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2 years ago

13

What is my mystery number???

2 answers:

sammy [17]2 years ago

7 0

Answer: 25

Step-by-step explanation:

To figure out the mystery number, the biggest clue we have is the fact that the number is a double digit and the 2 integers add up to 7. We can list out the possible ways to get a sum of 7. Then we can see which is the mystery number.

0+7

1+6

2+5

3+4

With these pairs, we can automatically eliminate 0+7 because 70 is greater than 30. We can also eliminate 3+4 because 34 is even, not odd. When you flip it to 4+3, it is odd, but it is greater than 30. We can also eliminate 1+6 because 16 is even and 61 is greater than 30. Our answer is 25. 2+5=7 and 25 is odd that is less than 30.

mars1129 [50]2 years ago

5 0

Answer:

25

Step-by-step explanation:

25 has 2 digits

25 is less than 30

25 is odd

2+5 = 7

It is 25.

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Hatshy [7]

Answer:

a

Step-by-step explanation:

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5 0

2 years ago

What are the possible rational roots of the polynomial equation?<br><br> 0=2x7+3x5−9x2+6

RoseWind [281]

Answer: $\pm\frac{1}{1}, \pm\frac{1}{2},\pm\frac{2}{1},\pm\frac{3}{1}, \pm\frac{3}{2}$

Step-by-step explanation:

We can use the Rational Root Test.

Given a polynomial in the form:

$a_nx^n +a_{n- 1}x^{n - 1} + … + a_1x^1 + a_0 = 0$

Where:

- The coefficients are integers.

- $a_n$ is the leading coeffcient ( $a_n\neq 0$ )

- $a_0$ is the constant term $a_0\neq 0$

Every rational root of the polynomial is in the form:

$\frac{p}{q}=\frac{\pm(factors\ of\ a_0)}{\pm(factors\ of\ a_n)}$

For the case of the given polynomial:

$2x^7+3x^5-9x^2+6=0$

We can observe that:

- Its constant term is 6, with factors 1, 2 and 3.

- Its leading coefficient is 2, with factors 1 and 2.

Then, by Rational Roots Test we get the possible rational roots of this polynomial:

$\frac{p}{q}=\frac{\pm(1,2,3,6)}{\pm(1,2)}=\pm\frac{1}{1}, \pm\frac{1}{2},\pm\frac{2}{1},\pm\frac{3}{1}, \pm\frac{3}{2}$

5 0

2 years ago

Pls help me find the area of compound shapes?!?!

Alex73 [517]

3x7 + 2x3 = 22 + 6 = 28 is the area

6 0

2 years ago

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Which is equal to 4 and 1 over 2 divided by 2 and 2 over 3 ?

KonstantinChe [14]

Answer:

decimal: 1.6875

Fraction: 1 11/16

Step-by-step explanation:

8 0

3 years ago

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Number 17 how do i solve?

den301095 [7]

I believe it is x=10

3 0

3 years ago