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Keith_Richards [23]
3 years ago
7

Please please help Can someone write these words out its due today i need to cop&pas

Mathematics
1 answer:
frutty [35]3 years ago
7 0

Answer:

I hope you pass it (:

Step-by-step explanation:

There are many students in science class. Irene always likes to study and do homework. In all the exams he gets a hundred. Pablo never studies and doesn't like to take notes. On the exams he gets forty, fifty and thirty. Many times Sandra likes to do her homework. In the exams he gets ninety, forty and one hundred. Eduardo sometimes likes to study and do homework. In the exams he gets ninety and ninety. Javier never likes to read books. In the exams he gets forty, fifty and forty. All students are different and I like to teach science to everyone.

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What single decimal multiplier would you use to decrease by 14% followed by a 9% decrease?
xenn [34]

Answer:

the single decimal multiplier is 0.7826

Step-by-step explanation:

The computation of the single decimal multiplier is given below:

Given that

It is reduced by 14% that followed by 9% decrease

So according to this, the following calculation is required

= (1 - 0.14) × (1 - 0.09)

= 0.86 × 0.91

= 0.7826

Hence, the single decimal multiplier is 0.7826

3 0
3 years ago
Help me find Sample variance and standard deviation
AnnZ [28]
First, find the mean. You'll need it to compute the variance.

\bar x=\displaystyle\frac15\sum_{i=1}^5x_i=\dfrac{21+10+6+7+11}5=11

The variance of the sample is then computed with the formula

s^2=\displaystyle\dfrac1{5-1}\sum_{i=1}^5(\bar x-x_i)^2=\dfrac{(21-11)^2+\cdots+(11-11)^2}4=\dfrac{71}2=35.5

The standard deviation is the square root of the variance, so

s=\sqrt{35.5}\approx5.958
5 0
3 years ago
Which of the following events are disjoint?
Art [367]

Answer:

Step-by-step explanation:

We have to find out which two events are disjoint.

Two events are disjoint if both cannot happen simultaneously or Probability of both occurring is strictly 0.

a) Choose a student at random from a statistics class. Event A is that the student is a junior. Event B is that the student is a senior.

These are disjoint because a student cannot be a senior and junior both.

b) Choose a student at random from a statistics class. Event A is that the student is a psychology major. Event B is that the student is a statistics major.

Disjoint because same student cannot have psychology as well as statistics as major

c. Choose a student at random from a statistics class. Event A is that the student is at least 5'8" tall. Event B is that the student weighs at least 160 pounds.

These cannot be disjoint because there are chances for some students to be taller than 5 feet 8 inches and also having weight more than 160 lbs.

3 0
3 years ago
Find the value of x in the triangle <br> X=??
o-na [289]
25 degrees since all triangles add up to 180 56 and 99 together make 155 and subtract 180 by 155 and you get 25
5 0
3 years ago
Read 2 more answers
Quadratic and Ratios...​
lozanna [386]

Answer:

x=0

Step-by-step explanation:

in the quadratic formula to only have one solution

b^{2} -4ac=0 for ax^2+bx+c=0

so we have

ax^2+b=c

ax^2+(b-c)=0

if we insert in the formula we have

0^2-4(a)(b-c)=0\\\\-4ab+4ac=0\\\\4ac=4ab\\\\\frac{4ac}{4a} = \frac{4ab}{4a}\\\\c=b

ax^2+b=c\\\\ax^2=b-b\\\\ax^2=0 since a≠0

\frac{ax^2}{a}=\frac{0}{a}  \\\\x^2=0\\\\x=0

8 0
3 years ago
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