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katovenus [111]
3 years ago
7

There are 100 students surveyed. 32 are taking Calcus, 45 are talking Spanish, 18 are taking both Calcus and Spanish. If a stude

nt is picked at random, what is the probability that the student is taking Calculus or Spanish. A)77%. B)45% C)95%. D)59%
Mathematics
1 answer:
saw5 [17]3 years ago
7 0

Answer:

C. 95%

Step-by-step explanation:

Because you have to add all percents

Plz mark brainliest

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Which of the following represents the correct inequality statements
mezya [45]

Answer:

what are the options to the question

Step-by-step explanation:


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2 years ago
The number is “ 1372 / 3 “ if it’s too small for you to see
faust18 [17]
V=4/3 pi r^3.
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7 0
2 years ago
T-5 &gt;3(-2+t) <br> please help me
Vladimir79 [104]

Answer:

t < 1/2

Step-by-step explanation:

Isolate the <u>v</u><u>a</u><u>r</u><u>i</u><u>a</u><u>b</u><u>l</u><u>e</u> by dividing each side by <u>f</u><u>a</u><u>c</u><u>t</u><u>o</u><u>r</u><u>s</u> that don't contain the <u>v</u><u>a</u><u>r</u><u>i</u><u>a</u><u>b</u><u>l</u><u>e</u>.

Inequality Form: t < 1/2

Interval Notation: ( -infinity, 1/2)

3 0
2 years ago
Help me please on this
amid [387]
I do believe the answer is 52, sorry if i’m incorrect
4 0
2 years ago
PLEASE HELP ME WITH IT.
scoundrel [369]

OK.  I did it.  Now let's see if I can go through it without
getting too complicated.

I think the key to the whole thing is this fact:

     A radius drawn perpendicular to a chord bisects the chord.

That tells us several things:

-- OM bisects AB. 
   'M' is the midpoint of AB.
   AM is half of AB.

-- ON bisects AC.
    'N' is the midpoint of AC.
   AN is half of AC.

--  Since AC is half of AB,
     AN is half of AM.
     a = b/2 

Now look at the right triangle inside the rectangle.
'r' is the hypotenuse, so

                                            a² + b² = r²

But  a = b/2, so             (b/2)² + b² = r²

(b/2)² = b²/4                   b²/4   + b² = r²

Multiply each side by 4:     b² + 4b² = 4r²
                                       -  -  -  -  -  -  -  -  -  -  -
                                            0  + 5b² = 4r²  
Repeat the
original equation:                a² +  b² =  r²

Subtract the last
two equations:                  -a² + 4b² = 3r² 

Add  a²  to each side:              4b²  =  a² + 3r² .    <=== ! ! !
 
7 0
3 years ago
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