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Hoochie [10]
3 years ago
13

A coin contains 999 grams of nickel and 161616 grams of copper, for a total weight of 252525 grams.

Mathematics
1 answer:
ale4655 [162]3 years ago
4 0
64% because (161616/252525)(100)
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-70y^2+90x^3+100yx^2-63xy<br>factor by grouping
Alexeev081 [22]
The idea of grouping is to get the terms in groups that allow you to factor out from each group something that becomes a factor in itself, leaving two factors behind that are alike. Like this: rearrange those terms so they are in this order:
(-70y^2 - 63xy) + (90x^3 + 100yx^2).  Now out of the first set we are going to factor out a -7y, and out of the second set we are going to factor out a 10x^2. When we do this, this is what we get: -7y(10y + 9x) + 10x^2(9x + 10y). As you can see, what's inside both sets of parenthesis is the same, just in a different order. We can factor that out now, leaving (9x + 10y)(10x^2 - 7y). And that is factored by grouping.
4 0
3 years ago
Can y’all help me please
nikdorinn [45]

Answer:

4a^2b^2(ab^3-4a^3+3b)

This is the answer,the option C

Step-by-step explanation:

8 0
3 years ago
Please help and thank you
ycow [4]

Answer:

D) 130 workers

Step-by-step explanation:

We have the equation, <em>y = 2x + 40</em>, and <em>y, 300</em> (since the y-coordinate represents the # of bottles made), so we can solve for x, <em>the number of workers needed</em>.

Substitute: <em>300 = 2x + 40</em>

Subtract: <em>260 = 2x</em>

Divide: <em>x = 130</em>

Since x = 130 when y = 300, 130 workers are required to make 300 bottles in a day.

4 0
3 years ago
Which number line models the expression -3 + 5 ?
damaskus [11]
I think the answer would be B
3 0
3 years ago
What is the perimeter of the shape seen in the figure?
Tatiana [17]

Answer:

P = 64 cm

Step-by-step explanation:

<C = 150° - 90° = 60°

AB = AC

∠B = ∠C = 60°  } => ΔABC =  EQUILATERAL TRIANGLE =>

=> BC = 10 cm

P = 10cm + 8cm + 6cm + 10cm + 6cm + 6cm + 8cm + 10cm

P = 3x10cm + 2x8cm + 3x6cm

P = 30cm + 16cm + 18cm

P = 64 cm

8 0
3 years ago
Read 2 more answers
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