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Lady_Fox [76]
3 years ago
7

The sum of 3 fifteens and 4 twos

Mathematics
2 answers:
Vadim26 [7]3 years ago
8 0
The answer is 15x 3= 45+ 8= 53
Anvisha [2.4K]3 years ago
6 0
53 I think is the answer.
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Answer correctly and fast to get brainliest! Tony bought a sweatshirt with an original price of $48, and he then used a coupon f
storchak [24]

Answer: If it's something like who got the better deal then Tony did.

Step-by-step explanation: The reason I say that is the fact that the 20% off made the sweatshirt $38.40 cause $9.60 was taken off!

3 0
2 years ago
Blake is 7 years older than Heather. In 7 years the sum of their ages will be 55. How old is Blake now?
Andreas93 [3]

Answer:

24 years old

Step-by-step explanation:

Let the age of Blake be x and the age of Heather by y then...

x=7+y

7+x+7+y=55

Notice we are adding additional 7s because the question states "in 7 years"

Simplify the second equation...

7+x+7+y=55

14+x+y=55

Subtract 21 from both sides

x+y=41

Solve using substitution (substitute 7+y for x since x = 7+y)

7+y+y=41

Combine like terms

2y+7=41

Subtract 7 from both sides

2y=34

Divide both sides by 2

y=17

x=7+17=24

Blake is 24 years old now

4 0
2 years ago
Add. Write your answer in simplest form.<br><br> 3/8 + 2/5
Vitek1552 [10]
\frac{3}{8}  +   \frac{2}{5}  =   \frac{(3)(5)}{(8)(5)}   +     \frac{(2)(8)}{(5)(8)}
                                =  \frac{15}{40}   +     \frac{16}{40}
                                =  \frac{31}{40}
5 0
3 years ago
One technique of killing cancer cells involves inserting microscopic synthetic rods, called carbon nanotubules, into the cell. W
Vlad [161]

Answer:

The probability that the cell will be killed is 0.9328.

Step-by-step explanation:

We are given that five nanotubules are inserted in a single cancer cell. Independently of each other, they become exposed to near-infrared light with probabilities 0.2, 0.4, 0.3, 0.6, and 0.5.

Let the event that a cell is killed be 'A' and the event where the ith nanotubule kill the cell be '\text{B}_i'.

This means that the cell will get killed if \text{B}_1 \bigcup \text{B}_2 \bigcup \text{B}_3 \bigcup \text{B}_4 \bigcup \text{B}_5 happens. This represents that the cell is killed if nanotubule 1 kills the cell, or nanotubule 2 kills the cell, and so on.

Here, P(\text{B}_1) = 0.2, P(\text{B}_2) = 0.4, P(\text{B}_3) = 0.3, P(\text{B}_4) = 0.6, P(\text{B}_5) = 0.5.

So, the probability that the cell will be killed is given by;

P(A)= 1 - [(1 - P(\text{B}_1)) \times (1 - P(\text{B}_2)) \times (1 - P(\text{B}_3)) \times (1 - P(\text{B}_4)) \times (1 - P(\text{B}_5))]

P(A) = 1 - [(1 - 0.2) \times (1 - 0.4) \times (1 - 0.3) \times (1 - 0.6) \times (1 - 0.5)]

P(A) = 1 - (0.8 \times 0.6 \times 0.7 \times 0.4 \times 0.5)

P(A) = 1 - 0.0672 = 0.9328

Hence, the probability that the cell will be killed is 0.9328.

4 0
3 years ago
What's the answer n give examples please
melisa1 [442]
The answer would be 1.0404 because 1.02 multiplied by 1.02 is 1.0404
7 0
3 years ago
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