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Sedaia [141]
3 years ago
14

Simplify fully: 4d² - 6d² + 5d² and 7x + 5y - 3x - 8y

Mathematics
1 answer:
Setler [38]3 years ago
3 0
1)
<span>4d² - 6d² + 5d² =  d²(4-6+5)  = 3d²

2)</span>
<span>7x + 5y - 3x - 8y = 4x  -3y</span>

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Find the zeros of the function by factoring 3x^2+ 10x=8​
Wittaler [7]

Answer:

x=\frac{2}{3}, -4

Step-by-step explanation:

hope this helps!

6 0
3 years ago
The scale factor of the dimensions of two similar wood floors is 5 ​: 3. It costs ​$144 to refinish the smaller wood floor. At t
Eva8 [605]

Answer: 240

Step-by-step explanation:

144/3 = 48

5x48= 240

6 0
3 years ago
Which properties justify the steps taken to solve the system? {3x−2y=10 4x−3y=14
Alexeev081 [22]
The answer is: Substitution property of equality.

 The explanation is shown below:

1. To solve this problem you must apply the proccedure shown below:

 2. When you clear the variable x from the first equation, and subtitute it into the second equation, you obtain:

 <span>3x−2y=10
 x=(10+2y)/3

 4x−3y=14
 </span>4[(10+2y)/]−3y=14
<span> y=-2

 3. When you subsitute y=-2 into the first equation and clear the x, you have:

 x=2
 </span>
7 0
3 years ago
Read 2 more answers
I don’t know how to do any of this
mojhsa [17]

Answer:

The length of x in #1 is 15.57

Step-by-step explanation:

Let's use #1 as an example to teach show you how to do this. In a right triangle we can solve these using trig. In this particular one, we have the measure adjacent to the angle and we are looking for the one opposite of the angle. So we look at all the trig functions and select the one that uses both of those two terms.

Sinα = Opp/Hyp

Tanα = Opp/Adj

Cosα = Adj/Hyp

As you can see, Tan is the function we are looking for. So we plug in all known information into that equation.

Tanα = Opp/Adj -----> Plug in known values

Tan(60) = x/9 ----->Calculate out the trig function

1.73 = x/9 -----> Multiply by the denominator to solve

15.57 = x

3 0
3 years ago
Can someone plz help me I am really struggling
Neporo4naja [7]

Answer:

dylan has more water

Step-by-step explanation:

1000 milliliters = 1 liter

therefore 600 milliliters = .6 liters

1 - .6 = .4

the liter has .4 more liters of water or 400 more milliliters

3 0
3 years ago
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