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Firlakuza [10]
3 years ago
9

I NEED HELP with problems 4,6,and 8

Mathematics
2 answers:
Snezhnost [94]3 years ago
7 0
#4
1 mile = 5280 ft'
2 miles = 5280 * 2 =10,560 ft

#6
1 quart = 2 pints
2 3/4 = 2.75 quarts = 2.75 * 2 = 5.5 pints

#8
1 yard = 3ft

40ft = 40/3 = 13.33 yards
Monica [59]3 years ago
6 0
2) 32 
4) 10560
6)5.5.......................
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Given $dc = 7$, $cb = 8$, $ab = \frac{1}{4}ad$, and $ed = \frac{4}{5}ad$, find $fc$. Express your answer as a decimal.
Pachacha [2.7K]

A ↔ B ↔ C ↔ D ↔ E ↔ F

 \frac{1}{4} AD      8      7      \frac{4}{5} AD   ???

AB + BC + CD = AD   <em>segment addition postulate</em>

\frac{1}{4} AD   +   8   +   7   = AD

\frac{1}{4} AD   +       15        = AD

AD         + 60    = 4AD

                  60    = 3AD

                  20    = AD

AB =  \frac{1}{4} AD    =  \frac{1}{4}(20)    = 5

DE =  \frac{4}{5}AD   =  \frac{4}{5}(5)    = 4

CD + DE + EF = CF   <em>segment addition postulate</em>

7   +   4   + EF  = CF

     11        + EF  = CF

Answer: 11 + EF

Note: You did not provide any info about EF.  If you have additional information that you did not type in, calculate EF and add it to 11 to find the length of CF.

7 0
3 years ago
Read 2 more answers
PLZZ could someone help me out with this and explain
jenyasd209 [6]

Answer:

It would be D because X^2 is different from 3x you would just multiply X^2 by 1 and 3x by 1 to get x^2+3x

3 0
3 years ago
Read 2 more answers
Answer all parts in the question below. Be sure to show all your work. Remember NO WORK, NO CREDIT EVEN IF THE ANSWER IS CORRECT
liraira [26]

I'm sorry I need the points lol anyways I hope you got the answer to it

3 0
3 years ago
What is the sum of the first 47 terms of the sequence? -215, -201, -187, -173, ...​
Andru [333]

Answer:

5029

Step-by-step explanation:

There is a common difference between consecutive terms, that is

d = - 201 - (- 215) = - 187 - (- 201) = - 173 - (- 187) = 14

This indicates the sequence is arithmetic with sum to n term

=  [ 2a₁ + (n - 1)d ]

where a₁ is the first term and d the common difference

Here a₁ = - 215 and d = 14 , then

=  [ (2 × - 215) + (46 × 14) ]

    = 23.5 (- 430 + 644)

   = 23.5 × 214

   = 5029

6 0
2 years ago
PLEASE HELP ME WITH THIS! ASAP!!!!!!!
marusya05 [52]

Hold on i believe its C but let me go look on google and i'll get back to you to sure

3 0
3 years ago
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