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3 years ago

Which values of P and Q result in an equation with no solutions?

Mathematics

1 answer:

Ad libitum [116K]3 years ago

3 0

Try this solution/explanation:

<u>way 1</u>:

rule: for an equation where no roots P+Q=0. It means, Px-Qx=0, ⇔ x(P-Q)=0, ⇔ P=Q.

for answer 'D' P=Q=15.

<u>way 2</u>:

rule: if an equation of the line has a form y=kx+b, then y₁||y₂ if k₁=k₂. It means, for y₁=Px-45 || y₂=Qx+75, then P=Q. P=Q, if 'D' answer.

Answer: D

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Solve log812 = x – 2 . Round your answer to four decimal places.

gizmo_the_mogwai [7]

Answer:

x = log (812) + 2

Step-by-step explanation:

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Complete the statements about circle J. Arc M P is a and measures degrees. Arc M L N is a and measures degrees.

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Step-by-step explanation:

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Suppose you buy flour and corn meal in bulk to make flour tortillas and corn tortillas flour cost $1.50 per pound and corn meal

GarryVolchara [31]

Answer:

<h3>1.50X+2.50Y=25</h3><h3>&</h3><h3>X+Y=6 are required systems</h3>

(Solution: X=16 and Y=-10)

<u>Explanation:</u>

》Total money that will be spent on flour and corn meal altogether(T)

=$25

》Since it is not mentioned that whether corn and flour are bought in same quantity or not, we will assume them of different quantity.

i.e.,Suppose

》<u>X pound </u>of <u>flour</u> is bought

》<u>Y pound </u>of <u>corn</u> is bought.

So,

》Cost of flour(F)=$1.50X

》Cost of corn(C)=$2.50Y

So total cost will be sum of cost of flour and corn altogether,

Writing it in equation(linear),

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3 0

3 years ago

Write two different expressions that<br> represent the quantity x decreased<br> by 30%.

s344n2d4d5 [400]

Answer:

Step-by-step explanation:

x - 30 = 14 - 3x

4x = 44

x = 11

Let's call the unknown number x

Now let's decrease it by 30, that is x-30

Now let's write out "14 decreased by three times the number", that is 14 - 3x

The problem says these are the same, that is x - 30 = 14 - 3x

We now want to isolate, or solve for, x

Move the x to one side of the equation by adding 3x to both sides

3x + x -30 = 14 - 3x + 3x

4x -30 = 14

Now move the 30 to the right hand side by adding 30 to both sides

4x - 30 + 30 = 14 + 30

4x = 44

Now all we have to do to get x is divide both sides by 4

4x/4 = 44/4

x = 11

4 0

2 years ago

Whats its the result Of 25099.506/4.45?

777dan777 [17]

$\dfrac{25099.506}{4.45} \ \text{Divide}$

<span>Shift the decimal points of both 25099.506 and 4.45 to the right by 2 decimal places.
</span>
<span>(This is needed to convert 4.45 to 445, since long division must divide by a whole number.)
</span>
$\text{Set up the long division.}
$

$\text{Calculate 2509 divided by 445, which is 5 with a remainder of 284.}$
<span>
</span> $\text{ Bring down 9, so that 2849 is large enough to be divided by 445.}$

$\text{Calculate 2849 divided by 445, which is 6 with a remainder of 179.} 
$

$\text{Bring down 5, so that 1795 is large enough to be divided by 445.}$

$\text{Calculate 1795 divided by 445, which is 4 with a remainder of 15.}$

$\text{Bring down 06, so that 1506 is large enough to be divided by 445.
}$

$\text{Calculate 1506 divided by 445, which is 3 with a remainder of 171.}$

$\text{Bring down 0, so that 1710 is large enough to be divided by 445.}$

$\text{Calculate 1710 divided by 445, which is 3 with a remainder of 375.}$

$\text{Bring down 0, so that 3750 is large enough to be divided by 445.}$

$\text{Calculate 3750 divided by 445, which is 8 with a remainder of 190.}$

$\text{Bring down 0, so that 1900 is large enough to be divided by 445.}$

$\text{Calculate 1900 divided by 445, which is 4 with a remainder of 120.}$

$\text{Bring down 0, so that 1200 is large enough to be divided by 445.}$

$\text{Calculate 1200 divided by 445, which is 2 with a remainder of 310.}$

<span>Therefore, 25099.506 ÷ 4.45 ≈ 5640.33842</span>

8 0

3 years ago