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igor_vitrenko [27]
3 years ago
7

(5 + 61) - (12 + 71)

Mathematics
2 answers:
Lesechka [4]3 years ago
5 0

Answer:

-17

Step-by-step explanation:

Look at the attachment

k0ka [10]3 years ago
3 0

Answer:

-17

Step-by-step explanation:

(5+61)-(12+71)

(66)-(83)

-17

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If you used 0.5 ml of sample and 2.5 ml of diluent what is your dilution ratio?
Vikki [24]

Answer:

1/6

Step-by-step explanation:

I think it is:

0.5/(0.5+2.5) = 0.5/3 = 1/6

6 0
3 years ago
Two forces act on an object. The first Force has a magnitude of 400 Newtons and acts at an angle of 30 degrees as measured from
Sedaia [141]

ANSWER

Option D is correct

EXPLANATION

We resolve the forces into component forms.

F_1 = 400 \cos(30) i + 400 \sin(30) j

F_1 = 200  \sqrt{3} i +200j

Also the second is resolved to obtain,

F_2= 280 \cos(135) i + 280 \sin(135) j.

F_2=  - 140 \sqrt{2} i + 140  \sqrt{2}  j

To find the resultant vector, V, We add the corresponding components of the two forces to get:

V=F_1+F_2

\implies \: V = (200  \sqrt{3} - 140 \sqrt{2} )i + (200 + 140 \sqrt{2})j

The correct answer is D.

3 0
3 years ago
Mike and alice recycled 147 bottles altogether. Mike recycled 6 times as many bottles as Alice. How many bottles did alive recyc
meriva

total=147

a:m

1:6 =7

147÷7=21

21×1=21

alice recycled 21 bottles

8 0
4 years ago
Read 2 more answers
Combine like terms to create an equivalent expression: <br><br> 8t+1+(-4t)+(-6)
kvv77 [185]
8t + 1 + (-4t) + (-6) =
8t + 1 - 4t - 6 =
4t - 5 <==
8 0
3 years ago
Read 2 more answers
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iVinArrow [24]

Answer:

The correct option is D ....

Step-by-step explanation:

Angle is ending at the point = (-3, -4)

Signs of both x and y are negative therefore it is in the third quadrant.

To find the the tangent of an angle we have to find  the ratio of the length of the opposite side to the length of the adjacent side.

In this question the opposite side of the angle is of 4 units and the adjacent side of the angle is 3 units.

tanθ = y/x

tanθ = -4/-3

tanθ = 4/3

Thus the correct option is D ....

5 0
4 years ago
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