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
Serggg [28]
1 year ago
7

SOMEONE PLEASE HELP!

Mathematics
1 answer:
Andrews [41]1 year ago
7 0

Answer:

17.2°

Explanations

To find angle A, use the cosine rule.

a^2 = b^2 + c^2 - 2 × a × c cos A

4^2 = 7^2 + 10^2 - 2 × 7 × 10 cos A

16 = 49+ 100 - 140 × cosA

16 = 149 - 140cosA

16- 149 = - 140cosA

-133 = - 140cosA

cosA = 133/140

cosA = 0.95

A = 17.2°

You might be interested in
4x-5y=13
love history [14]
Hello : 
<span>4x-5y=13...(1)
x+5y=-3...(2)
(1)+(2) : 5x = 10
x=2
subsct in (2) : 2+5y = -3
5y =-5
y = -1

</span>
8 0
3 years ago
What is the value of y when x = 5 in the equation y = 5x?
kiruha [24]
Y = 5x

x = 5

y = 5(5)

y = 25
4 0
3 years ago
Ralph notice that there were 15 girls and 10 boys in his math class. What is the relationship between the number of boys and gir
Firdavs [7]
Equivalent ratios are 15:10 and 3:2.
7 0
2 years ago
A circle with its dimensions, in meters (m), is shown.
vesna_86 [32]

Answer:

84.78

Step-by-step explanation:

also if you dont mind giving me brainliest im trying to rank up, im 1 away. only if u dont mind

4 0
2 years ago
Please help ! It’s for a test and I don’t get it !
solmaris [256]
Answer: (-3,6)

First you minus 2 from x to get -1
Then you minus 1 from y to get 2

Then multiply both by three to get
(-3,6)
7 0
3 years ago
Other questions:
  • What steps would you take to compare 2 kilograms and 3,200 grams m
    13·2 answers
  • What is the value of x?
    10·1 answer
  • What is 63 over 75 as a decimal?
    8·1 answer
  • How to rewrite 8 in exponential notation using 2 as the base
    7·2 answers
  • Will give brainliest!!!! worth lots of ponts plzz anser i need this !!!!!
    7·2 answers
  • If you Start with $10 in the bank and each month you add $20 which line equation will give you your total amount after X months?
    11·1 answer
  • Slope-intercept form of Slope = -9/5, y-intercept = -4
    6·1 answer
  • Please help. this is due in 10 min (image)
    13·1 answer
  • HI HELP ME W MATH PLSS!!
    9·1 answer
  • Find the measure of the missing angle
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!