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Valentin [98]
3 years ago
6

To French shop for fresh fruit. Elena buys a watermelon for $7.75 and 5 pounds of cherries Tammy buys a pineapple for $4.15 and

4 pounds of cherries. Use the variable peer to represent the price in dollars per pound of cherries. Right and simplify and expression to represent how much more Alina spent
Mathematics
1 answer:
lys-0071 [83]3 years ago
8 0

Answer: Elena spent $3.6 +x more than Tammy.

Step-by-step explanation:

Let the cost of each cherry be 'x'.

Cost of watermelon for Elena = $7.75

Cost of 5 pounds of cherries = 5x

So, Equation for Elena would be

7.75+5x

Cost of pineapple = $4.15

Number of pounds of cherries = 4

So, Equation for Tammy would be

\$4.15+4x

Now, Elena spent more than Tammy by

(7.75+5x)-(4.15+4x)\\\\=7.75+5x-4.15-4x\\\\=3.6+x

Hence, Elena spent $3.6 +x more than Tammy.

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Find the area of the figure with Heron’s formula
Anna11 [10]

Answer:

735 cm²

Step-by-step explanation:

The figure is a trapezium .The area of the triangle section can be calculated using the Heron's formula.

The other part of the figure will be a square of sides 21 cm by 21 cm

<u>Area of the square section</u>

Area = l²

Area = 21* 21 = 441 cm²

<u>Area of the triangle using Heron's formula</u>

Sides of the triangle are ;

a= 28 cm

c= 35 cm

b = 21 cm -----height of the trapezium

The Heron's formula is given as;

A=\sqrt{s( s-a)(s-b )(s-c )}

where s is half the perimeter of the triangle

Perimeter of the triangle is given as ;

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s= 84/2 = 42 cm

A=\sqrt{42*(42-21 )*(42-35 )*(42-28 )} \\\\A=\sqrt{42*(21 )*(7 )*( 14)} \\\\A=\sqrt{86436} \\\\A=294\\\\

Total area = 294 + 441 = 735 cm²

7 0
3 years ago
What is the value of x?
earnstyle [38]
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7 0
2 years ago
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A rectangular prism has a length of 20 in a width of 2 in and a height of 3 1/4 in the prism is filled with cubes that have edge
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3 years ago
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4 0
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How do I answer this math problem?
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8 0
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