Need help fast. Pre Calc

Let |a| = 12 at an angle of 25° and |b| = 7 at an angle of 105°. What is the magnitude of a + b? Round to the nearest decimal.

A) 12.8
B) 14.9
C) 15.4
D) 17.3

Answers

Answer 1

Answer:

15.4 on edge. C

Step-by-step explanation:

Answer 2

Answer:

The other person is correct.


Related Questions

James wants to buy some CDs that cost $14 each and a DVD that costs $23. He has $65. Write an equation (in the Show your work area) and solve to find how many CDs he can buy. Include "CD" in your answer.

Answers

Answer:

3

Step-by-step explanation:

65-23= 42

42/14= 3

Answer:

14x+23 =65 x=3CDs

Step-by-step explanation:

So for any question where you need to write your own equation, it is first necessary that you determine what each number in the problem means in order to determine where they should go. James has $65 so the equation needs to be set equal to 65. The problem says he wants to buy a DVD for $23 so that would be a constant $23 spent regardsless of how many CDs he buys. We are trying to use the equation to determine how many CDs James can buy so the number of CDs is the x value at $14 each which would be 14x in the equation. so the equation would be the 14x for the unknown number of CDs, plus 23 for the constant DVD that James would buy set equal to the $65 he can use to buy everything.

To solve the equation, you must now isolate for x. To start, cancel out the +23 on the left side by subtracting 23 from both sides. This will leave 14x=42. You must then cancel the 14 by dividing both sides by 14 leaving your answer of x=3CDs.

I hope this helps.

Cna anyone help with this one for me? I’ll give 5 stars

Answers

Answer:

D

Step-by-step explanation:

The answer would be C 3d + 8 is less than or equal to 35.

The tank holds no more than 35, so there can be 35 fish in the tank so it can be equal to 35.

there is already 8 fish from the old aquarium and there are 3 new fish per day so the 3 gets the variable

Cody's Cafe uses 1 7/10 bags of coffee every day. How many days will 6 4/5 bags of coffee last?

Answers

Answer:

64/5 bags=128/17 days

Step-by-step explanation:

soln:

given,

17/10 bags=1 day

64/5 bags= ?

we know,

1 bag=10/15 day

so,

64/5 bags=10/15*64/5

•°•64/5 bags=128/17 days

Solve for x: x3 = 512 Your answer may be a whole number or a fraction.

Answers

Answer:

x=8

Step-by-Step Explanation:

View provided picture

If segment RT bisects ∡QRS, m∡QRT = 5x – 9 and m∡SRT = 2x + 33, find m∡SR

Answers

Answer:

61 degrees

Step-by-step explanation:

m∡QRT=m∡SRT

5x – 9=2x + 33

3x=42

x=14

∡SRT=2x+33

∡SRT=2(14)+33

∡SRT=28+33

∡SRT = 61

1/10 of blank is 8. PLEASE HELP ASAP!!! WILL MARK BRAINILEST

Answers

Answer:

80

Step-by-step explanation:

Reverse it too, 8 divided by 1/10, which is 80.

PLZZ HELPP IM FAILLING THIS CLASS

Answers

Answer:

Hope this helps!!! :)

Step-by-step explanation:

#1: if there is buy 1 get 1 free, then buy 6 get 3 free. so 2.8 times 3 = $8.4

#2: 4 for $3. break it up to 1 for $0.75. now 0.75 times 6 = $4.5

#3: the second one. $4.5 < $8.4

#4: 45 times 12 = $54

Find the length of the segment with endpoints
K(0,2) and V(9,14).
A. 21
B. 15
C. 12
D. 9

Answers

Answer:

C

Step-by-step explanation:


Y-3 = -(x-2)
in slope intercept form. Please show work.

Answers

Answer:
Y=-x+5

Write in slope-intercept form,
y=mx+b

What is the value of x in the figure shown below?

Answers

Answer: 100 degress

Step-by-step explanation:

35+65=100

180-100

Angle = 80 degrees

x=100

If OB= 2x+1 and
BR = 3x-10 then OR=

Answers

OB + BR = OR (because the line would go O, B, R and OR encompasses the whole thing with B in the middle.
So 2x + 1 (OB) + 3x -10 (BR) = OR
2x + 1 + 3x -10 = OR
(Simplify)
5x - 9 = OR

Whats a good nickname for my friend David?
Don't say "Dave" , Dav, or any other like couple names/NO plz

Give me a nickname for just friends

Answers

Answer:

My causins name is David but we also call him davy

84x + 12y = 9,612
1126x + 21y = 13,643
{126
I
X=
Y=

Answers

Answer:

Hello you are a b**ch

Step-by-step explanation:

I just want some points thanks.

The population of rabbits on an island is growing exponentially. In the year 1994, the population of rabbits was 9600, and by 2000 the population had grown to 18400. Predict the population of rabbits in the year 2009, to the nearest whole number.

Answers

Answer:

49243

Step-by-step explanation:

Given that the population of rabbits on an island is growing exponentially.

Let the population, [tex]P=P_0e^{bt}[/tex]

where, [tex]P_0[/tex] and b are constants, t=(Current year -1994) is the time in years from 1994.

