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AURORKA [14]
3 years ago
9

At a fabric store, fabrics are sold by the yard. x + y = 5 (17x + 4y = 46) A dressmaker spent $46 on 5 yards of silk and cotton

fabrics for a dress. Silk is $17 per yard and cotton is $4 per yard. Here is a system of equations that represent the constraints in the situation. Find the solution to the system of equations. Write it as an ordered pair below. Use the graphing calculator on the next screen to help. Enter each equation on a separate line on the left-hand side to see their graphs.​
Mathematics
1 answer:
LuckyWell [14K]3 years ago
4 0

Answer:

9.5

Step-by-step explanation:

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A standard deck has 52 cards consisting of 26 black and 26 red cards. Three cards are dealt from a shuffled deck without replace
Allisa [31]

They aren't independent since the probability uses all the cards in the deck

So at the first deal we have the chance of 26/52 of getting a red card, at the second deal we have the chance of a 25/51 of getting another red card, so they aren't independent

8 0
3 years ago
A set of physics exam scores are normally distributed with a mean of 80 points and a standard deviation of 6
Anuta_ua [19.1K]

Answer:

The proportion of exam scores that are lower than Irina's score is 0.9938

Step-by-step explanation:

<u>Data</u>

  • mean: 80 points
  • standard deviation (sd): 6 points
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z-score is computed as follows:

z = (x - mean)/sd

z = (95 - 80)/6 = 2.5

We want to find:

P(z < 2.5)

From the table attached:

P(z < 2.5) = 0.9938

3 0
3 years ago
What’s the commutative steps to multiply 3 times 10 cubed and 2 times 10 to the 4th power
DerKrebs [107]

Answer:

23000

Step-by-step explanation:

6 0
3 years ago
For which shape is 45 degrees the smallest angle of rotational symmetry?
Angelina_Jolie [31]

Answer:

Step-by-step explanation:

You want the external angle to be 45°.

If n = number of sides, the external angles are each 360°/n = 45°

n = 360/45 = 8

The shape is a regular octagon.

4 0
3 years ago
Allison has 5 times as many baseball cards as football cards. In all, she has 120 baseball and football cards. How many baseball
Ede4ka [16]
<span>                           If Jim has x football cards</span> <span>He will have 5x  baseballs cards</span> Thus <span>          x + 5x  =  120      >    total # of cards</span> <span>                   6x  =  120</span> <span>                   x= 120/6    =   20</span> <span>                          so Jim has 5x baseball cards  =   20*5 =100 baseball cards</span>   <span>                     </span>



6 0
3 years ago
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