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3 years ago

What are the solutions to the quadratic equation below?

Mathematics

2 answers:

ValentinkaMS [17]3 years ago

5 0

C is the right answer. Great job!

Alborosie3 years ago

4 0

I am pretty sure the answer is C.

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Solve for u -2/9u=10

Nata [24]

Answer:

$u = -45$

Step-by-step explanation:

<u>Step 1: Multiply both sides by -9/2</u>

<u /> $-\frac{2}{9}u = 10$

$-\frac{9}{2} *-\frac{2}{9}u = 10 * -\frac{9}{2}$

$u = -\frac{90}{2}$

$u = -45$

Answer: $u = -45$

8 0

3 years ago

How to find range of stem and leaf chart

strojnjashka [21]

Answer:

The range is the difference between the smallest and largest number within the group of numbers. so simply lists your numbers in the stem and leaf plot from smallest to largest and then find your largest number in the set and your smallest number in the set and subtract the two. Then there you have it ! The range of the stem and leaf plot

Step-by-step explanation:

3 0

3 years ago

He is paid a commission of 9 percent of his first $6,000 in sales during the month and 14 percent on all sales over $6,000. What

Agata [3.3K]

Answer:

$1,956.80

Step-by-step explanation:

For amounts over $6000, the commission can be computed as ...

0.14s -300 . . . . . . for sales (s) ≥ 6000

So, for $16,120 in sales, the commission is ...

0.14×$16,120 -300 = $2,256.80 -300 = $1,956.80

The commission schedule suggests that for larger amounts, you divide the problem into two parts: calculate the commission on $6000, and separately calculate the commission on the amount over $6000.

0.14(s -6000) + 0.09(6000)

= 0.14s - 0.14·6000 +0.09·6000

= 0.14s -300 . . . . the formula used above for s ≥ 6000

6 0

3 years ago

Find the distance between xequals[Start 2 By 1 Matrix 1st Row 1st Column 8 2nd Row 1st Column negative 5 EndMatrix ]and yequals[

kherson [118]

Answer:

Distance =√(x₁ - y₁)²+ (x₂ - y₂)² = √97 = 9.85

Step-by-step explanation:

The Matrix X and Y could also be referred to as vectors in Rⁿ dimensions.

if Vector X = ( x₁ , x₂) and Vector Y = (y₁ , y₂)

then, Distance (X-Y) = ||X-Y|| = √(x₁ - y₁)²+ (x₂ - y₂)²

where, x₁ = 8, x₂ = -5 and y₁ = -1 , y₂ = -9

Distance = √(8 - (-1))²+ (-5 - (-9))² = √9² + 4² =√97 = 9.85

4 0

3 years ago

What is th he sum of the first seven terms of the series -3+6-12+24-...?

ohaa [14]

Answer:

-129

Step-by-step explanation:

-3+6-12+24-48+96-192=

6+24+96-3-12-48-192=

126-255=

-129

Hope this helps!

5 0

3 years ago