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3 years ago

How do I get the exact value of y

Mathematics

1 answer:

VladimirAG [237]3 years ago

5 0

Y = - pie/4
y = -0.785
I'm not sure if I'm right so u might wanna make sure

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I need help on. this question. (3x^6)^3 the answer must have one exponent

kotykmax [81]

Answer:

$27x^{18}$

Step-by-step explanation:

$\left(3x^6\right)^3$

Separate $3x^6$ :

$3^3\times\left(x^6\right)^3$

$27\times\left(x^6\right)^3$

$27x^{6\times3}$

$27x^{18}$

5 0

3 years ago

Use the substitution method to determine the solution of the system of equations. y = -5x and 21x - 7y = 28

8_murik_8 [283]

Answer:

x = 1/2 y = -5/2

Step-by-step explanation:

Since we already know an equation for y, we just need to plug it into the other equation.

21x - 7(-5x) = 28

21x + 35x = 28

56x = 28

x = 1/2

Now that we know x, we substitute it into the other equation, to find y.

y = -5x

y = -5(1/2)

= -5/2

3 0

2 years ago

Solve for v: 5(5v + 4) = 17v + 8v+ 9 + 9 Omg Pleasssee Help Me

Natali5045456 [20]

Answer:

5(5v+4)=17v+8v+9+9

25v+20=25v+18

25v-25v=18-20

0v=-2

i think soooo

this question is very very irrelevant

Step-by-step explanation:

8 0

2 years ago

At a farmers' market. Karen and Alice each bought some bread that cost $2 per loaf. Then Karen spent $3 to purchase other items,

Lena [83]

Answer:

(1)

Karen: $y = 2x +3$

Alice: $y = 2x +1$

(2): Slope is 2

(3) y intercept

$b = 3$ --- For Karen

$b = 1$ --- For Alice

(4) They do not intersect

(5) No solution

(6) No

Step-by-step explanation:

Given

$x = loaves$

$y = amount$

Solving (1): Complete the equation.

For Karen:

$m = 2$ --- the rate

$b = 3$ --- additional spendings

For Alice:

$m = 2$ --- the rate

$b = 1$ --- additional spendings

The general equation is;

$y = mx +b$

For Karen, it becomes

$y = 2x +3$

For Alice, it is:

$y = 2x +1$

(2): The slopes.

In (1), we have:

$m = 2$ --- the rate (for both Karen and Alice).

This rate implies the slope.

Hence, the slope is 2

(3): The y intercept.

The additional spendings in (1) means the y intercept.

So, we have:

$b = 3$ --- For Karen

$b = 1$ --- For Alice

(4) Because they have the same slope, they do not intersect

(5) Number of solutions.

$y = 2x +3$

$y = 2x +1$

Subtract both equations

$y-y = 2x-2x +3-1$

$0 = 2$

This means there is no solution

(6) Can they spend the same amount on the same number of loaves

In (5), the equations have no solution

Hence, it is not possible to spend the same amount for the same number of loaves

5 0

3 years ago

Need help all mult choice show some type of work/proof

Brrunno [24]

AD is the diagonal of a 6 by 15 rectangle,

31.

$AD^2 = 6^2+15^2=36+225=261 = 9(29)$

$AD=3 \sqrt{29}$

Choice A

32.

$d^2 = 2^2+3^2=4+9=13$

$d=\sqrt{13}$

Choice A

33.

7 - 4x = 7y

4x + 7y = -7

The parallel through (2,0) keeps the coefficients on x and y and just changes the constant:

4x + 7y = 4(2)+7(0)= 8

7y = -4x + 8

y = (-4/7) x + 8/7

Choice B

6 0

3 years ago