All categories

3 years ago

Plz answer me will mark as brainliest

Mathematics

1 answer:

Gemiola [76]3 years ago

4 0

If x = 5, y = -3. evalue 3x-2y

Thus, substitute x = 5 and y = -3

3(5)-2(-3) = 15-(-6) = 15+6 = 21 #

Simplify 6x-20y+7z-8x+25y-11z

Subtraction and Addition, just subtract and addition of polynomial. Same variable subtract/addition with same variable.

Thus, (6x-8x)+(-20y+25y)+(7z-11z) = -2x+5y-4z #

You might be interested in

This year, gasoline costs $4 per gallon. This is a 125% increase over the cost 3 years ago. What expression can be used to deter

pochemuha

The equation would be, 4/125%.

7 0

4 years ago

Juan paid 59.99 tor a jacket that originially sold for 85.50. about what percent of the originial price did he pay for the jacke

77julia77 [94]

Juan paid 70.16 % of the original price of the jacket.

Step-by-step explanation:

Step 1:

Given details, Original Selling Price of the jacket = 85.50

New Selling Price of the jacket = 59.99

Step 2:

To determine what percentage of the old price is the new price, we have to use percentage calculation.

$x/100\times 85.50 = 59.99$

Step 3:

Substitute in the formula, the given values

x = $(59.99/85.50) \times 100$

= $(0.7016) \times 100$

= $70.16$

Therefore, percentage paid is 70.16%

8 0

3 years ago

A walkway forms one diagonal of a square playground. The walkway is 22 m long. How long is a side of the playground?

nadya68 [22]

You can think of a square as two isosceles right angle triangles and use Pythagoras.

x^2 + x^2 = 22^2
x^2 + x^2 = 484
2x^2 = 484
x^2 = 242
x = 11√2

One side of the playground is 11√2 m long.

5 0

4 years ago

How do you expand (x+3)^4

Alisiya [41]

(X+3)(x+3)(x+3)(x+3) you just write that same equation which in this case (x+3) the number of times it's to the power to, in this case 4. So write (x+3) 4 times.

6 0

3 years ago

What is 60 over negative 15??

Annette [7]

-4 since -4*-15=60
also gcd (60,15)=15
so 60/15=4/1

8 0

3 years ago

Plz answer me will mark as brainliest ​

Plz answer me will mark as brainliest