3 years ago

15 decreased by twice a number algebraic expression?

Mathematics

2 answers:

Reil [10]3 years ago

5 0

$x-\ number\\\\twice\ a\ number:\\2x \\\\ Write\ it\ as\ a \ function: \\y=15-2x$

labwork [276]3 years ago

4 0

15-2x
A number is a variable so use a letter like x for them

You might be interested in

The figure below shows a shaded circular region inside a larger circle: A shaded circle is shown inside another larger circle. T

Taya2010 [7]

Area of larger circle: 3.14 x 5^2 = 78.5

Area of small circle: 3.14 x 2^2 = 12.56

Difference of the 2 areas: 78.5 - 12.56 = 65.94

Probability of being in large circle but not small circle: 65.94 / 78.5 = 0.84 = 84%

The answer is A) 84%

3 0

3 years ago

Read 2 more answers

If 7x+3=24 what is the value of 5-4x?

sleet_krkn [62]

If 7x+3=24, that means x would be 3 so if you take 5-4x then that would be -7.

5 0

3 years ago

Read 2 more answers

At the circus, a clown is shot from a cannon. This situation can be modeled by the function: h = – 16t2 + 45t + 15, where 'h' is

weeeeeb [17]

Answer:

The maximum height is 46.64 feet.

Step-by-step explanation:

If we take the derivative of h whit respect to t and equal this to zero we would find the value of t which corresponds to the maximum h.

So, we have the function h(t):

$h(t)=-16t^{2} + 45t + 15$

Taking the derivative, we have:

$\frac{dh(t)}{dt}=-32t + 45=0$

Now, we solve it for t:

$t=\frac{45}{32}=1.4\: s$

Finally, we put this value of t into the original equation.

$h(t)=-16(1.4)^{2} + 45(1.4) + 15$

$h_{max}=46.64\: ft$

Therefore, the maximum height is 46.64 feet. All the given options are wrong, the one that comes closest is option A.

I hope it helps you!

4 0

3 years ago

7x+8x(9y-) respondaa por favorzinho

poizon [28]

Answer:

7x+72xy

Step-by-step explanation:

7x+8x(9y)=7x+72xy

3 0

2 years ago

Read 2 more answers

With direct variation, if you increase the input, the output

sladkih [1.3K]

Increases proportionally. (C)

4 0

3 years ago