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Elena-2011 [213]
2 years ago
10

5x+7 but the given x=6

Mathematics
2 answers:
lions [1.4K]2 years ago
8 0

Answer:

37

Step-by-step explanation:

5 x 6 = 30

30+7=37

Fofino [41]2 years ago
3 0

Answer:

37

Step-by-step explanation:

5x + 7

x = 6

All you need to do is substitute the "x" with "6" since that has been given....

5(6) + 7

30 + 7

37

Hope this helped!

Have a supercalifragilisticexpialidocious day!

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Answer:

D

Step-by-step explanation:

You have the correct answer.

6 0
2 years ago
The sides of a rectangular field are
Lyrx [107]

Answer:

Step-by-step explanation

Perimeter of a rectangle =2(length +breadth)

90m = 2{(36x+2) + (2(x+2)}

Opening the inner brackets,

90 = 2{36x +2+2x +4}

90 = 2{38x +6}

Open the brackets

90 = 76x + 12

Collect like terms

90 - 12 = 76x

78=76x

Divide 78 by the coefficient of x

x = 78÷76

x =1.03m (2d.p)

Substitute the value of x into the expressions for the two sides of the rectangle

36x+2 =(36×1.03) +2= 37.08+2=39.08m

2(x+2)= 2(1.03+2)= 2(3.03) =2×3.03= 6.06m

The approximate values of the two sides of d rectangular field are 39.08m and 6.06m

7 0
3 years ago
Can someone please help me, I'm stuck
mylen [45]
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4 0
2 years ago
A show owner offers a 20% discount off the regular price of a mirror. The amount of the discount is $3 what is the regular price
hram777 [196]

Answer:

$15

Step-by-step explanation:

The original price of the mirror is unknown, so let's call it x.

The discount on the original price is a 20% discount, so it is 20% of x, or 0.2x.

We are told the discount is $3, so 0.2x = 3. Now we solve the equation for x.

0.2x = 3

Divide both sides by 0.2.

x = 3/0.2

x = 15

The regular price is $15.

5 0
3 years ago
A firm produces a commodity and receives $100 for each unit sold. The cost of producing and selling x units is 20x 0.25x 2 dolla
vekshin1

Answer:

160 units and $6400

Step-by-step explanation:

We have that the cost per x unit is: 20 * x + 0.25 * x ^ 2

the price per unit is 100, therefore revenue for each unit would be 100 * x

However:

profit = revenue - cost

p (x) = 100 * x - 20 * x - 0.25 * x ^ 2

for the maximum value profit we must derive and equal 0:

p '(x) = 100 - 20 - 0.5 * x

0 = 80 - 0.5 * x

0.5 * x = 80

x = 80 / 0.5

x = 160

Therefore, the maximum profit occurs when there are 160 units, replacing we have:

p (x) = 100 * 160 - 20 * 160 - 0.25 * 160 ^ 2

p (x) = 6400

that is to say that the $ 6400 is the maximum profit.

4 0
3 years ago
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