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viva [34]
4 years ago
11

Tim is reading a book. On Monday he reads 3 pages. On each day after that, he reads 3 times the number of pages that he read on

the previous day. How many pages does he read on Thursday?
Mathematics
2 answers:
ikadub [295]4 years ago
7 0
3*3=9 9*3=27 27*3=81

81 Pages.
Andre45 [30]4 years ago
4 0
To solve this, let's make a "chart"

Monday : 3 pages
Tuesday : 3 x 3 = 9 pages
Wednesday : 9 x 3 = 27 pages
Thursday : 27 x 3 = 81 pages

Alternatively, you can say 3^4 (since we are dealing with 4 days), and that would also equal 81 pages

Therefore, he reads 81 pages on Thursday.
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vichka [17]
The lengths of the rectangles are 7 and 12 respectively.  Form the ratio 7/12.  The widths of the rects. are x and 5 respectively.  Form the ratio x/5.  Now equate these two ratios:

7       x
--- = ---
12     5

Solve this for x.  One way to do this would be to cross-multiply, obtaining 12x = 35, and solving this result for x.  x will be a fraction.  Write the numerator and denominator in the boxes given.
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3 years ago
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X is greater than or equal to 67

1000/15 =66.6 =67
6 0
3 years ago
Find the extreme values of f(x y)=xy subject to the constraint x^2 + y^2 -4 = 0
KATRIN_1 [288]
Via Lagrange multipliers:

L(x,y,\lambda)=xy+\lambda(x^2+y^2-4)

L_x=y+2\lambda x=0
L_y=x+2\lambda y=0
L_\lambda=x^2+y^2-4=0

yL_x=y^2+2\lambda xy=0
xL_y=x^2+2\lambda xy=0
\implies yL_x-xL_y=y^2-x^2=0\implies y^2=x^2
\implies x^2+y^2=4=2x^2\implies x^2=2\implies x=\pm\sqrt2\implies y=\pm\sqrt2

So we have four critical points to consider, (\sqrt2,\sqrt2),(-\sqrt2,\sqrt2),(\sqrt2,-\sqrt2),(-\sqrt2,-\sqrt2). If both coordinates are positive or both are negative, we get a maximum value of (\pm\sqrt2)^2=2; otherwise, we get a minimum of (-\sqrt2)(\sqrt2)=-2.
4 0
3 years ago
Y=x+3<br> y=3x+1<br><br> A. (1,3)<br> B. (0,1)<br> O C. (0,3)<br> D. (1.4)
guajiro [1.7K]

Answer:

D: (1, 4)

Step-by-step explanation:

You can either solve by substitution or elimination. If you are timed, the fastest way is to guess and check (plug-in the answer choices)

I will be using substitution to solve this:

Step 1: Since you have y already, you can set them equal to each other

x+3 = 3x+1

3 = 2x +1

2 = 2x

x = 1

Step 2: Now you have x, plug x into one of the original equations. In this case, I will use the first one

y = 1 + 3

y = 4

Step 3: Now write your answer as a coordinate plane point

x = 1, y = 4

(1, 4)

6 0
3 years ago
Read 2 more answers
A. Plot 13.58 on a number line on which the long
Lerok [7]

Answer:

Se attached for plots and here is position of the numbers:

a. Plot 13.58 on a number line on which the long

tick marks are whole numbers.

  • 13 < 13.58 < 14

b. Plot 0.193 on a number line on which the long

tick marks are tenths.

  • 0.1 < 0.193 < 0.2

c. Plot 26.9999 on a number line on which the

long tick marks are thousandths.

  • 26.999 < 26.9999 < 27.000

4 0
3 years ago
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