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pentagon [3]
3 years ago
9

Write an equivalent expression: 13x + 12 – 5x + 8

Mathematics
1 answer:
Anton [14]3 years ago
3 0

Answer:

8x +20

Step-by-step explanation:

combine like terms

8x + 20

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Divide.<br><br> 219÷23<br><br><br> 1 11/27<br><br> 2 2/27<br><br> 3 1/6<br><br> 12/19
iren [92.7K]

Answer:

9 12/23

Step-by-step explanation:

4 0
3 years ago
Please help, the question is on the picture.
Taya2010 [7]
X^2 + 14x + 17 = -96
x^2 + 14x + 113 = 0
x^2 + 14x + 49 + 64 = 0
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x = -7 + or - 8i
6 0
4 years ago
Place this list of irrational numbers in order from least to greatest.
ZanzabumX [31]

Answer:

\sqrt{7},\sqrt{25},\sqrt{42}

Step-by-step explanation:

\sqrt{7} is 2.65 rounded to the nearest hundrendth.

\sqrt{25} is 5.

\sqrt{42} is 6.48 rounded to the nearest hundrendth.

6 0
3 years ago
1. The equation of the locus of a point which is always equidistant from the points (a + b, a - b) and (a - b, a + b) is a) x -
valina [46]

Answer:

c). y + x = 0

Step-by-step explanation:

The locus is a line perpendicular to the line connecting the 2 points and passing through the centre of the line.

The mid-point of the line connecting the given points is:

(a + b + a - b)/2 , (a - b + a + b) / 2

= (a, a)

It's slope = (a + b)- (a - b) / (a - b)- (a + b)

= 2b/ -2b

= -1

So the slope of the line we want is -1/(-1) = 1.

Using the point-slope form of a line:

y - y1 = m(x - x1)

y - a = 1(x - a)

y - a = x - a

x + y = 0

8 0
2 years ago
0, 80,30,140<br><br> What are the third and first quartiles?
RUDIKE [14]
0,30,80,140
Median- 55 (30+80) ÷2
Q1- 15 (0+30) ÷2
Q3- 110 (80+ 140) ÷2 
Hope this helped. (:

5 0
3 years ago
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