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Debora [2.8K]
3 years ago
10

(X-1)(x+2) + (x-3)(x+1)

Mathematics
1 answer:
Vsevolod [243]3 years ago
3 0

Answer:

2x²-x-5

Step-by-step explanation:

When multiplying 2 brackets, use the FOIL method. That is, multiply the FIRST terms of each bracket, then the OUTER ones (first term of first bracket and last term of second bracket), INNER (last term of first bracket and first term of second bracket) and finally the LAST terms of each bracket. Thereafter, add up the like terms.

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Solve the system of equations in the workspace below: <br> 2x - y = 16<br> x + y = 5
Ad libitum [116K]
Already you can see that -y and y will make a zero
add both together
3x=21
x=7

plug x in
7+y=5
y=-2
7 0
3 years ago
of 300 dentist surveyed 60% said they recommend flossing twice a day. how many dentist many dentist recommend flossing twice a d
Nezavi [6.7K]

Answer:

180

Step-by-step explanation:

10% of 300=30

30*6= 180 (to get 60 percent you multiply 10% by 6)

60%=180

4 0
3 years ago
F(t)=30(0.97)∧t <br><br> = rate of change
Vedmedyk [2.9K]
<span>Hey there, Lets solve this together.  

</span>F(t)=30(0.97)^t 

A = (p+r)^t  

<span>The variable (R) will be representing the rate as a decimal. 

When you solve for (R) multiply by 100 to get the percentage. A percentage is </span><span>a rate, number, or amount in each hundred. 

</span><span>"0.97" will be replaced by "(97/100)"
</span>
<span>Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the given equation  
</span>
Ft-((30))97/100) * t) = 0 

Rewrite the whole as a fraction using  10 <span> as the denominator : 
</span>
ft = ft/1 = ft * 10/10 

The equation now takes the shape :
   t  •  (10f-291)<span>  = 0
</span>
<span><span> f = 291/10 = 29.100

</span> t = 0</span>


<span>Positive = Growth 

Negative = Decay  
</span><span>
</span>1 + r = .97 
<span>
</span>r = -0.03 <span> 
</span>

<span>

</span>
5 0
3 years ago
Peter shot 40 free throws. He made 80% of his shots. What fraction is equivalent to 80%? Pleas answer im trying to get my work d
k0ka [10]

Answer:

32 free throws.

Step-by-step explanation:

It is given that,

Peter shot 40 free throws. He made 80% of his shots.

We need to find the fraction that is equivalent to 80%.

It means we have to find 80% of 40. It can be calculated as follows :

F=\dfrac{80}{100}\times 40\\\\=32

80% of 40 is equivalent to 32 free throws.

4 0
3 years ago
The three sides of a triangle measures 9.97 m 10.1 m and 0.53 m what is the distance around the triangle
Virty [35]
You are calculating the perimeter of the triangle.

Just add up the 3 side lengths.  It's 20.6 meters.
5 0
3 years ago
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