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
Natali5045456 [20]
3 years ago
13

I need help on these please ! only 27, 29, 31,

Mathematics
2 answers:
DIA [1.3K]3 years ago
8 0

27. 6(10+n)=6.10+6.n

29. 5.x+5.7=5(x+7)

31. 10t+10.3=10(t+3)

muminat3 years ago
5 0

27 is 6

29 is 70

31 is 60

those are all of the answers.

You might be interested in
4/5 x 1/8 as a simplified expression and product by dividing the numerator and denominator by GCF
irina1246 [14]

Answer:

⅘×⅛ = 1/10

Step-by-step explanation:

3 0
3 years ago
What is the solution of the system of equations? -y+3x=6 y=-6x+12
irinina [24]

Answer:

x = 2

y = 0

Step-by-step explanation:

We can solve using substitution, substitute y in the first equation with the second equation:

-(-6x + 12) + 3x = 6

Distribute the negative sign:

6x - 12 + 3x = 6

Combine like terms:

9x - 12 = 6

Isolate the variable and solve for x by adding 12 in both sides:

9x = 18

x = 2

Substitute 2 with x in any equation to find the value of y:

-y + 3(2) = 6

-y + 6 = 6

Subtract 6 in both sides to isolate the variable:

-y = 0

0/-1 = 0

y = 0

Our answer would be x = 2 and y = 0

8 0
3 years ago
Read 2 more answers
What is the value of (2x^2-5x+4)if x =7
Troyanec [42]
<span>We have to use PEMDAS for this expression.

Parentheses
Exponents
Multiplication
Division
Addition
Subtraction

</span>(2x^2 - 5x + 4)                    Original Mathematical Expression

[2(7)^2 - 5(7) + 4]                 Plugging the value of x, 7 into expression.

There are parentheses, so that means we have to work in them.

There are exponents, so we have to do those first.

[2(49) - 5(7) +4]                    Exponents.

There is multiplication, that we can do, so we do that left to right.

[98 - 35 + 4]                         Multiplication.

There is no division.

There is addition and subtraction, so we do those left to right.

[63 + 4]                                Subtraction.

67                                        Addition.

Final Answer: 67

6 0
3 years ago
Read 2 more answers
HELPP!!! Will give Brainliest!!!
Pavel [41]

the local maximum is at x = -2.2 and has a value of 72.576


6 0
3 years ago
Which of the following expressions is equal to 3x^2 + 27
Kisachek [45]
Factor: 
3x^2 + 27
= 3(x^2  + 9)
Answer is 3(x^2 + 9), when factored.


A) (3x + 9i)(x + 3i)
= (3x + 9i)(x + 3i)
= (3x)(x) + (3x)(3i) + (9i)(x) + (9i)(3i)
= 3x^2 + 9ix + 9ix + 27i^2
= 27i^2 + 18ix + 3x^2



B) (3x - 9i)(x + 3i)
= (3x +  - 9i)(x + 3i)
= (3x)(x) + (3x)(3i) + ( - 9i)(x) + (- 9i)(3i)
= 3x^2 + 9ix - 9ix - 27i^2
= 27i^2 + 3x^2


C) (3x - 6i)(x + 21i)
= (3x +  - 6i)(x + 21i)
= (3x)(x) + (3x)(21i) + (- 6i)(x) + ( -6i)(21i)
= 3x^2 + 63ix - 6ix - 126i^2
=  - 126i^2 + 57ix + 3x^2






D) (3x - 9i)(x - 3i)
=  (3x +   - 9)(x +  - 3)
= (3x)(x) + (3x)( - 3i) + (- 9)(x) + ( - 9)( - 3i)
= 3x^2 - 9ix - 9x + 27i
= 9ix + 3x^2 + 27i - 9x









Hope that helps!!!

8 0
3 years ago
Read 2 more answers
Other questions:
  • Mark has collected 114 baseball cards from both the national league and American League. His collection has twice the number of
    15·1 answer
  • What is the whole number of 7/2?
    14·2 answers
  • Which quadratic equation is equivalent to (x+2)^2+5(x+2)-6=0
    7·2 answers
  • Find the average velocity of the function over the given interval 2+tan x[-pi/4
    10·1 answer
  • GameStop has the Xbox One advertised for 15% off the original price of $350, plus 6% sales tax. Online Xbox One is advertised at
    7·1 answer
  • Use the equation 15% = 10% + 5% to find a 15% tip on a bill of $14.85. (Round the bill to the nearest dollar before finding the
    13·1 answer
  • I will give brainliest !!!! (15 points) i will report!!
    14·2 answers
  • Please please help! exam and I only have IO minutes left
    6·1 answer
  • Whoever answers I’ll mark brainliest
    10·1 answer
  • How many combinations of powerball numbers are there
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!