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
g100num [7]
3 years ago
5

A person's email for one day contained a total of 78 messages. The number of spam

Mathematics
1 answer:
andriy [413]3 years ago
8 0

Answer:

62 of the email messages were spam

Step-by-step explanation:

Let the number of spam and other messages be s and o respectively.

Total number of messages= 78

s +o= 78 -----(1)

s= 4o -2 -----(2)

Substitute (2) into (1):

4o -2 +o= 78

<em>Simplify:</em>

5o -2= 78

<em>+</em><em>2</em><em> </em><em>on </em><em>both </em><em>sides:</em>

5o= 78 +2

5o= 80

<em>Divide </em><em>both </em><em>sides </em><em>by </em><em>5</em><em>:</em>

o= 80 ÷5

o= 16

Since s +o= 78, s= 78 -o.

s= 78 -16

s= 62

You might be interested in
Find the equation of the line passing through the point (2,-4) that is parallel to the line y=3x+2​
4vir4ik [10]

Answer:

y=3x-10

Step-by-step explanation:

gradient to the line y=3x+2 is same as that of the line passing through the point (2,-4)

gradient=3

( {y-(-4)}/{x-2} )=3

apply cross multiplication and the equation will be:y=3x-10

8 0
3 years ago
Chuck-E-Cheese is open for 11 ½ hours during a day. The arcade keeps one employee in charge of games at a time. Each shift is 3
zhuklara [117]

Answer:

3 complete shifts

Step-by-step explanation:

Simple division!

11.5 / 3.75 =

3.066 --> 3

<u>Consider Brainliest! Hope I helped!</u>

4 0
3 years ago
Read 2 more answers
A comet is estimated to be about 960,000,000 km from Earth. Write this distance in scientific notation. [?] × 10 km Enter 13​
Kitty [74]

Answer:

(9*10^{9})( 6*10^{8}) or 9.6×10^8

Step-by-step explanation:

The answer is written above.

Hope this helps!

6 0
2 years ago
Read 2 more answers
HELPPPPPPPPPPPPPPPPPPPPPPP I"LLLL GIVE FIVE STAARS AND BRAINLIEST!!!!!!!!!!!!!!!
ollegr [7]

Answer:

c. f(n) = (n+1)^2 + 2

Step-by-step explanation:

It is c. because...

f(n) = (1+1)^2 + 2

        2^2 + 2

        4 + 2 = 6 (first term)

f(n) = (2+1)^2 + 2

        3^2 + 2

        9 + 2 = 11 (second term)

f(n) = (3+1)^2 + 2

        4^2 + 2

        16 + 2 = 18 (third term)

3 0
3 years ago
9. Solve the system by substitution. (1 poin
shtirl [24]

Answer:

i feel bad theyre making you do this

but its the last O

Step-by-step explanation:

7 0
3 years ago
Other questions:
  • When a decimal is written in word form, what indicates that the equivalent form is a mixed number and not a fraction?
    12·1 answer
  • Hannah jogs and walks for 48 minutes everyday. She spends 3 times as many minutes jogging as she does walking. How many minutes
    6·1 answer
  • the best player on a basketball team makes 75% of all free throws. The second best makes 70% of all free throws, and the third-b
    10·1 answer
  • A student theater charges $9:50 per ticket. The theater has already sold 70 tickets. Write and solve an inequality that represen
    5·1 answer
  • Find the vertex of the parabol whose equatio is y =3x^2+6x+1
    7·1 answer
  • In △ABC, AB=8, BC=10, and AC=12. Let M, N, and K be the midpoints of the sides of △ABC. Find length of each side of △MNK.
    11·1 answer
  • the rational roots of a polynomial function f(x) can be written in the form p/q where p is a factor of the leading corfficient o
    15·1 answer
  • Please I neeed help
    5·2 answers
  • 30 POINTS AND BRAINLIEST PLS HELP
    9·2 answers
  • Carlos buys a vintage automobile for $7300. He estimates that the value will increase by 3% every year. Estimate the value of th
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!