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3 years ago

Can someone help me please !! I’m so confused Thank you

Mathematics

1 answer:

sergiy2304 [10]3 years ago

5 0

Answer:

I have no idea if this would be right but I am guessing (for the 1/5 one) if you put 5 different colored marbles in a container and wanted to pull out a red one. You can also do this for the 1/10 one just use a different object.

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Which expression is equivalent to 4 (9 + 7)

Bad White [126]

4(9+7) = 36+28 = 64

open the parentheses, then simplify.

8 0

2 years ago

According to records in a large hospital, the birth weights of newborns have a symmetric and bell-shaped relative frequency dist

Kamila [148]

Answer:

15.9% of babies are born with birth weight under 6.3 pounds.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 6.8 pounds

Standard Deviation, σ = 0.5

We are given that the distribution of birth weights is a bell shaped distribution that is a normal distribution.

Formula:

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

P(birth weight under 6.3 pounds)

P(x < 6.3)

$P( x < 6.3) = P( z < \displaystyle\frac{6.3 - 6.8}{0.5}) = P(z < -1)$

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

$P(x < -1) = 0.159 = 15.9\%$

15.9% of babies are born with birth weight under 6.3 pounds.

8 0

3 years ago

1) Write 4 ratios, using the scaling<br> down method, that are equivalent to<br> 48 to 60

kow [346]

Answer:

96 to 120

24 to 30

12 to 15

6 to 7.5

6 0

2 years ago

Which Expression is the best estimate of 1 1/5 x 3 2/3?

Pavel [41]

The best estimate would be 121/15 = 8.1

4 0

3 years ago

Read 2 more answers

ILL GIVE BRAINELST

murzikaleks [220]

Answer:

A = 12 ft

Step-by-step explanation:

Perimeter ( of SQUARE) B = 64

then each side = 64/4 = 16

AREA of SQUARE C = 400

side X side = 400

then side = sqrt 400

Now use Pyhtagorean Theorem to find leg of right triangle that is

side A Side B hypotenuse Side C

A^2 + 16^2 = (sqrt 400)^2

A^2 = 400 - 256

A^2 = 144 then A = 12 Ft

6 0

2 years ago