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4 years ago

Number 5? I have no idea where to even start?

Mathematics

1 answer:

EleoNora [17]4 years ago

5 0

Y = 28000-(8500*3)
8500 is the yearly deprecation value times 3 because it is 3 years

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In a regular polygon each side has the same length. find the perimeter of the regular polygon

VLD [36.1K]

First, set these expressions equal in an equation. solve for x, then multiply x by 3 because there are 3 sides. the perimeter is 12

5 0

4 years ago

Carolyn paid a mechanic x dollars per hour for a 5 hour job plus $70 for parts. The total was $320. Which equation can be used t

Maslowich

70+5x=320
5x=250
x=50

The mechanic charged $50 per hour.

6 0

3 years ago

Read 2 more answers

The news reported that inflation will rise

statuscvo [17]

Answer:

$1,500

Step-by-step explanation:

A 2.5% increase in the $60,000 average family income would be required:

0.025 × $60,000 = $1,500

Your annual income would have to increase by $1,500.

4 0

3 years ago

Convert y=x squared +64x + 12 into graphing form

guajiro [1.7K]

$To \ convert \ the \ standard \ form \ y = ax^2 + bx + c \ of \ a \ function \ into \ vertex \ form \\ \\ y = a(x - h)^2 + k ,\\ \\ we \ have \ to \ write \ the \ equation \ in \ the \ complete \ square \ form \ and \ vertex(h, k) \ is \ given \ by:$

$h = \frac{-b}{2a} , \ \ k = c -\frac{b^2}{4a} \\ \\y = a(x - h)^2+k$

opens up for a > 0, and down for a < 0

$y=x^2 +64x + 12\\ \\a=1,\ b=64 \ c = 12 \\ \\h = \frac{-64}{2}=-32 \\ \\ k = 12 -\frac{64^2}{4 }=12-\frac{4096}{4}=12-1024= -1012\\ \\y = (x+32)^2-1012 \\ \\ This \ means \ the \ vertex \ of \ the \ parabola \ is \ at \ the \ point \ (-32, -1012)\\ \\ and \ the \ parabola \ is \ concave \ up.$

3 0

4 years ago

A) Expand and simplify.<br> 7(x - 2) - 2(x - 1)<br> b) Factorise fully.<br> 8x2<br> + 6x

cluponka [151]

Answer:

a). 5x - 12 b). 2x(4x + 3)

Step-by-step explanation:

a). 7(x - 2) - 2(x - 1)

= 7x - 14 - 2x + 2

= 5x - 12

b). 8x² + 6x

2x(4x + 3)

5 0

3 years ago