2 years ago

Can someone please help me with this question?

Mathematics

2 answers:

vodka [1.7K]2 years ago

8 0

Answer:

Answer is D hope this helps :)

Step-by-step explanation:

natali 33 [55]2 years ago

4 0

The answer is “D” for the it hope this helps

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Gelneren [198K]

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2 years ago

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What is the value of n? <br> n/-3 - 2 = -18

SCORPION-xisa [38]

Answer:

Step-by-step explanation:

n/-3=-16

n=-16*-3

n=48

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3 years ago

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Only number one please help

Alex73 [517]

Answer:

C) 75 + 50x = 25 + 70x

Step-by-step explanation:

ABC Tech:

$50 an hour. So,for x hours= 50 * x = 50x

Service charge = 75 + 50x

Tech Squad:

$70 an hour. So,for x hours= 70 * x = 70x

Service charge = 25 + 70x

C) 75 + 50x = 25 + 70x

50x - 70x = 25 - 75

-20x = -50

x = -50/-20

x =5/2 = 2 $\frac{1}{2}$ hours

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3 years ago

<img src="https://tex.z-dn.net/?f=%205%7Bx%7D%5E%7B2%7D%20%20%2B%202x%20%3D%207x%20%2B%203x%20%5C%5C%20find%20%5C%3A%20the%20%5C

lana [24]

Answer:

$5 {x}^{2} + 2x = 7x + 3x \\ 5 {x}^{2} + 2x = 10x \\ 5 {x}^{2} = 10x - 2x \\ 5 {x}^{2} = 8x \\ 5x = 8 \\ x = \frac{8}{5} = 1.6 \\ thank \: you$

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2 years ago

200 labourers need 50 days to construct a road of 4 km long. How many labourers are needed to construct 8 km long in 80 days

patriot [66]

Answer:

250

Step-by-step explanation:

Number of labourers * Number of days worked = Total number of working days

Total number of working days to construct a 4km long road: $200*50=10000$

Total mumber of working days to construct a 8km long road: $10000*2=20000$

Labourers: 20000 ÷ 80 = 250.

250 labourers are required.

7 0

3 years ago