I might sound really dum I forgot what shape this is someone please tell me ​

Answer:

a = 6

Step-by-step explanation:

120 = 3 + 3(7a - 3)   (by PEDMAS, expand parentheses first by distributive property)

120 = 3 + 7a(3) - 3(3)

120 = 3 + 21a - 9

120 = 21a - 6    (add 6 to both sides and rearrange)

21a = 120 + 6

21a = 126   (divide both sides by 21)

a = 126/21

a = 6

Step-by-step explanation:

120-(3+3*(7*a-3))=0

Step by step solution :

STEP

1

:

Equation at the end of step 1

120 - (3 + 3 • (7a - 3)) = 0

STEP

2

:

STEP

3

:

Pulling out like terms :

3.1 Pull out like factors :

126 - 21a = -21 • (a - 6)

Equation at the end of step

3

:

-21 • (a - 6) = 0

STEP

4

:

Equations which are never true:

4.1 Solve : -21 = 0

This equation has no solution.

A a non-zero constant never equals zero.

Solving a Single Variable Equation:

4.2 Solve : a-6 = 0

Add 6 to both sides of the equation :

a = 6

One solution was found :

a = 6

Answer:

22.4

Step-by-step explanation:

Just multiply 3.2 by 7 to get 22.4 miles a week. Easy.

Answer:

x + 14

Step-by-step explanation:

Let's break it down to key terms:

14

more (+)

a number (x)

So 14 more than a number is just adding 14 to x.

x + 14

Hope this helps :)

Answer:

[tex] 2 {d}^{5} (5 {d}^{2} + 1)[/tex]

Step-by-step explanation:

[tex]10d^7 + 2d^5 \\ \\ = 2 {d}^{5} (5 {d}^{2} + 1)[/tex]

Answer:

(2,-2)

Step-by-step explanation:

When over the y-axis you change the x axis to the opposite of either neg. or positive

Answer:1375

Step-by-step explanation:

X= 15 is given

X squared is 15x15 = 225

1600 - 225= 1375

Answer:

Step-by-step explanation:

1600x=      

x=15 feet

1600 x 15 Ft = 24000 Ft

Answer:

1. 60:80

2. 90:120

3. 120:160

Step-by-step explanation:

1. 30(2) : 40(2) = 60:80

2. 30(3) : 40(3) = 90:120

3. 30(4) : 40(4) = 120:160

Hello!!

Answer:

60:80

and

90:120

Hope this helps!!! :)

Answer:

inequality form: x

x≤ 4 or x≥8

Interval Notation:

(-∞, 4] U[8,∞)

Explanation

Solve the following inequality, then graph the solution set. | x | − 6 ≥ − 4. Answer in interval notation.

Answer:

Greta spends$25-$20=$5per week.

Answer:The value of x must be 7 units.

Step-by-step explanation:

hope this helps

Answer:

let me look

Step-by-step explanation:

Answer:

no sorry but it's okay you at least guess

Step-by-step explanation:

13.56 is the square root of 184

Answer:

1/9?

Step-by-step explanation:

Answer:

x=2

Step-by-step explanation:

Simplify both sides of the equation.

2x−1−(−x + 3)=6−2x

(Distribute the Negative Sign)

2x−1 + −1(−x + 3)=6−2x

2x + −1 + −1(−x) + (−1)(3)=6−2x

2x + −1 + x + −3=6−2x

2x + −1 + x + −3=6 + −2x

(Combine Like Terms)

(2x + x) + (−1 + −3)=−2x+6

3x + −4=−2x + 6

3x−4=−2x + 6

Add 2x to both sides.

3x−4 + 2x=−2x + 6 + 2x

5x−4=6

Add 4 to both sides.

5x−4 + 4=6 + 4

5x=10

Divide both sides by 5.

5x/5=10/5

x=2

Answer:

12/7 or 1 5/7

Step-by-step explanation:

6 * 2 = 12

so

12/7 = 1 5/7

Answer:

1.714 and/or 1 5/7

Step-by-step explanation:

You're welcome :P

Answer:

x^6*y^24

Step-by-step explanation:

This will become:

[tex]x^6*(y^4)^6[/tex]

Next, multiply the exponents for y:

x^6 * y^24

So the answer is x^6*y^24

Answer:

C.

Expla:

x²-49

x²-7²

= (x+7)(x-7)

Answer:

5

Step-by-step explanation:

First, you would want to subtract the first nights cost from the bill, which you would get 108. And then you would want to divide 108 by how much it costs to stay additional night, so 108 divided by 27 = 4. But you have to remember to add the first night you stayed so it would be 5. I hope this helps :)

Answer:

4 nights

Step-by-step explanation:

148-40=108

108÷27=4

So, you spent 4 nights at the hotel.

Answer:

6 groups of 6 counters.

Step-by-step explanation:

36/6=6

Answer:

6

Step-by-step explanation:

6x6=36

Answer:

5

Step-by-step explanation:

You multiply/divide all the fractions with each other.

Answer:

x,y =3,-4

Step-by-step explanation:

// Solve equation [1] for the variable  y

 [1]    y = 2x - 10

// Plug this in for variable  y  in equation [2]

  [2]    3x - 2•(2x-10) = 17

  [2]    -x = -3

// Solve equation [2] for the variable  x

  [2]    x = 3

// By now we know this much :

   x = 3

   y = 2x-10

// Use the  x  value to solve for  y

   y = 2(3)-10 = -4

Answer:

5d+3

Step-by-step explanation:

just as you combine regular numbers you can combine terms that have the same variable raised to the same exponent, and 7d-2d=5d. So the equation simplifies to 5d+3

Answer:

mIHE should be 133°

Step-by-step explanation:

A line is 180°, so, if you take 47° off you're left with 133.

Giving you an answer of 133°.

Answer: x = 3

because ΔABC has BD is the bisector of ∠ABC

=> AD/AB = DC/BC

⇔ x/6 = 4/8

⇔ x/6 = 1/2

⇔ x = 6.1/2

⇔ x = 3

Step-by-step explanation:

Answer: x=3

Step-by-step explanation:

Answer:

Step-by-step explanation:

159.39(1-25/100)

159.39(100-25)/100

159.39(75)/100

159.39(0.75)

$119.54

Yes. The first step is to set up the equations so that one unknown cancels out: here, the z's will cancel out:

5z+4y=-14

3z+6y=-6

-15z-12y=42

15z+30y=-30

8y=12

y=1.5

3z+6y=-6

3z+6(1.5)=-5-9

z=-14/3

Answer:

Exact Form: 6√2

Decimal Form: 8.485