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JulijaS [17]
2 years ago
6

Factorise ab+cb+ad+cd ​

Mathematics
2 answers:
abruzzese [7]2 years ago
6 0

Answer:

well the factor: Add and subtract the second term to the expression and factor by grouping.     (a+c)(b+d)

Step-by-step explanation:

Hope this is helpful! God Bless you !

shutvik [7]2 years ago
4 0

Answer:

ab=a×b

cb=c×b

ad=a×d

cd=c×d

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What is the missing number
Anna35 [415]

Answer:

I got 235, which works in perfectly into the problem...

Step-by-step explanation:

7 0
2 years ago
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Which algebraic expression represents "one-third of the number s, plus t"?
TiliK225 [7]

Answer:

A) s/3 +t

Step-by-step explanation:

To represent 1/3 of a number, we can simply divide this number by 3, meaning if s is the number, 1/3 of s would be s/3. Now to add t all we have to do is + t, making our answer s/3 + t

6 0
3 years ago
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Penny Weights, use the weights of the post 1983 pennies to construct a 98% confidence interval estimate of the standard deviatio
Ronch [10]

Answer:

c. 0.1391 < Ï < 0.2311

Step-by-step explanation:

The formula for Confidence Interval is given as:

Mean ± z × Standard deviation/√n

Z score for 98% confidence interval = 2.326

Mean = Significance level = 100% - 98%

= 2% = 0.02

Standard deviation = S=0.0165

n= 37

Hence,

Confidence Interval =

0.02 ± 2.326 × 0.0165/√37

0.02 ± 0.0063094687

Confidence Interval

0.02 - 0.0063094687

= 0.1391

0.02 ± 0.0063094687

= 0.2311

Hence, the Confidence Interval = (0.1391, 0.2311)

= c. 0.1391 < Ï < 0.2311

7 0
3 years ago
Explain how to solve for coordinates for the equation x + y = 7. Include some coordinates in your answer.
koban [17]

Answer:

y = mx + b would be your starting equation. You need two coordinates for to find your slope (mx). You multiple your slope (m) with your x-coordinate given (x). Then after multiplying, you subtract that with y to find your b. Thus, the answer. You'll want to ask yoru teacher for more help if you don't get it. :)

8 0
2 years ago
jenny has 50 square tiles she arranges the tiles in to a rectangular array of 4 rows. how many tiles are left over
tresset_1 [31]
She would be able to make 12 piles 12x4=48 50-48=2 2 tiles left over

5 0
3 years ago
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