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LekaFEV [45]
2 years ago
14

Write an algebraic expression for the following: A number that is 5 more than half of x

Mathematics
1 answer:
Harrizon [31]2 years ago
3 0

Answer:

2. 0.5x + 5

Step-by-step explanation:

5 + 0.5x

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3x+4y-3z=4;5x-y+2z=3;x+2y-z=-2 Solving Systems in three variables​
Harlamova29_29 [7]

Answer:  x = 3, y = 1, z = 2

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

EQ 1:   x  -   y  - z = 0

EQ 3:<u> -x + 2y + z =  1 </u>

                  y       = 1

EQ 2: 2x - 3y + 2z = 7  →  1(2x - 3y + 2z = 7)  →  2x - 3y + 2z = 7

EQ 3:  -x + 2y +  z = 1   → -2( -x + 2y +  z = 1)  → <u>-2x + 4y + 2z = 2</u>

                                                                                      y + 4z = 9

                                                                    y = 1  ⇒     1  + 4z = 9

                                                                                            4z = 8

                                                                                              z = 2

Input y = 1 and z = 2 into one of the equations to solve for x:

EQ 1: x - y - z = 0

        x - (1) - (2) = 0

        x - 3 = 0

        x = 3

Check:

EQ 2: 2x - 3y + 2z = 7

         2(3) - 3(1) + 2(2) = 7

          6    -  3    +  4    = 7

                3        +  4    = 7

                               7   =  7   \checkmark

6 0
3 years ago
If a number is odd, then it has a remainder of 1 when divided by 2.
Dominik [7]

Answer:

A number is odd

Step-by-step explanation:

8 0
3 years ago
4 of the 9 tiles in the floor pattern are white. What percent of the tiles are white?
choli [55]

Answer:

44.5%

Step-by-step explanation:

THis is because 4/9x100=44.5, which means that 44.5% of the tiles are white

7 0
2 years ago
How to do it? i dont really under stand
dybincka [34]

First, we want to ask "What number divided by 7 <em>is </em>800?" That'll give us a jumping off point to answer the rest of the question.

If dividing some number by 7 gets us 800, that means that <em>multiplying </em>800 by 7 should get us back that number. We find that 800 x 7 = 5600. The first number higher than 5600 is 5601, which, when divided by 7, gets us about 800.14, a number greater than 800. So the lowest whole number that makes the inequality ? ÷ 7 > 800 work is 5601.

7 0
3 years ago
Two stores sell a certain product. Store A has 45% of the sales, 3% of which are of defective items, and store B has 55% of the
Mumz [18]

Answer:

Probability = 0.0355

Step-by-step explanation:

Given

Stot A:

Sales = 45\%

Defective = 3%

Store B

Sales = 55\%

Defective = 4%

Required

Determine the probability a product received is defective.

First, we calculate the probability that the defective product is from store A

Probability = P(Sales) * P(Defective)

P_A = 45\% * 3\%

Convert to decimals

P_A= 0.45 * 0.03

P_A= 0.0135  

Next, we calculate the probability that the defective product is from store B

P_B= 55\% * 4\%

P_B= 0.55 * 0.04

P_B= 0.022

The product may come from either stores.

So, the probability of having a defective product is:

Probability = P_A + P_B

Probability = 0.0135 + 0.022

Probability = 0.0355

4 0
3 years ago
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