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baherus [9]
3 years ago
11

George drew a diagram at the right to represent the number two and two fiths look said Helena this is the same thing as twelve f

iths ​
Mathematics
1 answer:
xxMikexx [17]3 years ago
3 0

That's true: you have

2\dfrac{2}{5}=2+\dfrac{2}{5}=\dfrac{10}{5}+\dfrac{2}{5}=\dfrac{10+2}{5}=\dfrac{12}{5}

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What is 3/-4 ÷ (-2 1/3) ​
attashe74 [19]

Answer:

9/28

Step-by-step explanation:

First transform -2 1/3 to -7/3. Then find the reciprocal of -7/3 which is -3/7. Multiply that to 3/-4 which becomes -9/-28 which equals 9/28.

5 0
3 years ago
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Which of the following cars is traveling at the fastest rate of speed?
-Dominant- [34]
Divide the miles by the hours....
141/3=47
205/5=41
97/2=48.5
172/4=43

Answer: 97 miles in 2 hours
8 0
3 years ago
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Find the factored form of 13x+x^2=0
ASHA 777 [7]

Change it into the form

ax^2 + bx + c = 0

x^2 + 13x + 0 = 0

This equation has a common factor, x. Factorise it out.

<h2>x (x + 13) = 0</h2>
8 0
3 years ago
Help please, I attached the question. Is it a!? <br> 
AVprozaik [17]

Answer:

A

Step-by-step explanation:

Recall that for a quadratic equation of the form:

0=ax^2+bx+c

The number of solutions it has can be determined using its discriminant:  

\Delta = b^2-4ac

Where:

  • If the discriminant is positive, we have two real solutions.
  • If the discriminant is negative, we have no real solutions.
  • And if the discriminant is zero, we have exactly one solution.

We have the equation:

2x^2+5x-k=0

Thus, <em>a</em> = 2, <em>b</em> = 5, and <em>c</em> = -<em>k</em>.

In order for the equation to have exactly one distinct solution, the discriminant must equal zero. Hence:

b^2-4ac=0

Substitute:

(5)^2-4(2)(-k)=0

Solve for <em>k</em>. Simplify:

25+8k=0

Solve:

\displaystyle k = -\frac{25}{8}

Thus, our answer is indeed A.

3 0
3 years ago
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3/2 times 2/3 in the simplest form
Lostsunrise [7]

Answer:

3/2 x 2/3 = 1

Step-by-step explanation:

3 0
2 years ago
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