Find the value of y that satisfies the equation, 8.8y - 4 = 7.7y + 7.a) 1.1, b) 7.7, c) 8.0, d) 10.0, e) 11.0

Is the 11 right answer ???? I don't understand this..

Answers

Answer 1

Answer: $8.8y-4=7.7y+7 \n 8.8y-7.7y=7+4 \n 1.1y=11 \n y=11/1.1 \n y=10-> answer D$

Answer 2

Answer: $8.8y - 4 = 7.7y + 7\n 1.1y=11\n y=10$

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E79: Substitute values into more general algebraic expressions.v= u + at u = 1 a = 3 t = 1/2 Work out the value of v.

∠E and ∠F are vertical angles with m∠E=8x+8 and m∠F=2x+38.

What is the value of x?

Answers

As they are vertical angles, their magnitude will be equal.
8x+8 = 2x+38
8x-2x = 38-8
6x = 30
x = 5

So, Your Final Answer would be 5

Hope this helps!

Your Final Answer would be 5

Hope this helps!

The larger of two numbers is 1 more than twice the smaller. The sum of the numbers is 20 less than three times the larger. Find the numbers.

I NEED help please. I'm getting extremely frustrated!!

Answers

Let x be the larger number; Let y be the smaller number.
EQUATIONS:
x-2y=1
x+y+20=3x
---------
Rewrite as
x-2y=1
2x-y=20
==========

Multiply the 1st equation by 2 to get:
2x-4y=2
Subtract this result from the 1st equation to get:
3y=18
y=6
Substitute that into the 1st equation to get:
x-2*6=1
x=13
-------
Solution: x=13; y=6

Answer:

13 and 6

Step-by-step explanation:

Let x = larger number

Let y = smaller number

The larger of two numbers is: x =

one more than twice the smaller: 2y + 1

x = 2y + 1 {equation 1}

The sum of the numbers is: x + y =

20 less than three times the larger: 3x - 20

x + y = 3x - 20

This can be simplified. Subtract 3x from both sides.

x - 3x + y = -20

-2x + y = -20 {equation 2}

Since we already know from equation 1 that x=2y+1, substitute that into equation 2

and solve for y:

-2(2y+1) + y = -20

-4y - 2 + y = -20

-3y - 2 = -20

-3y = -18

y = -18/(-3)

y = 6

x = 2y+1 = 2(6)+1 = 12 + 1 = 13

Your numbers are 13 and 6

How do I factor
4x^3 - 6x^2 - 28x
show work please

Answers

4x^3 - 6x^2 - 28x

2x (x + 2) (2x - 7)

A shipment of marbles with a mean diameter of 27 mm and a standard deviation of 0.15 mm is normally distributed. By how many standard deviations does a marble with a diameter of 26.85 mm differ from the mean?

Answers

This could be solved by calculating the z-score. Itsdefinition is the number of standard deviations from the mean a data point is.The formula is,

Z =║Data point – Mean║ / Std. dev.

Z = ║26.85 mm – 27 mm║ / 0.15

Z = 1

Answer:

The answer would be 1

Step-by-step explanation:

Which quadrilateral has four right angles and four sides of equal length?

Answers

Answer:

Square.

Step-by-step explanation:

A square is a rectangle, but a rectangle is not a square.

Answer:

A square

Step-by-step explanation:

The file below can help you out understand the properties of the square better!

Caroline delivers flowers and earns $1.25 for each rose and $0.75 for each daisy. What is her total pay for a week in which she sold 288 roses and 432 daisies?