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kow [346]
3 years ago
13

Multiply and simplify. (4a + 6b)(2a - 2b)

Mathematics
1 answer:
blsea [12.9K]3 years ago
6 0
(4a + 6b) x (2a - 2b)

the answer would be 8a2 + 4ab - 12b2
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For less than a number is no more than six
photoshop1234 [79]

Answer:

1

Step-by-step explanation:

lowest

3 0
3 years ago
In how many years will the interest on £100 at 6% amount to £12?
lesya [120]
Given:
Principal = <span>£100
Interest rate = 6%
Interest = </span><span>£12

Simple Interest is computed by multiplying the principal by its interest rate and term

Interest = Principal * rate * term
12 = 100 * 0.06 * term
12 = 6 * term
12/6 = term
2 = term

It will take 2 years for </span>£100 to earn <span>£12 at 6%</span>
3 0
3 years ago
Read 2 more answers
"if z is a standard normal variable, find the probability. the probability that z lies between 0 and 3.01"
spayn [35]
Probability between z = 0 and z = 3.01 is given by

P(0<z<3.01) = P(z<3.01) - P(z<0)

Reading from the z-table, we have
P(z<0) = 0.5
P(z<3.01) = 0.9987

Hence, P(0<z<3.01) = 0.9987 - 0.5 = 0.4987

5 0
3 years ago
What are the domain and range of the function f(x)= x^4 -6x^3 -4x^2 54x -45?
Agata [3.3K]
Domain is the numbers you can use
we can use all real numbers for this one

rangge is the numbers we get from inputting the domain

well, this is a 4th degree, so we need to find the minimum,because the leading coefient is positive so it opens up, and as x approaches negative and positive infinity, then f(x) approaches infnity

find minimum
take derivitive
f'(x)=4x^3-18x^2-8x+54
the zeroes are at about -1.652 and 1.9381 and 4.2145
we use a sign chart
the minimum occurs at hwere the derivitive changes from negative to positive
that is at -1.652 and 4.2145
evaluate f(-1.652) and f(4.2145)
f(-1.652)=-110.626
f(4.2145)=-22.124
the least value is -110.626
that is the minimum

so the domain is all real numbers
range is from -110.626 to infinity
8 0
3 years ago
If Tan A=5/12 then find cot A, cos A and Sin A
Ostrovityanka [42]

Cot A=1/tan A=12/5

cos A= 12/13

sin A=5/13

Draw a right angled triangle

the hypotenuse is the longest side which is 13 using Pythagoras theorem

the side opposite the angle A is 5

the side closest to the angle A which is called the adjacent is 12

sinA =opp/hyp

cos A= adj/hyp

cotA =1/tanA=cos A/sinA

Note: Pythagoras theorem is

hyp²=opp²+adj²

7 0
2 years ago
Read 2 more answers
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