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3 years ago

Can you help me find the answer quick

Mathematics

2 answers:

stepan [7]3 years ago

6 0

Answer:

Step-by-step explanation:

The answer is 14x + 30y - 20.

Before listing the steps, I am gonna list the vocabularies that might be helpful to understand the question.

Coefficient: A number by which another number or symbol is multiplied.

Ex: 5 is the coefficient of y in the term 5y.

Variable: A quantity that can have any one of a set of values or a symbol that represents such a quantity.

Ex: y is the variable of 5 in the term of 5y

Constant: A value that does not change.

Ex: 20 is the constant in 5y + 20

Step 1: After distributing the 14, we will have 14x + 14y + y - 20 + 15y

Step 2: Now, we are going to combine like terms. If you are getting confused, you can start with x and look for other xs in the equation that might be there to combine. After doing x, you can do y. Look for other ys in the equation to combine. After combining all, we will have 14x + 30y - 20.

I hope this was helpful. Let me know if you need any clarification or further help.

Nimfa-mama [501]3 years ago

3 0

Answer:

14x+30y-20

Step-by-step explanation:

14(x+y)=14x+14y

14y+y=15y+15y=30y

and there is no like terms for -20 and 14x so the answer is

14x+30y-20

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Solve using the Quadratic Formula:

Advocard [28]

A. - 7x² + 7x + 1 + 8 = 0

- 7x² + 7x + 9 = 0

x = - b ± √b² - 4ac / 2a

= - 7 ± √7² - 4 (-7) (9) / 2 (-7)

= - 7 ± √49 + 252 / - 14

= - 7 ± √ 301 / - 14

x = - 7 + 17.349 / - 14 x = - 7 - 17.349 / - 14

= 10.349 / - 14 = - 24.349 / - 14

= - 0.739 = - 1.739

B. 8x² - 5x² + 6x + 1 = 0

3x² + 6x + 1 = 0

x = - b ± √b² - 4ac / 2a

= - (-5) ± √-5² - 4 (3) (1) / 2 (3)

= 5 ± √25 - 12 / 6

= 5 ± √ 13 / 6

x = 5 + 3.606 /6 x = - 5 - 3.606 / 6

= 8.606/6 = - 8.606/6

= 1.434. = - 1.434

please re-check the answers hope this helps

6 0

2 years ago

A segment in the complex plane has a midpoint at 3 – 2i. If one endpoint of the segment is at 7 i, what is the other endpoint? –

Brut [27]

The midpoint of a segment divides the segment into equal halves

The other endpoint is 1- 5i

<h3>How to determine the missing endpoint </h3>

The coordinates are given as:

Point 1: 7 + i

Midpoint: 3 - 2i

Represent the other endpoint with x.

So, we have:

2 * Midpoint = Point 1 + x

This gives

$2 * (3 - 2i) =7 + i + x$

$6 - 4i =7 + i + x$

Collect like terms

$x = 6 -7- 4i -i$

Evaluate the like terms

$x = 1- 5i$

Hence, the other endpoint is 1- 5i

Read more about midpoints ta:

brainly.com/question/9635025

6 0

2 years ago

Marcos invited 33 guests to his party. So far, 8 guests have replied "will attend" and 9 guests have replied "will not attend".

myrzilka [38]

Answer:

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

Chris wants to fence three sides of a rectangular exercise yard for his dog. The fourth side of the exercise yard will be a side

Semmy [17]

Answer:

parallel: 60 ft
perpendicular: 30 ft
area: 1800 ft^2

Step-by-step explanation:

Let x represent the length of fence parallel to the house. Then the length perpendicular is ...

y = (120 -x)/2

The area of the yard is the product of these dimensions, so is ...

A = xy = x(120-x)/2

This is the equation of a parabola that opens downward and has zeros at x=0 and x=120. The maximum (vertex) is on the line of symmetry, halfway between these zeros, at x=60.

The fence parallel to the house is 60 feet.

The fence perpendicular to the house is (120-60)/2 = 30 feet.

The area of the yard is (60 ft)(30 ft) = 1800 ft^2.

4 0

4 years ago

Show the work please

igor_vitrenko [27]

Answer:

10/11

Step-by-step explanation:

At first we have to swap the fractions to make those fractions into a normal number. Because it will become a multiplication.

4 × (x + 5) < 5 × (3x + 2)

We will multiply the numbers by the brackets.

4x + 20 < 15x + 10

Now we swap the constant and values from left to right side.

4x - 15x < 10 - 20

or, - 11x < -10

If we divide the inequality by a negative number, say - 11, the inequality becomes reverse.

Therefore,

[-11x ÷ (-11)] > [(-10) ÷ (-11)]

or, x > (10/11)

8 0

3 years ago