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2 years ago

X + y = 6 2x + y = 4 Solve the system of equations.

Mathematics

2 answers:

Debora [2.8K]2 years ago

8 0

(X,Y) = (-2,8) this the answer

Shtirlitz [24]2 years ago

4 0

X,y= -2,8 i know you have the answer but i need to answer one so i can ask another question do i answered this one

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H 0 : μ ≥ 25 H 1 : μ < 25 Your sample consists of 28 subjects, with a mean of 23.2 and standard deviation of 8.6. Calculate t

kykrilka [37]

Answer:

The test statistic would be given by:

$t=\frac{\bar X-\mu_o}{\frac{s}{\sqrt{n}}}$ (1)

And replacing we got:

$t=\frac{23.2-25}{\frac{8.6}{\sqrt{28}}}=-1.11$

Step-by-step explanation:

Information given

$\bar X=23.6$ represent the sample mean

$s=8.6$ represent the sample standard deviation

$n=28$ sample size

$\mu_o =25$ represent the value that we want to test

t would represent the statistic

System of hypothesis

We want to test if the true mean is lower than 25, the system of hypothesis would be:

Null hypothesis: $\mu \geq 25$

Alternative hypothesis: $\mu < 25$

The test statistic would be given by:

$t=\frac{\bar X-\mu_o}{\frac{s}{\sqrt{n}}}$ (1)

And replacing we got:

$t=\frac{23.2-25}{\frac{8.6}{\sqrt{28}}}=-1.11$

7 0

2 years ago

Tim has contributed to Social Security over 30 years but has no other retirement plan. At age 50, should he start an IRA instead

choli [55]

Yes he should start an IRA

3 0

2 years ago

Way to factor the expression 32t – 48.

KiRa [710]

Answer:

(16) and (2t - 3)

Step-by-step explanation:

32t - 48

16 (2t - 3)

8 0

1 year ago

Read 2 more answers

Solve for x.<br><br> Please help quick!

dexar [7]

$\dfrac{5}{2} = \dfrac{x}{ \frac{1}{7} }$

Cross Multiply:
$2x = 5 \times \dfrac{1}{7}$

Evaluate right side:
$2x = \dfrac{5}{7}$

Divide by 2 on both sides:
$x = \dfrac{5}{7} \div 2$

Change the divide fractions to multiplication fraction:
$x = \dfrac{5}{7} \times \dfrac{1}{2}$

Combine into single fraction:
$x = \dfrac{5}{14}$

4 0

3 years ago

Each byte contains 8 bits of information. Write an equation to represent the relationship between the number of packets and the

shepuryov [24]

Answer:8p

Step-by-step explanation:

Because their is 8 bits so x equals 8p I got p because the other equation on the problem was b = 1500p so we still using the same variable so p is the variable so 8p is the answer

7 0

2 years ago