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3 years ago

10

a card is drawn from a standard deck of cards, then a month of the year is chosen. what is the probability of getting a diamond

or a 7, then november?

1 answer:

sukhopar [10]3 years ago

3 0

Im probably to late but there is too little info to answer this

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Are the following expressions equivalent 5(2z+3) and (5x2)+(z+3)

alexdok [17]

Answer: yes they are

Step-by-step explanation:

3 0

3 years ago

Is the line through points P(0, –9) and Q(2, –8) perpendicular to the line through points R(1, 4) and S(3, 3)? Explain

Serjik [45]

The quickest way to tell if a line is perpendicular is to find the slope, so you'll need to get the slope for both lines

PQ = ((-8) - (-9))/(2 - 0) = 1/2

and, for reference, a perpendicular slope is the negative reciprocal of the original (so we're looking for -2)

RS = (3 - 4)/(3 - 1) = -1/2

so, no, these two lines aren't perpendicular because the slope of RS is only the negative of PQ, not the negative <em>reciprocal</em>.

3 0

3 years ago

Read 2 more answers

A math teacher noticed that her students always missed class when she gave a test. she was very confused by this, since a test i

IgorC [24]

Deductive reasoning!!!

3 0

3 years ago

Please help me for the brainliest answer

TiliK225 [7]

Answer:

$n^2+3\\(n+1)^2$

Step-by-step explanation:

$n^2+3\\1^2+3=4\\2^2+3=7\\3^2+3=12$

$(n+1)^2\\(1+1)^2=4\\(2+1)^2=9\\(3+1)^2=16$

6 0

3 years ago

Question 7: Find the value of x. The numbers below are in degrees.<br> 140<br> S<br> 50<br> 20

Lyrx [107]

Given:

A figure.

To find:

The value of x.

Solution:

Draw two parallel lines as shown in the below figure.

If a transversal line intersect two parallel lines, then alternate interior angles are same.

$a=20$ (Alternate interior angle)

$d=b$ (Alternate interior angle) ...(i)

The value of angle d is

$d=50-a$

$d=50-20$

$d=30$

Using (i), we get

$b=30$

If a transversal line intersect two parallel lines, then same sides interior angles are supplementary angles.

$c+140=180$

$c=180-140$

$c=40$

Now,

$x=b+c$

$x=30+40$

$x=70$

Therefore, the value of x is 70.

8 0

3 years ago