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spayn [35]
3 years ago
12

-4/3y+-2=15what is the answer

015" id="TexFormula1" title=" \frac{ - 4}{3} y + - 2 = 15" alt=" \frac{ - 4}{3} y + - 2 = 15" align="absmiddle" class="latex-formula">
Mathematics
1 answer:
irina1246 [14]3 years ago
7 0
-\dfrac{4}{3} y + (- 2) = 15

Evaluate the + ( -) to give - :
-\dfrac{4}{3} y - 2 = 15

Add 2 on both sides:
-\dfrac{4}{3} y= 15 + 2

Evaluate the Right Hand Side:
-\dfrac{4}{3} y= 17

DIvide by -3 on both sides:
4 y= 17 \times (-3)

Evaluate the Right Hand Side:
4 y= -51

Divide by 4 on both sides:
y = -\dfrac{51}{4}

Simplify to mixed fraction:
y = -12\dfrac{3}{4}
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the results of a poll indicate that between 33% and 37% of the population of a town visit the library at least once a year. what
Vera_Pavlovna [14]

The margin of error is ±2%

<h3>What is Margin error?</h3>

A margin of error is a statistical measurement that accounts for the difference between actual and projected results in a random survey sample.

Let x be margin of error and y be the percentages of the population.  

So,

y-x =33%

y +x = 37%

Solving above equations

2y= 70

y= 35%

and x= 2%

Hence, the margin of error is ±2%.

Learn more about this concept here:

brainly.com/question/11421935

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6 0
2 years ago
Can dilations be used to form scale copies of a figure?
Inessa [10]

Answer:

sometimes

Step-by-step explanation:

There are several ways that dilation is used in real life. Here are several:

In graphic design. I actually do some graphic design, and I use dilation a lot. It is common to dilate photos to fit the space that you want it to fit.

In police work and crime investigation. Detectives and police dilate photos to see smaller details and evidence.

In architecture. It is normal for architects to make a prototype of their design or building. In order to make the building true to the prototype, they must dilate the scale and measurements.

In the doctor's office. Dilation is used in eye exams so that the eye doctor can view the patient's eye better. After a while it will slowly reduce in size and return back to normal.

3 0
1 year ago
Evaluate the expression and enter your answer in the box below |98|
olganol [36]

Hi student, let me help you out! :)

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . . . . . . . . . . . . . . . . . . . . . . . .

We are asked to evaluate \pmb{|98|}.

\triangle~\fbox{\bf{KEY:}}

  • The notation |x| denotes absolute value.

The absolute value of a number is its distance from zero.

Absolute value is always positive; distances can't be negative, right?

So we need to find the absolute value of 98, which is:

\star~\star\mathrm{98}~\star~\star

\ddot\bigstar Remember this...

\fbox{The\;absolute\;value\;is\;a\;number's\;distance\;from\;zero}

Hope it helps you out! :D

Ask in comments if any queries arise.

#StudyWithBrainly

~Just a smiley person helping fellow students :)

3 0
1 year ago
Answers please ? I need help on all of them.
Allushta [10]
Well to answer question 43, you would have to multiply the radius but 2 so 8*2= 16 and 16* 3.14= 50.24
ANSWER: 50.24
5 0
3 years ago
What is the surface area of this square pyramid
JulsSmile [24]

Answer:

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A = area of 4 triangles + area of square

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=> Option 4 (last one) is correct

Hope this helps!

:)

3 0
3 years ago
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