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denpristay [2]
2 years ago
14

Question 15 of 43

Mathematics
1 answer:
Andrews [41]2 years ago
6 0

Answer:

Option A

Step-by-step explanation:

\frac{12}{25}  \times  \frac{11}{24}  \times  \frac{10}{23} \times  \frac{9}{22}

we start with 12 red marbles out of 25 marbles, that's the probability for the first.

in the second step we have one red marble less, wich also means one marble less overall

and so on

\frac{12 \times 11 \times 10 \times 9}{25 \times 24 \times 23 \times 22}

=  \frac{11880}{303600}

can be reduced by 1320 (step by step) to

\frac{9}{230}

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Simplify: (–4) • (9) – (5) • (–2) (A)2 (B)–36 (C)–26 (D)82
Lorico [155]
(C) -26 because you have use PEMDAS
3 0
3 years ago
Read 2 more answers
Answer and explain please
Sonja [21]

Answer:

You only need to add more tick marks and you also can multiply by three. 20 times 3 is 60 and 170 times 3 is 360.

8 0
3 years ago
Find the volume of the parallelepiped with adjacent edges PQ, PR, and PS. P(1, 0, −1), Q(3, 3, 0), R(3, −3, 0), S(1, −2, 2)
topjm [15]

Answer:

the volume of the parallelepiped is = 36  

Step-by-step explanation:

given,

P(1, 0, −1),      Q(3, 3, 0),      R(3, −3, 0),     S(1, −2, 2)

PQ = Q - P = (2, 3, 1)

PR = R - P  = (2, -3 , 1)

PS = S - P  = (0, -2 , 3)

now volume of parallelopiped

[PQ PR PS] = \begin{bmatrix}2 & 3 &1 \\ 2 & -3 &1 \\ 0 & -2 &3 \end{bmatrix}

now calculating determinant of the matrix

        = 2 (-9+2) -  3 (6-0) + 1 (-4-0)

        = -14  - 18  - 4

        = -36

hence , the volume of the parallelepiped is = 36  

4 0
3 years ago
Need help will give brainliest
Anton [14]

Answer:

Step-by-step explanation:

sorry i don't know how to draw the diagram,then i can explain better.

9/x=x/27

x²=9×27=9×9×3

x=9√3

3 0
3 years ago
Which equation represents a line that passes through (–9, –3) and has a slope of –6?
IgorC [24]

Answer:

<h2>y + 3 = -6(x + 9) - point-slope form</h2><h2>y = -6x - 57 - slope-intercept form</h2>

Step-by-step explanation:

The point-slope form of an equation of a line:

y-y_1=m(x-x_1)

<em>m</em><em> - slope</em>

The formula of a slope:

m=\dfrac{y_2-y_1}{x_2-x_1}

========================================

We have the slope <em>m = -6</em> and the point (-9, -3).

Substitute:

y-(-3)=-6(x-(-9))\\\\y+3=-6(x+9)

Convert to the slope-intercept form (<em>y = mx + b</em>):

y+3=-6(x+9)           <em>use the distributive property</em>

y+3=-6x-54         <em>subtract 3 from both sides</em>

y=-6x-57

6 0
3 years ago
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