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Delicious77 [7]
3 years ago
10

**** HELP*****

Mathematics
2 answers:
Mademuasel [1]3 years ago
4 0

Birmingham and Montgomery both have a state sales tax rate of 4 percent and a local tax rate of 6 percent – although the report notes that part of Birmingham lies in Shelby County, meaning the combined rate is only 9 percent in some parts of the city.



coldgirl [10]3 years ago
3 0
If the tax is 10%, divide the total by 10%. Since he paid $9.44, $9.44*10 = $94.40
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Identify the factors of x2 − 4x − 21. (x − 7)(x 3) (x 7)(x − 3) (x 21)(x − 1) (x − 21)(x 1)
Tanzania [10]

The factors of the quadratic expression x² - 4x - 21 is <u>(x - 7)(x + 3)</u>, making the <u>first option</u> the right choice.

A quadratic expression is of the form ax² + bx + c, which can be factorized using the mid-term factorization method, where b is shown as the sum or difference of two such numbers, whose product is equal to the product of a and c.

In the question, we are asked to factorize the quadratic expression, x² - 4x - 21.

In the given expression, a = 1, b = -4, and c = -21.

Thus, ac = -21.

The numbers having a product 21 are:

1*21 = 21,

3*7 = 21.

Since, 3 - 7 = -4 (That is b), we break b into 3 and -7.

Thus, the expression can now be shown as:

x² - 4x - 21

= x² + (3 - 7)x - 21

= x² + 3x - 7x - 21

= x(x + 3) - 7(x + 3) {By taking common}

= (x - 7)(x + 3) {By taking common}.

Thus, the factors of the quadratic expression x² - 4x - 21 is <u>(x - 7)(x + 3)</u>, making the <u>first option</u> the right choice.

Learn more about factorizing a quadratic expression at

brainly.com/question/52959

#SPJ1

5 0
1 year ago
Help me plz!!!!!!!!!!!!!
4vir4ik [10]
22 and 27 is the answer. what else do you need??
8 0
3 years ago
Five years ago, John's age was half of the age he will be in 8 years. How old is he now?
notka56 [123]
J-5=0.5J+8
J=0.5J+13
0.5J=13
J=26
8 0
3 years ago
Read 2 more answers
I need the answer ASAP is it <br> A.119<br> B.180<br> C.81<br> D61<br> Please I need this ASAP!
xxMikexx [17]

Answer:

D

Step-by-step explanation:

you subtract 180 from 119 and you get 61

6 0
3 years ago
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For each pair of polygons, describe the transformation that could be applied to Polygon A to get Polygon B
Rzqust [24]

Please show the polygons.

6 0
3 years ago
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