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erastova [34]
3 years ago
8

3/5 +9/10= Please answer​

Mathematics
2 answers:
qaws [65]3 years ago
5 0

Answer:

1 1/2

Step-by-step explanation:

3/5 + 9/10

We need a common denominator of 10

3/5 * 2/2   + 9/10

6/10 + 9/10

15/10

10/10   + 5/10

1 + 5/10

1 + 1/2

1 1/2

Art [367]3 years ago
4 0

Answer:

3/2 or 1.5

Step-by-step explanation:

Multiply 3/5 by 2 to make the denominator of both fractions equal.

2 x 3/5 = 6/10

Now that the denominators are equal, add the two fractions together

6/10 + 9/10 = 15/10 = 3/2 or 1.5

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How many times does the quadratic function below intersect the x-axis?<br> y = 2x2 +7x+6
sattari [20]

Answer:

once

Step-by-step explanation:

since the equation is liner, with x simply to the first power, it will only cross the x axis once. x^2 would cross the x axis twice, x^3 would cross it three times, and so on

6 0
3 years ago
I need help with this
Effectus [21]

Answer:

The answer is B

Step-by-step explanation:

5 0
3 years ago
What 2 numbers add to get 2 and multiply to 4
rusak2 [61]
Factor 4
4=1 times 4
2 times 2
they don't add to 2
set up equation
x+y=2
xy=4

first equation, subtract x from both sides
y=2-x
subsitute for y
x(2-x)=4
distribute
2x-x^2=4
add x^2
2x=x^2+4
subtract 2x
0=x^2-2x+4
use quadratic formula which is
if you have ax^2+bx+c=0 then
x=\frac{ -b+/-\sqrt{b^{2}-4ac} }{2a} so

1x^2-2x+4=0
a=1
b=-2
c=4
x=\frac{ -(-2)+/-\sqrt{(-2)^{2}-4(1)(4)} }{2(1)}
x=\frac{ 2+/-\sqrt{4-16} }{2}
x=\frac{ 2+/-\sqrt{-12} }{2}
we have \sqrt{-12} and that doesn't give a real solution
therefor there are no real solutions
but if you want to solve fully
x=\frac{ 2+/-2\sqrt{-3} }{2}
i=\sqrt{-1}
x=\frac{ 2+/-2i\sqrt{3} }{2}
x=1+/-i\sqrt{3}
x=1-i\sqrt{3} or x=1+i\sqrt{3} (those are the 2 numbers)

 





6 0
4 years ago
Helpp ill mark u as brain list​
SCORPION-xisa [38]

Answer:

the second one

-1 -2

3 0

5 1

7 2

5 0
3 years ago
In performing a chi-square goodness-of-fit test for a normal distribution, a researcher wants to make sure that all of the expec
Sholpan [36]

Answer:

The degrees of freedom for the chi square statistic is 7-4=3

3 0
3 years ago
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