3 years ago

Copper has an atomic number of 29.

Mathematics

1 answer:

Harlamova29_29 [7]3 years ago

4 0

Answer: The Answer is 58. Hope you pass

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Two numbers differ by 30. If 15 is added to the smaller, the result exceeds half the larger number by 7 1/2. What are the number

katen-ka-za [31]

6*5=30
10*3=30
15+15=30

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3 years ago

A rectangular piece of cardboard is 15 inches longer than it is wide. A 5-inch square is cut from each corner, and the remaining

HACTEHA [7]

Let x be the width of the cardboard, then the length is x+15. If 5 unches square is cut from each corner, then the new length is x+15-5·2=x+5 and the new width is x-5·2=x-10. The height of the formed box is 5 in. Now you can find the box volume:

$V=\text{ width }\cdot \text{ length }\cdot \text{ height },\\ V=(x-10)\cdot (x+5)\cdot 5,\\ V=5(x^2-5x-50)$ .

If the volume of the box is 1,250 cubic inches, then

$5(x^2-5x-50)=1250,\\ x^2-5x-50=250,\\ x^2-5x-300=0,\\ D=(-5)^2-4\cdot (-300)=25+1200=1225,\\ \sqrt{D} =35,\\ x_{1,2}=\dfrac{5\pm 35}{2} =20,-15$ .

The length of the box is x+5=20+5=25 in. (the negative x is extra, because the length couldn't be negative).

Answer: the length of the box is 25 inches.

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3 years ago

5x + 2y = 6 what is the solution?

Arturiano [62]

The answer is x=-2/5y+6/5

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Suppose you went to a carnival. the price in was $6, and you paid $0.50 to get on each ride. if you went to the carnival and rod

DochEvi [55]

.5(11)+6= $11.50 Multiply the price of each ride by how many rides you went on and add the price of the carnival ticket itself.

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Linear Equation in two variables. It is a _________ equation with _______ values. Its graph is a _______.

Arisa [49]

Answer:

linear,2,line,mx+b,gradient,y-intercept,gradient

Step-by-step explanation:

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