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stepladder [879]
3 years ago
10

PLS HELP ME PLS I WILL GIVE BRAINLIEST PLS ANSWER CORRECTLY PLS

Mathematics
1 answer:
lesantik [10]3 years ago
5 0
It’s the last one D.
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A dolphin was swimming 20 feet below the surface of the water. It descended 8 feet to catch a fish. What integer represents its
Nimfa-mama [501]
-28. It’s underwater which is -20 and went -8 more feet down.
3 0
4 years ago
Suppose James randomly draws a card from a standard deck of 52 cards. He then places it back into the deck and draws a second ca
shutvik [7]

Answer:

0.01923 or 1.92 %

Step-by-step explanation:

The probability of drawing a queen card out of deck is 4/52

∴ P(Q)= 4/52

there are 4 queens in a deck, one of each suit.

The probability of drawing a diamond card out of deck is 13/52

∴P(D)= 13/52

there are 13 cards in diamond suit (including the three face cards).

The total will remain 52 as he has replaced the first card and have not moved it aside

therefore, the net probability for both scenarios will be defined by calculating both probabilities.

P= P(Q) x P(D)

P=  4/52 x 13/52

P=1/52

P=0.01923 (converting into percentage)

P=0.01923  x 100%

P=1.92 %

Answer: the probability that James draws a queen card as the first card and a diamond card as the second card is 1.92%

4 0
3 years ago
Malala is following this recipe for bread rolls.
kenny6666 [7]

Answer:

Salt = 8 g

Yeast = 6.4 g

Oil =24 ml

Water = 280ml

Step-by-step explanation:

Salt = \frac{10}{500}*400 = 2*4 = 8

yeast =\frac{8}{500}*400= \frac{32}{5}=6.4

Oil =\frac{30}{500}*400=6*4=24 ml

Water = \frac{350}{500}*400=70*4=280 ml

8 0
3 years ago
Read 2 more answers
Manufacture of a certain component requires three different machining operations. Machining time for each operation has a normal
Nikolay [14]

Answer:

0.0359

Step-by-step explanation:

Data provided:

mean values of three independent times are 15, 30, and 20 minutes

the standard deviations are 2, 1, and 1.6 minutes

Now,

New Mean = 15 + 30 + 25 = 65

Variance = ( standard deviation )²

or

Variance = 2² + 1² + 1.6² = 7.56

therefore,

Standard deviation = √variance

or

Standard deviation =  2.75

Thus,

Z-value = \frac{\textup{60 - 65}}{\textup{2.75}}

or

Z-value = - 1.81

from the Z-table

the Probability of Z ≤ -1.81 = 0.0359

6 0
3 years ago
The hens at colston's egg farm laid 9,663 eggs last month. Mr. Colston put 4 dozen eggs in each packing crate. How many eggs did
klio [65]
He had 75. eggs left but the answr would be 2415.75
4 0
4 years ago
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