Solve 2sinx^2-5sinx-3=0

Answers

Answer 1

Answer:

3

Step-by-step explanation:

The answer my Math 4 teacher gave me. :) work with it


Related Questions

Emily took 300 US dollars to the bank to exchange it for Canadian dollars. The exchange rate on that day was 1.25 Canadian dollars per one US dollar. How many Ganadian dollars did she receive for 300 US dollars?

Answers

Emily wanted to exchange her 300 US Dollars for Canadian Dollars.

The exchange rate for it was 1.25 Canadian Dollars for 1 US Dollar.

This means that 1 US Dollar = 1.25 Canadian Dollars.

So if we were to follow this pattern,

2 US Dollars = 2 × 1.25 = 2.5 Canadian Dollars

3 US Dollars = 3 × 1.25 = 3.75 Canadian Dollars

4 US Dollars = 4 × 1.25 = 5 Canadian Dollars

So for 300 US Dollars, we'll need to multiply 300 by 1.25.

300 US Dollars = 300 × 1.25 = 375 Canadian Dollars.

Hope it helps. :)

Simplify the expression:
a (-8a^2 + 2a + 4) +3 (ba^2 - 4)

Answers

Answer:

4 a + 2 a^2 - 8 a^3 + 3 a^2 b - 12

Step-by-step explanation:

Simplify the following:

3 (b a^2 - 4) + a (-8 a^2 + 2 a + 4)

Hint: | Distribute a over -8 a^2 + 2 a + 4.

a (-8 a^2 + 2 a + 4) = -8 a^3 + 2 a^2 + 4 a:

-8 a^3 + 2 a^2 + 4 a + 3 (b a^2 - 4)

Hint: | Distribute 3 over a^2 b - 4.

3 (a^2 b - 4) = 3 a^2 b - 12:

Answer: 4 a + 2 a^2 - 8 a^3 + 3 a^2 b - 12

I need this ASAP, please

A. The table represents a function because each element in the range is associated with exactly one element in the domain.

B. The table does not represent a function because each element in the domain is associated with exactly one element in the range.

C. The table represents a function because each input has exactly one output.

D. The table does not represent a function because each output does not have exactly one input.

Answers

The answer would be c

Victor bought a Nintendo Game Boy that cost $68. He received $32 in change.
Write and solve an equation to find the amount of money Victor used to buy the Game Boy.

Answers

68+32=100 he used a $100 bill

Solve for y 3) 2y + 4x = 8​

Answers

Answer:

Step-by-step explanation:

y

=

4

2

x

an elevator is currently 16.9 feet off the ground. If it ascends 32.35 feet, then descends 7.8 feet, how far off the ground is the elevator?

Answers

Answer:

40.64 feet

Step-by-step explanation:

In a​ survey, 400 people were asked to choose one card out of five cards labeled 1 to 5. The results are shown in the table. Compare the theoretical probability and experimental probability of choosing a card with the number 3.

Number 1 2 3 4 5
Frequency 32 96 128 112 32

Answers

Answer:

The value of the experimental probability is greater

Step-by-step explanation:

For the theoretical probability;

the probability that a card with the number 3 is selected is 1/5

We consider that the probabilities of each selection are equal, for the theoretical probability

For the experimental, we simply place the frequency of the selection 3 over the total

that will be 128/400 = 8/25

As we know that 8/25 is greater than 1/5

We can conclude that the value of the experimental probability is greater than that of the theoretical

Answer:

I hate math

Step-by-step explanation:

PLEASE HELP IF POSSIBLE :)

Answers

Answer:

JM = 20

Step-by-step explanation:

Find the value of JM

Using similar triangles;

MJ/HN = GJ/HK

GJ+JM/HN = GJ/HK

15+JM/12+16 = 15/12

15+JM/28 = 15/12

Cross multiply

12(15+JM) = 15*28

180+12JM = 420

12JM = 420 - 180

12JM = 240

JM = 240/12

JM = 20

Hence the length of JM is 20

Which expression shows the result of applying the distributive property to −2(1/3x−1/5)?


