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ra1l [238]
2 years ago
13

Rewrite the polynomial 2x2 + x + +-7x + 1 in standard form.​

Mathematics
1 answer:
sveticcg [70]2 years ago
3 0

Answer:

x-7x+5

Step-by-step explanation:

4+x-7x+1

x-7x+5

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Which could be the other dimension of the second photograph?
Lady_Fox [76]

Answer:

15 inches

Step-by-step explanation:

Since the rectangles are similar then the ratios of corresponding sides are equal.

let x be the other dimension in the second photograph, then

\frac{4}{10} = \frac{6}{x} ( cross- multiply )

4x = 60 ( divide both sides by 4 )

x = 15

Thus the other dimension in the second photograph is 15 inches.

6 0
2 years ago
Help with this question? I got half of it, but can't seem to get the other half. Please explain how you got your answer. Thanks!
AlladinOne [14]
<u>X - Intercept</u>
    x + 3y + 2z = 6
x + 3(0) + 2(0) = 6
        x + 0 + 0 = 6
              x + 0 = 6
              <u>   - 0  - 0</u>
                    x = 6
X - Intercept: (6, 0, 0)

<u>Y - Intercept</u>
  x + 3y + 2z = 6
0 + 3y + 2(0) = 6
    0 + 3y + 0 = 6
    0 + 0 + 3y = 6
          0 + 3y = 6
        <u>- 0         - 0</u>
                <u>3y</u> = <u>6</u>
                 3     3
                  y = 2
Y - Intercept: (0, 2, 0)

<u>Z - Intercept</u>
x + 3y + 2z = 6
0 + 3(0)  2z = 6
  0 + 0 + 2z = 6
        0 + 2z = 6
      <u>- 0         - 0</u>
              <u>2z</u> = <u>6</u>
               2     2
                z = 3
Z - Intercept: (0, 0, 3)

<u>Volume of the X - Intercept, Y - Intercept, and Z - Intercept</u>
V = ¹/₃(¹/₂lwh)
V = ¹/₃(¹/₂(6)(2)(3))
V = ¹/₃(¹/₂(12)(3))
V = ¹/₃(¹/₂(36))
V = ¹/₃(18)
V = 6 u³
7 0
3 years ago
Read 2 more answers
Anna can do a job in 4 days. After she has worked for 1 day, she is joined by Sylvia, and it takes them 2 days working together
Charra [1.4K]

Answer: 8 days.

Step-by-step explanation:

Given that Anna can do a job in 4 days. After she has worked for 1 day, she is joined by Sylvia, and it takes them 2 days working together to finish the job.

Since Anna has already worked for 1 day, she would have worked the remaining days for 3 days. But she is joined by Sylvia, and it takes them 2 days working together to finish the job.

That is,

1/3 + 1/S = 1/2

Where S is the number of days Sylvia to do the job being completed in 2 days.

1/S = 1/2 - 1/3

1/S = (3 - 2)/6

1/S = 1/6

S = 6

The job Anna would have done for 3 days, will take 6 days for Sylvia.

The 1 days used by Anna will be 2 days for Sylvia.

Therefore, the total days that will take Sylvia to do the whole job by herself will be 2 + 6 = 8 days

8 0
2 years ago
A wall takes 10 seconds to strike 6.how much time will it take to strike 12?
andriy [413]
I think it is 20 seconds because when you multiply six times x, you get twelve. And in this case, the x equals two. So, because you multiplied two to six, you do the same thing to the ten seconds, which is twenty. Sorry if this is the wrong answer.
3 0
3 years ago
I need this please help
rjkz [21]

Answer:

  • a) sine
  • b) 9.8 ft

Step-by-step explanation:

The mnemonic SOH CAH TOA helps you remember the definitions of the trig functions. In particular, the function that involves the Opposite side and the Hypotenuse is the Sine function:

... Sin = Opposite/Hypotenuse

In this problem that means ...

... sin(55°) = x/(12 ft)

Multiplying by 12 ft, we have ...

... (12 ft)·sin(55°) = x ≈ 9.82982 ft ≈ 9.8 ft

7 0
3 years ago
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