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iren [92.7K]
3 years ago
8

What is the answer to this math problem 3/10+2/5

Mathematics
2 answers:
romanna [79]3 years ago
7 0
7/10
3/10+(2)2/5
3/10+4/10
7/10
Dominik [7]3 years ago
4 0
Multiply 2/5 by 2 to get 4/10

4/10 + 3/10 = 7/10
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Plz help me NOW I will mark u brainliest
natita [175]

m\% \:  \: of \:  \: p\% \:  \: of \:  \: n \\  =  \frac{m}{100}  \times  \frac{p}{100}  \times n \\  =  \frac{m \times p \times n}{100 \times 100}  \\  =  \frac{mnp}{10000}

Hope you could get an idea from here.

Doubt clarification - use comment section.

4 0
2 years ago
X÷4+9=12 plzzzzzzzzzzzzzzz help step by step
xeze [42]
So we are trying to solve for x so in order to do that we need to get x by itself on one side of the equal sign

first we are going to combine like terms on each side of the equal side

so on the left side we see 4+9 these are booth whole numbers not attached to a variable so we can simplify this by adding these two values together making our equation: x/13 = 12

our x is still not by itself so in order to get it by itself we need to get rid of that 13

we need that x is being divided by 13 so in order to get rid a divided value we have to do the opposite to both sides - multiply by 13 on each side!

x/13 x 13 = x
12 x 13 = 156

so our equation is now:
x = 156

is our x by itself on one side of the equal sign? yes! so our x value is 156
6 0
3 years ago
The diagram shows an 8 foot ladder leaning against a wall
Solnce55 [7]
This question needs more information. So what if a diagram shows an 8 foot ladder leaning against a wall?
8 0
3 years ago
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Which quadratic equation has roots - 2 and 1/5 :
Sladkaya [172]

Answer:

5 {x}^{2}  \:  +  \: 8x \:  - 2 \:  =  \: 0

Step-by-step explanation:

sum \: of roots =  - 2 +  \frac{1}{5}  = - \frac{8}{5}  \\ product \: of \: roots =  - 2 \times  \frac{1}{5}  =  -  \frac{2}{5}  \\ from \: general \: equation \\ a {x}^{2}  + bx + c = 0 \\  {x}^{2}  +  \frac{8}{5} x  \: -   \frac{2}{5}  = 0 \\ 5 {x}^{2}   \:  +  \: 8x \:  - 2 \:  =  \: 0

7 0
2 years ago
An isosceles triangle has two sides of equal length, a, and a base, b. The perimeter of the triangle is 15.7 inches, so the equa
Orlov [11]

it cant be a negative number or zero

 so now you are left with 0.5, 2 and 7.9

15.7 - 0.5 = 15.2 ( 15.2/2 = 7.6)  this is possible

15.7 - 2 = 13.7 ( 13.7/2 = 6.85) this is possible

15.7 - 7.9 = 7.8 ( 7.8/2 = 3.9) (7.9/2 = 3.95) since the sides would be shorter than half the base this is not possible to form a triangle


so b can be either 0.5 or 2



Please mark brainliest

4 0
3 years ago
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