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Dennis_Churaev [7]
3 years ago
5

What is the solution of x + y = 2 and 2x + 5y = 16?

Mathematics
2 answers:
olganol [36]3 years ago
8 0
Using elimination method....
I got y = 4 and x = -2
elena55 [62]3 years ago
5 0
Multiply the first equation by two to get 2x + 2y = 4. 
Subtract the second equation from the first equation to get -3y = -12

y = 4. 

Plug y back in to get x = -2. 
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Which number line model represents the expression -4+7.25
igor_vitrenko [27]

Answer: c

Step-by-step explanation: start at -4 then add 7 to that then .5

4 0
3 years ago
9. All quadrilaterals are parallelogram. A True B. False C. Maybe D. Sometimes cial kind of na lelogram because​
Vaselesa [24]

Answer:

B

Step-by-step explanation:

This statement is false because quadrilaterals just mean a polygon with 4 sides, but a parallelogram is a shape with two sides of opposite length. For example, a scalene quadrilateral has 4 sides, but none are the same length.

3 0
2 years ago
E probability of observing the experiment result, a sample mean, for example, or something more unusual just by chance if the nu
pentagon [3]

The probability of observing the experiment result, a sample mean, for example, or something more unusual just by chance if the null hypothesis is true is the definition of "P-Value."

<h3>What is null hypothesis?</h3>

A null hypothesis is a sort of statistical hypothesis which asserts that there is no statistical significance in a particular set of observations.

Using sample data, hypothesis testing is performed to determine the believability of a theory. It really is expressed as H0 and is also known to simply as "null."

Some key features regarding null hypothesis are-

  • A null hypothesis is a statistical conjecture that claims there is no variation between particular qualities of a population and data-generating process.
  • The alternate hypothesis asserts the existence of a distinction.
  • Hypothesis testing allows you to reject the null hypothesis with a particular level of confidence.
  • If the null hypothesis can be rejected, it lends support to the alternative hypothesis.
  • The notion of falsity in science is founded on null hypothesis testing.

To know more about null hypothesis, here

brainly.com/question/14016208

#SPJ4

8 0
2 years ago
(b) 5.2m + 5 = 2.9m – 3 – 4.1m
ohaa [14]

Answer:

m =-1.25

Step-by-step explanation:

5.2m + 5 = 2.9m – 3 – 4.1m

Combine like terms

5.2m + 5 = -1.2m – 3

Add 1.2m to each side

5.2m +1.2m +5 = -1.2m +1.2m -3

6.4m +5 = -3

Subtract 5 from each side

6.4m +5-5 = -3-5

6.4m = -8

Divide each side

6.4m/6.4 = -8/6.4

m =-1.25

7 0
3 years ago
How do you divide 50 by 60 and get 85
Ratling [72]

you cannot get that answer.... when you divide. Put the number into a fraction first so, it makes it easier to see what you are doing. So,\frac{50}{60}.Now simplify the cross off the zero from the top and the bottom to get\frac{5}{6}. So, \frac{5}{6} will give you 0.83333333333...3.
8 0
3 years ago
Read 2 more answers
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