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2 years ago

10 x squared y + 6 x squared minus 7 y squared minus 6

Mathematics

1 answer:

mote1985 [20]2 years ago

4 0

The computation of the function will be 10x²y + 6x² - 7y² - 6.

<h3>How to calculate the value?</h3>

It should be noted that a function is simply used to illustrate the relationship between two variables.

It should be noted that the information given is:

10 x squared y + 6 x squared minus 7 y squared minus 6. This will be:

10x²y + 6x² - 7y² - 6

Therefore, the computation of the function will be 10x²y + 6x² - 7y² - 6.

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Can someone help me with my quadratics and equations questions? I need to show my work :)

Dvinal [7]

Y = x^2 +2x
y = 3x +20

so:
x^2 + 2x = 3x + 20

subtract 3x from both side:

x^2 +2x -3x = 20

combine like terms:
x^2 -x = 20

subtract 20 from each side:
x^2 -x -20 = 0

factor the polynomial:

(x-5) (x+4) = 0

solve for x
x = 5 and x = -4 ( 5-5 = 0 and -4 +4 = 0 )

replace x = 5 in 2nd equation: y = 3(5) +20
y = 15 +20
y = 35

replace x with -4 in same equation:
y = 3(-4) +20
y = -12 +20
y = 8
so solution is (5,35) and (-4,8)

6 0

3 years ago

If there are 13 girls in the class and 7 boys what percent of the students are girls???

Mumz [18]

Answer is 13 i hope this helps like it

3 0

3 years ago

A hot air balloon is 2,750 feet above the ground. The angle of depression from the basket of the balloon to the base of the silo

Tanya [424]

Answer:

d = 2750/Cos 48

Step-by-step explanation:

We need the value of the angle from the vertical axis

90 - 42 = 48°

We are trying to find the distance d which is the Hypotenuse of the right angled triangle formed.

The relationship between the adjacent and hypotenuse is help by the cosine of the angle between them

such that

Cos 48 = Adj/Hyp

Cos 48 = 2750/d

d Cos 48 = 2750

d = 2750/Cos 48

6 0

3 years ago

Read 2 more answers

An oil tanker breaks apart and starts leaking. As time goes on, the rate at which the oil is leaking out will diminish. Suppose

Alborosie

Answer:

62.77 million gallons

Step-by-step explanation:

Given,

The function that shows rate of leaking oil per minute in after t hours,

$R(t) = \frac{0.7}{1+t^2}$

∵ 1 hour = 60 minutes ⇒ 3 hours = 180 minutes,

Hence, the quantity of oil leaked out in the first 3 hours,

$V(t) = \int_{0}^{180} R(t) dt$

$=\int_{0}^{180} \frac{0.7}{1+t^2} dt$

$=0.7 \int_{0}^{180} \frac{dt}{1+t^2}$

$=0.7[tan^{-1}(t)]_{0}^{180}$

$=0.7(tan^{-1}(180) - tan^{-1} (0))$

$=0.7(89.68)$

= 62.77 million gallons

5 0

4 years ago

Which equation can be used to solve the following word problem? Seth has 8 more nickels than dimes, and the total value of his c

9966 [12]

Answer:

Seth has 21 nickels

Step-by-step explanation:

Let n represent the number of nickels. Since Seth has 8 more nickels than dimes, then (n-8) is the number dimes.

Nickel is worth 5 cents and dime is worth 10 cents. Thus, n nickels are worth 5n cents and (n-8) dimes are worth 10(n-8) cents. The total value of Seth's coins is $2.35 that is 235 cents, then

$5n+10(n-8)=235.$

Solve this equation:

$5n+10n-80=235,\\ \\15n=235+80,\\ \\15n=315,\\ \\n=21.$

6 0

4 years ago