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3 years ago

Help would be very appreciated

Mathematics

2 answers:

Ludmilka [50]3 years ago

5 0

Answer: 1.5m/s

Step-by-step explanation:

tamaranim1 [39]3 years ago

5 0

Answer:

1.5m/s

Step-by-step explanation:

distance/time= 6 meters/4 secs=1.5meters per sec

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Find the variable (this is special right triangles unit)

scZoUnD [109]

Answer:

a= 10sqrt(2) , b= 10

Step-by-step explanation:

In the picture above that you can see the explanation of solution.

6 0

3 years ago

In a basketball game, Alison made 6 of 13 free shots.

lys-0071 [83]

Answer:

madhu because his are closer his shots are 5 out of 9 so he only has 4 missing hers are 6 out of 13 she has 7 missed shots hope thats better

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Explain how to find the value of x. Be sure to include the postulates, definitions and theorems that justify your answer.

Black_prince [1.1K]

Answer: x = 12

Step-by-step explanation:

We can see two triangles rectangles, we will use the angle S to solve this, as this angle is common to both triangles.

We know that:

cos(S) = adj cathetus/hipotenuse.

Then we have, for the triangle SRT.

Cos(S) = 9/SR.

for the big triangle, SQR, we have:

Cos(S) = SR/(9 + 16)

now we can find the quotient of those two equations and get:

cos(S)/cos(S) = 9/Sr*(9+16)/SR

SR^2 = 9*(25)

SR = 15.

Now with this side we can find the value of x.

We can use the Pythagorean theorem in the triangle SRT, where the sum of the squared cathetus is equal to the hypotenuse:

9^2 + x^2 = 15^2

x = √(15^2 - 9^2) = 12

7 0

3 years ago

What is the slope of the line in the graph? - 4/3 -3/4 3/4 4/3

mixas84 [53]

Answer:

-3/4

Step-by-step explanation:

slope = rise/run = y2-y1/x2-x1

3 0

3 years ago

A study was conducted to determine whether magnets were effective in treating pain. The values represent measurements of pain us

amm1812

Answer:

Given:

Sham: n= 20, x=0.44, s=1.24,

Magnet:n= 20, x =0.49, s= 0.95

For Sham:

Sample size, n = 20

Sample mean = 0.44

Standard deviation = 1.24

For Magnet:

Sample size = 20

Sample mean = 0.49

Standard deviation = 0.95

The null and alternative hypotheses:

H0: s1²=s2²

H1: s1² ≠ s2²

a) To find the test statistics, use the formula:

$\frac{s1^2}{s2^2}$

$\frac{1.24^2}{0.95^2} = \frac{1.5376}{0.9025} = 1.7037$

Test statistics = 1.7037

b) P-value:

Sham: degrees of freedom $= n - 1 = 20 - 1 = 19$

Magnet: degrees of freedom $= n - 1 = 20 - 1 = 19$

The critical values:

[Za/2, df1, df2)], [(1 - Za/2), df1, df2]

$f[0.05/2, 19, 19], f[(1 - 0.05/2), 19, 19]$

$f[0.025, 19, 19], f[0.975, 19, 19]$

$(2.526, 0.3958)$

The rejection region:

Reject H0, if F < 0.3958 or if F > 2.526

c) Conclusion:

Since the critical values of test statistic is between (0.3958 < 1.7037 < 2.526), we fail to reject null hypothesis H0.

There is insufficient evidence to to support the claim that those given a sham treatment have reductions that vary more than those treated with magnets

3 0

3 years ago