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Alona [7]
3 years ago
15

HELP!!! WILL MARK BRAINLIEST!

Mathematics
2 answers:
larisa86 [58]3 years ago
5 0
Answer: Its 140%

pls mark brainlist if you do it :3
ser-zykov [4K]3 years ago
3 0

Answer:

240%

Step-by-step explanation:

48/20 = 2.4 = 240%

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Frank has a chance of receiving an A grade in statistics, a chance of receiving an A grade in geology, and a chance of receiving
valentinak56 [21]

Complete Question:

Frank has a 41% chance of receiving an A grade in statistics, a 36% chance of receiving an A grade in geology, and a 23% chance of receiving A grades in both statistics and geology. Find the probability that he receives an A in statistics or geology (or both) Write your answer as a decimal (not as a percentage).

Answer:

The probability that he receives an A in statistics or geology (or both) is:

0.54

Step-by-step explanation:

Probability of receiving an A grade in statistics = 41% or 0.41

Probability of receiving an A grade in geology = 36% or 0.36

Probability of receiving A grades in both statistics and geology = 23% or 0.23

Let S = statistics and p(S) = probability of A grade in statistics

Let G = geology and p(G) = probability of A grade in geology

Let p(S and G) = probability of A grades in statistics and geology.

The probability that he receives an A in statistics or geology (or both) is:

= p(S + G) - p(S and G)

= (0.41 + 0.36) - 0.23

= 0.54

8 0
3 years ago
Find an integer value of b that makes x^2 + bx - 81 factorable​
m_a_m_a [10]

x² + bx - 81

there are 2 formula that fit this equation :

>> x² - a² = (x+a)(x-a)

or

>> x² + 2ax² + a² = (x+a)(x+a)

because the last value of our equation is negative value therefore we have to use the first formula >> x² - a² = (x+a)(x-a)

step:

x² + bx - 81  

x² + bx - 9²

because we have to follow the first formula x² - a² therefore bx = 0

x² + bx - 9²

bx = 0

b = 0

3 0
3 years ago
A function is represented by the graph.
Ahat [919]

If you mean find the y intercept:

y= 5x - 6

so in order to find the y intercept just substitute x with 0 so you get:

y=5*0-6\\y=0-6\\y=-6

Answer:

y = -6 or

(0,-6)

5 0
3 years ago
Tina described four triangles as shown below:
lana [24]
All triangles are unique. 
The question should read, which two of the 4 given triangles are similar.<span>the intended answer is likely triangle D, because there are infinitely many different triangles described by D, namely all equilateral triangles.</span>
4 0
3 years ago
Read 2 more answers
What is the value of y in the solution to the system of equations? One-thirdx + One-fourthy = 1 2x – 3y = –30 –8 –3 3 8
Neporo4naja [7]

Step-by-step explanation:

1<u>/</u><u>3</u><u>x</u><u>+</u><u>1</u><u>/</u><u>4</u><u>0</u><u> </u><u>=</u><u>1</u><u> </u><u>2x – 3y = –30 –8 –3 3 8</u><u> </u><u> </u>

4 1
3 years ago
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