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3 years ago

7th grade math help meee plzzzz

Mathematics

1 answer:

ale4655 [162]3 years ago

8 0

Answer:

-18.4 + 35.4

Step-by-step explanation:

Use the method keep; change; flip.

Keep the negative -18.4

Change the minus sign to a plus sign

Flip the -35.4 to a positive 35.4

Even though the equations are different the answer is still the same.

Hope this helps!

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When Earth, the moon, and the sun align, which order would lead to a solar eclipse?

nata0808 [166]

Answer:

Moon is between sun and earth

then:

the order is:

sun - moon - earth

4 0

3 years ago

Motorola used the normal distribution to determine the probability of defects and the number

vovangra [49]

Answer:

a.P<x<9.85 orx>10.15)=0.3174, Total defects=317.4

b.p=0.0026,total defects=2.6

c.Less of the items produced will be classified as defects.

Step-by-step explanation:

a.The standard score,z, is esentially x reduced by process mean then divided my process standard deviation.

$\mu=10,\sigma=0.15\\Therefore:-\\z=\frac{x-\mu}{\sigma}=\frac{9.85-10}{0.15}\approx-1.0\\z=\frac{x-\mu}{\sigma}=\frac{10.15-10}{0.15}\approx+1.0\\P(x10.15)=P(Z+1.0)\\=2P(Z$

Total defects=Production*Probability

=0.3174*1000

$=317.4$

b. $\mu=10,\sigma=0.05$

therefore:-

$z=\frac{x-\mu}{\sigma}=\frac{9.85-10}{0.05}\approx-3.0\\z=\frac{x-\mu}{\sigma}=\frac{10.15-10}{0.05}\approx+3.0\\\\=P(x10.15)=P(Z+3.0)\\=2P(Z$

Defects=Probability*Production

=0.0026*1000

=2.6

c.Reducing process variation results in a significant reduction in the number of unit defects.

3 0

3 years ago

A rectangular boad is 1100 millmeters long and 900 millmeters wide. what is the area of the board in square meters?

Vanyuwa [196]

Answer:

1100 mm = 1.1 m, and 900 mm = 0.9 m.

So the area is 1.1 x 0.9 = 0.99 m^2

3 0

3 years ago

submarine A is currently at a depth of 432 feet below sea level Submarine B is onky at a depth of 3/4 as much as Submarine A. Wh

alexandr402 [8]

Well you could multiply 432 by 0.75, or you can divide it by 4 and then multiply it by 3. Either way your answer is 324.

8 0

3 years ago

B. Monica's young son has two jigsaw puzzles.

Dominik [7]

Answer:

smaller=x

larger=x+26

total=90

x+x+26=90

2x=64

x=32

<h2>the smaller=32</h2><h2>the larger =58</h2>

8 0

3 years ago