All categories

4 years ago

Can people please help me on this

Mathematics

1 answer:

Bad White [126]4 years ago

7 0

the last one D)4.5298 l check in calculator it did not come correct but I say the last one

You might be interested in

Simplify each complex fraction. Show all work please

Sidana [21]

Invert an multiply

(a/b)/(c/d)=(a/b)(d/c)=(ad)/(bc)

1..
(4x/45)/(12x/25)=(4x/45)(25/12x)=(100x)/(540x)=5/27

2.
(x/9)/(3x/2)=(x/9)(2/3x)=(2x)/(27x)=2/27

3.
(7x/9)/(49/3x)=(7x/9)(3x/49)=(21x^2)/(441)=(x^2)/21

4.
(2x^2y/3yz)/(6/xz)=(2x^2y/3yz)(xz/6)=(x^3)/(9)

5. (4y-3x)/(3xy+y^2)

6. (-9x+6)/(8x+6)

7. (yx^2+y^2)/(x^2+xy^2)

8. x^-1=1/x
(x^2)/(4x+1)

3 0

4 years ago

Please assist me with the missing answers. Scores on the final exam in Ms. Meyer's statistics class follow a normal distribution

Galina-37 [17]

Answer: Ron's z-score is +1.2.

B. 1.2 standard deviation above the mean .

Step-by-step explanation:

Let X deontes the scores of the final exam

Given : Ms. Meyer's statistics class follow a normal distribution with Mean = 82

standard deviation =5.1

Formula : $z=\dfrac{X-Mean}{Standard \ deviation}$

Ron scored 88 on the final.

So, put x=88

$z=\dfrac{88-82}{5.1}=\dfrac{6}{5.1}\approx1.2$

Ron's z-score is +1.2.

Also, 88= 86+(1.2 x 5.1) = Mean +1.2 x (standard deviation)

i.e. This means that Ron's final score is 1.2 standard deviation above the mean .

6 0

3 years ago

As the figure shows Elton runs 500 m to point b first then he turns 100 degrees and runs another 350 m to point c how far is the

Alex777 [14]

Answer:

658.24 m

Step-by-step explanation:

Let A be the point from where Elton started. Connect points A and C, you get triangle ABC with AB=500 m, BC=350 m and m∠B=100°. Use the cosine rule to determine the length of the segment AC:

$AC^2=AB^2+BC^2-2\cdot AB\cdot BC\cdot \cos \angle B,\\ \\AC^2=500^2+350^2-2\cdot 500\cdot 350\cdot \cos 100^{\circ},\\ \\AC^2=250000+122500-350000\cdot (-0.174),\\ \\AC^2\approx 433276.8622,\\ \\ AC\approx 658.24\ m.$

8 0

4 years ago

Read 2 more answers

1/5 - 2/15 ×1/5 - 2/15

ValentinkaMS [17]

Answer:

1 /25.

Step-by-step explanation:

Using order of operations, we perform the multiplication first:

1/5 - 2/15 × 1/5 - 2/15

= 1/5 - 2/75 - 2/15 LCD of 5, 15 and 75 is 75 so we have:

15/75 - 2/75 - 10/75

= 13/75 - 10/75 = 3/75

= 1 /25 (answer).

4 0

3 years ago

An old movie theater has seats on a main floor and in a balcony. The main floor has 26 rows of 29 seats in each row. The balcony

Archy [21]

The main floor has 26 rows of 29 seats each, that is 26*29 = 754 seats
And in the balcony there is 8 rolls of 23 seats, that is 8*23 = 184 seats
So the difference is 754 - 184 = 570
Then the main floor has 570 seat more than the balcony

3 0

3 years ago