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2 years ago

15

Solve for X. 3/4x+7/8=4 1/4 Enter your answer as a mixed number in simplest form in the box.

1 answer:

neonofarm [45]2 years ago

6 0

Step-by-step explanation:

$\frac{3}{4} x + \frac{7}{8} = 4 \frac{1}{4}$

$\frac{3}{4} x = \frac{17}{4} - \frac{7}{8}$

$\frac{3}{4} x = \frac{34}{8} - \frac{7}{8}$

$\frac{3}{4} x = \frac{27}{8}$

$3x \times 8 = 27 \times 4$

$24x = 108$

$x = \frac{108}{24}$

$x = \frac{9}{2}$

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I need 3 questions answered please.

kakasveta [241]

Answer:

$3) \: \: 113 {ft}^{2}$

$4) \: false$

$5) \: 70 {ft}^{2}$

Step-by-step explanation:

3) Area of a circle is

$\pi \times {r}^{2}$

Where r = 6

Thus,

$area = \frac{22}{7} \times {6}^{2}$

$area = \frac{22}{7} \times 36$

$area = 3.143 \times 36$

$area = 113 {ft}^{2} \: (nearest \: whole \: number)$

4) False

Area of a circle is measured by the formula below:

$area = \pi \times {r}^{2}$

5) The formula for calculating the area of a rectangle is given thus:

$area \: of \: a \: rectangle = l \times w$

Where, l = 10ft; w = 7ft

$area = 10ft \times 7ft = 70 {ft}^{2}$

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3 years ago

Quiz due today! Please help me. No links! 10 points

REY [17]

Answer: you have to use d=rt to figure it out. that is distance equals to rate times time

Step-by-step explanation:

hope that helps

5 0

2 years ago

Read 2 more answers

Happy finds and keeps change she finds around her house recently she learned she has all nickels and quarters she has twice as m

alex41 [277]

Answer:

happy has 25 quarters in total

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3 years ago

The amount A of the radioactive element radium in a sample decays at a rate proportional to the amount of radium present. Given

slavikrds [6]

Answer:

a) $\frac{dm}{dt} = -k\cdot m$ , b) $m(t) = m_{o}\cdot e^{-\frac{t}{\tau} }$ , c) $m(t) = 10\cdot e^{-\frac{t}{2438.155} }$ , d) $m(300) \approx 8.842\,g$

Step-by-step explanation:

a) Let assume an initial mass m decaying at a constant rate k throughout time, the differential equation is:

$\frac{dm}{dt} = -k\cdot m$

b) The general solution is found after separating variables and integrating each sides:

$m(t) = m_{o}\cdot e^{-\frac{t}{\tau} }$

Where $\tau$ is the time constant and $k = \frac{1}{\tau}$

c) The time constant is:

$\tau = \frac{1690\,yr}{\ln 2}$

$\tau = 2438.155\,yr$

The particular solution of the differential equation is:

$m(t) = 10\cdot e^{-\frac{t}{2438.155} }$

d) The amount of radium after 300 years is:

$m(300) \approx 8.842\,g$

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3 years ago

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Robert buys clothing for work for $76.88 cents. How much will his total bill be if the tax rate in his area is 7%?

dybincka [34]

It will be 84.40 I hope this helped

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2 years ago