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Charra [1.4K]
3 years ago
9

the temperature is 75 degrees fahrenheit. if the temperature decreases 15 degrees, what is the new temperature

Mathematics
1 answer:
lisabon 2012 [21]3 years ago
7 0

Answer: 60 degrees!

Step-by-step explanation:

75 - 15 = 60

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Consider two boxes, one containing one black and one white marble, the other, two black and one white marble. A box is selected
valina [46]

Answer:

\frac{7}{12}

Step-by-step explanation:

Probability refers to chance of happening of some event.

Conditional probability is the probability of an event A, given that another event B has already occurred.

B_1,B_2 denote the two boxes.

In box B_1:

No. of black balls = 1

No. of white balls = 1

In box B_2:

No. of black balls = 2

No. of white balls = 1

Let B, W denote black and white marble.

So, probability that either of the boxes B_1,B_2 is chosen is \frac{1}{2}

Probability that a black ball is chosen from box B_1 = \frac{1}{2}

Probability that a black ball is chosen from box B_2=\frac{2}{3}

To find:probability that the marble is black

Solution:

Probability that the marble is black = \frac{1}{2}(\frac{1}{2} )+\frac{1}{2}(\frac{2}{3})=\frac{1}{4}+\frac{1}{3}=\frac{7}{12}

6 0
3 years ago
Is 100 t-shirts for $428.00 proportional to 3,000 t-shirts for $12,180.00?
Aleks04 [339]

No 3,000 t-shirts are = to 12,840.

8 0
3 years ago
Solve for f: −5f=20<br> 30 POINTS TO SOMEONE WHO HELPS
zloy xaker [14]

Answer:

\huge\boxed{\sf f = -4}

Step-by-step explanation:

\sf -5f = 20\\\\Dividing\ both\ sides\ by\ -5\\\\\frac{-5f}{-5} = \frac{20}{-5} \\\\f = -4

\rule[225]{225}{2}

Hope this helped!

<h2>~AnonymousHelper1807</h2>
7 0
2 years ago
X·|2x+5|+2x·|x-3|=35
VARVARA [1.3K]
You have the answer into the images.

8 0
3 years ago
if the cost of 3 chocolates and 2 cookies is $22 and that of 2 chocolates and 3 cookies is $18, what is the cost of cookies.​
Vanyuwa [196]

Answer:$2

Step-by-step explanation:Express as two equations . Lex x Be chocolate and y be cookies.

3x+2y=22

2x+3y= 18

Common factor of 6 so times first ran by 2, second ran by 3 . Eliminate.

4 0
2 years ago
Read 2 more answers
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