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3 years ago

0+4=? Help will be needed here

Mathematics

2 answers:

Romashka [77]3 years ago

8 0

Answer:

you add a 0 to the four and boom

If you are really asking, then the answer is still 4

hjlf3 years ago

5 0

Answer:

4 is the correct answer

hope it is helpful to you

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The probability of rolling a fair die and not getting an outcome less than 3 is

slavikrds [6]

Is the answer suppose to be in a percentage?

3 0

3 years ago

The shear strength of each of ten test spot welds is determined, yielding the following data (psi).

Mumz [18]

Answer:

a) Mean = 382.3 psi

Standard deviation = 20.8 psi

b) 392.7 psi

c) P(X<400)=0.8026

Step-by-step explanation:

a) The population mean can be estimated as equal to the mean of the sample, and the population standard deviation can be estimated from the sample standard deviation:

$M=\frac{1}{n}\sum x_i=\frac{1}{10}(389+405+409+367+358+415+376+375+367+362)\\\\M=\frac{1}{10}(3823)=382.3\\\\\mu\approx M=382.3$

$s=\sqrt{\frac{1}{n-1}\sum (x_i-M)^2}=\sqrt{\frac{1}{10-1}(389-382.3)^2+...+(362-383.2)^2}\\\\\\s=\sqrt{\frac{1}{9}(3906.1)}=\sqrt{434}=20.8\\\\\\\sigma\approx s=20.8$

b) We start by searching for the z-value for the 95th percentile. This value is

z=1.645:

$P(z$

Then, the strength value below which 95% of all welds will have their strengths is:

$X=\mu+z\cdot \sigma/\sqrt{n}=382.3+1.645*20.8/\sqrt{10}\\\\X=382.3+32.9/3.2=382.3+10.4\\\\X=392.7$

c) We calculate the probability of X being equal or less than 400 as:

$z=(X-\mu)/\sigma=(400-382.3)/20.8=17.7/20.8=0.851\\\\\\P(X\leq400)=P(z$

6 0

3 years ago

Help please I need it!!

Grace [21]

First find the slope of A.

Slope=(y2-y1)/(x2-x1)=(4-0)/(0--7)=4/7

For a line to be perpendicular to line A, it must have a slope that is the negative reciprocal of the slope of A. Mathematically:

m1*m2=-1 and in this case the perpendicular line will have a slope of:

4m/7=-1

4m=-7

m=-7/4

So the slope of the line perpendicular to A is -7/4

4 0

4 years ago

How do I do fractions and comparing them

RUDIKE [14]

You could turn the fraction into a decimal and then see which is bigger

5 0

3 years ago

Read 2 more answers

The ratios of corresponding sides in the two triangles

Ratling [72]

Answer:

2nd Choice

Step-by-step explanation:

because in SAS, we use 2 sides and the angle between them

5 0

3 years ago