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Oksana_A [137]
3 years ago
10

Kay scored above 90% on five of her math quizzes, 80% to 90% on fourteen of them, and 70% to 80% on two of them. What is the exp

erimental probability of her scoring from 80% to 90% on her next math quiz?
Mathematics
1 answer:
Leya [2.2K]3 years ago
3 0
In total, Kay took 5+14+2=21exams. she got 80%-90% on 14 of them. the probably is 14/21 which is 2/3. Therefore, the probability of Kay getting 80%-90% on her next exam is 2/3 or 66.6%
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postnew [5]

Answer:

second option

Step-by-step explanation:

Given the rule

(x, y ) → (x + 3, y - 5)

This means add 3 to the original x- coordinate and subtract 5 from the original y- coordinate, that is

D(4, - 4 ) → D'(4 + 3, - 4 - 5 ) → D'(7, - 9 )

E(5, - 5 ) → E'(5 + 3, - 5 - 5 ) → E'(8, - 10 )

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2 years ago
To join a health club, a person must pay a $75 one-time fee plus a charge of $30 per month. This situation can be presented by a
Rudiy27

Answer:

y = 30x + 75

Step-by-step explanation:

every month you're paying 30 dollars for a fee.

the 75 dollars is simply the "down payment" so to say.

m is the constant growth or the continuous growth or the charge per month.

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2 years ago
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EleoNora [17]

Answer:

A- 7.4 ⋅ 10−4 mm

Step-by-step explanation:

Well, to solve this problem, we must convert the number and / or the units in a more imaginable one.

We are given two choices:

a. 7.4 x 10^-4 mm

b. 7.4 x 10^4 mm

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a. 7.4 x 10^-4 mm (1 m / 1000 mm) = 0.00000074 m

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8 0
1 year ago
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Answer:

1

Step-by-step explanation:

3(-2y) +2y = -4

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3 years ago
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vichka [17]

Answer:

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It's direct because it's equation is y = -1/2x

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