1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
BARSIC [14]
3 years ago
11

Can someone help me PLS

Mathematics
2 answers:
jolli1 [7]3 years ago
8 0

Answer:

Step-by-step explanation:

2^2=1.75^2+3^2-2*3*1.75cos x

4=3.0625+9-10.5 cosx

10.5cos x=9-4+3.0625

10.5cosx=8.0625

cos x= 8.0625/10.5≈0.77

x≈40 degrees

Reptile [31]3 years ago
5 0

Answer:  D) 40 degrees

<u>Step-by-step explanation:</u>

Let  A = θ

then a = 2       b = 3     c = 1.75

Use the Law of Cosines:

a² = b² + c² - 2bc · cos A

2² = 3² + 1.75² - 2(3)(1.75) · cos θ

4 = 9 + 3.0625 - 10.5 cos θ

4 = 12.0625 - 10.5 cos θ

-8.0625 = -10.5 cos θ

\dfrac{-8.0625}{-10.5}=\cos \theta\\\\\\\cos^{-1}\bigg(\dfrac{-8.0625}{-10.5}\bigg)=\theta\\\\\\\large\boxed{39.838=\theta}

You might be interested in
Jenny has 63 grapes to put in a fruit salad but she only wants to add 40% of them to the Bowl how many grapes does she use for t
crimeas [40]
You multiply 63  by .40
You get 25.2, so 25 grapes
7 0
3 years ago
Read 2 more answers
1/3 of ___ is 1/27<br> please help asap
tekilochka [14]

Answer:

1/9 use inverse.

Step-by-step explanation:

this is because you can use inversem since the word "of" indicates multiplication divide 1/27 and 1/3 and you get 1/3

3 0
2 years ago
7900 dollars is placed in an account with an annual interest rate of 5.5%. How much will be in the account after 11 years?
My name is Ann [436]

Answer:

\$12,679.50

Step-by-step explanation:

we know that

The simple interest formula is equal to

A=P(1+rt)

where

A is the Final Investment Value

P is the Principal amount of money to be invested

r is the rate of interest  

t is Number of Time Periods

in this problem we have

t=11\ years\\ P=\$7,900\\ A=?\\r=5.5\%=5.5/100=0.055

substitute in the formula above

A=7,900(1+0.055*11)

A=7,900(1.605)

A=\$12,679.50

6 0
3 years ago
Given the points A(-10, -4) and B(14, 4), find the coordinates of the point P on the directed line segment AB that partitions AB
anastassius [24]

Answer:

P(5, 1)

Step-by-step explanation:

Segment AB is to be partitioned in a ratio of 5:3. That means the ratio of the lengths of AP to PB is 5:3. We need to find the ratio of the lengths of AP to AB.

AP/PB = 5/3

By algebra:

PB/AP = 3/5

By a rule of proportions:

(PB + AP)/AP = (3 + 5)/5

PB + AP = AP + PB = AB

AB/AP = 8/5

AP/AB = 5/8

The first part of the segment is 5/8 of the length of the segment, and the second part of the segment has length of 3/8 of the length of segment AB.

Point P is located 5/8 of the distance from point A to point B. The x-coordinate of point P is 5/8 of the difference in x-coordinates added to the x-coordinate of point A. The y-coordinate of point P is 5/8 of the difference in y-coordinates added to the y-coordinate of point A.

x-coordinate:

difference in coordinates: |14 - (-10)| = |14 + 10| = 24

5/8 of 24 = 5/8 * 24 = 15

Add 15 to the x-coordinate of point A: -10 + 15 = 5

x-coordinate of point P: 5

y-coordinate:

difference in coordinates: |4 - (-4)| = |4 + 4| = 8

5/8 of 8 = 5/8 * 8 = 5

Add 5 to the y-coordinate of point A: -4 + 5 = 1

y-coordinate of point P: 1

Answer: P(5, 1)

3 0
3 years ago
If 5x - 2y = 6 and 3x + 2y = 10, then find x​
Darina [25.2K]

Answer:

x=2

Step-by-step explanation:

After solving with substitution, you would know x = 2

5 0
3 years ago
Read 2 more answers
Other questions:
  • Given the function f(x) = 5x, Section A is from x = 0 to x = 1 and Section B is from x = 2 to x = 3.
    11·1 answer
  • Which is the equation of a line perpendicular to the line with the equation:<br>y = 1/4x + 2​
    15·1 answer
  • Find X.<br><br> A) 3<br><br> B) 4<br><br> C) 5<br><br> D)6
    6·2 answers
  • Help again pleaseeeeeeejshfhfuuffufuf
    12·1 answer
  • I need help ASAP , so what’s the answer
    12·1 answer
  • Please help with my math assignment! Simplify, write the expression using only positive exponents.​
    12·1 answer
  • If u found a briefcase, and the ammount of money was your phone #, how much money did u find?
    13·1 answer
  • The following data points represents how many tunnels Gary the groundhog dug each year. 18,5,13,9,6,2,10 using the data to creat
    12·1 answer
  • Pleaseee helpppppp!!!
    14·2 answers
  • A boat is 10 miles away from a lighthouse that sits on top of a coral reef with a 4 mile radius. At what angle does the captain
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!