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3 years ago

9

Danny and his classmates placed colored blocks on a scale during a science lab. The red block weighed 1.5 pounds and the yellow

block weighed 1.056 pounds. How much more did the red block weigh than the yellow block?

1 answer:

xenn [34]3 years ago

5 0

Answer: 0.444

Step-by-step explanation:

1.5 - 1.056 = 0.444

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3m+n=10<br>5m-2n=2<br>what is the answer for this one

svlad2 [7]

Answer:

m = 2

n = 4

Step-by-step explanation:

Ok so to solve this, you want to get it so there is only one variable and then solve that equation. To do this, you can start by doing:

3m + n = 10

multiply both sides by 2

6m + 2n = 20

now, in both of your equations you have 2n so you can add the two equations:

6m + 2n = 20

+ 5m - 2n = 2

11m = 22

divide both sides by 11

m = 2.

Now, plug this value into the original equation, 3m + n = 10:

3 * 2 + n = 10

6 + n = 10

subtract 6 from both sides

n = 4

6 0

2 years ago

PLZ HELP !! Which of the points (s, t) is not one of the vertices of the shaded region of the

stira [4]

Answer:

A(0,10)

Step-by-step explanation:

Given the 4 inequalities:

s ≥ 12 - 0.5t (1)

s ≥ 10 -t (2)

s ≤ 20-t (3)

s ≥ 0

t ≥ 0

Let analyse all 4 possible answer:

A(0, 10)

Let substitute this point into (1) we have: 10 ≥ 12 -0.5*0 Wrong

We do not choose A

B (0, 20)

Let substitute this point into (1) we have: 20 ≥ 12 -0.5*0 True

Let substitute this point into (2) we have: 20 ≥ 10 - 0 True

Let substitute this point into (3) we have: 20 ≤ 20 - 0 True

We choose B as the vertex

C. (4, 16)

Let substitute this point into (1) we have: 16 ≥ 12 -0.5*4 True

Let substitute this point into (2) we have: 16 ≥ 10 - 4 True

Let substitute this point into (3) we have: 16 ≤ 20 - 4 True

We choose C as the vertex

D. (16,4)

Let substitute this point into (1) we have: 4 ≥ 12 -0.5*16 True

Let substitute this point into (2) we have: 4 ≥ 10 - 16 True

Let substitute this point into (3) we have: 4 ≤ 20 - 16 True

We choose B as the vertex

Hence, the point A(0,10) is not one of the vertices of the shaded region of the set of inequalities.

3 0

3 years ago

I am arranging my dog's collars on a 6 hanger coat rack on the wall. If she has six collars, how many ways can I arrange the col

Irina18 [472]

Answer:

720 ways to arrange

Step-by-step explanation:

Use the factorial of 6 to find this solution. Namely, 6!

This means 6*5*4*3*2*1 which equals 720

It seems like a huge number, right? But think of it like this: For the first option, you have 6 collars. After you fill the first spot with one of the 6, you have 5 left that will fill the second spot. After the first 2 spots are filled and you used 2 of the 6 collars, there are 4 possibilities that can fill the next spot, etc.

7 0

3 years ago

Read 2 more answers

3+x=x^2+3x Rewrite the equation by completing the square. What are the solutions to the equation?

Luda [366]

Answer:

hope this helps

Step-by-step explanation:

3+x=x²+3x

Simply the equations.

= x+3=x²+3x

Subtract x²+3x from both sides.

x+3−(x²+3x)=x2+3x−(x²+3x)

−x2−2x+3=0

Factor left side of equation.

(−x+1)(x+3)=0

−x+1=0 or x+3=0

Answer:

x=1 or x=−3

8 0

2 years ago

Find the value of p for which 81p ÷ 9p = 94 ?

Radda [10]

Answer:

p = 10.44

Step-by-step explanation:

There is no solution. If the question was 81p / 9 = 94, it could be done.

The way it is written the ps cancel out and you get 9 = 94 which is impossible.

But let's assume you meant

81p / 9 = 94

Then you get 9p = 94 Divide both sides by 9

81p/9 = 94

9p = 94 Divide both sides by 9

9p/9 = 94/9

p = 10.44

5 0

2 years ago