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3 years ago

Which is the value of this expression when a=-2and b=-3

Mathematics

1 answer:

monitta3 years ago

6 0

Let's solve your system by substitution.

a=−2;b=−3

Step: Solve a=−2for a:

a=−2

Step: Substitute−2for a in b=−3:

b=−3

Answer:

a=−2 and b=−3

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Factor the algebraic expression below in terms of a single trigonometric function. sin 2x + sin x - 2

Pie

Answer:

The factored form is (sin x +2)(sin x-1)

Step-by-step explanation:

We have been given the trigonometric function $\sin^2 x +\sinx-2$

We can factor this by AC method. In AC method we multiply the term a and c and then write the middle term b in such a way that the sum/difference is equal to the product 'ac'

Using the method, we can write sinx as 2sinx -sinx

$\sin^2 x +2\sinx-\sin x-2$

Now, we group the first two terms and the last two terms

$(\sin^2 x +2\sinx)+(-\sin x-2)$

Now, we take GCF from each group

$\sin x(\sin x +2)-1(\sin x+2)$

Factor out (sinx+2)

$(\sin x +2)(\sin x-1)$

Therefore, the factored form is (sin x +2)(sin x-1)

7 0

3 years ago

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Chef Rita is cooking for a Sunday brunch. She knows that 22 pancakes can feed 8 people. She is wondering how many people left pa

defon

Chef Rita can feed 20 people.

Explanation:
If 22 pancakes can feed 8 people, then 11 pancakes can feed 4 people (divide both by 2). Since 55 is 11x5, you multiply 4 times 5 to get 20.

Hope this helps!

6 0

1 year ago

Plz help but not if you don't know

balandron [24]

I hope this helps you

Euclid

h^2=4.6

h=2 square root of 6

h^2+6^2=base^2

24+36=base^2

base=2square root of 15

h^2+4^2=height^2

24+16=height^2

height=2 square root of 10

5 0

2 years ago

What is the expanded form of 3×(x+3)^2

saul85 [17]

3x(x+3)^2
3x(x^2 + 6x + 9)
= 3x^3 + 18x^2 + 27x

answer
3x^3 + 18x^2 + 27x

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3 years ago

True or false, 4x-3+x+7 would equal 5x-10

dimulka [17.4K]

Answer:

false

Step-by-step explanation:

if you simplify you get 5x+4=5x-10, which is false

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3 years ago

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