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In-s [12.5K]
3 years ago
9

A store is having a sale on trail mix and jelly beans. For 5 pounds of trail mix and 3 pounds of jelly beans, the total cost is

$22 . For 2 pounds of trail mix and 12 pounds of jelly beans, the total cost is $25 . Find the cost for each pound of trail mix and each pound of jelly beans.
Costforeachpoundoftrailmix:$

Costforeachpoundofjellybeans:$
Mathematics
1 answer:
ivolga24 [154]3 years ago
3 0
X=cost per pound of trail mix
y=cost per pound of jelly beans

5x+3y=22
2x+12y=25

eliminate y's
multiply first equation by -4 and add to 2nd equation

-20x-12y=-88
<u>2x+12y=25 +</u>
-18x=-63

-18x=-63
divide both sides by -18
x=3.5

sub back
5x+3y=22
5(3.5)+3y=22
17.5+3y=22
3y=4.5
y=1.5


each pound of trail mix costs $3.50
each pound of jelly beans costs $1.50
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A scuba diver used the expression below to describe his position in relation to sea level. 2 + (negative 20) + 8 Which statement
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Answer:

Scuba diver started at 2 feet above the sea level, dove down 20 feet, and rose up 8 feet

Step-by-step explanation:

The initial number is 2 which is more than  0 that means the diver did not start at a ground  level but above than that.

The negative 20 denotes that he went down the sea level, to the extent of the number provided in feet.

Further, after that dive the positive number provides the height in feet covered to rise up from the down level of dive.

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4 years ago
a recipe calls for 1 and 3/4 cups of flour. How many cups will you need if you are preparing 3 batches of the recipe?
insens350 [35]

The first thing we need to distinguish is what 1 and 3/4 means.  So, 3/4 = .75, so 1 and 3/4 = 1.75


So, we need 1.75 cups of flour for one batch, since you're making three batches, you need three times as much, so

1.75 * 3

5.25 is the answer, to put it back in to fractions,

5 and 1/4 cups of flour are needed.

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3 years ago
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notsponge [240]
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6 0
3 years ago
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⅔ x 6/7 ÷ 8/14 help please​
ahrayia [7]

Answer:

1

Step-by-step explanation:

\frac{2}{3} *\frac{6}{7} ÷ \frac{8}{14}

= \frac{2}{3} *\frac{6}{7} *\frac{14}{8}

=\frac{2}{3} *\frac{6}{7} *\frac{7}{4}

=\frac{2*6*7}{3*7*4}

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8 0
3 years ago
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HELLO!! I need help with this question, will you help me?
Ber [7]

Answer:

B

Step-by-step explanation:

Charla uses 2 cups of mix per 6 cups of water.

2/6 = 1/3

Rae uses 3 cups of mix per 7 cups of water.

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To compare these fractions, we need to find the common denominator.  In this case, it's 21.

1/3 = 7/21

3/7 = 9/21

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