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zubka84 [21]
3 years ago
9

Evaluate 1/3m -1-1/2n when m=21 and n =12 . How much it’s it ?

Mathematics
1 answer:
Alik [6]3 years ago
6 0

Answer:

0

Step-by-step explanation:

1/3(21) -1 -1/2(12)

7 - 1 - 1/2(12)

6 - 1/2(12)

6 - 6

0

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Given the graph of a scatterplot and a trend line, explain how you would find the equation of the trend line.
SpyIntel [72]

To find the equation of a trend line, It is important to find the X axis and Y axis, Once x axis and y axis  is found if there is an association between x axis and y axis, We use linear equation to produce the trend line. Linear regression or algorithm called as OLS (Ordinary least square). Y= mx +c

y = dependent variable, x = independent variable , constant = c , m  = y2-y1/x2-x1.

Step-by-step explanation:

  • Scatter plot is to find association of two different variable.
  • Trend line is the equation between xaxis and y axis.
  • Prediction is best way to form equation.
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5 0
3 years ago
Read 2 more answers
Each day at school, Kai records his homework assignments in a small notebook. Each page of the notebook measures 2 1/4 inches by
Katarina [22]
Area,for rectangles is length x width so 2 1/4 inches x 3 1/2 inches is 7 7/8
3 0
3 years ago
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In ΔHIJ, the measure of ∠J=90°, the measure of ∠I=29°, and JH = 88 feet. Find the length of IJ to the nearest tenth of a foot.
Nitella [24]

We have been given that in ΔHIJ, the measure of ∠J=90°, the measure of ∠I=29°, and JH = 88 feet. We are asked to find the length of IJ to the nearest tenth of a foot.

First of all, we will draw a right triangle using our given information as shown in the attachment.  

We can see that in triangle HIJ, the side IJ is adjacent side to angle I and JH is opposite side to angle I.

We know that tangent relates opposite side of right triangle to adjacent side.

\text{tan}=\frac{\text{Opposite}}{\text{Adjacent}}

\text{tan}(29^{\circ})=\frac{88}{IJ}

IJ=\frac{88}{\text{tan}(29^{\circ})}

IJ=\frac{88}{0.554309051453}

IJ=158.7562024638191237

Upon rounding to nearest tenth, we will get:

IJ\approx 158.8

Therefore, the length of the side IJ is approximately 258.8 units.

5 0
4 years ago
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Studentka2010 [4]

Step-by-step explanation:

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4 years ago
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9.9 x 10-3 in standard form.
Tema [17]

Answer:

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