it would be 70/100 then it would go down to 7/10 so 1/10 of 70kg would be 7kg because you change 70 you make it a decimal witch is .70 or .7 now make that into a fraction and it would be 70/100 or 7/10 then you take your 7 because its 1/10 of 70. Or you could do it a whole lot easier way and just divide 70 by 10 and get 7. There you have it your answer is 7.
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If 120g of copper are needed for a certain piece of brass, then the weight of the zinc that will be needed for the same piece is 80 grams.
A ratio expresses the number of times one number contains another. For example, if a dish of fruit contains eight oranges and six lemons, the orange-to-lemon ratio is eight to six. Similarly, the lemon to orange ratio is 6:8, while the orange to total fruit ratio is 8:14.
Given that Brass is an alloy made from copper and zinc in the ratio 3:2, based on weight. Therefore, the ratio of the metals can be written as,
Copper / Zinc = 3/2
Now, as the weight of the copper is 120grams. Therefore, the ratio can be written as,
Copper / zinc = 3/2
120 grams / zinc = 3/2
zinc = (120 grams × 2) / 3
zinc = 80 grams
Hence, If 120g of copper are needed for a certain piece of brass, then the weight of the zinc that will be needed for the same piece is 80 grams.
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The simplest form of given expression is .
Expressions in math are mathematical statements that have a minimum of two terms containing numbers or variables, or both, connected by an operator in between.
Given expression
=
Combine like terms
=
=
The simplest form of given expression is .
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Answer:
Step-by-step explanation:
4 less than 3 times the width X
Answer:
Step-by-step explanation:
Im not answering the question but omg ur and army my bias is suga and im also in middle school
I don't understand how to fill in the blanks.
I believe the answer you are looking for is:
Increasing 20 to 40 is the same as increasing 20 by 20 (or itself), so it is a 100% increase. Decreasing 40 to 20 is the same as decreasing 40 by 1/2 or by 20. So it is a 50% increase.
Basically, when going from 20 to 40, the number is being doubled, and when youre going from 40 to 20 you are cutting the number in half.
Answer:
The first blank is 20 and the second is actually 40
Step-by-step explanation:
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