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3 years ago

Find the value of x.

Mathematics

1 answer:

tresset_1 [31]3 years ago

5 0

Answer:

Step-by-step explanation:

because its squared 5 but 5 regular is almost 4 if u look at bottom theres 4 so x is 5

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Negitive 78 squared plus 3 a minus 9 minus 5 8th squared minus 6 a minus 4

Lorico [155]

Answer:

-6125

Step-by-step explanation:

negative 78 squared = -6084

-6084 + 3 - 9 = -6090

-6090 - 5 squared minus 6 minus 4 = --6125

I got confused by "8th" and "a minus" do you mean 3a, and 6a?

6 0

3 years ago

If $x$ and $y$ are positive real numbers for which $(x + y)^2 + (x - y)^2 = 10$ and $(x + y)^4 + (x - y)^4 = 98$, what is the va

slava [35]

$(x+y)^2+(x-y)^2=10$
$\implies 2x^2+2y^2=10$
$\implies x^2+y^2=5$
$\implies (x^2+y^2)^2=x^4+2x^2y^2+y^4=25$

$(x+y)^4+(x-y)^4=98$
$\implies 2x^4+12x^2y^2+2y^4=98$
$\implies x^4+6x^2y^2+y^4=49$
$\implies 25+4x^2y^2=49$

$4x^2y^2=24$
$\implies x^2y^2=6$
$\implies xy=\sqrt6$

6 0

4 years ago

Round the number 24.9652 to 1 decimal place

ki77a [65]

Answer: 25.0

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Complete this sentence. If volume remains the same while the mass of a substance ________, the density of the substance will____

Natasha_Volkova [10]

Since the
density =mass /volume
if volume is constant we can rewrite the density equation as
volume=mass / density
since volume is just a constant
c*density=mass
where c is some constant that denotes the constant volume
mass and density will be proportional to each other or in other words will be have exactly in the same way if one increase the other will increase if one decreases the other will decrease if one stays constant the other will stay constant
only the fourth choice satisfies the proportionality condition so it must be the correct choice

4 0

3 years ago

Find the least value, greatest value, mean, median, mode, and range of the data in the stem-and-leaf plot.

Anon25 [30]

Answer:

Mean-17

Median-3

Mode-3

Range-47

Greatest Value-47

Least Value-0

Step-by-step explanation:

Mean= Add every number up then divide by how many numbers there are

Median= It has an even number in total when ordered from least to greatest. So take the two middle numbers together and divide them by 2.

Mode= The number that occurs more often

Range= The difference between the highest and the lowest number.

47-0=47

Greatest and lowest value= the highest and lowest number in a data set.

8 0

4 years ago