3 years ago

????? help pls ??????

Mathematics

1 answer:

Paladinen [302]3 years ago

7 0

I believe the answer is the last one!<span />

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20. Solve the equation x2 - 17x + 72 = 0.

Rina8888 [55]

Answer:

x=8,9

Step-by-step explanation:

x^2-17x+72=0

(x-8)(x-9)=0

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3 years ago

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An educational psychologist wishes to know the mean number of words a third grader can read per minute. She wants to make an est

amid [387]

Answer:

(38.1,88.6)

Step-by-step explanation:

We are given the following in the question:

Sample mean, $\bar{x}$ = 38.3

Sample size, n = 695

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Population standard deviation, σ = 3.6

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$\mu \pm z_{critical}\frac{\sigma}{\sqrt{n}}$

Putting the values, we get,

$z_{critical}\text{ at}~\alpha_{0.05} = 1.96$

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3 years ago

Can someone help me with this?<br>1⁵ + 5² / 25⁰ - 5¹=

salantis [7]

Answer:

the answer is 21.Here is how I know

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3 years ago

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PLZZZ HELPPPP ILL MARK BRAINLIEST TO FIRST AND CORRECT ANSWER THAT HAS WORK AND A THX TO SECOND AND CORRECT ANSWER.

Verdich [7]

Answer: Your answer is A, <9 and <5

Step-by-step explanation:

YW AND PLS MARK ME A STHE NEW KING(THE BRAINIEST)

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2 years ago