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Dimas [21]
3 years ago
14

I don't understand this question can someone help me with this please, please explain!! and thank you for the help!! If u dont k

now try your best :D

Mathematics
1 answer:
MrRissso [65]3 years ago
7 0

Answer:

1. 4x=36

2. x+3 = 15

Step-by-step explanation:

so for 1 if one cupcake is $4.00 that means multiplying it by x gets you $36.00

and the 4 next to the x means multiplyand x is sam and 15 is marco sam is 3 years younger so x+3=15 and x being 12 <3 hope this helps

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Suppose that you draw two cards from a deck. After drawing the first card, you do not put the first card back in the deck. What
S_A_V [24]

Answer:

(B) 0.0588

Step-by-step explanation:

The probability is calculated as a division between the number of possibilities that satisfy a condition and the number of total possibilities. Then, the probability that the first card is diamonds is:

P_1=\frac{13}{52}

Because the deck has 52 cards and 13 of them are diamonds.

Then, if the first card was diamonds, the probability that the second card is also diamond is:

P_2=\frac{12}{51}

Because now, we just have 51 cards and 12 of them are diamonds.

Therefore, the probability that both cards are diamonds is calculated as a multiplication between P_1 and P_2. This is:

P=\frac{13}{52}*\frac{12}{51}=\frac{1}{17}=0.0588

8 0
3 years ago
Help would be greatly appreciated!
eimsori [14]

b

Take a look at everything inside the brackets sqrt(50x^2) = sqrt(5*5*x*x * 2) For ever 2 factors you can bring one out and drop the other one. That means take out 5 * x * sqrt(2). Two is what is left inside the brackets. B must = 2.

c

Do the same thing here. Write all the primes under the square root. Take out 1 for every two under the root sign. sqrt(32x) = sqrt(2*2*2*2*2*x) You can bring out two 2s. There is one left over. Leave it under the root sign. The x is a loner. It stays under the root sign. c = 2 * 2 = 4.

e

Again do the prime factor thing. sqrt(18n) = sqrt(3*3*2*n) = 3*sqrt(2*n)

e = 3

g

sqrt(72*x*x) = sqrt(3 * 3* 2 * 2 * 2 * x * x) = 3 *2 * x* sqrt(2) For every 2 prime factors you can pull out 1 of them outside the square root sign. g = 6

Comment

There are many people on the net and on Brainly that will say that you should know the perfect squares from 1 to 100 (say) so 4 9 16 25 36 49 64 81 100 are the numbers that you should memorize. When they are under the root sign, their roots can be taken out as 2 3 4 5 6 7 8 9 10. For this question I think it is better to use the pairs rule I've given you above. If someone else answers they are likely to do it the way it is written up in this paragraph. It's a free country. You are free to take the answer you like best.

7 0
3 years ago
The formula below gives the Fahrenheit temperature F in terms of the Celsius temperature C.
Nostrana [21]
F=\dfrac{9}{5}C+32\\\\a.\ \dfrac{9}{5}C+32=F\ \ \ \ |-32\\\\\dfrac{9}{5}C=F-32\ \ \ |\cdot\dfrac{5}{9}\\\\C=\dfrac{5}{9}(F-32)


F=60\to C=\dfrac{5}{9}(60-31)=\dfrac{5}{9}\cdot29\approx16.1\\\\\boxed{60^oF\approx16.1^oC}


C=42\to F=\dfrac{9}{5}\cdot42+32=75.6+32=107.6\\\\\boxed{42^oC=107.6^oF}
8 0
3 years ago
triangle ABC has coordinates A(4, 1), B(2, 3), and C(7, 5). If the triangle is rotated 270° counterclockwise about the origin, w
Kitty [74]

Coordinates of a' would be (1,-4)

4 0
3 years ago
Which set of three numbers could be the side lengths of a triangle?
makvit [3.9K]

Answer:

b

Step-by-step explanation:

8 0
3 years ago
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