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3 years ago

Help please is for now

Mathematics

2 answers:

Viefleur [7K]3 years ago

4 0

Answer:

Step-by-step explanation:

fredd [130]3 years ago

4 0

Answer:

15 cm

Step-by-step explanation:

I think it is 15 cm and you don't need explanation in question so that much only

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How can i solve this question

MAXImum [283]

It is really simple. The ratio between both the triangles is 7, so you just divide 49 by 7(it gives you 7) to get the value of x. The answer is option (a) 7.

Hope This Helped!

Good Luck!

6 0

3 years ago

15 POINTS!! PLEASE HELP!!!

scoundrel [369]

Answer:

Step-by-step explanation:

Just go with it I took the class

5 0

3 years ago

Integration: How would I get to this answer?

Scrat [10]

Given that $y$ attains a maximum at $x=1$ , it follows that $y'=0$ at that same point. So integrating once gives

$\displaystyle\int\frac{\mathrm d^2y}{\mathrm dx^2}\,\mathrm dx=\int-8x\,\mathrm dx$
$\dfrac{\mathrm dy}{\mathrm dx}=-4x^2+C_1$
$\implies -4(1)^2+C_1=0\implies C_1=4$

and so the first derivative is $y'=-4x^2+4$ .

Integrating again, you get

$\displaystyle\int\frac{\mathrm dy}{\mathrm dx}\,\mathrm dx=\int(-4x^2+4)\,\mathrm dx$
$y=-\dfrac43x^3+4x+C_2$

You know that this curve passes through the point (2, -1), which means when $x=2$ , you have $y=-1$ :

$-1=-\dfrac43(2)^3+4(2)+C_2$
$\implies C_2=\dfrac53$

and so

$y=-\dfrac43x^3+4x+\dfrac53$

7 0

4 years ago

We have enough material to build a fence around a station

Sergeeva-Olga [200]

Answer:

$60ft$

Step-by-step explanation:

Use the formula for the perimeter of a rectangle.

$P=2l+2w$

$180=2l+2(30)$

$180=2l+60$

$180-60=2l$

$120=2l$

$\frac{2l}{2}=\frac{120}{2}$

$l=60$

8 0

3 years ago

Given the following exponential function, identify whether the change represents

Pavel [41]

Answer:

Step-by-step explanation:

This equation represents exponential decay. Whenever the base is less than 1, the function represents decay. When the base is greater than 1, the function represents growth. In this case, the base is .97 which is less than 1, representing decay.

The formula for exponential decay is y=a(1-r)x.

r is the decay rate, expressed as a decimal.

In this case, r = .03 which represents 3%!

7 0

3 years ago