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
shusha [124]
3 years ago
7

Please help me with this:(

Mathematics
1 answer:
dolphi86 [110]3 years ago
5 0

Answer:

Y = 32.7°

Step-by-step explanation:

We will apply the Cosine law in the given triangle XYZ,

x = 90 ft

y = 55 ft

z = 50 ft

We have to find the measure of angle Y.

y² = x² + z² - 2xzCosY

(55)² = (90)² + (50)² - 2(90)(50)cosY

3025 = 8100 + 2500 - 9000.cosY

9000.cosY = 10600 - 3025

cosY = \frac{7575}{9000}

        = 0.84167

Y = \text{cos}^{-1}(0.84167)

Y = 32.68 ≈ 32.7°

Therefore, measure of angle Y = 32.7°

You might be interested in
Please help this is difficult
Sloan [31]

Answer:

iv answered this question for you already in the other one

Step-by-step explanation:

hope you have a good day

4 0
2 years ago
HELP MEEEEEEE! BTW ITS PERCENTAGES! THE IMAGES ARE DOWN BELOW AND THIS IS DUE AT 7:00
lara31 [8.8K]

Answer:

Hi, there your answers are:

29. 42=0.42

30.75=0.75

31. 8=0.08

32.5=0.05

33. percent=7% Decimal=0.07

34.percent=40% Decimal= 0.4

35. percent=90% Decimal=0.9

36. Decimal=0 Fraction= 0/100 or 0/10

37. Decimal=0.08 Fraction=8/100

38. Decimal = 0.33 Fraction= 33/100

39. Decimal= 0.74 Fraction=74/100

40. Decimal= 1% Fraction= 1/1 or 100/100

Hope this Helps :)

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
The access code for a cars security system consist of four digits the first digit cannot be 1 and the last digit must be odd how
Katena32 [7]
So we have 10 numbers 0 - 9 
0 1 2 3 4 5 6 7 8 9 
The first digit cannot be 1
therefore there are 9 possibilities 
0 2 3 4 5 6 7 8 9 

digits 2 and 3 can be numbers 0 through 9
therefore there are 10 possibilities for digits 2 and 3 
digits 2 and 3 are a total of 2 digits
and the last digit must be odd so there are 5 possibilities -> 1 3 5 7 9 
so 
9 * 10^2 * 5 => 9 * 100 * 5 => 45* 100 = 45,000
 codes available

6 0
3 years ago
Evaluate this expression 33+(-5)-(-70)-26
SVETLANKA909090 [29]

Answer:

82

Step-by-step explanation:

33 + (-5) - (-70) - 26

33 - 5 + 70 - 26

- and - = +

- and + = -

+ and - = -

33 -5 = 28

28 + 70 = 108

108 - 26 = 82

8 0
3 years ago
*FIRST ANSWER GETS BRAINLIEST*
svet-max [94.6K]

The other solution to the equation is -3.

Step-by-step explanation:

Given equation is;

5x²+bx+12=0

One solution is -4/5

We will put this solution in Eqn to get the value of b first,

5(\frac{-4}{5})^2+b(\frac{-4}{5})+12=0\\5(\frac{16}{25})+(\frac{-4b}{5})+12=0\\\frac{16}{5}-\frac{-4b}{5}=-12\\

Multiplying each term by 5

5*(\frac{16}{5})-\frac{-4b}{5}*5=-12*5\\16-4b=-60\\-4b=-60-16\\-4b=-76

Dividing both sides by -4

\frac{-4b}{-4}=\frac{-76}{-4}\\b=19

Putting b=19 in given Eqn

5x²+19x+12=0

Here,

a=5 , b=19 , c=12

Using quadratic formula,

x=\frac{-b\±\sqrt{b^2-4ac}}{2a}\\x=\frac{-(19)\±\sqrt{(19)^2-4(5)(12)}}{2(5)}\\\\x=\frac{-19\±\sqrt{361-240}}{10}\\\\x=\frac{-19\±11}{10}\\

Either,                   or,

x=\frac{-19+11}{10},\ \ \ \ \ \ x=\frac{-19-11}{10}\\x=\frac{-8}{10},\ \ \ \ \ \ \ \ \ x=\frac{-30}{10}\\x=\frac{-4}{5},\ \ \ \ \ \ \ \ \ \ x= -3

The other solution to the equation is -3.

Keywords: linear equation, quadratic formula

Learn more about quadratic formula at:

  • brainly.com/question/7128279
  • brainly.com/question/6788996

#LearnwithBrainly

6 0
3 years ago
Other questions:
  • 1
    14·1 answer
  • A cereal box has dimensions of 10 1/2 inches by 7 1/2 inches by 2 1/2
    14·2 answers
  • Find the solution (in explicit form) for the following initial value problem:    y 0 = xy3 (1 + x 2 ) − 1 2 y(0) = 1.
    10·1 answer
  • Subtract 8 + 7i from 4 − 16i.
    10·2 answers
  • Use the Pythagorean theorem to find the length, to the nearest tenth, of segment LM. You must graph the segments and show all wo
    6·1 answer
  • What is the range of the following function
    8·1 answer
  • F(x) = 0.54<br> g(x) = f(x + k)<br> for k=-2
    5·1 answer
  • Can someone help me with this problem? 8z when z =12 Evaluating Expressions
    8·2 answers
  • Can some help meeeeeeeee?
    13·1 answer
  • HELP ASAP PLEASE!!
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!