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Mathematics

2 answers:

Ivan3 years ago

7 0

Y = -2x - 3
Y = -2 + 5

-2x - 3 = 2x + 5

x= -2

y= -2 x (-2) -3

y= 1

( x, y) = (-2, 1)

The answer is (-2, 1)

olganol [36]3 years ago

4 0

Answer:

at first , you need the sum of both equations . It will be like :

2y= 0 + 2

Y=1

_____

now that you know the value of Y , place it in the one of the equation that you like , forexample i place it in the second equation and find out that the value of x is ( -3/2)

1= 2X+5

-4=2X

X= -2

Hope it helps , good luck ^.^

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Which of the following demonstrates the Distributive Property?

Lunna [17]

The answer would be "<span>3(4a + 2) = 12a + 6". With the distributive property, the number outside of the parenthesis is multiplied to each component inside the parenthesis individually. Ex: 3x4a=12a, 3x2=6.</span>

5 0

3 years ago

A report states that the mean yearly salary offer for students graduating with a degree in accounting is $48,734. Suppose that a

DENIUS [597]

Solution :

To claim to be tested is whether "the mean salary is higher than 48,734".

i.e. μ > 48,734

Therefore the null and the alternative hypothesis are

$H_0 : \mu = 48,734$

and $H_1 : \mu > 48,734$

Here, n = 50

$\bar x = 49,830$

s = 3600

We take , α = 0.05

The test statistics t is given by

$t=\frac{\bar x - \mu}{\frac{s}{\sqrt n}}$

$t=\frac{49,830 - 48,734}{\frac{3600}{\sqrt 50}}$

t = 2.15

Now the ">" sign in the $H_1$ sign indicates that the right tailed test

Now degree of freedom, df = n - 1

= 50 - 1

= 49

Therefore, the p value = 0.02

The observed p value is less than α = 0.05, therefore we reject $H_0$ . Hence the mean salary that the accounting graduates are offered from the university is more than the average salary of 48,734 dollar.