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
mezya [45]
3 years ago
5

Help please! find m∠bcf

Mathematics
2 answers:
LUCKY_DIMON [66]3 years ago
6 0

Answer:

m<BCF=140°

Step-by-step explanation:

first find m<BCD

m<BCD=180-50-90

m<BCD=40°.

to find m<BCF, we can do 180-m<BCD, since m<BCD and m<BCF add up to 180° (they form a straight angle)

180-m<BCD=m<BCF

180-40=m<BCF

m<BCF=140°

77julia77 [94]3 years ago
5 0

Answer:

BCF = 140°

See attached image.

You might be interested in
Yo if u need an bralest i got chu
dybincka [34]

Answer:

PLease

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Please solve the following complex number system ASAP, show work and please simplify fully.
Illusion [34]

Answer:

x= 16±√-64 over 2

Step-by-step explanation:

x= -(-16)±√(-16)²-4×1×80 over 2×1

x= 16±√256-320 over 2

x= 16±√-64 over 2

can also be represented with all real numbers.

7 0
3 years ago
Hey can you please help me posted picture of question
Kamila [148]
A polynomial is defined as a collection of variables and constant terms combined by various mathematical operations. The exponents of the variables in a polynomials must be non-negative integers.

If you observe the given options, one of the option (option B) contains a negative exponent. Hence the expression in option B is not a polynomial.
5 0
3 years ago
There is concern that increased industrialization may be increasing the mineral content of river water. Ten years ago, the silic
Tema [17]

Answer:

a) P value = 0.0013

b) No, it is not plausible that the silicon content of the water is no greater than it was 10 years ago

Step-by-step explanation:

The null hypothesis here is “Mean is equal to 5” while alternate hypothesis is that “Mean is greater than 5”

Given  

Mean = 5, x’ = 5.4 and sigma = 1.2 and n = 85

Z = x-u’/sigma/sqrt n

Substituting the given values, we get –  

Z = 3.02

A) P value = 0.0013 which is less than 0.05 and thus we will reject the null hypothesis

B) There is enough evidence to reject the null hypothesis  

6 0
3 years ago
Roberto wants to display 18 sports cards in an album. Some pages hold 2 cards and others hold 3 cards. How many different ways c
guajiro [1.7K]

Answer: The answer is 2.

HOPE IT HELPS!!

5 0
3 years ago
Other questions:
  • In which of the following ways are linear systems similar to quadratic systems? Select all that apply.
    9·2 answers
  • The cost C , in £, of a monthly phone contract is made up of the fixed line rental L , in £, and the price P , in £ ,of the call
    8·1 answer
  • On a scale drawing of a fence, 3.75 inches represents 12 feet. Estimate the actual length of a second fence that is 2.8 in the d
    14·1 answer
  • I need to model 2 equivalent fractions for 6 fifths
    6·1 answer
  • Simplify the expression where possible <br> (4c^2)^3
    10·1 answer
  • Ms. Peterson wrote the expression below on the chalkboard for her class. She asked the students to write an equivalent expressio
    7·2 answers
  • Fill in the blank to make the fractions equivalent 2/3 = Blank/15
    7·1 answer
  • HELP ASAP I WILL GIVE BRAINLIST
    5·1 answer
  • HELP ME FAST ASAP
    5·1 answer
  • A recipe calls for 2/3 cup of butter to make 2 1/2 cups of sauce. What would be the amount of butter needed to make 10 cups of s
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!