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3 years ago

35 points!!!

Mathematics

1 answer:

Llana [10]3 years ago

6 0

Step-by-step explanation:

For each cell in the difference column, simply subtract the second blue column from the first.

$525 - $500 = $25

$0 - $80 = -$80

$100 - $65 = $35

At the bottom, the surplus/shortage is the total wages - total expenses.

$2500 - $2597 = -$97

$2650 - $2502 = $148

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Solve for u. U/-1 +-4=-1 U =

kherson [118]

Answer:

U = -3

Step-by-step explanation:

U/-1 +-4=-1

Add 4 to each side

U/-1 +-4+4=-1+4

U / -1 = 3

Multiply each side by -1

U / -1 * -1 = 3* -1

U = -3

3 0

2 years ago

Find the solution for the quadratic equation by completing the square. x^2+18x=63

vekshin1

Good evening ,

Answer:

Step-by-step explanation:

x²+18x=63 ⇌ x²+18x+81 = 63 + 81

⇌ (x+9)² = 144 ⇌ (x+9)² = 12² ⇌ (x+9-12)(x+9+12) = 0

⇌ (x-3)(x+21) = 0

⇌ x=3 or x=-21.

5 0

3 years ago

Read 2 more answers

For a singing contest in which 42,000 votes were cast, the winner received 3/5 of the votes. How many votes did the winner not r

kirza4 [7]

42,000 x .60 (3/5)=25200

42,000-25,200= 16,800

8 0

3 years ago

The base of a solid in the region bounded by the two parabolas y2 = 8x and x2 = 8y. Cross sections of the solid perpendicular to

Usimov [2.4K]

The two curves intersect at two points, (0, 0) and (8, 8):

$x^2=8y\implies y=\dfrac{x^2}8$

$y^2=\dfrac{x^4}{64}=8x\implies\dfrac{x^4}{64}-8x=0\implies\dfrac{x(x-8)(x^2+8x+64)}{64}=0$

$\implies x=0,x=8\implies y=0,y=8$

The area of a semicircle with diameter $d$ is $\dfrac{\pi d^2}8$ . The diameter of each cross-section is determined by the vertical distance between the two curves for any given value of $x$ between 0 and 8. Over this interval, $y^2=8x\implies y=\sqrt{8x}$ and $\sqrt{8x}>\dfrac{x^2}8$ , so the volume of this solid is given by the integral