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Kobotan [32]
3 years ago
11

Jade solved the following equation:

Mathematics
1 answer:
sergey [27]3 years ago
4 0

step 1 has incorrect justification

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A sporting goods store sells right-handed and left-handed baseball gloves. In one month, 12 gloves were sold for a total revenue
stepladder [879]

Answer:

9 right-handed gloves and 3 left-handed gloves were sold.

Step-by-step explanation:

Given:  In one month, 12 gloves were sold for a total revenue of \$561.

            right-handed gloves cost \$45 and left-handed gloves cost \$52.

To find: How much of each type of gloves did they sell?

Solution: Let they sell x  right-handed gloves, and y left-handed gloves.

Now, cost of each right-handed gloves =\$45

cost of each left-handed gloves =\$52

Total revenue =\$561

So, we get

45x+52y=561\:\:\:...(i)

Also,  in a month 12 gloves were sold.

So, we get

x+y=12\:\:\:...(ii)

Now, from (ii) we get, x=12-y.

Putting x=12-y in equation (i), we get

45(12-y)+52y=561

\implies 540-45y+52y=561

\implies7y=561-540

\implies7y=21

\implies y=\frac{21}{7}

\implies y=3

Now, putting y=3 in equation (ii), we get

x+3=12

\implies x=12-3

\implies x=9

Hence, 9 right-handed gloves and 3 left-handed gloves were sold.

7 0
3 years ago
What is the area of this figure a triangle and square and four 4 and one 6
Vlada [557]

Answer:

Area = 1/2 x bxl

Step-by-step explanation:

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3 years ago
What is the area of this polygon?
Oksi-84 [34.3K]

all you have to do is add up all the sides and your answer will be 21 cm

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According to the Shannon Diversity Index, which of the five blocks above, with each containing 36 squares, would show the greate
Sladkaya [172]

Answer:

  Block 5

Step-by-step explanation:

The Shannon Diversity Index rewards larger numbers of species and more even distribution of species. On the face of it, Block 5, with its uniform distribution among 4 species, should have the highest index. When we do the calculation, we find this is the case. (see attachments)

___

The SDI is the negative of the total of the products of relative frequency and the natural log of that relative frequency.

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3 years ago
What is 5.43+6.89 using area models
Masja [62]
5.34+6.89= 12 That is what I got
4 0
3 years ago
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