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Pavel [41]
3 years ago
14

S+tx=r solve for x show steps

Mathematics
1 answer:
Elena L [17]3 years ago
6 0
X=r-s/t
1.(S+tx)+(-s)=r+(-s)
2.s+tx-s=r-s
3.s-s+tx=r-s
4.tx=r-s
5.tx/t=r-s/t
6. x=r-s/t
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A researcher collects data on the relationship between the amount of daily exercise an individual gets and the percent body fat
fredd [130]

Answer: approximately 24

Step-by-step explanation:

We need to plot a regression line.

So we fit a model using the regression of Y on X, that an equation that predict Y for a given X using:

(Y -mean(Y ))= a(X-meanX)...........1

Where the formular of a is given the attachment.

N= the of individuals = 5

Y = amount of fat

X = time of exercise

mean(X )= sum of all X /N

= 131/5 = 26.2

mean(Y) = sum of all Y/N

= 104/5 = 20.8

a = N(SXY) - (SX)(SY)/ NS(X²) -(SX)²......2

SXY = Sum of Product X and Y

SX= sum of all X

SY = Sum of all Y

S(X²)= sum of all X²

(SX) = square of sum of X

a = -0.478

Hence we substitute into 1

Y-20.8 = -0.478 (X-26.2)

Y -20.8 = -0.478X - 12.524

Y = -0.478X + 33.324 or

Y = 33.324 - 0.478X (model)

When X = 20

Y = 33.324 - 0.478 × 20

Y = 33.324 - 9.56

Y = 23. 764

Y =24(approximately)

Carefully meaning of formula used in attachment to the solution they are the same.

4 0
3 years ago
Please help for a quick, easy 20 points.
fiasKO [112]

Answer:

A is true.

B is true.

C is true.

D is false.

E is true.

F is false.

G is false.

4 0
2 years ago
What is the slope of this line
kifflom [539]

Answer:

3/4

Step-by-step explanation:

We can find the slope from the two points given

m = (y2-y1)/(x2-x1)

   = (1- -2)/(2 - -2)

    = (1+2)/(2+2)

    = 3/4

8 0
3 years ago
5. Maribel makes bead necklaces. She uses a
sleet_krkn [62]

Answer:

<u>A.  52 green beads; 39 yellow beads</u>

Step-by-step explanation:

See the attachment.  If we take the ratios of 4, 2 , and 3, they add to 9.  The

Green (G), Blue (B), and Yellow (Y) will have 4/9, 2/9 and 3/9 each of the total beads, 117.

G:  52 Beads

B:  26 Beads

Y:  39  Beads

6 0
2 years ago
Find the value of r so the line that passes through each pair of points has the given slope.
padilas [110]

Answer:

<em>- 4</em>

Step-by-step explanation:

( 3 - r ) / ( 1 + 5) = 7/6

\frac{3-r}{1+5} = \frac{7}{6} ⇒ 3 - r = 7 ⇒ r = <em>- 4</em>

7 0
2 years ago
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