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
dimulka [17.4K]
3 years ago
14

In triangle ABC angle A=45 angle B =40 and a=7.Which equation should you solve to find b?

Mathematics
1 answer:
coldgirl [10]3 years ago
3 0

We have been given that in triangle ABC angle A=45 angle B =40 and a=7. We are asked to find the equation that we can use to solve for 'f'.

We have two angles and opposite sides to these angles.

We will use Law of Sines to solve our given problem.

\frac{a}{\sin(A)}=\frac{b}{\sin(B)}=\frac{c}{\sin(C)}, where a, b and c are opposite sides corresponding to angles A, B, and C respectively.

The angle opposite to side b is 40 degrees and angle opposite to side a is 45 degrees.

Upon substituting these values in Law of Sines, we will get:

\frac{7}{\sin(45^{\circ})}=\frac{b}{\sin(40^{\circ})}

Therefore, our required equation would be \frac{7}{\sin(45^{\circ})}=\frac{b}{\sin(40^{\circ})}.

You might be interested in
Coral spent half of her weekly allowance playing mini-golf. To earn more money her parents let her wash the car for $4. What is
Juliette [100K]
X=weekly allowance
x/2=money saved  (=  money spent).
We can suggest this equation:

x/2+4=12

lowest common multiple=2
x+8=24
x=24-8
x=16

Answer: her weekly allowance is $16.
7 0
2 years ago
Solve for x<br> C. 120<br> 2x<br> 3x<br> D. (2x+6)<br> X<br> 126
brilliants [131]

Answer:

x=32

Step-by-step explanation:

i took the test

4 0
2 years ago
Multiply 2(x+3)/x(x-1)*4x(x+2)/10(x+3)
KIM [24]

Answer:

The expression simplifies to \frac{4(x+2)}{5(x-1)}.

Step-by-step explanation:

The expression

\frac{2(x+3)}{x(x-1)} *\frac{4x(x+2)}{10(x+3)}

can be rearranged and written as

\frac{8x(x+3)(x+2)}{10x(x-1)(x+3)}.

In this form the (x+3) terms in the numerator and in the denominator cancel to give

\frac{8x(x+2)}{10x(x-1)}.

The x's are present both in the numerator and in the denominator, so they also cancel, and the fraction \frac{8}{10} simplifies to \frac{4}{5}, so finally our expression becomes:

\boxed{\frac{4(x+2)}{5(x-1)}}

Which is our answer:)

6 0
3 years ago
Help pls haha also Merry Christmas
MArishka [77]

Answer:

x = √39

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

Equality Properties

<u>Trigonometry</u>

  • [Right Triangles Only] Pythagorean Theorem: a² + b² = c²

Step-by-step explanation:

<u>Step 1: Identify</u>

Leg <em>a</em> = <em>x</em>

Leg <em>b</em> = 5

Hypotenuse <em>c</em> = 8

<u>Step 2: Solve for </u><em><u>x</u></em>

  1. Substitute [PT]:                     x² + 5² = 8²
  2. Isolate <em>x</em> term:                       x² = 8² - 5²
  3. Exponents:                            x² = 64 - 25
  4. Subtract:                               x² = 39
  5. Isolate <em>x</em>:                               x = √39
3 0
3 years ago
Read 2 more answers
Prove your work what is 1/12 of a dozen Branliest
a_sh-v [17]

Answer:

1/12 of a dozen is 1

Step-by-step explanation:

One dozen means 12. If you ask for 1/12 of 12, you multiply 12 and 1/12. You should get 1 as your answer.

4 0
3 years ago
Read 2 more answers
Other questions:
  • At a private​ school, each​ first-year student is sorted into one of four houses. If 3 students are randomly selected from 11 av
    6·1 answer
  • I need help with this question
    15·2 answers
  • (7, 5) and (-3, 4) written in slope intercept form
    11·1 answer
  • The list shows numbers in order from least to greatest.
    10·1 answer
  • Given that ∠Ф = 180°, determine the numerical value of this function.
    5·1 answer
  • What is the value of x?
    9·1 answer
  • What is the distance between ( 0,5 ) , ( -3,-4)​
    7·1 answer
  • You’re working at a theater where you are evaluating attendance at several events. From the first event to the second event, att
    8·1 answer
  • Assume that an investment of $7000 earns an APR of 6% compounded monthly for 18 months.
    12·1 answer
  • Ashley's chocolate bar is 58% cocoa. If the weight of the chocolate bar is 57 grams, how many grams of cocoa does it contain? Ro
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!