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3 years ago

How do i solve this?

Mathematics

2 answers:

hjlf3 years ago

8 0

The sum of angle measures inside a triangle equals 180°. Subtract 180-135 to find the measure of angle a. 180-135=45. Then add 45 and 58 to get 103. Then you subtract 103 from 180 to get an answer of 77.

Alla [95]3 years ago

5 0

First, find the supplementary angle of angle A. Together, they should add up to 180°, which is a straight line.

123°+y°=180°

y°= 180°-123°

y°=57°

The interior angles of a triangle add up to 180°.

58°+57°+x°=180°

115°+x°=180°

x°=65°

The measure of angle x is 65°.

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Graph this line using the slope and y-intercept: y = x + 9

prohojiy [21]

Answer:

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4 years ago

Fluoxetine, a generic anti-depressant, claims to have, on average, at least 20 milligrams of active ingredient. An independent l

san4es73 [151]

Answer:

$t=\frac{18.7-20}{\frac{5}{\sqrt{80}}}=-2.326$

$df=n-1=80-1=79$

$p_v =P(t_{(79)}$

Step-by-step explanation:

Information given

$\bar X=18.7$ represent the sample mean for the content of active ingredient

$s=5$ represent the sample standard deviation for the sample

$n=80$ sample size

$\mu_o =20$ represent the value that we want to test

t would represent the statistic

$p_v$ represent the p value for the test

System of hypothesis

We need to conduct a hypothesis in order to check if the true mean for the active agent is at least 20 mg, the system of hypothesis would be:

Null hypothesis: $\mu \geq 20$

Alternative hypothesis: $\mu < 20$

The statistic would be:

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

Now we can calculate the statistic:

$t=\frac{18.7-20}{\frac{5}{\sqrt{80}}}=-2.326$

P value

The degrees of freedom are calculated like this:

$df=n-1=80-1=79$

Since is a one left tailed test the p value would be:

$p_v =P(t_{(79)}$

6 0

4 years ago

Jim is designing a seesaw for a children’s park

dsp73

Do you have a question or is that the problem cause that’s not enough information to solve the problem. :/

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4 years ago

Fruit-O-Rama sells dried pineapple for $0.25 per ounce. Mags spent a total of $2.65 on pineapple. How many ounces did she buy

Andrei [34K]

Answer:

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3 0

3 years ago

Read 2 more answers

HELP PLEASE solve for x : 2.1x - 3.6 = 8 1) 6.77 2)2.1 3)1.22 4)5.52

ss7ja [257]

Answer:

Rounding x = 5.52

Step-by-step explanation:

2.1x - 3.6 = 8

Add 3.6 to each side

2.1x - 3.6+3.6 = 8+3.6

2.1x = 11.6

Divide each side by 2.1

2.1x/2.1 = 11.6/2.1

x =5.523809524

Rounding x = 5.52

3 0

3 years ago