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Soloha48 [4]
3 years ago
8

1. Add all even numbers between 31 and 37.

Mathematics
1 answer:
harkovskaia [24]3 years ago
4 0
1. 32+34+36=102
2. 250/1×7/10=1750/10= 175
250-175= 75 more gallons
3. 77.7, 77 7/100= 77.07 so 77.7 is larger
4. 1,026,231
5. 16 cubes, 4 each way because 8÷2=4 and 4^2 is 16
6 1/4 cubes for 4cm because area of 4cm cube is 16 and area of 10 cm is 100, and 100÷16=6.25 or 6 1/4
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PLS HELP I’m in a quiz and I’m failing math and need to pass this
Zarrin [17]

Answer:

\sqrt{2x - 5}  + 4 = x \\  \sqrt{2x - 5}  = x - 4 \\ 2x - 5 =  {(x - 4)}^{2}  \\ 2x - 5 =  {x}^{2}  - 8x + 16 \\  {x}^{2}  - 10x + 21 = 0 \\  {x}^{2}  - 3x - 7x + 21 = 0 \\ x(x - 3) - 7(x - 3) = 0 \\ (x - 3)(x - 7) = 0 \\ \boxed{x = 3 \: or \: x = 7}

<h2><u>x=3</u> or <u>x=7</u> is the right answer.</h2>
8 0
3 years ago
Please explain. Thank you!
dmitriy555 [2]

Answer:

The answer to your question is:

first piece        44/3

second piece   35/3

third piece    5/3

Step-by-step explanation:

First we define the variable, it will be "x", and will be for the second piece.

Second piece = x

First piece = x + 3       (from the problem)

Third piece = x - 10     (from the problem)

We sum all

                    x + 3 + x + x -10 = 28

                  3x - 7 = 28           simplify like terms

                   3x = 28 + 7

                   3x = 35

Second piece                      x =  35/3

First piece  = x + 3 = 35/3 +3 = (35 + 9)/3 = 44/3

Third piece = 35/3 - 10 = (35-10)/3 = 5/3                        

6 0
3 years ago
When the expression -3x^5+6x2-9x^3-x Is written in descending order from highest to lowest
Paraphin [41]

Answer: -3x^{5}-9x^{3}+6x^{2}-x

Step-by-step explanation:

We have the following expression:

-3x^{5}+6x^{2}-9x^{3}-x

If we rewrite it in descending order, from the highest exponent to the lowest exponent, we will have:

-3x^{5}-9x^{3}+6x^{2}-x

This is a Fitht degree polinomial, since its highest power is 5.

5 0
4 years ago
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