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
kogti [31]
3 years ago
12

9r-5r+2+r ????????? Pls help me

Mathematics
1 answer:
Oksanka [162]3 years ago
6 0

Answer:

5r + 2

Step-by-step explanation:

9r-5r+2+r=5r+2

\mathrm{Group\:like\:terms}

=9r-5r+r+2

\mathrm{Add\:similar\:elements:}\:9r-5r+r=5r

=5r+2

You might be interested in
Write three different ways for7/10
HACTEHA [7]
The only ways i thought of was 0.7, 0.70, and 0.700 .
7 0
3 years ago
Read 2 more answers
If the sales tax in your city is 6.1%, and an item costs $167
Sloan [31]
Total tax is $10.19, so the total price would be $177.19
8 0
3 years ago
The height of the sail on a boat is 7 feet less than 3 times the length of its base. If the
xxTIMURxx [149]

Answer:

Base=8 feet

Height=17 feet

Step-by-step explanation:

Let

Base=x

Height=3x-7

Area=68 square feet

Area of the sail boat=1/2 * base * height

68 = 1/2 * x * (3x-7)

Cross product

68 * 2 =(1) * (x) * (3x-7)

136 = 3x^2 - 7x

3x^2 - 7x - 136=0

Using quadratic formula

x= -b +or- √b^2 - 4ac / 2a

= -(-7) +or- √(-7)^2 - (4)(3)(-136) / 2(3)

= 7 +or- √49 - (-1632) / 6

= 7 +or- √49+1632) / 6

= 7 +or- √1681 / 6

=7 +or- 41 /6

x= 7+41 / 6 or 7-41 / 6

=48/6 or -34/6

=8 or -17/3

Answer:

Step-by-step explanation:

Let

Base=x

Height=3x-7

Area=68 square feet

Area of the sail boat=1/2 * base * height

68 = 1/2 * x * (3x-7)

Cross product

68 * 2 =(1) * (x) * (3x-7)

136 = 3x^2 - 7x

3x^2 - 7x - 136=0

Base of the boat can't be a negative value

Therefore,

Base = x = 8 feet

Height= 3x-7

=3(8)-7

=24-7

=17 feet

3 0
3 years ago
A rope is divided into three pieces. One piece is 3 inches longer than the shortest piece and 5 inches shorter than the longest
Elza [17]
They are each 18.2 try that I think it’s what it is
7 0
4 years ago
Read 2 more answers
A store has 80 modems in its inventory, 30 coming from Source A and the remainder from Source B. Of the modems from Source A, 20
RUDIKE [14]

Answer:

0.102

Step-by-step explanation:

The number of defective modems in the inventory is 20% * 30 + 8% * 0.50 =10 (out of 80)

Note that the number of defectives in the inventory is fixed i.e. we are told that there is 1/8 probability that a modem in the inventory is defective, but rather that exactly 1/8 of all modems are defective.

The probability that exactly two modems in a random sample of five are defective is :

(10↓2)(70↓3) / (80↓5) = 0.102

7 0
3 years ago
Other questions:
  • Simplify as far as possible without a calculator.<br> (7+2√2)(7−2√2)
    14·1 answer
  • 4b - 2 =6<br> Show step by step how to solve and check (giving 10 points)
    5·2 answers
  • Plz help! will mark brainliest
    11·2 answers
  • In 2016, a billionaire's net worth was approximately $3.6 x 109. That same year, it
    6·1 answer
  • Help please. max points i can do
    15·2 answers
  • Terry has 15 candles. She needs at least 100 candles. The candles she wants are sold in boxes of 8. What is the least number of
    6·2 answers
  • If x = 12 and y = 3, what is the value<br> of |-x + 5y|?
    6·1 answer
  • . Please HELP me WITH this EQUATION ; A triangle has two base angles of 35º and another angle of 110º. Select any words which ac
    9·1 answer
  • PLS HELP 50 POINTS!!
    8·2 answers
  • Show that P = 6x + 2
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!