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dolphi86 [110]
3 years ago
13

Solve the equation. −2 1/4=r−4/5 will give brainiest for the first correct answer!!!

Mathematics
1 answer:
STatiana [176]3 years ago
6 0

Answer:

r = -1 9/20

Step-by-step explanation:

-2 1/4 = r - 4/5

Switch sides:

r - 4/5 = -2 1/4

Add 4/5 to both sides.

r = -2 1/4 + 4/5

Change the mixed numeral into a fraction:

r = -9/4 + 4/5

The LCD is 20.

r = -45/20 + 16/20

r = -29/20

r = -1 9/20

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This is an arithmetic series with first term a1 = 3 and common difference = 3

Sum after 365 days  = (365/2)[ 2*3 + (365-1)*3]

=  200,385 pennies  = $2003.85 Answer



5 0
2 years ago
in an exam 90% students passed if the 15 student fail find the number of students appeared in the examination​
Oliga [24]

Answer:

150

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2 years ago
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Lunna [17]

Answer:

B. AA

Step-by-step explanation:

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4 0
2 years ago
a solid sphere is cut into 3 equal wedges. the volume of each wedge is V=4/9π^3. solve the formula for r
algol13

\\ \qquad\quad\sf{:}\dashrightarrow V=\dfrac{4}{9}πr^3

  • It is one third of the solid. sphere

\\ \qquad\quad\sf{:}\dashrightarrow V_{(Sphere)}

\\ \qquad\quad\sf{:}\dashrightarrow 3\left(\dfrac{4}{9}πr^3\right)

\\ \qquad\quad\sf{:}\dashrightarrow \dfrac{4}{3}\pi r^3

Now

\\ \qquad\quad\sf{:}\dashrightarrow \pi r^3=\dfrac{3V}{4}

\\ \qquad\quad\sf{:}\dashrightarrow r^3=\dfrac{3V}{4\pi}

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4 0
3 years ago
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Step-by-step explanation:

3(-8m-1) + 5(m+8) (remove the parentheses)

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3 years ago
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