All categories

4 years ago

PLEASE HELP FIND THE VALUE OF X!!!I WILL MARK BRAINLIEST

Mathematics

1 answer:

Serga [27]4 years ago

3 0

Answer: x = ~6.928

Step-by-step explanation:

To find the value of X. we can use the sine of the angle:

sin (angle) = opposite / hypotenuse

sin (60) = opposite / 8

Solving for this, we get 6.928 for the opposite side.

You might be interested in

Describe the transformation from the graph (Desmos!)

dimulka [17.4K]

Answer: (I am really not sure the answer if it is wrong I am so sorry)

h=3, k=2

Horizontal: up, 2 units

Vertical: up, 3 units

4 0

3 years ago

he response times for a random sample of 40 medical emergencies were tabulated. The sample mean is 13.25 minutes. The population

Gwar [14]

Answer:

The calculated value Z = 2.5 > 1.96 at 0.05 level of significance

The null hypothesis is rejected

The Alternative hypothesis is rejected

The EMS director wants to service goal of 12 minutes or less is being achieved

Step-by-step explanation:

Step(i):-

Given that the size of the random sample = 40

Given that the mean of the sample (x ⁻) = 13.25

Given that the standard deviation of the Population = 3.2 minutes

Level of significance = 0.05

The mean of the Population (μ) = 12

Step(ii):-

Null hypothesis:-H₀: (μ) = 12

Alternative Hypothesis: H₁ : μ < 12

Test statistic

$Z = \frac{x^{-}-mean }{\frac{S.D}{\sqrt{n} } }$

$Z = \frac{13.25-12 }{\frac{3.2}{\sqrt{40} } }$

Z = 2.5

The tabulated value Z₀.₀₅ = 1.96

The calculated value Z = 2.5 > 1.96 at 0.05 level of significance

The null hypothesis is rejected

The Alternative hypothesis is rejected

Final answer:-

The EMS director wants to service goal of 12 minutes or less is being achieved

3 0

3 years ago

In a poll, 44% of the voters say they plan to reelect the mayor. The poll has a margin of error of ±3 percentage points. Use a m

Amanda [17]

Answer:

Kindly check explanation

Step-by-step explanation:

Given the following :

Percentage of voters who plan to re-elect mayor = 44%

Margin of Error in measurement = ±3 % points

The absolute value inequality to find the lowest and greatest percent of points :

X = mid value

44% = estimated percentage

≤3 = error margin

Hence,

|mid value - estimate| ≤ error margin

|x−44|≤3

Hence,

-3 ≤ x - 44 ≤ +3

-3 + 44 ≤ x ≤ 3 + 44

41 ≤ x ≤ 47

Hence,

Least percentage point = 41

Greatesr percentage point = 47

3 0

3 years ago

Find the arc length with the given information central angle=pi/4 radius=2

Ipatiy [6.2K]

Answer:1.57

Step-by-step explanation:

6 0

3 years ago

Based on the information marked in the diagram, ABC and DEF must be congruent.

drek231 [11]

Answer:

Option A is correct

True, ΔABC and ΔDEF must be congruent.

Explanation:

LA theorem or Postulates states that given two right triangles, where one acute angle and a leg of one of the triangles are congruent to an angle and a leg of the other triangle, then the two triangles are congruent.

In ΔABC and ΔDEF

AB = DE [Leg] [Given in the figure]

$\angle BAC = \angle EDF = 90^{\circ}$ [Given]

$\angle BCA = \angle EFD$ [Acute angle] [Given in the figure]

Then, by the LA theorem or Postulates;

therefore, ΔABC $\cong$ ΔDEF .

3 0

4 years ago

Read 2 more answers