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Schach [20]
3 years ago
15

I will name you Brainliest. Plz Help Asap 14 points

Mathematics
2 answers:
snow_tiger [21]3 years ago
7 0

Answer: 5

Step-by-step explanation:

2w + 2L = perimeter

2w + 2(4) = 18

2w + 8 = 18

2w = 10

w = 5

AVprozaik [17]3 years ago
3 0

Answer:

5

Step-by-step explanation:

Because the perimeter is the sum of all the sides. 4+4=8 and 18-8=10 so which one added to itself equals 10...5+5=10

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Ann is using a recipe that serves 20 people. the recipe requires 1/2 of a cup of sugar. how many cups of sugar does ann beed to
Setler [38]

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1 1/4 cup

Step-by-step explanation:

4 0
2 years ago
Plz answer only if u know ur correct
hichkok12 [17]

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1/2

Step-by-step explanation:

8 0
3 years ago
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There are 10 men and 14 women in Kathleen’s math class. What is the ratio of women to the total number of students in the class?
kari74 [83]

Answer:

14 to 25

Step-by-step explanation:

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5 0
3 years ago
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
5) What is the value of n in the picture?<br> 3n<br> n 14<br> A) 19<br> B) 33<br> C) 57<br> D) 41.5
svetoff [14.1K]
Ok. because those two angles are sumplimentary, (they equal 180 degrees) we can set up an equations.
3n+n+14=180

then isolate the variable
4n+14=180 
     -14   -14
4n=166

then divide to undo the multiplication

4n=166
---   ----
4      4
 
n=41.5

4 0
3 years ago
Read 2 more answers
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