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3 years ago

Please help i have to finish 15 assignments today including a final exam and i dont know what im doing

Mathematics

1 answer:

Sergio039 [100]3 years ago

5 0

Answer:

(-1,6) ; (-2,11)

Step-by-step explanation:

y= x^2-2x +3

y= -5x + 1

the best way to proceed is substitute the value of y shows in the second equation in the first equation (general rule: substitute the value shows in the linear equation in the quadratic equation)

-5x + 1 = x^2-2x+3

x^2 +3x + 2 = 0

(x+2)(x+1) = 0

x = -2

x = -1

Solution 1

x = -1

y = 5 + 1 = 6

Solution 2

x = -2

y = 10 + 1 = 11

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The U.S- based motorcycle manufacturer says that it expects to build 146,000 motorcycles this year , up from 128,000 last year .

beks73 [17]

Answer:

14.06%

Step-by-step explanation:

Here we are asked to find the percent increase in the production of the motorcycle for US based manufacturer.

The production for the last year = 128,000

The production for the current year = 146,000

Total increased production = 146,000-128,000

= 18,000

Hence percentage calculation = $\frac{\ increase \ in \ sale}{\ last \ year \ sale} \times 100$ %

Increased percentage = $\frac{18000}{128000} \times 100$ %

= $0.140625 \times 100$ %

=14.06%

7 0

3 years ago

Write each expression without the absolute value symbol |3x+12|

klasskru [66]

Answer:

Step-by-step explanation:

|3x+12|

one is as it is one is the negative value of it

3x + 12 - (3x + 12)

- 3x - 12

That is because both negative and positive values put in am absolute value become positive.

3 0

3 years ago

In 1992, there were 41 comma 984 shopping centers in a certain country. In 2002, there were 48 comma 225. (a) Write an equati

Illusion [34]

Answer:

Step-by-step explanation:

The equation expressing the number y of shopping centers in terms of the number x of years after 1992 will be LINEAR in nature

The standard equation is expressed as;

y = mx+c

m is the slope

c is the intercept

If in 1992, there were 41,984 shopping centers in a certain country and in 2002, there were 48,225 we can express this as coordinate points

(0, 41984) and (10, 48,225)

Get the slope

m = 48,225-41,984/10-0

m = 6241/10

m = 624.1

Get the intercept, substitute m = 624.1 and the point (0,48225) into the formula y = mx+c

48225 = 624.1(0)+c

48225 = 0+c

c = 48225

Get the required equation

y = 624.1x+48225

5 0

3 years ago

Can someone please explain this to me? I don't get it

alina1380 [7]

A straight line is equal to 180, anything going all around is 360 if the angles are crossing eachother then the angles across from eachother are equal so x=z
X+150=180, Im not good at explaining sorry, but i know what I’m doing yk just lmk sorry if it didn’t help

8 0

3 years ago

Read 2 more answers

You're uncle is having a new roof installed in his house. The roof is a square pyramid. The side length of the base of the roof

Kaylis [27]

Answer:

The height of the roof in his house is 72.43 ft.

Step-by-step explanation:

The volume of square pyramid is :

$V=\frac13 Bh$