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2 years ago

Plz help i will mark you brainiest

Mathematics

1 answer:

Anettt [7]2 years ago

7 0

Answer: We know how much 4 pizza's costs, we want to find out the regular cost of 1 pizza

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0.045 is 1% of what number?

Ivanshal [37]

4.5

1/100 × 4.5 = 0.045

Hope it helps

8 0

1 year ago

Read 2 more answers

15 is 10 % of what number

Len [333]

15*10=150

15 is 10% of 150

4 0

2 years ago

12+4y^2-7<br><br><br> please help i will give brainliest

Dennis_Churaev [7]

Answer: 4 2^ + 5

Step-by-step explanation:

;w;

8 0

2 years ago

You throw a stone with a force of 55.1 N. It accelerates at 41.6 m/s2.

Mice21 [21]

Answer:

Mass = 1.3 Kilograms.

Step-by-step explanation:

Given the following data;

Force = 55.1 N

Acceleration = 41.6 m/s²

To find the mass of the stone in kg;

Newton's Second Law of Motion states that the acceleration of a physical object is directly proportional to the net force acting on the physical object and inversely proportional to its mass.

Mathematically, it is given by the formula;

Force = mass * acceleration

Substituting into the formula, we have;

55.1 = mass * 41.6

$Mass = \frac {55.1}{41.6}$

Mass = 1.3 Kilograms

6 0

2 years ago

Helllpppppppppp please someone.?????

Liula [17]

Answer:

(-5,5)

Step-by-step explanation:

Multiply the first equation by -2,and multiply the second equation by 1.

−2(x+5y=20)

1(2x−7y=−45)

Becomes:

−2x−10y=−40

2x−7y=−45

Add these equations to eliminate x:

−17y=−85

Then solve−17y=−85for y:

(Divide both sides by -17)

y=5

x+5y=20

Substitute 5 for y in x+5y=20:

x+(5)(5)=20

x+25=20(Simplify both sides of the equation)

x+25+−25=20+−25(Add -25 to both sides)

x=-5

6 0

2 years ago