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
Nikitich [7]
3 years ago
14

How can we simplify the expression -(1-5n)-7n

Mathematics
1 answer:
dsp733 years ago
5 0
-(1-5n)-7n \\ \\ -1 + 5n - 7n \\ \\ -1 - 2n \\ \\ Answer: \fbox {-1 - 2n}
You might be interested in
The table shows how the number of cars, c, depends on the number people, t. How would you write this as an equation?
Nataly [62]

Answer:

t = 3c - 5

Step-by-step explanation:

The relation between c and t is linear as the increase of the value of t is uniform for each unit increase in the value of c.

Now, any two points on the graph of the t = f(c) equation are sufficient to determine the equation.

Let the points are (2,1) and (3,4).

So, using two points formula of straight line we get the equation is  

\frac{t - 4}{4 - 1} = \frac{c - 3}{3 - 2}

⇒ t - 4 = 3(c - 3)

⇒ t - 4 = 3c - 9

⇒ t = 3c - 5 (Answer)

6 0
3 years ago
A triangle has height 5 cm and base length 8 cm find it’s area
vodka [1.7K]

Answer:

A = 20 cm^2

Step-by-step explanation:

We can find the area of a triangle from

A = 1/2 bh

A = 1/2 8*5

A = 20 cm^2

4 0
3 years ago
The sum of three and seven times a number is -74. What is the number?
Dima020 [189]
<h3>♫ - - - - - - - - - - - - - - - ~Hello There!~ - - - - - - - - - - - - - - - ♫</h3>

➷ Form an equation with 'x' as the unknown number

7x + 3 = -74

Subtract 3 from both sides:

7x = -77

Divide both sides by 7:

x = -11

The number is -11

<h3><u>✽</u></h3>

➶ Hope This Helps You!

➶ Good Luck (:

➶ Have A Great Day ^-^

↬ ʜᴀɴɴᴀʜ ♡

7 0
3 years ago
Read 2 more answers
In a science class of twenty-eight students. 12 boys and girls. On a unit test, 4 boys and 10 girls made an A grade. A student i
Wewaii [24]

Answer:

Step-by-step explanation:

probability of choosing a boy = 12 / 28 = 3 / 7

in % = 3 / 7 x 100 = 42,86%

probability of choosing an a student = (4 + 10) / 28 = 14 / 28 = 1 / 2

in % = 1 / 2 x 100 = 50%

6 0
3 years ago
Yoo i need help with this stuff
romanna [79]
There are 1760 yards in a mile
2 miles = 3520 yards

he runs 80 yards per practice (4×20)
3520÷80= 44

he needs to do the practice 44 times.

--------------

There are 128 oz in a gallon
he brought two gallons, meaning 256 oz
each cup holds 8 oz

256 ÷ 8 = 32

he can serve 32 cups.
7 0
3 years ago
Other questions:
  • Can someone explain to me how I solve this problem. need íԵ as soon as possible. please help!❤️
    14·1 answer
  • Polygon C and polygon D are similar. The perimeter of polygon C is 60 inches, and the perimeter of polygon D is 12 inches. If on
    7·1 answer
  • 10
    7·1 answer
  • PLEASE HELP ASAP 10 POINTS AND BRAINLIEST Simplify. 1/4y + 1 1/2 + 2 - 1 3/4y−12
    8·1 answer
  • What is the value of X in the equation?
    9·2 answers
  • At a parking garage you can park underground or above ground. The lowest part of the underground parking is 40 feet below ground
    8·1 answer
  • So lonely have no friend
    7·1 answer
  • Cuanto es en total de 6000x1
    13·1 answer
  • Rachel worked 2.5 hours on Monday, 3.5 hours on Tuesday, 2 hours on Thursday and 5 hours on Saturday. She is paid $10.66 per hou
    11·1 answer
  • A gym has 65 members. If 35 are men and the
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!