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jarptica [38.1K]
3 years ago
10

Can i get help on this?

Mathematics
1 answer:
cupoosta [38]3 years ago
7 0

Answer:

The answer is D.

Step-by-step explanation:

An example of this is

3+5+1= 9

5+3+1= 9

etc

You might be interested in
Clara has $67 in her piggy bank. She spent x dollars on a dog bowl and now has $57.4 remains.
kolezko [41]

Answer:

B) 57.4+x=67

Step-by-step explanation:

We take the amount in the piggy bank.  Then we take the amount spent and add it to the amount she has left.  These two amounts should be equal

piggy bank = spent + left

67 = x + 57.40


6 0
4 years ago
Dmitri needs 6 liters of a 16% solution of sulfuric acid for a research project in molecular biology. He has two supplies of sul
mylen [45]

Answer:

4 litres of 12% solution

2 litre of 24% solution

Step-by-step explanation:

Let the 12% solution = l

Let the 24% solution = h

Dimitri needs a total of 6 litres of both :

l + h = 6 - - - - - - - - (1)

He needs a mixture of both volumes of both to give a 16% volume

12%l + 24%h = 16% * 6

0.12l + 0.24h = 0.96 ----(2)

From (1)

l + h = 6;

l = 6 - h

Substitute l =6-h into (2)

0.12(6 - h) + 0.24h = 0.96

0.72 - 0.12h + 0.24h = 0.96

0.72 + 0.12h = 0.96

0.12h = 0.96 - 0.72

0.12h = 0.24

h = 0.24 / 0.12

h = 2

From ;

l = 6 - h

l = 6 - 2

l = 4

5 0
3 years ago
Expand and simplify (x+2) (x+3) (x+4)
NikAS [45]

Answer:

3x+9

Step-by-step explanation:

1(x+2) +1(x+3) +1(x+4)

<em>x+2+x+3+x+4</em>

<em>x+x+x+2+3+4</em>

<u><em>3x+9</em></u>

8 0
3 years ago
What are the values of x in the equation 4x2 + 4x - 3 = 0?
9966 [12]

Answer:

x=  0.5

or x=  -1.5

Step-by-step explanation:

Let's solve your equation step-by-step.

4x2+4x−3=0

Step 1: Factor left side of equation.

(2x−1)(2x+3)=0

Step 2: Set factors equal to 0.

2x−1=0 or 2x+3=0

x= 1/2 or x= −3/2

5 0
3 years ago
Watch help video
inessss [21]

(-4 , 2 ) so x1 = -4 and y1 = 2. The slope is still 1/2 so m = 1/2. y = 1/2 x +4 final answer

4 0
3 years ago
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