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3 years ago

Add the polynomials (7x^3-2x^2-12)+(3x^3-8x^2+10x)

Mathematics

1 answer:

vlada-n [284]3 years ago

3 0

Answer:

10x³ - 10x² + 10x - 12

Step-by-step explanation:

(7+3)x³ + (-2-8)x² + 10x - 12

10x³ - 10x² + 10x - 12

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Engineers want to design seats in commercial aircraft so that they are wide enough to fit 99% of all males. Men have hip breadth

djverab [1.8K]

Answer:

Step-by-step explanation:

Engineers want to design seats in commercial aircraft so that they are wide enough to fit 98% of all males. Men have hip breadths that are normally distributed with a mean of 14.4 inches and a standard deviation of 1 inch. find P98. I really don't understand, help needed please.

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Find the z-value with a left tail of 0.98

invNorm(0.98) = 2.0537

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Find the corresponding x-value using x = zs+u

----

x = 2.0537*1+14.4

---

x = 16.45 inches

=====================

4 0

3 years ago

Given that sin∅ = 1/4, 0 < ∅ < π/2, what is the exact value of cos∅?

Artemon [7]

Answer:

Step-by-step explanation:

Using the trigonometric identity

• sin²x + cos²x = 1 , hence

cosx = ± $\sqrt{1-sin^2x}$

cosΦ > 0 for 0 < Φ < $\frac{\pi }{2}$

cosΦ = $\sqrt{1-(\frac{1}{4})^2 }$ = $\sqrt{1-\frac{1}{16} }$ = $\sqrt{\frac{15}{16} }$ = $\frac{\sqrt{15} }{4}$ → b

3 0

3 years ago

Read 2 more answers

Brainliest* show all work and look at the picture and do all three

hjlf

Answer/Step-by-step explanation:

Formula:

C = 2πr

Note: π = 3.14(About)

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[3] It given that the diameter is 16 ft.

Diameter - a straight line passing from side to side through the center of a body or figure

Radius - Half of Diameter

C = 3.14(16)

= 50.24 ft

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[4] It given that the radius is 7.5 in

Radius - a line segment extending from the center of a circle or sphere to the circumference or bounding surface.

C = 3.14(15)

= 47.1 in

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[5] It given that the radius is 42 m

C = 3.14(84)

= 263.76 m

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As Noted : π is approximately 3.14. Thus the answers are approximately

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For more information:

brainly.com/question/3471062

brainly.com/question/19434251

brainly.com/question/22387244

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Kavinsky

7 0

2 years ago

Help a girl out (2a^3−5a)−(7a+3a^2)

Anna007 [38]

For this case we must simplify the following expression:

$(2a ^ 3-5a) - (7a+ 3a ^ 2) =$

By definition of the law of multiplication signs we have to:

$- * + = -$

Rewriting the expression we have:

$2a ^ 3-5a-7a-3a ^ 2 =$

We add similar terms taking into account that:

Equal signs are added and the same sign is placed.

$2a ^ 3-3a ^ 2-12a$

ANswer:

$2a ^ 3-3a ^ 2-12a$

3 0

3 years ago

The Movie Haven is planning to order new medium-size popcorn containers. It has a choice of four different containers. It costs

murzikaleks [220]

Answer:

the answer is container c

b=11.14in2

12in

Step-by-step explanation:

6 0

4 years ago

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