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3 years ago

Pretty easy! help pls!

Mathematics

1 answer:

Kobotan [32]3 years ago

8 0

Answer:

ok C

Step-by-step explanation:

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How do you solve -10x+2(3x+5)=-2x? <br>4(5x-12)-7x=5x?

Serjik [45]

For the first one I got X=5
and for the second one I got X=6

6 0

3 years ago

An animal park has lions, tigers and zebras. 20% of the animals are lions and half of the animals are zebras. If there are 120 a

RoseWind [281]

Answer:

$36\ tigers$

Step-by-step explanation:

Let

x ----> the number of lions

y ----> the number f tigers

z ----> the number of zebras

we know that

$x+y+z=120$ ----> equation A

Remember that

$20\%=20/100=0.20$

$50\%=50/100=0.50$

To find out the number of lions, multiply the total animals by the percentage of lions

$x=0.20(120)=24\ lions$

To find out the number of zebras, multiply the total animals by the percentage of zebras

$z=0.50(120)=60\ zebras$

Substitute the value of x and the value of z in equation A and solve for y

$24+y+60=120$

$y+84=120$

$y=36\ tigers$

6 0

3 years ago

2over 3 of all your books are fiction. 1/6 of those are historical fiction. What fraction of all your books are historical ficti

victus00 [196]

1/3=0.33
2/3 = 0.66
3/3 is 0.99 or round to 1
1/6 =0.166
83/500

7 0

3 years ago

For the graph, which are possible functions ƒ, g, and h?

lesya692 [45]

Answer:

The third option is correct

$\displaystyle h(x)=\left ( \frac{10}{3} \right )^x$

$\displaystyle g(x)=\left ( \frac{7}{4} \right )^x$

$\displaystyle f(x)=\left ( \frac{9}{8} \right )^x$

Step-by-step explanation:

Exponential function

The exponential function is usually expressed as

$f(x)=Cr^{kx}$

If both C and k are positive, then f is increasing in all of its domain. Same happens if both are negative. They all have one point in common: (0,C)

The graph shows three functions, all increasing and in all of them (given the options for the answer) have C=1 and k=1, so the equation for each one is

$f(x)=r^{x}$

When x=1, f(1)=r lets us know the value of r

From the graph we can see that the value of r is the greatest for h(x). The next value of r is that one for g(x). Finally, f(x) has the smallest r. That means that

$h(1)>g(1)>f(1)$