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
Bezzdna [24]
3 years ago
6

Which ordered pair is the solution to the system of equations?

Mathematics
1 answer:
Contact [7]3 years ago
5 0
\left \{ {{2x+y=-8} \atop {x-y=-4}} \right. \\+----\\\\3x=-12\ \ \ \ |:3\\x=-4\\\\-4-y=-4\\-4+4=y\\y=0\\\\Answer\ D(-4,0)
You might be interested in
We wish to construct a 90% confidence interval on the mean of a population known to be normally distributed based on a sample of
sergiy2304 [10]

Answer:

Margin of error = 0.773

Step-by-step explanation:

We are given the following information in the question.

Sample size, n = 20

Sample mean = 8

Sample standard deviation = 2

90% Confidence interval

\bar{x} \pm t_{critical}\displaystyle\frac{s}{\sqrt{n}}  

Putting the values, we get,  

t_{critical}\text{ at degree of freedom 19 and}~\alpha_{0.10} = \pm 1.729  

Margin of error:

t_{critical}\displaystyle\frac{s}{\sqrt{n}}  

Putting the values, we get,  

1.729(\frac{2}{\sqrt{20}} ) = 0.773  

7 0
3 years ago
The length of one edge of a cube is 3 units. What is the volume of this cube in cubic units
devlian [24]

Answer:

27 cubic units

Step-by-step explanation:

A cube has equal dimensions. So the volume is 3units × 3units × 3units or 27cubic units

3 0
3 years ago
Quadrilateral ABCD is an isosceles trapezoid. If || , AB = m + 6, CD = 3m + 2, BC = 3m, and AD = 7m – 16, solve for m.
pashok25 [27]

Answer:

m=2

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
What do you call -6 and 6
Oduvanchick [21]
The first one is negative six and the second one is positive six
5 0
3 years ago
Read 2 more answers
Which best describes the end behavior of y=7x^2?
denpristay [2]
<span>As x > 0 increases, f(x) increases. As x < 0 decreases, f(x) increases.</span>
7 0
3 years ago
Read 2 more answers
Other questions:
  • Ali was reviewing his family video. the tape totaled 2 hours and 37 minutes. video of his children totaled 72 minutes. how much
    14·2 answers
  • which choice is the equation of a line that passed through the point (-2,8) and is perpendicular to the line represented by this
    8·1 answer
  • Help me with 5 please! Thanks and show work :)
    15·1 answer
  • When you combine equal groups you can
    12·1 answer
  • What is the equivalent expression 9(2a+1)
    15·2 answers
  • Write y = 2x^2 + 8x + 3 in vertex form.
    12·1 answer
  • Write the equation of the line in slope-intercept form using y=mx+b​
    9·2 answers
  • Hazhair bought 2 DVDs for $12.95 each. He spent $25 on magazines. Did he spend more on DVDs or magazines? How much more? Write e
    10·1 answer
  • You write (5-2)÷n to represent the phrase 2 less than 5 divided by a number n. Your friend writes (5÷n)-2. Are these both reason
    14·1 answer
  • What is the standard form equation of an ellipse that has vertices (−2,−18) and (−2,8) and foci (−2,−14) and (−2,4)?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!