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Nana76 [90]
2 years ago
14

Jenny has five exam scores of 79,66, 71, 89, and 84 in her biology class. What score does she need on the final exam to have a m

ean grade of 80?
Round your answer to two decimal places, if necessary. (All exams have a maximum of 100 points.)
Mathematics
2 answers:
olganol [36]2 years ago
5 0

Answer:

she needs to get a 99

Step-by-step explanation:

andrezito [222]2 years ago
5 0

Answer: 76.34

Step-by-step explanation:

79.66 + 71 + 89 + 84 + 76.34 = 400/5 = 80

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The scale drawing of a backyard includes a tennis court 10cm x 5.5cm. If the drawing has a scale
Natasha2012 [34]

Step-by-step explanation:

2.5 m = 250 cm

so, the scale factor is 1/250

that means the tennis court is in reality

10×250cm × 5.5×250cm = 2500 × 1375 = 3,437,500 cm²

1 m² = 100×100 = 10,000 cm²

so,

3,437,500 cm² = 343.75 m²

5 0
2 years ago
When individuals in a sample of 150 were asked whether or not they supported capital punishment, the following information was o
Roman55 [17]

Answer:

Option C.

Step-by-step explanation:

Given information:

Sample size = 150

Number of Opinions = 3 (Yes, No, No Opinion)

Yes = 40

No = 60

No opinion = 50

We need to find the expected frequency for each group.

Expected frequency for each group is the quotient of sample size and number of opinions.

\text{Expected frequency for each group}=\dfrac{\text{Sample size}}{\text{Number of Opinions}}

\text{Expected frequency for each group}=\dfrac{150}{3}

\text{Expected frequency for each group}=50

Therefore, the correct option is C.

6 0
3 years ago
What value from the set {6, 7, 8, 9, 10} makes the equation 5x + 2 = 47 true? Show your work. (5 points)
olga nikolaevna [1]

Answer:

trure correct

ok must of luck

6 0
3 years ago
Hello i need some help
Natalija [7]

Answer:

y = 2x - 1

Step-by-step explanation:

(3, 5) (5, 9)

slope = (9-5)/(5-3) = 4/2 = 2

y = mx + b

5 = 2(3) + b

-1 = b

y = 2x -1

6 0
3 years ago
Read 2 more answers
Which one of these is the identity for addition?<br> (A) -1<br> (B) 0<br> (C) 1
Blababa [14]

Answer:

c

Step-by-step explanation:

because 1 is also know as +1

3 0
2 years ago
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