All categories

2 years ago

The sum of twice a number and 15 is 9

Mathematics

2 answers:

34kurt2 years ago

4 0

$\huge \purple{\tt{Answer:}}$

Let the unknown number be x .

$\Large{\underline{\sf{According~to~question}}}$

$\sf {2x+15=9} \\\\\ \implies \sf{2x=9-15} \\\\\ \implies \sf {2x=-6}$

$\implies {\sf {x ={ \dfrac{ - 6}{2}}}} \\\\\ \implies \sf{x=-3}$

Illusion [34]2 years ago

3 0

Key word: sum

twice a number = 2n

Sum of that and 15 = 2n + 15

is = equals

Answer: 2n + 15 = 9

You might be interested in

-4(n - 6) = 12 Solve the Equation.

Romashka-Z-Leto [24]

-4(n - 6) = 12

n - 6 = -12/4 divide both sides by -4

n - 6 = -3

n = -3 + 6 add both sides by 6

n = 3

hope that helps, God bless!

3 0

3 years ago

Exploring the graph of y equals cosine Theta

irga5000 [103]

Answer: see below

Step-by-step explanation:

The coordinates on the Unit Circle are (cos, sin). Since we are focused on cosine, we only need to focus on the left side of the coordinate. The cosine value (left side) will be the y-value of the function y = cos x

Use the quadrangles (angles on the axes) to represent the x-values of the function y = cos x.

Quadrangles are: 0°, 90°, 180°, 270°, 360° (360° = 0°)

Together, the coordinates will be as follow:

$\boxed{\begin{array}{c||c|c||c}\underline{(cos,sin)}&\underline{x=angle}&\underline{y=cosx}&\underline{\quad (x,y)\quad}\\(1,0)&0^o&1&(0^o,1)\\(0,1)&90^o&0&(90^o,0)\\(-1,0)&180^o&-1&(180^o,-1)\\(0,-1)&270^o&0&(270^o,0)\\(1,0)&360^o&1&(360^o,1)\end{array}}$

8 0

2 years ago

Solve: 6/x + 23 = 1/y for y.

iris [78.8K]

Answer:

$\frac{y}{x} = \frac{6y {}^{2} }{x {}^{2} }$

3 0

3 years ago

An unknown fraction is between 0 and 1. Which is true about the equivalent percent and decimal?

monitta

Answer:

The answer is C.

Step-by-step explanation: The number between 0 and 1. Think of decimals as cents, 100 cents makes a whole. So the number will be greater than 0 but less than 100.

7 0

3 years ago

Read 2 more answers

The distance between 15 and 6 is units.

Natasha_Volkova [10]

9 is the answer 15-6 is 9

7 0

3 years ago