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timama [110]
3 years ago
10

Help me i got 10 math question plz help 1st one

Mathematics
2 answers:
wariber [46]3 years ago
5 0

Answer:


1.

It's B, the ratio of boys to girls is 12:20 so you simplify by 4 and get 3:5.

Step-by-step explanation:


NISA [10]3 years ago
4 0
1. a 

2. 6 tps baking powder. For every 3, there is two. 3 multiplied by 2 is 6.

3. 12/8 = 1.5 seedling per minute in 70 minutes...
1.5 * 70 = 105 seedlings can be planted in 70 minutes

4. idk sorry

5. time = distance / speed
time = 300/15
time = 20 hrs


7. The ratio between 12 and 8 is 1.5, so you need to divide every other number by 1.5.
2/1.5=1.3

9/1.5=6

18/1.5=12

8. So, problem statement tells you that 1lb = 16oz and that 1oz = 28.3g. That means that 1lb = 16 * 28.3g = 452.8g

You have three items, convert their weights to grams:
1) 800g
2) 1.6lb = 1.6 * 452.8g = 724.48g
3) 30oz = 30 * 28.3g = 849g

So, sorting from greatest:
3, 2, 1, or: 30oz, 1.6lb, 800g.

9. 5•7=30

10.it will clean 7 cars in 56 minutes
hope this helps and i hope its not confusing
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loris [4]

Answer:

15 and 20

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
EASY QUESTION
Zanzabum

Answer:

im pretty sure it's P({x:x is oven-baked apple & lavender calzone })

Step-by-step explanation:

its the one with the biggest section

8 0
3 years ago
A farm stand sells apples pies and jars of applesauce. The table shows the number of apples needed to
Galina-37 [17]

Answer:

Step-by-step explanation:

3 0
2 years ago
Two ballpoint pens are selected at random from a box that contains 3 blue pens, 2 red pens, and 3 green pens. If X is the number
Flauer [41]

Answer:

a) f(x,y) =\frac{\binom{3}{x}\binom{2}{y}\binom{3}{2-x-y}}{\binom{8}{2}} ;   x = 0, 1 , 2;  y = 0, 1 , 2; 0 ≤ x+y ≥ 2

b) = \frac{9}{14}

Step-by-step explanation:

joint probability is a function that characterizes the distribution of a random variable. If X and Y be two random variables then the joint probability will be P(X = x, Y=y)

Given Data,

X = The number of blue Pens

Y = The number of red Pens

a)

possible outcomes(X, Y) are (0, 0), (0, 1), (1, 0), (1, 1), (0, 2), (2,0)

Please refer fig. also

total number ways of selecting any 2 pens = \binom{8}{2}= \frac{8!}{2! 6!} =28

f(x,y) = \frac{\binom{3}{x}\binom{2}{y}\binom{3}{2-x-y}}{\binom{8}{2}} ;   x = 0, 1 , 2;  y = 0, 1 , 2; 0 ≤ x+y ≥ 2

b)

P(X,Y)∈A = P(X + Y ≤ 1)

= P(0,0) + P(1,0) + P(0,1)

= \frac{3}{28} + \frac{3}{14} + \frac{9}{28}

= \frac{9}{14}

4 0
3 years ago
3/8 x 2/6 x 4/8 x 5/12
Evgesh-ka [11]

Answer:

\frac{5}{192}

Step-by-step explanation:

\frac{3}{8} * \frac{2}{6} * \frac{4}{8} * \frac{5}{12}

Multiply all numerators

3 * 2 * 4 * 5 = 6 * 20 = 120

Multiply all denominators

8 * 6 * 8 * 12 = 48 * 96 = 4,608

\frac{120}{4608}

Simplify

\frac{5}{192}

Hope this helps :)

3 0
2 years ago
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