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Firdavs [7]
3 years ago
9

1. Evaluate each expression when x = -2 and y = 3.

Mathematics
1 answer:
borishaifa [10]3 years ago
5 0
a) 3(-2) + 4(3) = -6 + 12 = 6

b) 2(-2) -3(3) +5 = -4 -9 + 5 = -8

c) 4(-2) -(3) = -8 -3 = -11

d) -(-2) -2(3) = 4 -6 = -2

e) (1/2)(-2) +(3) = -1 +3 = 2

f) (2/3)(3) -(1/2)(-2) = 2 + 1 = 3
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Solve for x 2/3 + 3/5x = x+5/10<br> x = –3<br> x = 2<br> x = –3 and x = 2<br> No Solution
KengaRu [80]

Answer:

c

Step-by-step explanation:

x = –3 and x = 2

4 0
3 years ago
Does anyone know the answer to these two questions? thank you.
tamaranim1 [39]

Problem 24

Part 1

\displaystyle \int \csc(x)\left(\sin(x)+\cot(x)\right)dx\\\\\displaystyle \int \frac{1}{\sin(x)}\left(\sin(x)+\frac{\cos(x)}{\sin(x)}\right)dx\\\\\displaystyle \int \frac{1}{\sin(x)}*\sin(x)+\frac{1}{\sin(x)}*\frac{\cos(x)}{\sin(x)}dx\\\\\displaystyle \int 1+\frac{\cos(x)}{\sin^2(x)}dx\\\\\displaystyle \int 1 dx+\int \frac{\cos(x)}{\sin^2(x)}dx\\\\\displaystyle x+C_1+\int \frac{1}{u^2}du \ \text{ ... where } u = \sin(x)\\\\\displaystyle x+C_1+\int u^{-2}du\\\\

Part 2

\displaystyle x+C_1+\frac{1}{1+(-2)}u^{-2+1}+C_2\\\\\displaystyle x+C_1+\frac{1}{-1}u^{-1}+C_2\\\\\displaystyle x+C_1-u^{-1}+C_2\\\\\displaystyle x+C_1-\frac{1}{u}+C_2\\\\\displaystyle x+C_1-\frac{1}{\sin(x)}+C_2\\\\\displaystyle x-\frac{1}{\sin(x)}+C_1+C_2\\\\\displaystyle x-\frac{1}{\sin(x)}+C\\\\\displaystyle x-\csc(x)+C\\\\

<h3>Answer:  x - csc(x) + C</h3>

Don't forget about the plus C constant

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

Problem 26

Fortunately, there aren't as many steps for this problem.

\displaystyle \int \frac{dy}{\csc(y)}\\\\\displaystyle \int \frac{1}{\csc(y)}dy\\\\\displaystyle \int \sin(y)dy\\\\\displaystyle -\cos(y)+C\\\\

<h3>Answer:  -cos(y)  + C</h3>
6 0
3 years ago
Ben has 100.00 in his savings account. He wants to save more money. He is looking at two investment plans. Under Plan A, he will
SashulF [63]

Answer:

The correct answer is   104.55

Step-by-step explanation:

From the given information we can write,

Principle amount = 100

<u>To find the amount after 10 years in plan A</u>

Now total = 100

Under plan A increase his account balance by 20.00 per year

Amount increased = 10 *20 = 200

Total = 100 + 200 = 300

<u>To find the amount after 10 years in plan B</u>

Total = 100

Amount after 10 yeras = 100[1 + 15/100]¹⁰

= 100 * 1.15¹⁰ = 100 * 4.04 = 404.55

<u>To find the difference</u>

Difference = 404.55 - 300

= 104.55

The correct answer is   104.55

3 0
3 years ago
A desk is 39 inches wide. What is the width in yards
Stolb23 [73]

Answer:

1.0833 yd

Step-by-step explanation:

Inches    Yards

37"         1.0278 yd

38"         1.0556 yd

39"         1.0833 yd

40"         1.1111 yd

Have a great day! :D

4 0
3 years ago
If A = (8, 2) B = (11, 13) and C = (2, 6), classify the the following triangle as either right or isosceles
schepotkina [342]
Draw it out and you might find the answer or find the slopes of each line
3 0
4 years ago
Read 2 more answers
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