = -r - 2

Step 3: Factor out variable x.

x(-p - 8) = -r - 2

Step 4: Divide both sides by -p - 8.

x(-p - 8) = -r - 2

-p - 8 -p - 8

Answer

x = r + 2

p + 8

Answer:

Yes

Step-by-step explanation:

If the number ends with 5 or 0, then it is divisible by 5

if you could subscribe to my friend penny_pg3d that would be great!

Answer: -5/6

Step-by-step explanation:

slope formula m=(y2-y1)/(x2-x1)

m=(-2-8)/(20-8)

m=-10/12

(simplify) m=-5/6

The slope value in the simplest form of a line that passes through (8, 8) and (20, -2) is:  [tex]\mathbf{-\frac{5}{6}}[/tex]

Recall:

Slope (m) = [tex]\frac{y_2 - y_1}{x_2 - x_1}[/tex]

Thus:

Given two points that a line passes through as: (8, 8) and (20, -2),

(8, 8) = [tex](x_1, y_1)\\\\[/tex]

(20, -2) = [tex](x_2, y_2)[/tex]

Slope (m) = [tex]\frac{-2 - 8}{20 - 8}[/tex]

Slope (m) = [tex]\frac{-10}{12}[/tex]

Slope (m) = [tex]\mathbf{-\frac{5}{6}}[/tex]

Therefore, the slope value in the simplest form of a line that passes through (8, 8) and (20, -2) is:  [tex]\mathbf{-\frac{5}{6}}[/tex]

Learn more here:

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Answer:

2 cows

Step-by-step explanation: