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wolverine [178]
3 years ago
14

Solve 4x+3y=-2 3x + 5y = 15

Mathematics
1 answer:
ivann1987 [24]3 years ago
8 0

Answer:

x=-5 y=6

Step-by-step explanation:

Multiply the first by 3 and the second by -4

Then add them. Y will be 6

Put 6 for y in the first one and youll find x=-5

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50, 40<br> What’s the GCF of these numbers
dexar [7]

Answer:

10

Step-by-step explanation:

40=2 x 2 x 2 x 5

50=2 x 5 x 5

therefore, GFC = 2x5

GFC= 10

3 0
3 years ago
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Find the critical value of x2 based on the given information H1 &gt;3.5 n=14 a=0.05
egoroff_w [7]

Answer:

The degrees of freedom are given by:

df = n-1=14-1=13

The significance level is \alpha=0.05 and then the critical value can be founded in th chi square table we need a quantile that accumulates 0.05 of the area in the right tail of the distribution and for this case is:

\chi^2_{\alpha}= 22.362

And if the chi square statistic is higher than the critical value we can reject the null hypothesis in favor of the alternative.

Step-by-step explanation:

We have the followign system of hypothesis:

Null hypothesis: \sigma^2 \leq 3.5

Alternative hypothesis: \sigma^2 >3.5

The degrees of freedom are given by:

df = n-1=14-1=13

The significance level is \alpha=0.05 and then the critical value can be founded in th chi square table we need a quantile that accumulates 0.05 of the area in the right tail of the distribution and for this case is:

\chi^2_{\alpha}= 22.362

And if the chi square statistic is higher than the critical value we can reject the null hypothesis in favor of the alternative.

4 0
3 years ago
Lydia makes $7,000 per month in New York City at her interior design company. She can't spend more than 25% of her income on the
Nataly [62]

Answer:

The maximum amount that Lydia can spend on a one-bedroom apartment is $ 1,750.

Step-by-step explanation:

Given that Lydia makes $ 7,000 per month in New York City at her interior design company, and that she can't spend more than 25% of her income on the one bedroom apartment, to determine the maximum amount of money that she can spend must be made the following calculation:

7,000 x 0.25 = X

1,750 = X

Thus, the maximum amount that Lydia can spend on a one-bedroom apartment is $ 1,750.

7 0
3 years ago
Whisper is exercised twice a day.
aleksklad [387]

Answer:

I:23/48

ii 25/48

Step-by-step explanation:

30min=0.5hr

total time exercised: 11+0.5=11.5hr

Divided by total hours of a day:

11.5/24=115/240=23/48

ii:(48-23)/48

4 0
3 years ago
Read 2 more answers
A local realtor makes 6% commission on all houses he sells. Last month his sales totaled $1,850,000. How much will his commissio
Eddi Din [679]
His commission would be 111,000.
You can get this answer by multiplying 6% times 1,850,000. This would get you the answer of 111,000.

Hope this helps! I would greatly appreciate a brainliest! :)
6 0
3 years ago
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