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Georgia [21]
4 years ago
9

Solve this:/ 2m - 5 - 5 = -3m + 15

Mathematics
1 answer:
ValentinkaMS [17]4 years ago
5 0
2m-5-5= -3m +15
2m -10= -3m+15
2m+3m= 15+10
5m= 25
m= 25/5
m=5
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Construction company needs to remove 30 tons of dirt from the construction site they can remove 3/5 tons of dirt each hour How l
luda_lava [24]

Answer:

30t-x

3/5t=1hour

30 \times  \frac{5}{3}  = 50

they need 50hours

5 0
3 years ago
Cynthia purchase 3 video games from the sales bin that were each the same price. She also bought 2 DVDs for $15 each. Cynthia sp
mr Goodwill [35]
Twenty nine dollars for each game. I added both dvds. 15 plus 15 is 30. then subtracted it by the total price, than got 87. I divided by 3 and got 29
5 0
4 years ago
The sides of a triangle are 5:8:10 and it's perimeter is 23 cm. find the area of triangle. ​
Tju [1.3M]

Answer:

19.81cm^2

Step-by-step explanation:

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sqrt(p*(p-a)*(p-b)*(p-c))

Plugging the values into this formula gives 19.81cm^2.

8 0
3 years ago
Two cylinders are similar. The surface area of one is 49 cm ^ 2 , and the surface area of the other is 121 cm ^ 2 . Find the sca
dalvyx [7]

Answer:

7 : 17.29

Step-by-step explanation:

==>Given:

Two similar cylinders:

Surface area of Cylinder A = 49cm²

Surface area of Cylinder B = 121cm²

==>Required:

Scale factor between both cylinders

==>Solution:

We can easily get the scale factor between both by taking the following steps:

=>Set up a ratio of their surface area:

Smaller cone surface area : larger cone surface area

49:121

= 49/121

=>Simplify the ratio gotten:

Dividing the denominator and the numerator by 7, would give us,

7/17.29

= 7:17.29

8 0
3 years ago
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Rhett is solving the quadratic equation 0= x2 – 2x – 3 using the quadratic formula. Which shows the correct substitution of the
Artemon [7]

Answer:

StartFraction 2 plus or minus StartRoot (negative 2) squared minus 4(1)(negative 3) EndRoot Over 2(1) EndFraction

Step-by-step explanation:

General quadratic equation: ax^2 + bx + c

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Quadratic formula:

x = \frac{-b \pm \sqrt{b^2-4(a)(c)}}{2(a)}

Replacing

x = \frac{2 \pm \sqrt{(-2)^2-4(1)(-3)}}{2(1)}

8 0
3 years ago
Read 2 more answers
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