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3 years ago

Which polynomial equation has either 1 or 3 real positive roots and either 0 or 2 real negative

Mathematics

1 answer:

Ymorist [56]3 years ago

8 0

Answer:

i think c

Step-by-step explanation:

sorry if im wrong

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Alvin is 9 years younger than Elga. The sum of their ages is 67. What is Elga's age?

ASHA 777 [7]

Answer:

Elga is 38

Step-by-step explanation:

Alvin is 29

38 + 29 = 67

6 0

2 years ago

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I built a storage shed in the shape of a rectangular box on a square base. The material that I used for the base cost $4 per squ

Dmitrij [34]

Answer:

$V = \frac{450L - 6 L^{3} }{10}$

Step-by-step explanation:

The volume of a cuboid can be determined simply by the formula: V= LWH

(where: L is length, H is height and W is width).

In this particular case the base is a square, which means the length and width are equal. Hence we can modify the equation of volume:

$V = L^{2} H$

Now we need to find the value of H in terms of L. For this we can develop the equation for cost incurred in building the storage shed. We find the area of each side of the cuboid, and then we multiply it by cost per square feet to find the total cost incurred; as shown below:

Base: $L$ × $L = L^{2}$

Roof: $L$ × $L = L^{2}$

Side: $4 H$ × $L = 4HL$ (we have considered all four sides)

Base: 4 $L^{2}$

Roof: 2 $L^{2}$

Side: $2.50 * 4HL = 10 HL$

Total cost:

4 $L^{2}$ + 2 $L^{2}$ + 10 $HL$ = 450

We simplify this equation further:

6 $L^2$ + 10<em>HL </em>= 450

10HL = 450 - 6 $L^2$

$H = \frac{450- 6 L^2}{10L}$

We now have the value of H, which we can substitute in the formula of Volume we deduced earlier:

substituting $H = \frac{450-6L}{10L}$ in $V = L^{2} H$ :

$V = L^2$ × $\frac{450 - 6L }{10L}$

Simplifying it further:

$V = L$ × $\frac{450 - 6L}{10}$

$V= \frac{450L - 6L^3}{10}$ is the final answer.

3 0

3 years ago

I need help once again!! Did I forget to mention that ur awesome??

Montano1993 [528]

The kite area can be calculated using the formula
a = 1/2 × d₁ × d₂
with d₁ as first diagonal and d₂ as second diagonal

From the question, we know that
d₁ = 9.5 + 9.5
d₁ = 19 in

d₂ = 7 + 12
d₂ = 19 in

Calculate the area by plugging in the numbers into the formula
a = 1/2 × d₁ × d₂
a = 1/2 × 19 × 19
a = 1/2 × 361
a = 180.5

The area of the kite is 180.5 in²
The answer is fourth answer

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3 years ago

Based on an average of 100 and a standard deviation of 10, what number on the standard normal curve matches

aliina [53]

<span> ADD YOUR ANSWER</span>jaylaallen<span>Rank: </span>Beginner<span>42/100</span>My challenges

Answer 5 questions from any subject in 48 hours to collect 50 points

3/50h : 10m

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3 years ago

Given f(x)=x^2+2x-2, evaluate f(-2)

sergiy2304 [10]

Step-by-step explanation:

Hope it will help :)

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3 years ago

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