3 years ago

What does this mean f(5)=-10

Mathematics

1 answer:

Ghella [55]3 years ago

8 0

You have to find f. F= -2

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Solve<br>0.9(7x + 14) = 1.5 - (x + 2)

Triss [41]

$\\ \sf\longmapsto 0.9(7x+14)=1.5-(x+2)$

$\\ \sf\longmapsto 6.3x+12.6=1.5-x-2$

$\\ \sf\longmapsto 63x+12.6=-x-0.5$

$\\ \sf\longmapsto 63x+x=-0.5-12.6$

$\\ \sf\longmapsto 64x=-13.1$

$\\ \sf\longmapsto x=\dfrac{-13.1}{64}$

$\\ \sf\longmapsto x=0.2$

7 0

3 years ago

Which expression is equal to: H • 3

Vadim26 [7]

The answer is 3h.

Because 3h is like 3 x H

7 0

3 years ago

Please show your work for brainliest!!

Digiron [165]

Answer:

About 11.299 hours.

Step-by-step explanation:

To solve this problem, you can set up an equation to model the decay of the medicine. Let's call the time that medicine has been in the body x.

$(1-0.0595)^x=0.5$

$0.9405^x=0.5$

Taking the log x of both sides, you get

$x=\log_{0.9405} 0.5$

$x\approx 11.299$ hours. Hope this helps!

5 0

3 years ago

Just to make sure, does this make sense?

Bogdan [553]

Answer:

It makes sense to me but I don't know if anyone else agrees

Step-by-step explanation:

4 0

2 years ago

When 12 is added to a number the result is 32 less than 3 times a number.<br> What is this number?

neonofarm [45]

X - the number

$x+12=3x-32 \\
x-3x=-32-12 \\
-2x=-44 \\
x=\frac{-44}{-2} \\
x=22$

The number is 22.

7 0

2 years ago

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