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Bezzdna [24]
3 years ago
9

3 Math Questions 1.) 2x^2-2x-4=0 2.) x^2+8x+15=0 3.) 2x^2=18x+20

Mathematics
1 answer:
Misha Larkins [42]3 years ago
3 0
Man factoring trinomials can be a pain

since the first coefficient for 2 of them is greater than one u can do the decomposition method
the middle one is straight forward do the diamond method and u get 2 answers
find what multiplies to 15 and adds to 8 and those 2 numbers are your answers
there will always be 2 answers
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Text
Mariana [72]

Thislink has the answer: brainly.com/question/19701013?answering=true&answeringSource=greatJob%2FquestionPage%2F3

5 0
3 years ago
Please show your work
White raven [17]

Let a,b & c be the number of cookies Adrian, Bobby and Calvin baked respectively.

(a+b+c)/3 =138

(a+b)/2 =136

a+b=272

a=272-b

(b+c)/2 =125

b+c=250

c=250-b

Sub a=272-b and c=250-b into (a+b+c)/3 =138,

(a+b+c)/3 =138

[(272-b)+b+(250-b)]/3 = 138

272-b+b+250-b = 414

-b = -108

b=108

From the above,

a=272-b

=272-108

a=164

c=250-b

=250-108

c=142

∵ a=164

b=108

c=142

∴ Adrian baked 164 cookies.

Bobby baked 108 cookies.

Calvin baked 142 cookies.

3 0
3 years ago
Marcie solved the following inequality, and her work is shown below:
irakobra [83]
She didn't make any mistake
7 0
3 years ago
Read 2 more answers
Given B=45°, C=105°, and a=8, find the exact value of b in triangle ABC
Veronika [31]

Answer:

hope the screenshot will help

Step-by-step explanation:

7 0
3 years ago
How do u write 5(2x - 1) in a distributive property
Nookie1986 [14]

Answer:

5(2x-1) = 5(2x) - 5(1)

Step-by-step explanation:

The distributive property states that multiplying a sum or difference of two terms by a number is equal to multiplying the same number with each term of the sum or difference separately and then adding the products.

It can be written as:

a(b+c) = ab + ac

or

a(b-c) = ab - ac

So, for the given question,

=>5(2x-1) = 5(2x) - 5(1)

5 0
3 years ago
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