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iogann1982 [59]
3 years ago
9

2/3 + -4/5. Show your work!

Mathematics
1 answer:
e-lub [12.9K]3 years ago
3 0
Cross multiplication 2 x 5 = 10 3 x -4 = 12 put that on top as 10 - 12 then do the bottom 3 x 5 = 15 then 10 -12 = -2 Rewrite the fraction it should be -2/15 sorry if I’m wrong :(
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2x + 3y = 9 solve for x
lutik1710 [3]

Answer:

X=9/2-3/2

Step-by-step explanation:

1.Move the variable

2x=9-3y

2.Divide both side

X=9/2-3/2

4 0
2 years ago
0.3m = $4.41 what does m equals?
Sauron [17]
0.3m=$4.41 
just divide $4.41/0.3= m
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3 0
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3 ears of corn cost $1
lisov135 [29]
Yes 3 ears of corn cost $1
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Question 4 of 10
ludmilkaskok [199]

Answer:

Option C. 3√3

Step-by-step explanation:

Please see attached photo for brief explanation.

In the attached photo, we obtained the following:

Opposite = a

Adjacent = 3

Hypothenus = 6

Angle θ = 60°

We can obtain the value of 'a' as follow:

Tan θ = Opposite /Adjacent

Tan 60° = a/3

Cross multiply

a = 3 x Tan 60°

But: Tan 60° = √3

a = 3 x Tan 60°

a = 3 x √3

a = 3√3

Therefore, the length of the altitude of the equilateral triangle is 3√3.

5 0
3 years ago
Find the length of line segment UV.
pshichka [43]

Answer:

The length of the line segment UV is 76 units

Step-by-step explanation:

In a triangle, the line segment joining the mid-points of two sides is parallel to the third side and equal to half its length

In Δ ONT

∵ U is the mid-point of ON

∵ V is the mid-point of TN

→ That means UV is joining the mid-points of two sides

∴ UV // OT

∴ UV = \frac{1}{2} OT

∵ UV = 7x - 8

∵ OT = 12x + 8

∴ 7x - 8 = \frac{1}{2} (12x + 8)

→ Multiply the bracket by \frac{1}{2}

∵ \frac{1}{2} (12x + 8) =  \frac{1}{2} (12x) +  \frac{1}{2} (8) = 6x + 4

∴ 7x - 8 = 6x + 4

→ Add 8 to both sides

∴ 7x - 8 + 8 = 6x + 4 + 8

∴ 7x = 6x + 12

→ Subtract 6x from both sides

∴ 7x - 6x = 6x - 6x + 12

∴ x = 12

→ Substitute the value of x in the expression of UV to find it

∵ UV = 7(12) - 8 = 84 - 8

∴ UV = 76

∴ The length of the line segment UV is 76 units

8 0
3 years ago
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