2/3x−2/5

2/3x+2/5

−2/3x−2/5

−2/3x+2/5

Answers

Answer:

Its C

Step-by-step explanation:

:D

Brody's family took a road trip to Niagara Falls. Brody slept through the last 6% of the trip. If the total length of the trip was 300 miles, how many miles had they travelled when Brody fell asleep?

Answers

Answer:

18 miles

Step-by-step explanation:

6% of 300 miles is 18 miles

draw a number line and make ticks that are 1cm apart from-6 to7​

Answers

from left side of the line to the right, with even spaces in between: -6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7

“Deme cambio de un dolar, por favor” dijo el cliente llamado Bob.
– “Lo siento” dijo la señorita Jones, la cajera, después de buscar cuidadosamente en la caja, “pero no puedo hacerlo con las monedas que tengo”.
– “¿Puede entonces cambiarme medio dolar?”. La señorita Jones negó con la cabeza. En realidad, dijo, “¡ni siquiera tengo para cambiar ni veinticinco, ni diez, ni cinco centavos!”
– “¿No tiene ninguna moneda?” preguntó Bob.
– “Oh, sí” dijo la señorita Jones, “tengo $1.15 en monedas”.

¿Cuáles eran exactamente las monedas que había en la caja registradora? Razona la respuesta.

Answers

Answer:

Give me change for a dollar, please" said the customer named Bob. - "I'm sorry," said Miss Jones, the cashier, after carefully searching the box, "but I can't do it with the coins I have." - "Can you then change half a dollar?" Miss Jones shook her head. Actually, he said, "I don't even have a quarter, a dime, or a nickel to change!" - "You don't have any coins?" asked Bob. - "Oh yes" said Miss Jones, "I have $ 1.15 in coins." What exactly were the coins in the cash register? Reason for the answer.

Step-by-step explanation:

Answer:

medio dólar, cuarto de cuatro dimes || half dollar, quarter four dimes

Solve these equations.

|x+8|=x+8

PLS, I NEED HELP NOW!!!

Answers

Answer:

x = -8

Step-by-step explanation:

In the figure below, m∠1 = x and m∠2 = x - 8. Which statement could be used to prove that x = 49?

Answers

Answer:

see explanation

Step-by-step explanation:

∠ 1 + ∠ 2 = 90, that is

x + x - 8 = 90

2x - 8 = 90 ( add 8 to both sides )

2x = 98 ( divide both sides by 2 )

x = 49

Savannah's cat weighs 9 pounds. Savannah's dog weighs 4 3/4 times as much as her cat. How much does Savannah's dog weigh?

Answers

Answer:

42.75 pounds

i think :))

Step-by-step explanation:

Common factors of 27 and 54

Answers

Answer:

4

Step-by-step explanation:

4

Answer:

Step-by-step explanation:

Factors for 27: 1, 3, 9, and 27 Factors for 54: 1, 2, 3, 6, 9, 18, 27, and 54

so common factors are 1, 3,9 and 27

Charles and Jaden share a reward of $63 in a ratio of 2:5. How much does Jaden
get?

Answers

Answer:

9

Step-by-step explanation:

2:5=7

therefore Jaden got 63÷7

=9

The process of producing pain-reliever tablets yields tablets with varying amounts of the active ingredient. It is claimed that the average amount of active ingredient per tablet is at least 200 milligrams. The Consumer Watchdog Bureau tests a random sample of 70 tablets. The mean content of the active ingredient for this sample is 194.3 milligrams, while the standard deviation is 21 milligrams. What is the approximate p-value for the appropriate test

Answers

Answer:

p = 0.0116

Step-by-step explanation:

We are given;

Population mean; μ = 200 mg

Sample mean; x¯ = 194.3 mg

Standard deviation; σ = 21 mg

Sample size; n = 70

Formula for z-score is;

z = (x¯ - μ)/(σ/(√n))

z = (194.3 - 200)/(21/√70)

z = -5.7/2.51

z = -2.27

From the z-score table attached, the p-value at z = -2.27 is p = 0.0116

1. Christina drew a scale model of an Olympic-size swimming pool using a
scale in which 3 centimeters represents 10 meters. If the length of the
pool in her drawing is 15 centimeters, what is the length of the actual
pool?
4,5 m
D 150 m

Answers

Answer: 4,5

Step-by-step explanation:

The actual length of the Olympic-size swimming pool which is drawn by Christina on the scale model is 50 meters.

