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
Setler [38]
3 years ago
12

ERROR ANALYSIS Describe the error in solving for one of the variables in the linear system 5x – 7y = 16 and x + 7y=8.

Mathematics
1 answer:
kompoz [17]3 years ago
7 0

Answer:

The expression 5x+x does not equal 4x

X=4

You might be interested in
There are 84 girls in grade 3.the boys are twice the numbers of girls. how many pupils are there in all in grade 3?draw a diagra
krok68 [10]

Answer: 252

Step-by-step explanation:

You just multiply 84 by two and then ad another 84.

6 0
3 years ago
Help me please!!!
34kurt

Step-by-step explanation:

sin(2x) + cos(3x)

Use double angle formula sin(2x) = 2 sin x cos x.

Use triple angle formula cos(3x) = 4 cos³x − 3 cos x.

Substitute:

2 sin x cos x + 4 cos³x − 3 cos x

3 0
3 years ago
Is the expression 9(−4x−3) equivalent to the expression −36x−27.?
LekaFEV [45]

Answer:

No they are not equivilant. −36x−27 = 972 & 9(−4x−3) = 108.

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
The mass of Earth is about 6 X 1024
storchak [24]

Answer:

81

Step-by-step explanation:

To do "how many times greater" problems, you divide.  Think how you would answer this:  How many times greater is 48 than 6?  Dividing the larger 48 by the smaller 6 gives 8.  48 is 8 times greater than 6.

Do the same thing for these two masses.

6 x 10^24 divided by 7.4 x 10^22 is about 81.

The attached image shows a TI-83 display.

7 0
3 years ago
4-4x-9x how many terms
11Alexandr11 [23.1K]

Answer:

3 terms

Step-by-step explanation:

4 4x and 9x

5 0
3 years ago
Other questions:
  • The measure of an angle is 63.6°. what is the measure of a complementary angle
    15·2 answers
  • Which graph best represents the function f(x)= -1/2e^x-1
    10·1 answer
  • What is the variable for -7.8 = 4.4 + 2r
    15·1 answer
  • Write 5% as a fraction and as a decimal.
    7·2 answers
  • What is the value of the product (4 - 21)(6 + 2/)?<br> 20 - 41<br> 20 + 161<br> 28 + 161<br> 28 - 41
    15·1 answer
  • How many different 2-digit numbers are there with the following property: the tenth digit is greater than the units digit?
    14·1 answer
  • What is 3+16-2×0+1 ?
    5·1 answer
  • If this correct too? Sorry if I ask again, I feel kinda insecure.
    11·1 answer
  • Transformation is given as (x, y) -&gt;x + 3, y + 6), Find the
    8·1 answer
  • X^2-18x+209=2x+11 i can't solve it
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!