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4 years ago

!LOOK AT THE PICTURE!Simplify 15.6 divided by negative 3

Mathematics

1 answer:

muminat4 years ago

3 0

Answer:

c -5.2 tell me if you need the explanation

Step-by-step explanation:

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A baseball bat and 8 baseballs cost $163.25. The bat costs $106.45. What is the cost of one baseball?

Elan Coil [88]

The answer is $7.10 per baseball

5 0

3 years ago

Read 2 more answers

1. Divide 6x^4 + 2x^3 – 6x^2 – 14x – 1 by 3x + 1 by using synthetic division or long division. Show all

iris [78.8K]

      2x^3 - 2x - 4

3x + 1 6x^4 + 2x^3 - 6x^2 - 14x - 1
      6x^4 + 2x^3

       -6x^2 - 14x - 1
   -6x^2 - 2x

   -12x - 1
   -12x - 4

   3

3x + 1 is not a factor of the dividend because, dividing the dividend with 3x + 1 gives a remainder.

5 0

4 years ago

Solve 6x+57=2x+315 . A. x=−911 B. x=911 C. x=119 D. x=−119

liubo4ka [24]

Explanation:

Remember: we have to isolate the variable x, so that means we have to get x by itself.

Step 1:

Let’s look at our equation:

$6x+57=2x+315$

Let’s subtract 2x from both sides of the equation, since our goal is to isolate the variable. You could also subtract 6x from both sides, but you would end up with a negative number, and I find it easier to deal with positive numbers.

$6x(-2x)+57=2x(-2x)+315\\4x+57=315$

Step 2:

Now, let’s subtract 57 from both sides of our equation.

$4x+57(-57)=315(-57)\\4x=258$

Step 3:

Since we have to isolate x, let’s divide both sides of the equation by 4.

$4x/4=x\\258/4=64.5$

Our final answer: x = 64.5

None of your options is the correct answer. Notify your teacher, tutor, etc. since there none of the options are correct.

4 0

3 years ago

A projectile is fired from ground level with an initial speed of 550 m/sec and an angle of elevation of 30 degrees. Use that the

Nana76 [90]

Answer:

x (max) = 26760 m

y (max) = 3859 meters

V = 549.5 m/sec

Step-by-step explanation:

Equations to describe the projectile shot movement are:

a(x) = 0 V(x) = V(₀) *cos α x = V(₀) *cos α * t

a(y) = -g V(y) = V(₀) * sin α - g*t y = V(₀) * sin α *t - (1/2)*g*t²

a ) What is the range of the projectile. α = 30°

then sin 30° = 1/2 cos 30° = √3 /2 and tan 30° = 1/√3

x maximum occurs when in the equation of trajectory we make y = 0

Then

y = x*tan α - g*x / 2*V(₀)²*cos² α

x*tan α = g*x / 2* V(₀)²*cos² α

By subtitution

1/√3 = 9.8* x(max) / 2* (550)²*0.75

(1/√3) * 453750 / 9.8 = x (max)

x (max) = 453750 / 16.95 meters

x (max) = 26760 m

The maximum height is when V(y) = 0

We compute t in that condition

V(y) = 0 = V(₀) * sin α - g*t

t = V(₀) * sin α / g ⇒ t = 550* (1/2) / 9.8

t = 28.06 sec

Then h (max) = y(max) = V(₀) sin α * t - 1/2 g* t²

y (max) = 550* (1/2)*28.06 - (1/2)* 9.8 * (28.06)²

y (max) = 7717 - 3858

y (max) = 3859 meters

What is the speed when the projectile hits the ground

V = V(x) + V (y) and t = 2* 28.06 t = 56.12 sec

mod V =√ V(x)² + V(y)²

V(x) = V(₀) cos α = 550 * √3/2

V(x) = 475.5 m/sec V(x)² = 226338 m²/sec²

V(y) = 550*1/2 - 9.8* 56.12 ⇒ V(y) = 275 - 549.98

V(y) = - 274.98 V(y) ² =

V = √ 226338 + 75614 ⇒ V = 549.5 m/sec

7 0

3 years ago

Combine like terms.

Alexxx [7]

The answer is B

Reason Being is because you would combine (4x) and (-10x) which would give you -6x.

After combining those you would combine (7) and (15) which would give you 22.

Therefore, your answer is (22-6x)

3 0

4 years ago