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3 years ago

Please Help me I will give you the brain thing and extra points please please hurry

Mathematics

1 answer:

lana66690 [7]3 years ago

5 0

Answer:

oloooooollooooll

Step-by-step explanation:

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What number is exactly halfway between 1000 and 1500?

Lunna [17]

$the \ number \to \frac{1000+1500}{2}=\frac{2500}{2}\to\boxed{\boxed{1250}}$

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3 years ago

Read 2 more answers

I need help! Number 7 pls

Ronch [10]

I think that it's 54.6

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3 years ago

What is<br><br> 2/10 = 5n + 6/n - 8

Rina8888 [55]

Answer:

The equation has no answer :(

Step-by-step explanation:

As written (and I'm not sure you wrote it properly) the equation has no answer. Check it out.

https://simplisico.com/share/q/fjr1PEtS7d0srDFeqPU5RQaS

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4 years ago

One side of a triangle is increasing at a rate of 9 cm/s and a second side is decreasing at a rate of 2 cm/s. if the area of the

LenKa [72]

Use the attached figure to guide yourself through the explanation. In the figure:
$a=21cm, b=36cm, \widehat{C}=\frac{\pi}{6}$ .
We know that:
$\frac{da}{dt}=9,\frac{db}{dt}=-2$
Also remmeber that the area of a triangle is:
$A=\frac{Base\times Height}{2}$
The hegiht is shown in the figure in red, the base is just the b side.
Using the angle C the area of the triangle is:
$A=\frac{1}{2}ab\cos(\widehat{C})\implies2A=ab\cos(\widehat{C})$
Now taking the derivative of the area 2A with respect to t we have:
$2\frac{dA}{dt}=b\cos(\widehat{C})\frac{da}{dt}+a\cos(\widehat{C})\frac{db}{dt}-ab\sin(\widehat{C})\frac{d\widehat{C}}{dt}$

Replacing with the right values:
$\frac{dA}{dt}=0\\
\\
\cos({\widehat{C}})=\frac{\sqrt{3}}{2}\\ \\
\sin({\widehat{C}})=\frac{1}{2}\\ \\

$
yields:
$0=36\frac{\sqrt{3}}{2}.9-21\frac{\sqrt{3}}{2}.2-\frac{1}{2}.21.36.\frac{d\widehat{C}}{dt}\implies \frac{d\widehat{C}}{dt}=\frac{141}{378}\sqrt{3}$

5 0

4 years ago

What is the image of (1, 8) after a dilation by a scale factor of 5 centered at the origin

adell [148]

Answer:

(5,40)

Step-by-step explanation:

(x,y) scaled by a factor of z is (x*z,y*z)

(1,8) scaled by a factor of 5 is (5,40)

7 0

4 years ago