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topjm [15]
4 years ago
9

A science teacher has 0.4 liter of seawater .She gives each of her 22 students a container and a 5-millimeter spoon. She their a

sks her students to put two spoonfuls of of seawater into their containers.How many milliliter of seawater will be left after all 22 students have filled their containers?
Mathematics
1 answer:
creativ13 [48]4 years ago
7 0
"her students to put two spoonfuls of seawater into their containers"
 We have then:
 (2) * (5) = 10 mililiter
 "he gives each of her 22 students a container"
 Thus,
 (22) * (10) = 220 mililiter
 Therefore, they will remain:
 (0.4 * 1000) - 220 = 400 - 220 = 180 milliliter
 Answer:
 
There will be left 180 mililiter of seawater after all 22 students have filled their containers
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6th grade math help me please !
antiseptic1488 [7]

First we have to figure out how much 3 bags cost using the total cost of $8.25

That means. we would do 8.25/3 and 8.25 divide by 3 equals 2.75.

Now we know that each bag costs approximately $2.75

All we have to do now is multiply 2.75 by 4 to get the cost for the total of 4  bags.

4 times 2.75 is exactly 11 dollars, if might change if theres tax.

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6 0
3 years ago
Elena bowls two games on Saturday. Her score in the second game is 30 more than ¾ of her score the first game. Elena's total sco
grin007 [14]

Answer:

222 = score in 2nd game

Step-by-step explanation:

Let x = score in 1st game

3/4(x) + 30 = score in 2nd game

x + 3/4(x) + 30 = 478         Multiply thru by 4 to eliminate the fraction

4x + 3x + 120 = 1912

7x + 120 = 1912

7x = 1792

x = 256

3/4(x) + 30 = 3/4(256) + 30

= 192 + 30

222 = score in 2nd game

Check:  222 + 256 = 478

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3 years ago
The cost to mail a letter is a base charge of $0.42 plus $0.17 for each ounce. Write an equation that could be used to find how
tresset_1 [31]

Answer:

D) 0.42 + 0.17 x = 0.93

Step-by-step explanation:

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3 years ago
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fiasKO [112]
Hi there!

To solve this problem using substitution, we need to set x equal to a value and substitute it into the other equation.

Since
x - 4y = 5,
x = 5 + 4y

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15 + 12y - 7y = 10
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Now that we know y is -1, we can substitute it back into the equation to find x:

y = -1
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So, your answers are x = 1 and y = -1.

Hope this helps!
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3 years ago
Mark Brainliest and Give PoInts​
nata0808 [166]

Answer: the 2nd and the 5th one

Step-by-step explanation:

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