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3 years ago

30 points (: marking brainly to the person that gets all 4 correct !!!

Mathematics

2 answers:

MAVERICK [17]3 years ago

5 0

Answer:

3y^4√3

3. x^8y^18

4.x^50y^8

5.10y^4√3y

Step-by-step explanation:

hope this helps pls mark is brainliest

inessss [21]3 years ago

4 0

Answer:

283.70030957

Step-by-step explanation:

hope this helps

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Find the slope of the line (-3,-3) (1,1)

Volgvan

Answer: The slope is m = 1

Step-by-step explanation:

-To find the slope, you need the slope formula:

$m=\frac{y2-y1}{x2-x1}$ where you have $(x1,y1)$ and $(x2,y2)$ on the equation.

-Next, you put the two points to the equation:

$m=\frac{1+3}{1+3}$

-And then you solve the equation:

$m=\frac{1+3}{1+3}$

$m=\frac{1+3}{1+3} = \frac{4}{4}=1$

$m=1$

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Half of the students in a freshman class are 14 years old. One-third are 15 and the rest are 13. Is the mean age greater than

Allisa [31]

the mean age is greater than the median age.

8 0

2 years ago

The length of one leg of an isosceles right triangle is 7 units. What is the length of the hypotenuse?

Westkost [7]

Given that the hypotenuse of the isosceles right triangle
=
14
,
⇒
the length of each leg
=
14
√
2
=
7
√
2
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(
7
√
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√
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)
2
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2 years ago

A person invest $1200 in an account that earns 2% interest compound quarterly. Find when the value of the investment reaches $15

Basile [38]

Answer:

After 11 years the value of the investment reaches $1500.00

Step-by-step explanation:

The formula used for finding time (when the value reaches certain amount) is:

$A= P(1+\frac{r}{n})^{nt}$

where A= Future VAlue

P= Principal Value

r= rate of interest (in decimal)

n= no of times investment is compounded

t= time

Putting the values given and finding Time t,

A= $1500

P= $1200

r= 2% or 0.02

n= 4 (compound quarterly)

$A= P(1+\frac{r}{n})^{nt}$

$1500= 1200(1+\frac{0.02}{4})^{4t}$

Dividing both sides by 1200 and solving 0.02/4 = 0.005

$1.25= (1+0.005)^{4t}$

$1.25= (1.005)^{4t}$

Since t is in power we take the logarithm ln on both sides.

The rule of logarithm says that the exponent can be multiplied with the base when taking log

$\ln1.25=ln( 1.005)^{4t}\\\ln1.25=4t * ln( 1.005)\\0.22 = 4t * 0.005\\Solving\,\,\\\frac{0.22}{4*0.005} = t\\=> t= 11\, years$

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3 years ago