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Nookie1986 [14]
3 years ago
10

X + y = 3 2x + 2y = -4​

Mathematics
2 answers:
Rasek [7]3 years ago
4 0

Answer:

Step-by-step explanation:

no solutions

2x+2y=-4 divide 2

x+y=-2

x+y=3

zaharov [31]3 years ago
3 0

Answer:

(x,y)= (2/15, -(62/15)

Step-by-step explanation:

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2. Find the lateral area and surface area of the<br> prism.<br> 4 cm<br> 5 cm<br> 4 cm<br> 3 cm
Vaselesa [24]

Answer:

Lateral = 48 cm squared and Surface area = 60 cm squared

Step-by-step explanation:

Lateral surface area  = 4 x 4 + 5x4( Slope) +  4 x 3 (Cross section x2) = 48

Surface area: Lateral + 4x3(base)

4 0
2 years ago
A survey of 865 voters in one state reveals that 408 favor approval of an issue before the legislature. Construct the 95% confid
katrin [286]

Answer:

The 95% confidence interval for the true proportion of all voters in the state who favor approval is (0.4384, 0.5050).

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence level of 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

z is the zscore that has a pvalue of 1 - \frac{\alpha}{2}.

For this problem, we have that:

n = 865, \pi = \frac{408}{865} = 0.4717

95% confidence level

So \alpha = 0.05, z is the value of Z that has a pvalue of 1 - \frac{0.05}{2} = 0.975, so Z = 1.96.

The lower limit of this interval is:

\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.4717 - 1.96\sqrt{\frac{0.4717*0.5283}{865}} = 0.4384

The upper limit of this interval is:

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.4717 + 1.96\sqrt{\frac{0.4717*0.5283}{865}} = 0.5050

The 95% confidence interval for the true proportion of all voters in the state who favor approval is (0.4384, 0.5050).

6 0
3 years ago
Which number line represents the solution to 2.5 – 1.2x &lt; 6.5 – 3.2x?
tensa zangetsu [6.8K]
<span>2.5 – 1.2x < 6.5 – 3.2x

-1.2x + 3.2x < 6.5 - 2.5

3.2x - 1.2x < 4

2x < 4

x < 4/2

x < 2</span>
3 0
3 years ago
Read 2 more answers
Square root of negative 72
Zina [86]

Answer:

i6\sqrt{2} ,  i

( the comma means there is space between the sqrt of 2 and the i.

<em>Hope this helped and plz mark as brainliest!</em>

<em></em>

<em>Luna G.</em>

3 0
3 years ago
How to solve the equation and rounding the answer to four decimal places
pogonyaev
The answer is 0.5778 or 0.578 rounded

5 0
3 years ago
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