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Sphinxa [80]
2 years ago
15

(4a+3b)(2a-5) expand

Mathematics
2 answers:
denis-greek [22]2 years ago
8 0

Answer:

<u>6ab + 8a² - 15b - 20a</u>

Step-by-step explanation:

Expand by using FOIL method

4(2a-5) + 3b(2a-5)

4a(2a) + 4a × -5 + 3b × -5

Simplify terms

8a² - 20a + 6ba -15b

<u>6ab + 8a² - 15b - 20a</u>

Nina [5.8K]2 years ago
6 0
8a^2-14ab-15b if that’s what you mean
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Which is an x-intercept of the continuous function in the
Paladinen [302]

Answer:

(-1, 0), (2, 0), (3, 0)

Step-by-step explanation:

x-intercept of a line is defined by a point where y = 0.

So the point in the form of (x, 0) will be the x-intercept of the given continuous function.

From the table attached,

For x = -1, f(-1) = 0

For x = 2, f(2) = 0

For x = 3, f(3) = 0

Points (-1, 0), (2, 0) and (3, 0) are the x-intercepts of the continuous function f(x).

5 0
3 years ago
Type the correct answer in the box.<br><br><br> In this triangle cosA/cosB= blank
Elina [12.6K]

Answer:

1

Step-by-step explanation:

A triangle is a polygon with three sides and three angles. The types of triangles are scalene triangle, equilateral triangle, right angled triangle and obtuse triangle.  

Trigonometric functions are used to show the relationship between the angles of a triangles and the sides of the triangle. For a right angled triangle, the ratio of the sides can be gotten using trigonometric functions such as:

cosθ = adjacent/hypotenuse, sinθ = opposite/hypotenuse, tanθ = opposite/adjacent

Given the right angle triangle:

cos(A) = adjacent / hypotenuse = 3 / 4.24

cos(A) = 3 / 4.25

cos(B) = adjacent / hypotenuse = 3 / 4.24

cos(B) = 3 / 4.24

cos(A) / cos(B) = (3 / 4.24) ÷ (3 / 4.24) = 1

cos(A) / cos(B) = 1

3 0
3 years ago
Pls help me with i have no help pt 2
ioda

Answer:

2

Step-by-step explanation:

2

4 0
2 years ago
Read 2 more answers
Condense to a single logarithm: 4 log9 11 - 4 log9 7.
Natali [406]

Answer: Log9,(11/7)^4

Step-by-step explanation:

according to the rules of logarithm

1)Subtraction sign(-) becomes division(÷),while addition(+)becomes multiplication (x)

2) the number in front of the log figure becomes an indices

7 0
2 years ago
A national survey of small-business owners was conducted to determine the challenges for growth for their businesses. The top ch
krek1111 [17]

Answer:

A) 12/37

B) 12/46

C) 25/54

D) 29/100

Step-by-step explanation:

Let event A = small-business owner selected economy,

event B = small-business owner selected finding qualified workers,

Thus, probabilities;

P(A)=46/100

P(B)=37/100

P(A∩B)=12/100

A) P(A ∩ B)/P(B) = (12/100)/(37/100) = 12/37

B) P(A∩B)/P(A) = (12/100)/(46/100)= 12/46

C) P(B∩A')= P(B) − P(A∩B) =

37/100 - 12/100 =25/100

P(B∩A')/P(A') =

(25/100)/(1-46/100) = 25/54

D) Using inclusion-exclusion principle;

P(A∪B) = P(A)+P(B)−P(A∩B)=

46/100 + 37/100 - 12/100 = 71/100

Hence, the probability that the owner believes neither that the economy is a challenge for growth nor that finding qualified workers is a challenge for growth is;

P( A' ∩ B') = 1 − P(A∪B)= 1− (71/100)= 29/100

3 0
3 years ago
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