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monitta
3 years ago
5

Anica says that she can rewrite ANY subtraction problem as an addition problem. Is she correct? Explain how you know!

Mathematics
2 answers:
Mekhanik [1.2K]3 years ago
3 0
Yeah i think so because
5-2=3
3+2=3
?

70-20=50
50+20=70
idek
Digiron [165]3 years ago
3 0
I think it’s true because of family pyramids or whatever they’re called. Like 6-2=4 can be rewritten as 4+2=6 or 2+4=6 if that makes sense :))
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Please help!<br> what name is given to the shape of the graph of a quadratic function?
wlad13 [49]

Answer:

It's a parabola.

Step-by-step explanation:

8 0
3 years ago
Determine whether or not the three points are on the same line.<br> (1, -3) (3, 1) (5, 7)
alukav5142 [94]

Answer:

They are on the same line

Step-by-step explanation:

6 0
3 years ago
4 questions 20 points
Dvinal [7]
1. Cross multiply
35x = 5(11)
35x = 55
Divide both sides by 35
x = 55/35
x = 11/7

2.  (x - 2)/x = 3/8
Cross multiply
3x = 8(x - 2)
3x = 8x - 16
Subtract 8x from both sides
-5x = -16
divide both sides by -5
x = -16/-5
x = 16/5 OR  3 1/5

3.  (a + 1)/(a - 1) = 5/6
cross multiply
6(a + 1) = 5(a - 1)
distribute
6a + 6 = 5a - 5
subtract 5a from both sides
a + 6 = -5
subtract 6 from both sides
a = -11

4.  (1/3)x - 4 = (2/3)x + 6
multiply each term by 3 to clear the fractions
x - 12 = 2x + 18
subtract x from both sides
-12 = x + 18
subtract 18 from both sides
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3 0
3 years ago
Deepak randomly chooses two marbles from the bag,
Alika [10]
Green 5/15
red 2/15
that should be your answer
3 0
3 years ago
Read 2 more answers
What are the coordinates of the x-intercepts of the parabola y = x² - 8x + 15?
tamaranim1 [39]

Answer:

(3, 0) and (5, 0)

Step-by-step explanation:

we have

y=x^{2}-8x+15

we know that

The x-intercepts are the values of x when the value of y is equal to zero

so

For y=0

x^{2}-8x+15=0

The formula to solve a quadratic equation of the form

ax^{2} +bx+c=0

is equal to

x=\frac{-b\pm\sqrt{b^{2}-4ac}} {2a}

in this problem we have

x^{2}-8x+15=0  

so

a=1\\b=-8\\c=15

substitute in the formula

x=\frac{-(-8)\pm\sqrt{-8^{2}-4(1)(15)}} {2(1)}

x=\frac{8\pm\sqrt{4}} {2}

x=\frac{8\pm2} {2}

x=\frac{8+2} {2}=5

x=\frac{8-2} {2}=3

so

x=3, x=5

therefore

The x-intercepts are (3,0) and (5,0)

4 0
3 years ago
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