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Nat2105 [25]
3 years ago
11

Annette is stacking boxes in her closet. There are 15 boxes in all. If each box weighs 7.5 pounds, how much do the boxes weigh a

ltogether? *
Mathematics
2 answers:
Alona [7]3 years ago
7 0

Answer:

it would be 112.5

Step-by-step explanation:

Phantasy [73]3 years ago
5 0
It should be 112.5 pounds because if there are 15 boxes and each box weighs 7.5 pounds, 15 x 7.5 = 112.5
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Determine the total number of roots of each polynomial function.<br><br> f (x) = (3x4 + 1)2
stiks02 [169]
Answer:

It’s not allowing me to place done the work but the answer is 8 sorry!
6 0
2 years ago
Isabella caries a box up a metal ramp into the back truck. The ramp is 3 meters long and the bottom makes a 32 degree angle with
Bogdan [553]

Answer:

2.5 m

Step-by-step explanation:

Consider the ramp, the ground and the back of the lorry to form a right triangle where the ramp is the hypotenuse and the distance from the back of the lorry is the adjacent side, x

Using the cosine ratio in the right triangle

cos32° = \frac{adjacent}{hypotenuse} = \frac{x}{3}

Multiply both sides by 3

3 × cos32° = x, hence

x ≈2.5 m

6 0
3 years ago
How do I do this fraction with Distributive Property???
Olenka [21]

Answer:

3a - 1

Explanation:

\frac{9a - 3}{3}

Factor out 3

\frac{3(3a - 1)}{3}

Cancel out the common factor 3

3a - 1

5 0
2 years ago
Find each of the following square roots. (Hint: All examples are perfect squares.)
sladkih [1.3K]

Step-by-step explanation:

\sqrt{a}=b\iff b^2=a,\ \text{for}\ a\geq0\ \text{and}\ b\geq0.\\\\a.\ \sqrt{16}=4\ \text{because}\ 4^2=16\\\\b.\ \sqrt{169}=13\ \text{because}\ 13^2=169\\\\c.\ \sqrt{64}=8\ \text{because}\ 8^2=64\\\\d.\ \sqrt{400}=20\ \text{because}\ 20^2=400

4 0
3 years ago
Read 2 more answers
Solve the system by graphing.
shutvik [7]

Answer:

A(-2,5)

x= -2   ,   y=5

Step-by-step explanation:

draw the lines for both equations and that will be by finding any points in the lines:

1. sub any value for x to find y in the equation (y=-x+3) :

  • When x=0 ⇒ y=-0+3, y=3     (the point is: (0,3)
  • When x=1 ⇒ y= -1 +3 , y=2    (the point is: (1,2)
  • When x=2 ⇒ y=-2+3, y=1      (the point is: (2,1)
  • When x=-1 ⇒ y=-(-1)+3, y=4     (the point is: (-1,4)
  • When x=-2 ⇒ y=-(-2)+3, y=5     (the point is: (-2,5)

plot the points in the graph and match them to get the first line for equation(1).

2. sub any value for x to find y in the equation (y=-3x-1) :

  • When x=0 ⇒ y=-3(0)-1, y=-1     (the point is: (0,-1)
  • When x=1 ⇒ y=-3(1)-1, y=-4     (the point is: (1,-4)
  • When x=2 ⇒ y=-3(2)-1, y=-7     (the point is: (2,-7)
  • When x=-1 ⇒ y=-3(-1)-1, y=2     (the point is: (-1,2)
  • When x=-2 ⇒ y=-3(-2)-1, y=5     (the point is: (-2,5)

Now again plot the points in the same graph and match them to get the second line for equation(2).

When you finish you will have two lines drawn in a graph, the solution will be were the two points intercept, and that will be:

A(-2,5)

x= -2   ,   y=5

(note: you can check your answer by subbing the value of x in both equations and you should get the answer 5 as the value of y)

7 0
3 years ago
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