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3 years ago

Find the product of (-2 x5y3 )( 3x2y )

Mathematics

1 answer:

Y_Kistochka [10]3 years ago

7 0

Answer:

(-2 x5y3 )( 3x2y )= -180 x2 y2

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Hello, I'm trying to solve 6x + y = 4, x - 4y = 19. I have found the y but I cant seem to find the x. Plz help and we cant use d

gizmo_the_mogwai [7]

Answer:

$x=\frac{7}{5}$

$y=-\frac{22}{5}$

Step-by-step explanation:

Given:

The given expressions are.

$6x+y=4$

$x-4y=19$

We need to find x and y values.

Solution:

Equation 1⇒ $6x+y=4$

Equation 2⇒ $x-4y=19$

First solve the equation 1 for y.

$6x+y=4$

$y = 4-6x$ --------(3)

Substitute $y = 4-6x$ in equation 2.

$x-4(4-6x)=19$

Simplify.

$x-(4\times 4 - 4\times 6x)=19$

$x-(16-24x)=19$

$x-16+24x=19$

Add 16 both side of the equation.

$25x-16+16=19+16$

$25x=35$

$x=\frac{35}{25}$

Divide Numerator and denominator by 5.

$x=\frac{7}{5}$

Substitute x value in equation 3 and simplify.

$y=4-6(\frac{7}{5})$

$y=4-\frac{6\times 7}{5}$

$y=4-\frac{42}{5}$

$y=\frac{5\times 4-42}{5}$

$y=\frac{20-42}{5}$

$y=-\frac{22}{5}$ .

Therefore, the value of $x=\frac{7}{5}$ and $y=-\frac{22}{5}$ .

6 0

3 years ago

An agriculture researcher wants to test the effect of nine soil additives by adding four at a time to different rows of the

Dafna11 [192]

Answer:

126

Step-by-step explanation:

Hope it helped :)

3 0

3 years ago

Find the volume of each figure to the nearest tenth. Use 3.14 for<br> No viruses please

ludmilkaskok [199]

Answer:

1) 188.4 in³

2)306 in³

3)210in³

Step-by-step explanation:

1) r = 5in h = 12in

5 * 12 * 3.14

2) L = 3 W = 8.5 H = 12

3 * 8.5 * 12

3) $\frac{1}{2}$ ( B = 5 W = 7 H = 12)

.5(5 * 7 * 12)

6 0

2 years ago

Find the sum of 5x^3-3x^2+5 and -2x^3+6x^2-5

Rasek [7]

$(5x^3-3x^2+5)+(-2x^3+6x^2-5)\\\\=(5x^3-2x^3)+(-3x^2+6x^2)+(5-5)\\\\=\boxed{3x^3+3x^2}$

5 0

3 years ago

Find the simple interest earned on $2600 invested for 3 years at 12% per annum

Aleks04 [339]

Answer:

$936

Step-by-step explanation:

Simple interest is money you can earn by initially investing some money (a.k.a the principal). In return, a percentage (a.k.a the interest) of the initial money invested is added to the principal, this is what makes your initial investment grow.

The equation for simple interest is:

I = P x r x t

P = Principal, $2600

r = interest rate, 12%

t = time involved, 3 years

Fill in the values:

2600 × 0.12 × 3 = $936.00

5 0

3 years ago

Read 2 more answers