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3 years ago

15

Part B

1 answer:

Georgia [21]3 years ago

5 0

Answer:140

Step-by-step explanation: It is a really big number not the most reasonable answer for the low amount of marbles their are in the jar adding 58 and 82 gives you your answer

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The sum of four numbers is 20 and their average is 5. When a fifth is added, the new average is 6. What is the fifth number?

ipn [44]

Answer:

10

Step-by-step explanation:

We'll note the numbers as $x_{n}, x_{n+1} ...$

$x_1 + x_2 + x_3 + x_4 = 20\\Avg = 5\\\frac{x_1 + x_2 + x_3 + x_4 + x_5 }{5} = 6 = \frac{20 + x_5}{5}\\ 4 + \frac{x_5}{5} = 6\\\\frac{x_5}{5} = 2\\\x_5 = 10$

8 0

2 years ago

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Please can someone help me on this I’m trying to revise for my test and I don’t understand this question

docker41 [41]

Answer:

∠ EAB = 85°

Step-by-step explanation:

∠ EBC and ∠ BCD are same- side interior angles and sum to 180° , so

∠ BCD = 180° - ∠ EBC = 180° - 148° = 32°

the sum of the 3 angles in Δ ADC = 180° , that is

∠ EDC + ∠ BCD + ∠ EAB = 180°

63° + 32° + ∠ EAB = 180°

95° + ∠ EAB = 180° ( subtract 95° from both sides )

∠ EAB = 85°

5 0

2 years ago

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If a cereal box (rectangular prism) has the dimensions of 6 inches by 4 inches by 14 inches, what is the volume?

musickatia [10]

Answer:

the volume is 336

6 0

2 years ago

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Add these fractions, giving your answer in simplest form. <br> 2 1/4 + 3 1/5

dalvyx [7]

5 2/8 beacuse if you add it up that what it makes

3 0

3 years ago

Read 2 more answers

jeanine Baker makes floral arrangements. She has 13 different cut flowers and plans to use 7 of them. How many different selecti

Ksju [112]

A total of 1,716 selections of the 7 flowers are possible.

Step-by-step explanation:

Step 1:

There are 13 flowers from which Jeanine Baker plans to use 7 of them.

To determine the number of selections that are possible we use combinations.

The formula for combinations is; $^{n} C_{r}=\frac{n !}{(n-r) ! r !}$ .

Step 2:

In the given formula, n is the total number of options and r is the number of options to be selected.

For this question, $n = 13$ and $r=7$ .

So $^{13} C_{7}=\frac{13 !}{(13-7) ! 7 !} = \frac{13 !}{(6) ! 7 !} = 1,716.$

So a total of 1,716 selections are possible.

3 0

2 years ago