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Nataly_w [17]
2 years ago
10

A construction crew has just finished building a road. The crew worked for 4 4/9 days. If they built 2 1/5 kilometers of road ea

ch day, what is the total length of road they built?
Mathematics
1 answer:
Bingel [31]2 years ago
5 0
I think it would be 965.35 kilometers of road after 44/9 day
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Sam needs to cut a piece of sheet metal into 8 pieces. It takes him 5 minutes to make each cut. How many cuts will Sam Make? Can
Art [367]
If we assume Sam would achieve his aim of cutting the metal into 8 pieces.

Then he will make 8 cuts. It takes him 5 minutes to make each cut. This is how long it takes to make the cut. This only tells us that he will take a total of 8*5 = 40 minutes, to make all the cuts.
 
Sam will make 8 cuts as stated in the question.
3 0
2 years ago
What is the solution? y = 3x - 5 <br> y = 1\3*+3
PSYCHO15rus [73]

Answer:

Step-by-step explanation:

y = 3x - 5

y = 1/3x + 3

3x - 5 = 1/3x + 3....multiply everything by 3 to get rid of the fraction

9x - 15 = x + 9

9x - x = 9 + 15

8x = 24

x = 24/8

x = 3

y = 3x - 5

y = 3(3) - 5

y = 9 - 5

y = 4

solution is : x = 3 and y = 4...or (3,4) <==

3 0
3 years ago
What is commutative property in rational number ? please explain.
slavikrds [6]

Answer:

Commutative property of addition of rational numbers: Two rational numbers can be added in any order. Thus for any two rational numbers a/b and c/d, we have. (a/b + c/d) = (c/d + a/b)

4 0
2 years ago
Sin α = 21/29, α lies in quadrant II, and cos β = 15/17, β lies in quadrant I Find sin (α - β).
Sever21 [200]
\sin(\alpha-\beta)=\sin\alpha\cos\beta-\cos\alpha\sin\beta

\sin\alpha=\dfrac{21}{29}\implies \cos^2\alpha=1-\sin^2\alpha=\dfrac{400}{841}

Since \alpha lies in quadrant II, we have \cos\alpha, so

\cos\alpha=-\sqrt{\dfrac{400}{841}}=-\dfrac{20}{29}

\cos\beta=\dfrac{15}{17}\implies\sin^2\beta=1-\cos^2\beta=\dfrac{64}{289}

\beta lies in quadrant I, so \sin\beta>0 and

\sin\beta=\sqrt{\dfrac{64}{289}}=\dfrac8{17}

So

\sin(\alpha-\beta)=\dfrac{21}{29}\dfrac{15}{17}-\left(-\dfrac{20}{29}\right)\dfrac8{17}=\dfrac{475}{493}
8 0
3 years ago
What is the radius of a sphere with a volume of 7961 cm", to the nearest tenth of a<br> centimeter?
statuscvo [17]

Answer:

12.4 cm

Step-by-step explanation:

Use the sphere volume formula, V = \frac{4}{3}\pir³

Plug in the volume and solve for r, the radius:

V = \frac{4}{3}\pir³

7961 = \frac{4}{3}\pir³

1900.55 = r³

12.39 = r

So, the radius of the sphere is approximately 12.4 cm

6 0
3 years ago
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