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Sever21 [200]
2 years ago
9

14 thanks you so much

Mathematics
2 answers:
Zigmanuir [339]2 years ago
7 0

Set up the equation 88+7.25h=169. Now that we have the equation and the only variable to solve is h, we will begin the algebra.

1. Using the Subtraction Property of Equality, subtract 88 from both sides to get the equation 7.25h = 81

2. Now use the Division Property of Equality to divide both sides of the equation by 7.25. You should then get h = 11.1724...

Now assuming he is getting paid by the hour, the number of hours he needs to work to get the skateboard is 12.

Anuta_ua [19.1K]2 years ago
5 0

In order to solve this problem I simply set up an equation. The equation is 169 = 88 + 7.25h. I put "y" as 169 as it's the goal and "h" represents the hours he works to get his skateboard. Here's how you solve the equation to find "h" to get the number of hours:

1. Move 88 over and subtract- 81 = 7.25h

2. Divide by 7.25 to both sides- 11.17 = h.

I would say that he has to work close to 11.17 hours to meet his goal. Hope this helped :))

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HACTEHA [7]

<u>We'll assume the quadratic equation has real coefficients</u>

Answer:

<em>The other solution is x=1-8</em><em>i</em><em>.</em>

Step-by-step explanation:

<u>The Complex Conjugate Root Theorem</u>

if P(x) is a polynomial in x with <em>real coefficients</em>, and a + bi is a root of P(x) with a and b real numbers, then its complex conjugate a − bi is also a root of P(x).

The question does not specify if the quadratic equation has real coefficients, but we will assume that.

Given x=1+8i is one solution of the equation, the complex conjugate root theorem guarantees that the other solution must be x=1-8i.

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2 years ago
120÷(18-(20-3(9-5)simplify​
Ilya [14]

Answer:

20÷[18-{20-3(4)}]

120÷[18-[20-12]]

120÷[18-8]]

120÷10

12

Step-by-step explanation:

6 0
3 years ago
Match each area to its corresponding radius or diameter of the circle.(All areas are approximate.) )
MA_775_DIABLO [31]

Answer:

<u>Radius: 12 units </u>

  • Area: πr² = 3.14*12² = 452.16 square units

<u>Diameter: 16.8 units</u>

  • Area: πd²/4 = 3.14*16.8²/4 = 221.5584 square units

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5 0
2 years ago
Read 2 more answers
PLEASE HELP WILL MARK BRAINLIEST
Nataliya [291]

Answer:

You may or may not need to include the units.

A = 18x - 18

P = 6x + 6

Graph is attached below. (2, 18)

Step-by-step explanation:

Substitute the information we need, "l" and "w", into the formulas.

l is for length, 6cm.

w is for width, (3x - 3)cm.

Use the formula for area of a rectangle.

A = lw

A = (6)(3x-3)cm²

A = (18x - 18)cm²  or 18x - 18

Use the formula for perimeter of a rectangle.

P = 2(l + w)

P = 2(6 + (3x - 3))cm

P = 2(3x + 3)cm

P = (6x + 6)cm  or 6x + 6

Linear equations are written in the form y = mx + b, so we do not need to factor or further simplify the formulas.

To graph, first turn the "m" value into a fraction form.

8 -> 8/1

6 -> 6/1

You need two points to graph each line.

For each equation, the first point is on the y-axis at the "b" value. Then use the "m" in the equation to count the number of units up (numerator) and to the right (denominator).

The solution is (2,18)

8 0
3 years ago
HELPPP PLEASE <br> i need a fast reply<br> asking for a friend in need of desperate help :((((
weqwewe [10]

Answer:

y =14

11x = 11*3.5 =38.5

3x+2y = 11x = 38.5

Step-by-step explanation:

The perimeter of a triangle is the sum of all three sides

3x+2y + 11x+y = 91

Combine like terms

14x +3y = 91

The lines mean the sides are equal

3x+2y = 11x

Simplify

Subtract 3x from each side

3x-3x+2y = 11x-3x

2y = 8x

Divide by 2

2y/2 = 8x/2

y = 4x

Substitute 4x in the first equation every time you see y

14x +3y = 91

14x +3(4x) = 91

14x+12x=91

26x = 91

Divide by 26

26x/26 =91/26

x = 3.5

Now we can find y

y = 4x

y = 4(3.5)

y = 14

We know x and y we can find the length of each of the sides

y =14

11x = 11*3.5 =38.5

3x+2y = 11x = 38.5

8 0
3 years ago
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