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2 years ago

What is the value of 11x^-3 y^-1 for x=-1 and y=2

Mathematics

1 answer:

andrey2020 [161]2 years ago

3 0

Answer:

-11/2

Step-by-step explanation:

Put the numbers into the expression and do the arithmetic.

$11(-1)^{-3}2^{-1}=\dfrac{11}{(-1)^3}\cdot\dfrac{1}{2^1}=\dfrac{-11}{2}$

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Would 64, 32, and 24 inch perimeter make a triangle?

Harlamova29_29 [7]

Answer:

Step-by-step explanation:

the two smaller numbers added together need to be greater than or equal to the larger number

8 0

2 years ago

I need help with this ASAP plzzzzz

miss Akunina [59]

Answer:

23. $\frac{4\sqrt{3} }{3}$

24. $\frac{7\sqrt{3}}{3}$

25. $6\sqrt{3}$

26. $\frac{10\sqrt{3} }{3}$

27. $14$

28. $4\sqrt{3}$

Step-by-step explanation:

To solve these i used SOHCAHTOA

$sin=\frac{opposite}{adjacent}\\ cos=\frac{adjacent}{hypotenuse} \\tan=\frac{opposite}{adjacent}$

23.

Find the missing side using Tangent

$tan(30)=\frac{x}{4}$

$4*tan(30)=x$

$\frac{4\sqrt{3} }{3}$

24.

Find the missing side using Tangent

$tan(30)=\frac{x}{7}$

$7*tan(30)=x$

$\frac{7\sqrt{3}}{3}$

25.

Find the missing side using Tangent

$tan(30)=\frac{x}{18}$

$18*tan(30)=x$

$6\sqrt{3}$

26.

Find the missing side using Tangent

$tan(30)=\frac{x}{10}$

$10*tan(30)=x$

$\frac{10\sqrt{3} }{3}$

27.

Find the missing side using Tangent

$tan(30)=\frac{x}{14\sqrt{3} }$

$(14\sqrt{3}) *tan(30)=x$

$14$

28.

Find the missing side using Tangent

$tan(30)=\frac{x}{12}$

$12*tan(30)=x$

$4\sqrt{3}$

5 0

2 years ago

Select one of the factors of 5x2 + 7x + 2.

Dafna1 [17]

5x² + 5x + 2x + 2
5x(x + 1) + 2(x + 1)

(5x + 2)(x + 1)

6 0

2 years ago

Read 2 more answers

the ratio of an object's weight on earth to its weight on the moon is 6:1. the first person to walk on the moon was Neil Armstro

Greeley [361]

$\frac{165}{6} = 27.5 lbs$

8 0

2 years ago

Solve (x + 5)2 = 48.

natita [175]

Answer:

x = -5 ±4sqrt(3)

Step-by-step explanation:

(x + 5)^2 = 48

Take the square root of each side

sqrt((x + 5)^2) = ±sqrt(48)

x+5 = ±sqrt(16*3)

x+5 = ±4sqrt(3)

Subtract 5 from each side

x = -5 ±4sqrt(3)

7 0

2 years ago