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3 years ago

True or false: sometimes, a quadratic expression cannot be factored.

Mathematics

1 answer:

lyudmila [28]3 years ago

8 0

Answer:

true

Step-by-step explanation:

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Sales An apparel shop sells skirts for $45 and blouses for $35. Its entire stock is worth $51,750. But sales are slow and only h

inysia [295]

Answer:

260 skirts and 270 blouses are left in the store after the sale.

Step-by-step explanation:

Let x be the number of skirts and y be the number of blouses.

An apparel shop sells skirts for $45 and blouses for $35

Cost of entire stock = $51,750

Thus, we can write the equation,

$45x + 35y = 51750$

Half the skirts and two-thirds of the blouses are sold for a total of $30,600.

Thus, we can write the equation,

$45(\dfrac{x}{2}) + 35(\dfrac{2y}{3}) = 30600\\\\135x + 140y = 183600$

Solving the two equations by elimination method, we have,

$135x + 140y-(135x + 105y) = 183600 - 155250\\35y = 28350\\\\y = \dfrac{28350}{35} =810\\\\x = \dfrac{51750-35(810)}{45} = 520$

Thus, there were 520 skirts and 810 blouses in the store.

Skirt left =

$520-\dfrac{520}{2} = 260$

Blouses left =

$810 - \dfrac{2}{3}\times 810 = 270$

Thus, 260 skirts and 270 blouses are left in the store after the sale.

5 0

3 years ago

A rectangle has a length of 8 feet and a width of 6ft if its length and width increased by 50% each what is the area of the new

kipiarov [429]

Answer:

108ft

Step-by-step explanation:

half of 8 is 4, equals 12.

half of 6 is 3, equals 9

9x12=108

6 0

3 years ago

Please help lol im confused i dont know why but please help

Stella [2.4K]

Answer:

No, but if it was how many studens school like math then yes

in Step-by-step explanation:

3 0

3 years ago

State the equation of the line which has the y-intercept :

aliina [53]

Answer:

A general line is written as:

y = a*x + b

where:

a is the slope

b is the y-intercept.

a) y-intercept = 2 and slope = 7.

This line is:

y = 7*x + 2

b) y-intercept = -1 and is parallel to y= 5x - 7.

Now, if two linear equations are parallel if they have the same slope and different y-intercept. Then if we want a line parallel to y= 5x - 7, this means that the slope of this line must also be equal to 5.

y = 5*x + (-1)

c) y-intercept 2 and is inclined at 45° to the x- axis.

When we have an inclination of A degrees from the x-axis, the slope of the equation is given by: a = Tan(A)

In this case, we have A = 45°

Then the slope is a = Tan(45°) = 1

Then the equation of this line is:

y = 1*x + 2

4 0

3 years ago

Solve 12x+6 2 9x+ 12.

Nadusha1986 [10]

Assuming that there are plus signs between the 6, 2, and 9 the answer is 21x+20

6 0

3 years ago