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2 years ago

Which expression has the same value as 7 − 6 ⋅ 3 + 2

Mathematics

2 answers:

Marianna [84]2 years ago

6 0

C, because it’s 6 times 3 in parentheses and your doing the 7 minus that plus the 2

maw [93]2 years ago

3 0

Answer:

7 − (6 ⋅ 3) + 2

Step-by-step explanation:

7 − 6 ⋅ 3 + 2

PEMDAS says we need to multiply before we add and subtract

7 − (6 ⋅ 3) + 2

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TotCo is developing a new deluxe baby bassinet. If the length of a newborn baby is normally distributed with a mean of 50 cm and

slavikrds [6]

Answer:

91.63 cm is the interior length of the bassinet to ensure that 99 percent of newborn babies will fit, with a safety margin of 15 cm on each end of the bassinet.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 50 cm

Standard Deviation, σ = 5 cm

We are given that the distribution of length of a newborn baby is a bell shaped distribution that is a normal distribution.

Formula:

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

P(X<x) = 0.99

We have to find the value of x such that the probability is 0.99

P(X < x)

$P( X < x) = P( z < \displaystyle\frac{x - 50}{5})=0.99$

Calculation the value from standard normal table, we have,

$P(z$

$\displaystyle\frac{x - 50}{5} = 2.326\\x = 61.63$

Thus, 99% of newborn babies will have a length of 61.63 cm or less.

There is a safety margin of 15 cm on each end of the bassinet

Length of bassinet =

$61+63 + 15 +15 = 91.63\text{ cm}$

6 0

3 years ago

Find the measure of a.90° b.47° c.86° d.37°

stiv31 [10]

Answer:

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

To raise money for charity, your class holds a car wash. You pay $15 for washing materials and collect $128 in donations. Can yo

Sphinxa [80]

This question seems oddly worded but i guess if you collected $128 in donations then you collected $128 for charity

8 0

3 years ago

PLS I NEED HELP I ONLY HAVE 15 MINS I BEG YOU PLEASE!! :(

HACTEHA [7]

Answer:

by 28% or 280%

not completely sure

Step-by-step explanation:

3 0

3 years ago

When finding a percent, what do you do? For example "what is 24% out of 45"

svetoff [14.1K]

We have an equation: ?/45= 24/100

Cross multiply:
100*? = 24*45
⇒ ?= 24*45/100= 10.8

24% out of 45 is 10.8~

8 0

4 years ago