1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Karolina [17]
2 years ago
6

X = 2/3 y = 1/2 z = 4 2/3 Work out the value of z + x * y

Mathematics
2 answers:
kondor19780726 [428]2 years ago
8 0
The answer to ur question is 5
mihalych1998 [28]2 years ago
4 0

Answer:

5

Step-by-step explanation:

Plug the values of x, y, and z into the expression:

4 2/3 + 2/3 x 1/2

Multiplication first:

2/3 x 1/2 = 2/6

Now we have:

4 2/3 + 2/6

4 2/3 can be rewritten as 4 4/6 (common denominator):

4 4/6 + 2/6 = 4 6/6 or 5

You might be interested in
Please help with the questions in the image
Pavel [41]

Answer:   f(x) = (x - 3)²

<u>Step-by-step explanation:</u>

Use the vertex formula: y = a(x - h)² + k

and input the vertex (h, k) = (3, 0) and the given point (x, y) = (4, 2) to solve for a

2 = a(4 - 3)² + 0

2 = a(1)²

2 = a

Now, input (h, k) = (3, 0) and a = 1 into the vertex formula:

y = 1(x - 3)² + 0    →     y = (x - 3)²  

****************************************************************************

Answer:   g(x) = -(x + 1.25)² + 2.5625

<u>Step-by-step explanation:</u>

Use the vertex formula: y = a(x - h)² + k

and input the given points for (x, y) to create a system of equations, then solve for a, h, and k.

EQ1: 2 = a(-2 - h)² + k  

       2 = a(4 + 4h + h²) + k

       2 - 4a - 4ah - ah² = k


EQ2: 1 = a(0 - h)² + k

        1 = ah² + k

        1 - ah² = k


EQ3: -2.5 = a(1 - h)² + k

        -2.5 = a(1 - 2h + h²) + k

        -2.5 -a + 2h + ah² = k

<u>Substitute</u> - set EQ1 = EQ2 and EQ2 = EQ3 to eliminate k

EQ1 = EQ2:     2 - 4a - 4ah - ah² = 1 - ah²

                                 1 - 4a - 4ah = 0    

EQ2 = EQ3:     1 - ah² = -2.5 - a + 2ah - ah²

                                3.5 + a - 2ah = 0  

<u>Elimination:</u>  - now solve the system for "a"

 1 - 4a - 4ah = 0    →    1(1 - 4a - 4ah = 0)    →     1 - 4a - 4ah = 0

3.5 + a - 2ah = 0   →   -2(3.5 + a - 2ah = 0) →  <u> -7 - 2a + 4ah = 0 </u>

                                                                         -6 - 6a           = 0

                                                                              -6a            = 6

<h2>                                                     a     = -1</h2>

Next, replace "a" with -1 into either of the equations to solve for "h"

                                         1 - 4a - 4ah = 0

                                     1 - 4(-1) - 4(-1)h = 0

                                            1 + 4 + 4h = 0

                                                 5 + 4h = 0

                                                       4h = -5

<h2>                                     h = -1.25</h2>

Now, replace "a" with -1 and "h" with -1.25 into any of the original equations (EQ1, EQ2, or EQ3) to solve for k:

1 - ah² = k

1 - (-1)(-1.25)² = k

1 - (-1)(1.5625) = k

1 + 1.5625 = k

<h2> 2.5625 = k</h2>

Now, input (h, k) = (-1.25, 2.5625) and a = -1 into the vertex formula:

y = -1(x - (-1.25))² + 2.5625    →     y = -(x + 1.25)² + 2.5625

4 0
3 years ago
Ridley bought 3 3/4 yards of blue fabric,12 5/6 yards of red fabric,and 7 2/3 yards of purple fabric.if she paid $7.50 per yard,
Amanda [17]

The fabric cost $181.875

Step-by-step explanation:

Blue fabric bought = 3 3/4 yards , change to improper fraction (4*3)+3/4 = 15/4 yards

Red fabric= 12 5/6 yards = 77/6 yards

Purple fabric= 7 2/3 yards= 23/3 yards

Find  total length of fabric bought, 15/4 +77/6 +23/3 =291/12 yards

Cost per yard= $7.50

Total cost will be, 291/12 * 7.50 =$ 181.875

Learn More

Cost : brainly.com/question/12878495

Keywords : cost, yard

#LearnwithBrainly

5 0
3 years ago
Y=-3x+12 Y=-3
Alenkasestr [34]

Well first you substitute -3 for y and then subtract 12 from both sides of the equation and it should look like -15=-3x. Then divide 3 on both sides and you should end up getting 5=x.

4 0
2 years ago
At a currency exchange rate, 3 U.S dollars can be exchanged for 5 Japanese Yin. How many U.S dollars will you receive for 1 Japa
adelina 88 [10]
0.6 yin. Have a goodnight!!
4 0
2 years ago
Given sin B = .88 find angle B in radians. Round your answer to the nearest hundredth.
ELEN [110]

Use the inverse sine function on a calculator.


arcsin (0.88) = 1.08 radians

6 0
3 years ago
Other questions:
  • An inequality is shown below.
    12·1 answer
  • In the following math problem, which operation should you do FIRST? 8 + 3(72 x 4) – 5 ÷ 2
    12·2 answers
  • 2x - 7y = 2 and 3x + y = -20 addition/elimination
    10·1 answer
  • Tri-Cities Bank has a single drive-in teller window. On Friday mornings, customers arrive at the drive-in window randomly, follo
    15·1 answer
  • Someone plz help me
    14·1 answer
  • (x​²​y−3y²+5xy​²​​ )−(−x​²y+3xy​²​​ −3y​² )
    14·1 answer
  • What is 22 minus twelve
    13·2 answers
  • Rosa bought 3 pairs of shoes. Each pair cost $40. She paid $120<br> for all three pair.
    5·1 answer
  • Triple u then divide 3 by the result?
    13·1 answer
  • Calculate the area of the alarm clock.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!