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3 years ago

Bob got 84% of her test questions on her test correct. If there were 25 questions on the test how many did he get correct

Mathematics

2 answers:

Karolina [17]3 years ago

4 0

Answer:

Step-by-step explanation:

21^4=84

seropon [69]3 years ago

3 0

Answer:

21 questions

Step-by-step explanation:

84%=.84

.84*25=21 questions

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3 years ago

A store is having a sale on jelly beans and almonds. For 5 pounds of jelly beans and 3 pounds of almonds, the total cost is $13.

azamat

Answer:

The cost for each pound of jelly beans and each pound of almonds is $1.25 and $2.25 respectively.

Step-by-step explanation:

Let the cost for each pound of jelly beans and each pound of almonds be x and y respectively.

ATQ,

For 5 pounds of jelly beans and 3 pounds of almonds, the total cost is $13.

5x+3y = 13 ...(1)

For 2 pounds of jelly beans and 6 pounds of almonds, the total cost is $16.

2x+6y = 16

x + 3y = 8 ....(2)

Subtract equation (2) from (1)

5x+3y-(x + 3y)= 13-8

4x = 5

x = 5/4

x = $1.25

Put the value of x in equation (2) as follows :

1.25 + 3y = 8

3y = 8-1.25

y =$2.25

Hence, the cost for each pound of jelly beans and each pound of almonds is $1.25 and $2.25 respectively.

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Surface area of sphare

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Cuboid = 2h(l + b)
Cube = 6s²
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Cone = πrl
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