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Murrr4er [49]
3 years ago
10

Help with this question plzzzzzz

Mathematics
2 answers:
Pie3 years ago
7 0

Answer:

C) 145 degrees

Step-by-step explanation:

angles 2 and 5 are same side interior angles, which means they're supplementary. (they add together to make 180)

using that, you can make the following equation:

(x is angle 2 to avoid confusion)

35 + x = 180

<em>subtract 35 from both sides</em>

x = 180 - 35

x = 145

fenix001 [56]3 years ago
3 0
I think it’s 145 because if 1,3,5, and 7 are the same (35) than since 1 and 3 are 35 35 plus 35 is 70 and 360 minus 70 is 290 and since 2 and 4 are the same than you would divide 290 and 2 which gives you 145 and 145 plus 145 plus 35 plus 35 equals 360
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Karolina [17]

Answer:

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Step-by-step explanation:

The given equation 5y'' + 3y' - 2y =0 can be written as

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Solving for complementary function we have Roots of (5D^{2}+3D-2) as follows

(5D^{2}+5D-2D-2)

5D(D+1)-2(D+1)=0\\\\(5D-2)(D+1)=0\\\\\therefore D=-1\\D=+2/5

Thus the complementary function becomes

y=y=c_{1}e^{m_{1}t}+c_{2}e^{m_{2}t}

where

m_{1},m_{2} are calculated roots

thus solution becomes

y=c_{1}e^{-t}+c_{2}e^{\frac{2}{5}t}

Now to solve for the coefficients we use the given boundary conditions

y(0)=0\\\\\therefore c_{1}+c_{2}=0\\\\y'(0)=-c_{1}+\frac{2}{5}c_{2}=2.8\\\\\therefore c_{2}+\frac{2}{5}c_{2}=2.8\\\\c_{2}=2\\\\\therefore c_{1}=-2}

hence the solution becomes

y=-2e^-{t}+2e^{\frac{2}{5}t}

8 0
3 years ago
Consider a political discussion group of 8 democrats, 8 republicans and 6 independent suppose the teo groups meme bet are random
BartSMP [9]

Answer:

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Step-by-step explanation:

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Here we are given the people as,

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Probability of choosing first democrat = 1/19

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#SPJ10

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2 years ago
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Mashutka [201]
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A car company claims that its cars achieve an average gas mileage of at least 26 miles per gallon. A random sample of eight cars
motikmotik

Answer:

t=\frac{25.5-26}{\frac{1}{\sqrt{8}}}=-1.414    

The degrees of freedom are given by:

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Step-by-step explanation:

Information given

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s=1 represent the sample standard deviation

n=8 sample size  

\mu_o =26 represent the value to verify

\alpha=0.06 represent the significance level  

t would represent the statistic (variable of interest)  

p_v represent the p value

Hypothesis to est

We want to test if the true mean is at least 26 mpg, the system of hypothesis would be:  

Null hypothesis:\mu \geq 25.5  

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The statistic for this case is given by;

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

Replacing the info given we got:

t=\frac{25.5-26}{\frac{1}{\sqrt{8}}}=-1.414    

The degrees of freedom are given by:

df=n-1=8-1=7  

The p value for this case is given by:

p_v =P(t_{(7)}  

Since the p value is higher than the significance level of 0.06 we have enough evidence to FAIL to reject the null hypothesis and we can conclude that the true mean is not significantly less than 25.5 and then the claim makes sense

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