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3 years ago

Please help me with this math

Mathematics

1 answer:

s2008m [1.1K]3 years ago

4 0

Ur screwed lol good luck

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Five times the sum of a number and 3 is the same as 3 multiplied by 1 less than twice the number

Aneli [31]

Answer:-2

Step-by-step explanation:

(n + 3) 5 = 3 x 1 - n

distribute so 5n + 15= 3 - n

subtract three from both sides

5n - 12 = -n

subtract 5n from both sides

12 = −6n

Divide both sides by -6

n=-2

7 0

3 years ago

Evaluate the following expression. 6^-3

Liono4ka [1.6K]

Answer:

.0046, if you mean the -3 to be an exponent

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

3. Angles X and Y have a sum of 159 degrees. Angle X is 43 degrees smaller than angle Y.

Lesechka [4]

$\underline{\underline{\large\bf{Solution:-}}}\\$

$\longrightarrow$ Since angle X and Y have a sum of 159

$\implies \bf Y + X= 159 \_\_\_\_(1)$

$\longrightarrow$ Since X is 43 degrees smaller than Y , so subtracting X from Y would give 43 , therefore equation will be written as -

$\implies \bf Y - X = 43 \_\_\_\_(2)$

Adding Equation (1) and (2) 

$\begin{gathered}\\\implies\quad \sf Y+X+Y-X = 159+43 \\\end{gathered}$

$\begin{gathered}\\\implies\quad \sf Y+Y + X-X = 202 \\\end{gathered}$

$\begin{gathered}\\\implies\quad \sf 2Y = 202 \\\end{gathered}$

$\begin{gathered}\\\implies\quad \sf Y = \frac{202}{2} \\\end{gathered}$

$\begin{gathered}\\\implies\quad \boxed{\sf {Y = 101 }} \\\end{gathered}$

Putting Y in eq (1)

$\begin{gathered}\\\implies\quad \sf X + 101 = 153 \\\end{gathered}$

$\begin{gathered}\\\implies\quad \sf X = 153-101 \\\end{gathered}$

$\begin{gathered}\\\implies\quad \boxed{\sf{ X = 52 }}\\\end{gathered}$

5 0

2 years ago

The volume of air inside a rubber ball with radius r can be found using the function V(r)= 4/3pier^3 what does V(5/7) represent?

CaHeK987 [17]

Answer:

Step-by-step explanation:

I can tell you what it represents, but not what it means. Or maybe the units.

V(5/7) means that wherever you see an r on the right hand side, you put in 5/7 where the R is.

V = 4/3 * pi * r^3

V(5/7) = 4/3 * 3.14 * (5/7)^3

V(5/7) = 4/3 * 3.14 * 125 / 343

V(5/7) = 4/3 * 3.14 * 0.3644

V(5/7) = 1.526 cubic units (of whatever the units of 5/7 were to begin with)

6 0

3 years ago

(fog)(x). Find(fog)(x) f(x)=2x-10 g(x)=4x+5

melisa1 [442]

Answer:

Find(fog)(x)

f(x)=2x-10

g(x)=4x+5

Step-by-step explanation:

hello :

(fog)(x) =f(g(x)) = f(4x+5) = 2(4x+5)-10 = 8x+10-10

(fog)(x) =8x

4 0

3 years ago