Solve.
x +y + 2z=3
2x – 2y – 3z = 2
3x - y - 2z=1
Enter your answer, in the form (x, y, z). in the boxes

Answer:

3.94 seconds

Step-by-step explanation:

h = - 16t² + 248

If stone is dropped, then h = 0

- 16t² + 248 = 0

t² = [tex]\frac{248}{16}[/tex]

t = ± [tex]\frac{2\sqrt{62} }{4}[/tex]

t < 0 is a solution of equation, but not a solution of the task

t = [tex]\frac{2\sqrt{62} }{4}[/tex] ≈ 3.94 seconds

Answer:

≈ 3.74 seconds

Step-by-step explanation:

Oops! The numbers I had to work with were "The function y = –16t2 + 224..."

Answer:

the first one is correct

Step-by-step explanation:

Answer:

20

Step-by-step explanation:

11+9=20 :)

Answer:

ok so 9+11 is 20. you start with 11 and add 9 to it using your fingers if needed:

11,12,13,14,15,16,17,18,19,20

Step-by-step explanation:

Answer: 2 3/4 a + 1/5 b

Step-by-step explanation:

Add the like terms

The solution of the given expression is equal to 7a/4 + b / 5.

The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.

Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.

Given expression is 2a + (3/4a + 1/5b). The given expression will be solved as below,

E = 2a + (3/4a + 1/5b)

E = 2a + (3/4)a + (1/5)b

E = 7a/4 + b / 5

Therefore, the solution of the given expression is equal to 7a/4 + b / 5.

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Answer:

SEE BELOW

Step-by-step explanation:

By mid point theorem:

1)

[tex] MO = 2\times CD\\\\

MO = 2\times 4\\\\

\huge\red {\boxed {MO = 8\: cm}} \\\\[/tex]

2)

[tex] NO = 2\times CE\\\\

NO = 2\times 8\\\\

\huge\purple {\boxed {NO = 16\: cm}} \\\\[/tex]

3)

[tex] MN= 2\times DE\\\\

MN = 2\times 7\\\\

\huge\purple {\boxed {MN = 14\: cm}} \\\\[/tex]

4)

[tex] 2(3x +1) = 20\\\\

3x + 1= \frac {20}{2}\\\\

3x + 1 = 10\\\\

3x = 10-1\\\\

3x = 9\\\\

x = \frac{9}{3} \\\\

x = 3\: units[/tex]

Answer:

64

Step-by-step explanation:

180-52/2=128/2=64

Answer:

It is 19,953. Your welcome

Answer:

99,765/5= 19953 :)

Step-by-step explanation:

Answer:

10 is more than h

Step-by-step explanation:

sub 14 add  to 6 divid by two switch signs and poof

Answer:

10>h  

Step-by-step explanation:

-6< -2h+14

-6-14<-2h

-20<-2h

 -2 <-2           when you divide by a negative number you must reverse the

10>h                inequality sign

Step-by-step explanation:

the value is -5 hope that is good

Answer: −7.5 thousand dollars

Step-by-step explanation: Khan Academy

Using the expected value formulae, the expected value of Annie entering the tournament is -$7950

Creating a probability distribution table :

Net amount won = (500 - 100) = 400 thousand

Amount lost = 100 thousand

X ___ : - 10,000 ____ 400,000

P(X) _ : __ 0.995 _______ 0.005

Using the expected value formulae:

E(X) = (0.995 × - 10,000) + (0.005 × 400,000)

E(X) = - 9950 + 2000

E(X) = -7950

Hence, the expected value of entering the tournament is -$7950

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Answer:

-17/6

Step-by-step explanation:

You find the slope by using the equation: y2-y1/x2-x1.

-20-(-3)/7-1

-20+3/6

-17/6

Answer:

81, 64, 47, 30, 13, -4

Answer:

The next two numbers are 13 and -4.

Step-by-step explanation:

We are subtracting 17 each time.

30 - 17 = 13

13 - 17 = -4

Answer:

1) y = -f(x) (This is the reflection about the x-axis of the graph y = f(x).) That is for every point (x, y) there is a point (x, -y). Look at the example graphs below of y = x2 and y = -x2. Notice the green graph is simply the same as the blue graph folded down

Answer:

$72 is your answer

Step-by-step explanation:

hope this helps ♡

Answer:

Step-by-step explanation:

58(s-4)=0

58s-232=0

58s=232

S =232/58

S=4

Value of a is 4.

Answer:

4567

Step-by-step explanation:

sdjfgkh

Answer:

1880000

Step-by-step explanation:

1880 * 1000 = 1880000

Answer:

\overline{a} = \frac{v - v_0}{t} = \frac{\Delta v}{\Delta t}

Step-by-step explanation

i do not really understand but use this formula

= average acceleration

v = final velocity

v_0 = starting velocity

t = elapsed time

Answer:

its D

Step-by-step explanation:

5x+8y>120 and x+y<20 are the two inequalities shows the set of solutions for Leah earning at least $120 and working no more than 20 hours

a relationship between two expressions or values that are not equal to each other is called 'inequality.

Let x=babysitting hours paid at $5

y=ice cream shop hours paid at $8.

Total earned >120

total hours<20

So here is what our equations will look like:

5x+8y>120

x+y<20

Convert the first equation into y>mx+b format

8y>-5x+120

y>-5/8x+15

Convert the second equation into y>mx+b

x+y<20

y<-x+20

We can also solve this mathmatically by finding the point where our equations are equal:

-5/8x+15=-x+20

Add x to both sides to get:

3/8x+15=20

subtract 15 from both sides:

3/8x=5

divide both sides by 3/8:

x=13.33

The question asks us to round to the nearest whole hour, so the minimum she can babysit is 14 hours to still make $120 a week.

Hence, 5x+8y>120 and x+y<20 are the two inequalities shows the set of solutions for Leah earning at least $120 and working no more than 20 hours

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Y•55=x

Step-by-step explanation:

9514 1404 393

Answer:

  45 meters

Step-by-step explanation:

The equation is given in vertex form:

  h(t) = a(t -b)^2 +c

where (b, c) is the vertex (maximum).

The values of the parameters are ...

  a = -5, b = 3, c = 45

Then the maximum height is (time, height) = (3, 45).

The maximum height of the ball is 45 meters.

Answer:

59 years and younger

Step-by-step explanation:

Answer:

what do you want from this question?

Step-by-step explanation:

Answer:

3/5

Step-by-step explanation:

1. 40,60,80

2.48,35,23.7

Answer:

x = 18

These two angles are formed by a transversal that cuts through 2 parallel lines. This means that (5x + 2) on line m corresponds to the angle on the right of (5x-2) on line n.

Now that we can see (5x + 2) and (5x - 2) are on a straight line, we can say that (5x + 2) + (5x - 2) = 180

10x + 0 = 180

10x = 180

x = 180/10

x = 18

Answer:

8

Step-by-step explanation:

follow the graph

Answer:

D. 8

Step-by-step explanation:

Look for 4 the x axis and go up until you see the dot. Whatever is on the y-axis is your answer(8)

Answer:

Step-by-step explanation:

Total for the first choice:

Total for the second choice:

As we see the second choice is better as more salary is expected