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3 years ago

Simplify this algebraic expression completely. 5y- 3(y + 2)

Mathematics

2 answers:

blagie [28]3 years ago

8 0

Distributive property: 5y-3y-6

Combine like terms: 2y-6

So there's your answer

xxTIMURxx [149]3 years ago

3 0

Answer:

3y-3+y

Step-by-step explanation:

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What are the solution(s) to the quadratic equation 50 - x² = 0?

grandymaker [24]

Answer:

The answer is C.

Step-by-step explanation:

$50-x^2=0$

$x^2=50$

$x=\pm \sqrt{50} =\pm \sqrt{25*2}=\pm 5\sqrt{2}$

The answer is C (I am assuming that it isn't 5/2).

7 0

2 years ago

5y + 3 = 4y - 9 what is y?

Elena L [17]

$y = - 12$

Step-by-step explanation:

$5y - 4y = - 9 - 3 \\ y = - 12$

6 0

3 years ago

I decide to bake some cakes.I need 150g of flour for 12 cakes.How much flour do I need for 30 cakes?

blagie [28]

150 / 12 = 11.6666666667
11.6666666667 x 30 = approximately 350g of flour for 30 cakes

7 0

3 years ago

10f – 6 – 10f = -8(-2f - 10) + 10

netineya [11]

Answer:

f= -6 i think

8 0

2 years ago

A robot moving forward at a constant speed takes 2.5 hours to travel 1 kilometer. Moving forward at this same constant speed, it

makvit [3.9K]

Answer:

The length of the hallway is 10 m.

Step-by-step explanation:

Given:

Time taken to cover 1 km = 2.5 hours

Distance covered in 2.5 hours = 1 km

Therefore, speed of robot = $\frac{\textrm{Distance}}{\textrm{TIme}}=\frac{1}{2.5}=0.4\ km/h$

Now, speed is constant.

Now, time taken to cover the length of hallway = 90 s

Speed of the robot = 0.4 km/h

Converting 0.4 km/h to m/s, we multiply by the factor $\frac{5}{18}$ . This gives,

$0.4\times \frac{5}{18}=\frac{1}{9}\ m/s$

Now, distance of the hallway is equal to the product of speed and time. So,

Distance of hallway = Speed $\times$ Time

Distance of hallway = $\frac{1}{9}\times 90=\frac{90}{9}=10\ m$

Therefore, the length of the hallway is 10 m.

5 0

3 years ago