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balandron [24]
3 years ago
12

Two Identical lines are graft below how many solutions are there to the system of equations?

Mathematics
1 answer:
irga5000 [103]3 years ago
3 0
There's no graph ... ?
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Sonja [21]

Answer:

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HELP ME ASAP! Will give BRAINLIEST! Please read the question THEN answer correctly! No guessing. Check ALL that apply.
lozanna [386]

There are 0 x intercepts for this equation.

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3 years ago
The mean number of children among a sample of 15 low-income households is 2.8. The mean number of children among a sample of 19
gtnhenbr [62]

Answer:

Step-by-step explanation:

Let's put the data as below:

n1=15    x1=2.8      s1=1.6       and s1²=2.56

n2=19   x2=2.4     s2=1.7        and s2²=2.89

alpha= 0.05

To test the hypothesis:

H0= There is no sufficient evidence that low income household have fewer children

H1=There is sufficient evidence that low income household have fewer children

Assume that population variances are equal.

the t-static for two samples,

t=\frac{x1-x2}{Sp\sqrt{\frac{1}{n1}-\frac{1}{n2} \\} } } ~t with min (n1-1,n2-1)df

The pooled variance estimate Sp equals:

Sp^{2}=\frac{(n1-1)s1^{2}+(n2-1)s2^{2}  }{n1+n2-2}

Sp²=2.7456

Sp=1.65699

Degrees of freedom=n1+n2-2=32

Under null hypothesis:

tcal=\frac{|2.8 - 2.4|}{1.6599\sqrt{\frac{1}{15}+\frac{1}{19}  } }

tcal=0.6989

The critical value ttab=2.0369 for alpha=0.05

So we reject our null hypothesis H0

So there is sufficient evidence that low income households have fewer children than high income households

6 0
3 years ago
Question 7(Multiple Choice Worth 3 points)
Taya2010 [7]

Answer: y = one twelfth(x + 2)2

Step-by-step explanation:

just did the test

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3 years ago
Someone explain and help plsss
fenix001 [56]

Answer:

(-1, 6)

Step-by-step explanation:

The midpoint is the halfway point. So, if M is the midpoint of PQ, then simply take the distance between your P and M co-ordinates and apply that one more time to get to Q.

Your x value at point M is 5, and your x value at point P is 11.

11 and 5 are 6 units apart.

Since M is in the middle of P and Q, M is therefore 6 units apart from both P and Q on the x-axis, so we can subtract 6 from 5 to find Q's x co-ordinate of -1.

Your y value at point M is -2, and your y value at point P is -10.

-10 and -2 are 8 units apart.

Add 8 to M to find your y co-ordinate at point Q of 6.

Your Q point is at (-1, 6).

5 0
3 years ago
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