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2 years ago

HELP 100 POINTS PLEASE GET IT RIGHT

Mathematics

2 answers:

Nat2105 [25]2 years ago

5 0

Answer:

Step-by-step explanation:

1) ( $2x^{2}$ - 9x + 4) + ( $3x^{2}$ + 2x - 3)

= $2x^{2}$ - 9x + 4 + $3x^{2}$ + 2x - 3

= $5x^{2}$ - 7x - 1

2) $x^{2}$ - 4x - 3 + $x^{2}$ -2x - 3

= $2x^{2}$ - 6x - 6

astra-53 [7]2 years ago

4 0

Answer:

1.) $5x^{2} -7x+1$

2.) $2(x^{2} -3x-3$

Step-by-step explanation:

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Is the expression x3•x3•x3 equivalent to x3•3•3? Why or why not? Explain your reasoning.

devlian [24]

no they are different

if Base are equal power are added

like wise in first expressions power are added

but in second expressions cube of three is written as x to the power.

so they are not equal

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3 years ago

Which statement is true?

serious [3.7K]

Answer:

Step-by-step explanation:

all squares have 4 sides which is a quadrilateral.

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3 years ago

The line y = hx - 2 where h > 0 meets the curve 3y² = 9x² - 6x + 1.

I am Lyosha [343]

Answer:

h=6

Step-by-step explanation:

since $y =hx -2$ is an equation for a line which intersects with the curve $3y^2 = 9x^2 - 6x +1$ . The point of intersection, let's say $(x_1,y_1)$ , should satisfy the two equations. As a result, the value of y in the second equation can be replaced with the value of y in the first equation as the following,

$3y^2 = 3(hx-2)^2 = 9x^2 - 6x +1\\3(h^2x^2 -4hx + 4) = 9x^2 - 6x + 1\\3h^2 x^2 -12hx +12 = 9x^2 - 6x +1$

therefore, the latter equation can be rewritten in a quadratic equation form as the following,

$(9 - 3h^2) x^2 + (12h-6)x + (1-12) = (9 - 3h^2) x^2 + (12h-6)x -11$ = 0

if the line is tangent to the curve, it means that the line touches the curve at one point, therefore the discernment of the second order equation will be equal to zero for the famous quadratic equation solution.

$b^2 -4ac =0$

where $a=9-3h^2, b=12h-6$ and $c=-11$ , as a result, the following equations can be deduced,

$(12h-6)^2 - 4*(9-3h^2)*(-11) = (144h^2 -144h +36) - (36 -12h^2)*(-11)=\\(144-(-12)*(-11)h^2 ) -144h +36 -(36*(-11)) =\\12 h^2 -144h +432 =0$

therefore, dividing both sides by 12

$h^2 -12 +36 =0\\(h-6)^2 =0\\h=6$

8 0

2 years ago

The following group of values was entered into the TVM solver on a graphing calculator

Kisachek [45]

Based on the entries into the TVM solver, the expression that will return the same value for PV is $\frac{(620) (( 1 + 0.066)^{108} - 1) }{(0.066) (1 + (0.066))^{108}}$ .

<h3>Which formula will give the same Present Value?</h3>

The formula for present value for this series of cashflows is:

= $\frac{(Payment) (( 1 + Interest rate)^{Number of years} - 1) }{(Periodic interest) (1 + (Periodic interest))^{Number of years}}$

Based on the P/Y and the C/Y being 12, the number of periods given in the graphing calculator will be the same in the formula, which is 108 periods.

The interest rate of 6.6% will also be the same in the formula.

The best option is therefore <u>option B </u>which has all these figures and so will give the same present value.

Find out more on present value at brainly.com/question/25792915.

#SPJ1

8 0

2 years ago

Read 2 more answers

Math please helpppp.

AleksAgata [21]

Answer:

I'm just trying to get point, Idk know the answer sorry :( i need points that's why I'm replying

7 0

3 years ago