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2 years ago

Plzzz helppp giving brainiest to the first one

Mathematics

2 answers:

Monica [59]2 years ago

8 0

Answer:

I’m smart UwU

Step-by-step explanation:

aniked [119]2 years ago

4 0

Answer:

Arsenic-74-is used to locate brain tumors. It has a half-life of 17.5 days. ... C. Find the amount remaining after 6 days from a 90-mg sample

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wendy is selling bags of chips. she earns $108.00 by selling 72 bags of chips. if each bag of chips is the same price, how many

stiv31 [10]

I think 84

$108.00 divided by 72 is $1.50
So 1 bag is $1.50
$126.00 divided by $1.50 is 84
So 84 bags of chips

8 0

3 years ago

In the "magic square" at the right, the four numbers

romanna [79]

Answer:

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

Members of the theater club sold tickets for the spring

Tpy6a [65]

so basically what i was thinking of was they sold them in the spring

8 0

3 years ago

The distribution of the amount of money spent by students for textbooks in a semester is approximately normal in shape with a me

zimovet [89]

Answer:

Option D) $275

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = $235

Standard Deviation, σ = $20

We are given that the distribution of amount of money spent by students is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

We have to find the value of x such that the probability is 0.975

$P( X < x) = P( z < \displaystyle\frac{x - 235}{20})=0.975$

Calculation the value from standard normal z table, we have,

$P( z < 1.960) = 0.975$

$\displaystyle\frac{x - 235}{20} = 1.960\\x =274.2 \approx 275$

Approximately 97.5% of the students spent below $275 on textbook.

7 0

3 years ago

Za and Zb are complementary angles. Za measures 28<br>What is the measure of Zb?

trasher [3.6K]

Answer:

Zb=62

Step-by-step explanation:

Two angles are complementary when they add up to 90 degrees.

90-28=62

5 0

3 years ago