In 1994, t=0, the population of rabbit, P=9600, so

[tex]9600=P_0e^{b\times 0}[/tex]

So, [tex]P_0=9600[/tex]

and in 2000, t=2000-1994=6 years and population of the rabbit, P=18400

[tex]18400=9600 \times e^{b\times 6} \\\\\frac{18400}{9600}=e^{b\times 6} \\\\[/tex]

[tex]\ln(23/12}=6b \\\\[/tex]

[tex]b = \frac{\ln{1.92}}{6} \\\\[/tex]

b=0.109

On putting the value of P_0 and b, the population of the rabbit after t years from 1994 is

[tex]P=9600 \times e^{0.109\times t}[/tex]

In 2009, t= 2009-1994=15 years,

So, the population of the rabbit in 2009

[tex]P=9600 \times e^{0.109\times 15}=49243[/tex]

Hence, the population of the rabbit in 2009 is 49243.

Can someone help me on this! plz help me and tell me how u got the answer.
and plz dont troll.....

Answers

Answer: The last choice, 2x + 3y = 10

Step-by-step explanation: This equation will have the same slope. The line will be parallel to the original side , just higher up on the grid.

HELP HELP HELP HELP

Solve the inequality.
2(4+2x)>5x+5
O x<-2
O x>-2
O x<3
O x>3

Answers

Answer: -7

Step-by-step explanation: .........................

A travel agency is planning for a holiday for
a a group
of people. The agency receives quotations
from two coach companies. Maya Express and
Great Holidays. Maya Express charges $15 for
each person while Great Holidays charges a
fixed amount of $84 and an extra of $12 per
person. If the total amount charged by each
company is the same, find the number of
people going on the holiday.

Answers

Answer:

so it 15

Step-by-step explanation:

please help me so i dont fail

Answers

I think it would the last one G
It is the second one

The relationships for Paul's and Steve's height with respect to Theresa's height are described above. First you will write expressions for Paul's height and for Steve's height. Then you will relate the expressions.

Answers

Answer:

They are tall, im not sure

I need help with this question. Thank you so much!

Answers

Pretty sure it’s going to be D.

Answer:

D. -5

Step-by-step explanation:

-77.4=9a
I need to solve for a. Can someone help me?

Answers

A= -8.6 Hope this helps!

What's the mean median and range of 7, 1, 1, 7, 1, 4, 1??

Answers

Answer:

Mean is 3, median is 1, and range is 6

Step-by-step explanation:

Im a smart dude with a great attitude

In a theater showing a cartoon movie, 13 out of 17 people watching are children. How many children would you predict are watching the movie if there are 204 people in the theater?

Answers

Answer:

102 childs

Step-by-step explanation:

a store sells gift cards in preset amounts. you can purchase gift cards for $20 from chipotle and $30 from panera. you spent $440 of gift cards. write an equation in standard form to represent this situation

Answers

Answer:

a = Panera

b = Chipote

a(20) + B(30) = 440

Step-by-step explanation:

helllllllllllllllllllllpppppppppppp meeeeeeeeeeeeee

Answers

Answer: I think the answer is x = 4

Step-by-step explanation: 28 = 7x

                                           /7       /7

                                             4   =  x

Pls help someone my brain is about to explode

Answers

Answer:

It has to be the third option.

Happy to help :)

A triangle formed by the sides 3.8cm ,3.7 cm, and 5cm is​

Answers

It is a scalene triangle because none of the sides are the same!

By the Pythagoras theorem we know that the if the square of the longest side of the triangle is equal to the sum of the square of other two sides.

The triangle formed by the sides 3.8 cm ,3.7 cm, and 5 cm is​ acute angle triangle.

How to find the type of triangle?

By the Pythagoras theorem we know that the if the square of the longest side of the triangle is equal to the sum of the square of other two sides. Thus,

For a triangle to be right angle triangle,

           [tex]c^2=a^2+b^2[/tex]

       By this law it is observed that,

For a triangle to be acute angle triangle,

         [tex]c^2<(a^2+b^2)[/tex]

For a triangle to be obtuse angle triangle,        

        [tex]c^2>(a^2+b^2)[/tex]

The sides of the given triangle are  3.8 cm ,3.7 cm, and 5 cm.

Here the longest side is 5 cm. Thus check the type of triangle using above formula. Longest side,

[tex]c^2=5^2\\c^2=25[/tex]

Other two sides,

[tex]a^2+b^2=3.8^2+3.7^2\\a^2+b^2=14.44+13.69\\a^2+b^2=28.13[/tex]

Therefore,

[tex]25<28.13\\[/tex]

Hence the triangle formed by the sides 3.8 cm ,3.7 cm, and 5 cm is​ acute angle triangle.

Learn more about the type of triangle here;

https://brainly.com/question/2644832

How many solutions does the following equation have?
4(5 - 2v) =4 - 8(v-2)
2)
(A) 1 solution
(B) No solutions
(C) Infinite Solutions

Answers

ANSWER

C. Infinite Solutions

Explanation- graph/plug in the two equations into a graphing calculator ( desmos is a good app )

Pls, it’s for a test , ;< . I Wanna actually Get a good grade. PLS HELP you will get 20 points


Solve y3 = 27.


A. y = 5.2
B. y = 9
C. y = 3
D. y = 3 y= 3

Answers

Answer: B. y=9
Explanation: divide both sides of the equation by three
y3/3 = y
27/3=9
y=9
hope this helps:)

Answer:

The answer is y=3

Convert the following fractions to decimals.

Help me plz

Answers

Answer:

1

Step-by-step explanation:

You just divide the top number by the bottom number to get the decimal
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