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3 years ago

I nee d help with this because my teacher didn't explain it well.

1 answer:

5 0

To solve 10x-35+3ax=5ax-7a, we'll need to assume that a is a constant and that we are to solve for the variable x. To accomplish this, group all the x terms together on one side and all of the no-x terms on the other:

10x + 3ax - 5ax = -7a + 35

Factoring x out of the left side, we get:

x(10 - 2a) = 7(5 - a). Dividing both sides by (10 - 2a), we get:

7(5 - a)

x = ------------ = 7/2

2(5 - a)

x has the value 7/2.

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1. What are the zeros of the function?

Juliette [100K]

C.

You can factor that equation to the following:

x(x - 3)(x + 2)

Then set each part equal to zero and solve individually.

4 0

3 years ago

Read 2 more answers

Four glasses of milk and 2 snack bars have a total of 72 carbohydrates (carbs), and 2 glasses of milk and 3 snack bars have a t

Travka [436]

One glass of milk has 11 carbs and one snack bar has 14 carbs.

Step-by-step explanation:

Let,

Glass of milk = x

Snack bar = y

According to given statement;

4x+2y=72 Eqn 1

2x+3y=64 Eqn 2

Multiplying Eqn 2 by 2

$2(2x+3y=64)\\4x+6y=128\ \ \ Eqn\ 3$

Subtracting Eqn 1 from Eqn 3

$(4x+6y)-(4x+2y)=128-72\\4x+6y-4x-2y=56\\4y=56$

Dividing both sides by 4

$\frac{4y}{4}=\frac{56}{4}\\y=14$

Putting y=14 in Eqn 1

$4x+2(14)=72\\4x+28=72\\4x=72-28\\4x=44$

Dividing both sides by 4

$\frac{4x}{4}=\frac{44}{4}\\x=11$

One glass of milk has 11 carbs and one snack bar has 14 carbs.

Keywords: linear equations, subtraction

Learn more about linear equations at:

#LearnwithBrainly

6 0

2 years ago

Tom is 13 years old. Brad is 10 yrs old. which number sentence can be used to find how much older Tom is than Brad

zysi [14]

Answer:

is there a multipe choice?

5 0

2 years ago

Read 2 more answers

name the irrational numbers from the list below a. -6 b. 0 c. 55 d. 6.06 e. sqrt 15 f. sqrt 17 g. 1 1/8 h. -17/18 i. 1.353553555

ExtremeBDS [4]

Hello :
the irrational numbers from the list below are : sqrt 15 and <span>1.3535535553...
and </span><span> sqrt 17</span>

5 0

2 years ago

Read 2 more answers

A swing hangs from a beam 10 feet high, with the seat hanging 3 feet above the ground. In motion, the swing moves back and forth

Elza [17]

Answer:

9.9 feet.

Step-by-step explanation:

Solution:

- If the swing were to hang straight down, it would be hanging at an angle of -90 degrees from the horizontal. If it is moving from -45 degrees from the horizontal to -135 degrees from the horizontal, this means that it is swinging from 45 degrees to the right of the straight-down position to 45 degrees to the left of the straight-down position.

- The swing is of length L = 10 - 3 = 7 feet. Recall that it hangs from a beam 10 feet above the ground and the seat hangs 3 feet above the ground in its straight-down rest position.

- Let's consider the swing at one of its extreme positions where it makes an angle of 45 degrees from the vertical. In this position, you can imagine the swing forming a right triangle with the highest vertex angle being 45 degrees and the hypotenuse being L = 7 feet. To calculate the horizontal leg of this triangle, you would use the sine function.

sin(45 deg) = x/L

So,

x = L*sin(45 deg)

x = 7*sin(40 deg) = 4.95 feet

- But, this is only the horizontal distance that the swing traverses from one extreme position to hanging straight down. It needs to complete its motion and swing up to the other extreme position. So, in moving from one extreme position to the other, the swing traverses a horizontal distance of

2x = 2*4.95 feet = 9.9 feet.

6 0

2 years ago