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Sunny_sXe [5.5K]
3 years ago
13

1 . Evaluate 3a - 12 divided by a for a =4 2. Evaluate 3x- 2y , if x= 5 and y =3

Mathematics
1 answer:
ziro4ka [17]3 years ago
3 0
This is how I understood the question

Hope I helped!

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To clean a tank, 3/4 cup of disinfectant is needed for every 2 gallons of water. How many cups of disinfectant are needed for 20
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Understand the concept of a unit rate a/b associated with a ratio a:b with b ≠ 0, and use rate language in the context of a ratio relationship. For example, “This recipe has a ratio of 3 cups of flour to 4  cups of sugar, so there is 3/4 cup of flour for each cup of gallons of water.”How many cups of disinfectant are needed for 20 gallons of water so c is 
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4 years ago
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Nancy measured the top of her rectangular table.
fgiga [73]
The correct answer is A) the area is 24 ft^2 and the perimeter is 20 feet

To find the perimeter:
2(6)+2(4)=12+8=20
2(L)+2(W)=perimeter
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7 0
4 years ago
Tyrone went to a basketball game and bought a jersey that was on sale at a 30% discount. He also bought a hat that cost $37.89.
Dmitry [639]

Answer:

Jersey cost (without discount)= $65

Step-by-step explanation:

<u>First, we need to determine how much he spent on the jersey:</u>

Jersey cost (with discount)= 83.39 - 37.89

Jersey cost (with discount)= $45.5

<u>Now, the original cost of the jersey:</u>

Jersey cost (without discount)= discount cost / (1 - discount)

Jersey cost (without discount)= 45.5 / 0.7

Jersey cost (without discount)= $65

7 0
3 years ago
The number of boys to girls in math class is 2:3 If there are 21 girls in Mrs. Vest's math class, how many boys are there? Can w
torisob [31]

Answer:

there are 6 boys in the class

Step-by-step explanation:

5 0
3 years ago
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Need help ASAP <br> i dont understand this someone help
jek_recluse [69]

Answer:

x=2

Step-by-step explanation:

Dilation of 3

6/3=2

6 0
3 years ago
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