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Aloiza [94]
3 years ago
10

PLEASE HELP AND ANSWER BOTH QUESTIONS

Mathematics
2 answers:
kati45 [8]3 years ago
5 0
1.)    16k^2 + 56kj + 49j^2


2.) 4y^2 - 36xy + 81x^2
nydimaria [60]3 years ago
3 0
D is your answer

Expand and do FOIL method (first outside inside last)
simplify and then choose right answer

A is your answer

Do the same thing

hope this helps
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Long division with work shown 985÷7
ser-zykov [4K]
The answer is 14.715 do the work on your own
3 0
3 years ago
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Dennis works at a frozen yogurt store in the summer. He
Lyrx [107]

Answer:

100x+150y≤1200

y≤8-2x/3

slope = -2/3

y-intercept = (0,8)

Step-by-step explanation:

I graphed it on my calculator but I'm not really sure how to explain it beyond just sharing a screenshot of the image

I hope that helps

6 0
3 years ago
A retail shop is replacing their flooring with laminate wood. The floor plan is shown below. Determine the total square feet of
Pavlova-9 [17]

Answer:

its 123 look at the immage

Step-by-step explanation:

3 0
2 years ago
8 is 40% of what number? Please show your work
KengaRu [80]
Do a proportion
40/100= 8/x
8 x 100= 800
Cross multiply and divide
800 divided by 40= 20
So answer is 20
5 0
3 years ago
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A sample of 100 people is classified by gender (male/female) and by whether they are registered voters. The sample consists of 8
uysha [10]

Answer:

12

Step-by-step explanation:

Given :

                                    Male         Female        Total

Registered                                                          60

Non registered                                                   40

Total                          20                  80    

Solution :

N= 100

Formula of expected frequency = E_{ij}=\frac{T_i \times T_j}{N}

E_{ij}= expected frequency for the ith row/jth columm.

T_i = total in the ith row

T_j= total in the jth column

N = table grand total.

So, using formula  E_{11}=\frac{T_1 \times T_1}{100}

E_{11}=\frac{60 \times 20}{100}

E_{11}=12

E_{12}=\frac{T_1 \times T_2}{100}

E_{12}=\frac{60 \times 80}{100}

E_{12}=48

E_{21}=\frac{T_2 \times T_1}{100}

E_{21}=\frac{40 \times 20}{100}

E_{21}=8

E_{22}=\frac{T_2 \times T_2}{100}

E_{22]=\frac{80 \times 40}{100}

E_{22}=32

Expected frequency table

                                    Male         Female        Total

Registered                  12                  48            60

Non registered           8                   32             40

Total                           20                  80    

So, the expected frequency for males who are registered voters are  E_{11}=12

5 0
3 years ago
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