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Troyanec [42]
3 years ago
13

Ms. Malloy is painting one side of a rectangular barn door.

Mathematics
1 answer:
umka21 [38]3 years ago
7 0

Answer: 3,200in^2

Step-by-step explanation: multiply 80 and 40

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George needs blueberries for a certain recipe calls for 4/5 cup blueberries.However, George wants to make a recipe that is 3 1/2
lesya [120]

Answer:

Step-by-step explanation:

4/5 × 3 1/2

= 4/5 × 7/2

= 28/10

= 2 8/10

=2 4/5 cups of blueberries

6 0
3 years ago
A restaurant operator in Accra has found out that during the partial lockdown, if she sells a plate of her food for GH¢20 each,
Lilit [14]

Answer:

Step-by-step explanation:

First, note this parameters from the question.

We let x = number of $5 increases and number of 10 decreases in plates sold.

Our Revenue equation is:

R(x) = (300-10x)(10+5x)

We expand the above equation into a quadratic equation by multiplying each bracket:

R(x) = 3000 + 1500x - 3000x - 1500x^2

R(x) = -1500x^2 - 1500x + 3000 (collect like terms)

Next we simplify, by dividing through by -1500

= 1500x^2/1500 - 1500x/1500 + 3000/1500

= X^2 - x + 2

X^2 - x + 2 = 0

Next, we find the axis of symmetry using the formula x = -b/(2*a) where b = 1, a = 1

X = - (-1)/2*1

X = 1/2

Number of $5 increases = $5x1/2 = $2.5

=$2.5 + $20 = $22.5 ticket price gives max revenue.

7 0
3 years ago
2. Maria has a garden that is 6 feet by 4 feet. What is the perimeter of Maria's garden?
Anton [14]

Answer:

  = 20 ft

Step-by-step explanation:

The perimeter is found by

P = 2(l+w)

  = 2(6+4)

   =2(10)

  = 20 ft

8 0
3 years ago
A drawing has a scale of 1:40.
uranmaximum [27]

Answer:

300,000 cm^{2} is bigger

Step-by-step explanation:

10 x 40 = 400

18 x 40 = 720

400 x 720 = 288,000 cm^{2} (area of the bedroom)

300,000 cm^{2} is bigger by 12,000 cm^{2} (so the kitchen is bigger)

4 0
3 years ago
Read 2 more answers
Keith had 694 green,yellow and blue marbles.He had 3 times as many blue marbles as yellow marbles. there were 90fewer green than
nikdorinn [45]

Answer:

336 blue marbles

Step-by-step explanation:

694= x+3x+3x-90

694=7x-90

784=7x

x=112

3x=336

3x-90=246

6 0
3 years ago
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