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arlik [135]
3 years ago
13

Mrs. Apple just bought a new dining room table. She needs to make a tablecloth for decoration. What amount of fabric should she

buy if the table has a diameter of 5 feet? Choose the equation that would best help solve this problem.​

Mathematics
1 answer:
storchak [24]3 years ago
7 0

Answer:

A = π x 2.5 x 2.5

Step-by-step explanation:

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In a certain game, a player can solve easy or hard puzzles. A player earns 30 points for solving an easy puzzle and 60 points fo
Karolina [17]

This is a system of equations. We can solve it by recognizing the two linear equalities we've given to solve this equation.

First, let's start off by recognizing two variables: x and y. x will be our number of hard puzzles, and y will be our number of easy puzzles. We're given that the number of hard puzzles and easy puzzles sum to 50, so we can rewrite that as:

x+y=50

Next, we're given that the sum of the points gained from the hard puzzles (60x), and the number of points gained from the easy puzzles (30y), sum to 1950. We can rewrite that as:

60x+30y=1950

Now, we have our two linear equations, and we must solve for the hard puzzles, so x. Solving for the hard puzzles means eliminating the easy puzzles from our systems, so we can multiply our first equation by 30, and subtract it from the first equation. This is a technique called elimination.

30x+30y=1500 \\ 60x+30y=1950 \\ 30x=450 \implies x=15

Since x=15, Tina has solved 15 hard puzzles.

3 0
3 years ago
Please help what’s the answer ??
ivolga24 [154]

Answer:

x = 8

In all the boxes, you will first subtract 8 with 2, which will be 6. Then you will add them.

6 + 6 + 6 = 18

4 0
3 years ago
The difference of twelve times a number and nine times the number
Mama L [17]

Answer:

3 times a number (3x)

Step-by-step explanation: replace the phrase 'a number' with the variable X. then you simply end up with 12x-9x, which equals 3x.

6 0
3 years ago
Angie and Kenny play online video games. Angie buys 1 software package and 3 months of game play. Kenny buys 2 software packages
irga5000 [103]

Answer:

$10

Step-by-step explanation:

cost of one month of game play = x

1(35) + 3x + 2(35) + 5x = 185

35 + 70 + 8x = 185

105 + 8x = 185

-105           -105

8x = 80

/8.     /8

x =10

7 0
1 year ago
In a certain lake, trout average 12 in. in length with standard deviation 2.75 in. and the bass average 4 lb. in weight with sta
NISA [10]

Answer:

The bass fish was the better catch

Step-by-step explanation:

From the question we are told that

     The  population mean for trout is  \mu_1  =  12 \ in

     The  standard deviation is  \sigma_1  =  2.75  \  in

      The  population mean for  base  is  \mu _2  =  4 \ lb

      The standard deviation is  \sigma_2  =  0.8 \ lb

      The number of  trout caught   x_1  =  18

     The number of  bass caught  x_2  =  6

Generally z-value(standardized value ) for the of number  trout caught  is mathematically represented as

        z_1 = \frac{x_1 -  \mu_1}{\sigma_1 }

substituting value

       z_1 = \frac{18 -  12}{2.75 }

       z_1 = 2.18

Generally z-value(standardized value ) for the of number  bass caught  is mathematically represented as

        z_2 = \frac{x_2 -  \mu_2}{\sigma_2 }

substituting value

       z_2 = \frac{6 -  4}{0.8 }

       z_2 = 2.5

From our calculation we see that  z_2 >  z_1

The  fish that was the better catch is the bass fish

3 0
3 years ago
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