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4 years ago

I WILL GIVE BRAINLY IF 2 PEOPLE ANSWER! I spent 3/4 of my money and then I spent 1/5 of what was left.

Mathematics

2 answers:

harina [27]4 years ago

6 0

Answer:

0.55

Step-by-step explanation:

Advocard [28]4 years ago

3 0

Answer:

1/20 or 0.05

Step-by-step explanation:

Make common denominators

3/4 --Multiply by 5/5--> 15/20

1/5 --Multiply by 4/4--> 4/20

Then apply to the problem

3/4 spent means 1/4 left

15/20 ---> 5/20 left

Then they spend 1/5 (4/20) of what they have left

(5/20) x (4/20) = 20/400

Simplify

1/20 or 0.05

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How to write 1000= in Exponential form

Nadusha1986 [10]

Answer:

10x^{3}[/tex]

Step-by-step explanation:

$10x^{3}$

=10·10·10

=1000

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3 years ago

Read 2 more answers

The point P(7, −2) lies on the curve y = 2/(6 − x). (a) If Q is the point (x, 2/(6 − x)), use your calculator to find the slope

NARA [144]

Answer:

a) (i) $m = 2.22$ , (ii) $m = 2$ , (iii) $m = 2$ , (iv) $m = 2$ , (v) $m = 1.82$ , (vi) $m = 2$ , (vii) $m = 2$ , (viii) $m = 2$ ; b) $m \approx 2$ ; c) The equation of the tangent line to curve at P (7, -2) is $y = 2\cdot x + 12$ .

Step-by-step explanation:

a) The slope of the secant line PQ is represented by the following definition of slope:

$m = \frac{\Delta y}{\Delta x} = \frac{y_{Q}-y_{P}}{x_{Q}-x_{P}}$

(i) $x_{Q} = 6.9$ :

$y_{Q} =\frac{2}{6-6.9}$

$y_{Q} = -2.222$

$m = \frac{-2.222 + 2}{6.9-7}$

$m = 2.22$

(ii) $x_{Q} = 6.99$

$y_{Q} =\frac{2}{6-6.99}$

$y_{Q} = -2.020$

$m = \frac{-2.020 + 2}{6.99-7}$

$m = 2$

(iii) $x_{Q} = 6.999$

$y_{Q} =\frac{2}{6-6.999}$

$y_{Q} = -2.002$

$m = \frac{-2.002 + 2}{6.999-7}$

$m = 2$

(iv) $x_{Q} = 6.9999$

$y_{Q} =\frac{2}{6-6.9999}$

$y_{Q} = -2.0002$

$m = \frac{-2.0002 + 2}{6.9999-7}$

$m = 2$

(v) $x_{Q} = 7.1$

$y_{Q} =\frac{2}{6-7.1}$

$y_{Q} = -1.818$

$m = \frac{-1.818 + 2}{7.1-7}$

$m = 1.82$

(vi) $x_{Q} = 7.01$

$y_{Q} =\frac{2}{6-7.01}$

$y_{Q} = -1.980$

$m = \frac{-1.980 + 2}{7.01-7}$

$m = 2$

(vii) $x_{Q} = 7.001$

$y_{Q} =\frac{2}{6-7.001}$

$y_{Q} = -1.998$

$m = \frac{-1.998 + 2}{7.001-7}$

$m = 2$

(viii) $x_{Q} = 7.0001$

$y_{Q} =\frac{2}{6-7.0001}$

$y_{Q} = -1.9998$

$m = \frac{-1.9998 + 2}{7.0001-7}$

$m = 2$

b) The slope at P (7,-2) can be estimated by using the following average:

$m \approx \frac{f(6.9999)+f(7.0001)}{2}$

$m \approx \frac{2+2}{2}$

$m \approx 2$

The slope of the tangent line to the curve at P(7, -2) is 2.

c) The equation of the tangent line is a first-order polynomial with the following characteristics:

$y = m\cdot x + b$

Where:

$x$ - Independent variable.

$y$ - Depedent variable.

$m$ - Slope.

$b$ - x-Intercept.

The slope was found in point (b) (m = 2). Besides, the point of tangency (7,-2) is known and value of x-Intercept can be obtained after clearing the respective variable:

$-2 = 2 \cdot 7 + b$

$b = -2 + 14$

$b = 12$

The equation of the tangent line to curve at P (7, -2) is $y = 2\cdot x + 12$ .

7 0

3 years ago

Sales Tax in the state of Mathland is 8.5%. After buying school supplies, your total was $81.42, before tax. How much do you end

Lapatulllka [165]

Answer:

Step-by-step explanation:

8.5% of 81.42

8.5 81.42 692.07

------- X ---------- = -------------

100 1 100

divide 692.07/100 which gives you 6.9207

if you round it to the nearest hundredth you get 6.92

7 0

3 years ago

As front passed,the temperature changed steadily over 6 hours. altogether it changed -18 degrees. what was the change in tempera

Anettt [7]

The temperature changed steadily over the 6 hours, which means that it changed the same amount of degrees every hour. It changed -18 degrees in 6 hours.
Divide the temperature change by the number of hours.
-18 ÷ 6 = -3
The change in temperature per hour is -3°.

5 0

3 years ago

Savannah drove 716 miles on Monday. She drove another 572 miles one Tuesday. About how many more miles did she drive on Monday t

icang [17]

Answer:

Step-by-step explanation: Savannah drove 264 more miles on Monday than Tuesday because 716 minus 572 is 264.

4 0

3 years ago