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blagie [28]
3 years ago
14

Write a polynomial of least degree with rational coefficients, a leading coefficient of 1, and zeros at 3 and sqr root 7. Expand

your answer and write it in standard form
Mathematics
1 answer:
Tresset [83]3 years ago
6 0

Answer:

(x-3)(x^2-7) = x^3 -3x^2 -7x + 21

just change the sign of the root and put x in front of it, then multiply the factors all together

(x-3)(x-sqr7)(x+sqr7)    roots come in conjugate pairs to eliminate irrational coefficients

(x-sqr7)(x+sqr7) = x^2-7.  similar to (a-b)(a+b) = a^2-b^2

Step-by-step explanation:

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Quadrilateral QRST is a square. If the measure of angle RQS is 5x – 15. Find the value of x.
rodikova [14]

angle of RQS = 45 degrees so

5X-15 = 45

5x=60

x = 12

6 0
3 years ago
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There is 20 oz. bag for 1.60$ or a 2lb bag for $2.40. which is the lower rate?
Varvara68 [4.7K]
Seriously? the 20oz bag for $1.60 is cheaper per oz.
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3 years ago
A triangle has one angle measuring 3X degrees a second angle measures 2X +20°
Lena [83]
Answer : x = 20

Explanation :
3x + 2x +20 + 4x - 20 = 180

(3+2+4=9)

9x + 20 - 20
The 20s cancel each other out because one is positive and the other is negative

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9x/9 = 180/9

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7 0
3 years ago
Are the two terms on each tile like terms? Sort the tiles into the appropriate categories.
o-na [289]

Answer:

Like terms: -7y^2 and y^2, 0.5kt and -10kt, 6 and 9

Not like terms: -4p and p^2, 5x and 5, 3ad and 2bd

Step-by-step explanation:

Two or more terms are called like terms if they have same variables and powers.

-7y^2 and y^2 are like terms because they have same variable y with same power 2.

-4p and p^2 are not like terms because they have same variable y with different powers.

0.5kt and -10kt are like terms because they have same variables kt with same power 1.

6 and 9 are like terms because both are constant.

5x and 5 are not like terms because one have variable and other is constant.

3ad and 2bd are not like terms because they have different variables.

Like terms: -7y^2 and y^2, 0.5kt and -10kt, 6 and 9

Not like terms: -4p and p^2, 5x and 5, 3ad and 2bd

7 0
3 years ago
Write a conditional statement that is false but has a true inverse fast please
Marina CMI [18]

Answer:

If two angles are not complementary, then their angles add up to 180 degrees.

Step-by-step explanation:

4 0
4 years ago
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