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e-lub [12.9K]
3 years ago
8

The ordered pair (−3,−6) is a solution for the first equation, and it is a solution for the second equation. Therefore, (−3,−6)​

is a solution to the system of equations. ​−4x+y=65x−y=21​ true or false? HELP PLEASE I AM IN THE MIDDLE OF A QUIZ HELP!!!! ASAP
Mathematics
2 answers:
Alisiya [41]3 years ago
7 0
False. If x=-3 and y=-6 and you substitute them into the equation they do not add up

Olenka [21]3 years ago
3 0

Answer: False

I took the test. Hope you do well!!

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Help please!!!!!!!!!!!!!!!!!!!!!!!
Artist 52 [7]

9514 1404 393

Answer:

  a) $336

  b) $1036

Step-by-step explanation:

a) The interest is computed using the formula ...

  I = Prt

where P is the amount invested at rate r for t years.

  I = $700·0.08·6 = $336

The interest earned is $336.

__

b) The balance of the account is the sum of the original amount and the interest earned:

  balance = $700 +336 = $1036

The balance of the account is $1036.

5 0
3 years ago
Graph the equation y=3/5x on the coordinate plane
Alexus [3.1K]
I know it says instant mirror don't worry about that.

8 0
3 years ago
N divided by 8 in an algebraic expresion? plz help fast
Dmitriy789 [7]
N and 8 in an algebraic expression would be N/8 hope this helps you.


7 0
3 years ago
Read 2 more answers
The square of a number minus three times a number equals<br> negative two.
lidiya [134]

Answer:

The number is either 2 or 1

Step-by-step explanation:

Where x is the unknown number, the square of may be interpreted as x², then the  square of the number minus three times the number will be equivalent to

x² - 3x

If this is equal to 2 then

x² - 3x = -2

such that

x² - 3x + 2 = 0

This may be solved using factorization of quadratic equation

x² - 2x -x + 2 = 0

x(x - 2) -1(x- 2) = 0

(x -2)(x-1) = 0

x = 2 or 1

8 0
3 years ago
After a ham is cured it may be smoked to add flavor or to ensure it lasts longer. Typical grocery-store hams are smoked for a sh
Elza [17]

Answer:

107

Step-by-step explanation:

Given that after a ham is cured it may be smoked to add flavor or to ensure it lasts longer.

Let X be the smoking time . Then X is N(mu, 8)

a) The sample is drawn at random

b) The sample represents the population

c) Sample size is sufficient to represent the population

b)For 99% conf interval z critical is taken since population std dev is given

Z critical = 2.58

Hence confi interval = (\mu+/- 2.58*\frac{\sigma}{\sqrt{n} } \\=(\mu +/- 2.58\frac{8}{6} )\\= (\mu -3.44, \mu+3.44)

c) As sample sizes are large and samples are randomly drawn, we can be 99% confident that sample mean falls within this interval

d) If margin of error is only 2, then we must have

2.58*\frac{8}{\sqrt{n} } =2\\10.32=\sqrt{n} \\n=106.50\\n~107

3 0
3 years ago
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