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2 years ago

Simplify 2x2 - y for x = 3 and y = -2. 10 16 20 14

Mathematics

2 answers:

RoseWind [281]2 years ago

6 0

Answer:

Step-by-step explanation:

Given

2x² - y ← substitute x = 3 and y = - 2 into the expression

= 2(3)² - (- 2)

= 2(9) + 2

= 18 + 2

= 20

goldfiish [28.3K]2 years ago

6 0

Answer: I hope one of the answers help because the equation inst put correctly so it can be either 14 or 10 check below for the equation order.

Step-by-step explanation:

First, you substitute the input variables for x and y.

$2^3(2)-2 =\\8(2)-2=\\16-2=14\\\\2(3)(2)-2=\\6(2)-2=\\12-2=10$

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A line has a slope of zero Which of the following points could this line pass through

Rina8888 [55]

Answer:

Step-by-step explanation:

m(slope) = y2 - y1 / x2 - x1

-6 - - 6 / 7 - 3

= 0 / 4 = 0

3 0

2 years ago

Heeeeeeelp pleeeease

Umnica [9.8K]

Answer:

<em>Solve for b. by simplifying both sides of the inequality, then isolating the variable.</em>

Inequality Form:

$b < -\frac{3}{7}$

Interval Notation:

( − ∞ , $-\frac{3}{7}$ )

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8 0

2 years ago

Any suggestions or answers

Sati [7]

Answer:

$x=81\degree$

$y=99\degree$

$z=129\degree$

Step-by-step explanation:

The sum of the interior angles of a triangle is 180 degrees.

$\implies 51\degree+48\degree+x=180\degree$

$\implies 99\degree+x=180\degree$

$\implies x=180\degree-99\degree$

$\implies x=81\degree$

Use the exterior angles theorem to find y.

The exterior angle y is the sum of the two remote interior angles:

$y=51\degree+48\degree=99\degree$

The sum of angles on a straight line is 180 degrees.

$\implies z+51\degree=180\degree$

$\implies z=180\degree-51\degree$

$\implies z=129\degree$

7 0

3 years ago

A recipe uses 5 cups of milk to make 25 servings. If the same amount of milk is used

Papessa [141]

Answer:

https://youtu.be/ssE-HVO4SY4

5 0

2 years ago

Nina wants to buy a bicycle thats costs $150. she has saved 6 percent of the total cost of the bicycle.how much money has nina s

notka56 [123]

The understanding one needs to work with percentages is:
1/100 = 1% = 0.01
Also
6/100 = 6% = 0.06
also
25/100=1/4=0.25=25%

To find a spesific share of a total, we can multiply the perectage with the total, like this: Total * 6% or in a way easier to work with: Total * 0.06 or (Total * 6)/100

If you have a calculator i would recommend using the decimals, as they are one of the easiest to type in - and remember once you get the hang of it.

To find the money Nina has saved, you do the following.
150*0.06=9$
Nina has saved 9 dollars.

The remaining percent she needs, is
100-6=94%

She still needs money for 94% of the bike.

8 0

2 years ago