What is scale factor?

Scale factor is the factor which is used to enlarge or smaller the original figure.

Scale factor is the ratio of representation measurement of the figure to the original figures.

Christina drew a scale model of an Olympic-size swimming pool using a scale in which 3 centimeters represents 10 meters.

Thus, the scale factor is for cm to m,

[tex]r=\dfrac{3}{10}\rm[/tex]

The length of the pool in her drawing is 15 centimeters. Let the length of the actual pool is x cm. Thus,

[tex]\dfrac{15}{x}=\dfrac{3}{10}\\x=50\rm \; m[/tex]

Thus, the actual length of the Olympic-size swimming pool which is drawn by Christina on the scale model is 50 meters.

Learn more about the scale factor here;

https://brainly.com/question/10253650

Write the equation of the line that passes through the points (3, -2)
and (5, -9). Put your answer in fully reduced point-slope form,
unless it is a vertical or horizontal line.

Answers

start with determining the slope ((-9 - (-2))/(5 - 3) = -7/2. Now use the point slope formula y - y1 = m(x - x1). y - (-2) = -7/2(x - 3). Distribute the -7/2, y + 2= -7/2x + 21/2. Combine like terms y = -7/2x + 17/2. You can also write this as y = -3.5x + 8.5

Each cube inside the rectangular prism has an edge length of (3)/(4) inch. What is the volume of the rectangular

Answers

It should 12 and count the sides and add it

Please help me!!!!!!!!!!!!!!!!!

Answers

it’s (-1,-2) , and minimum
The answer is C, (-1,-2)maximum

Find the area. Simplify your answer.
x+1
2x

Answers

Answer:

[tex]A = x^{2} + x[/tex]

Step-by-step explanation:

Area of a triangle = bh/2

Your base is 2x and the height is x + 1

So, A = (2x)(x + 1)/2

        A = [tex]x^{2} + x[/tex]

hi please help i’ll give brainliest please

Answers

Answer:

4

Step-by-step explanation:

15y = 60

60 / 15 = 4

Answer:

Y=4

Step-by-step explanation:

60/15=4

therefore y=4

I need help Please thank u

A plate is considered a major plate if it covers an area of more than _____________ Kilometers

A - 40,000,000km2

B - 2,000km2

C - 200,000,000km2

D - 20,000,000km2​

Answers

Answer: I think it could be A but I could be wrong‍♀️

im literally about to smash this computer pelase somebody HELPEEPPEPEPEPP

Answers

Answer:

33920 or 530 im not 100% sure

i think sorry if im wrong

Step-by-step explanation:

Parallel lines and tranvsveral

Answers

Answer:

66°

Step-by-step explanation:

simply subtract 114 from 180

you'll come out with the answer of 66°.

117
X
x + 3
Find the value of x.
A. 4
В. 5
C. 6
D. 9

Answers

Answers:

1. D po

Step-by-step explanation:

i hope its hepl

Predict whether the product is greater than, less than, or equal to
2/3
. Then find the product.

2/3 × 1 3/5

Answers

1 10/18 simplify before putting the answer

Whats 9*20(10+20) First Answer Gets Brainliest

Answers

Answer:

Your answer would be 5400.

Step-by-step explanation:

You have to follow PEMDAS for this one. You will start within the parenthesis and add 10 and 20 together to get 30. You would then times that by 20 and get 600. Finally, you would mulitply that by 9 and get 5400 as your answer..

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