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miss Akunina [59]
3 years ago
8

What is the answer to 2 and 3/4 +4/5

Mathematics
1 answer:
elena-14-01-66 [18.8K]3 years ago
5 0
71/20 i believe. Is it multiple choice?
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Solve the equation 2x^{2}+9x-1=x to the nearest 10th
Scilla [17]

Answer:

2x2+9x−1=x

Step 1: Subtract x from both sides.

2x2+9x−1−x=x−x

2x2+8x−1=0

Step 2: Use quadratic formula with a=2, b=8, c=-1.

x=

−b±√b2−4ac

2a

x=

−(8)±√(8)2−4(2)(−1)

2(2)

x=

−8±√72

4

x=−2+

3

2

√2 or x=−2+

−3

2

√2

Step-by-step explanation:

This is what I got but I'm not 100% positive. I checked it on a calculator and it seemed to check out.

4 0
3 years ago
Order these numbers from least to greatest. <br><br>5 10/11 <br>117/20 <br>5.84 <br>5.822​
Sliva [168]
Least to greatest: 5 10/11 , 5.822 , 5.84, 117/20.
8 0
3 years ago
15. • Solve the simultaneous equations
tamaranim1 [39]
Answer:
B. 1 and -2
Explanation:
First, add up the equations:
x-x+3y+y=4
4y=4
y=1
Now, plug y into any of the original equations above and solve for x:
-x+1=3
-x=2
x=-2
Therefore, the answer is B. 1 and -2
5 0
3 years ago
How would i graph <br> y=− 5/2x-3<br> and<br> x−y=−4<br> (_,_)
SashulF [63]

Given:

The system of equations is

y=-\dfrac{5}{2}x-3

x-y=-4

To find:

The graph of the given system of equations and its solution.

Solution:

The table of values for y=-\dfrac{5}{2}x-3 is

x        y

-4       7

-2       2

0      -3

Plot these points and connect them by a straight line.

The table of values for x-y=-4 is

x          y

-4         0

-2         2

0         4

Plot these points and connect them by a straight line.

From the below graph it is clear that the lines intersect each other at point (-2,2).

Therefore, the solution of given system of equation is (-2,2).

6 0
3 years ago
Cual es la raíz cuadrada de 125
Shtirlitz [24]
11,1..... o 5*(raiz)de5
8 0
3 years ago
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