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Alja [10]
3 years ago
5

Will give brainliest to 1st

Mathematics
1 answer:
Alecsey [184]3 years ago
6 0

Answer:

x=10.5

Step-by-step explanation:

5(x+3)=(6)(12)-[.5(6)(12-x)]

5x+15=72-36+3x

reduce

2x=21

x=10.5

check

5(10.5+3)=(6)(12)-[.5(6)(12-10.5)]

52.5+3=72-4.5

reduce

67.5=67.5

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2x + 72xx + 8x
valentinak56 [21]

The area of the shaded region is 3x^2 + 6x

<h3>How to determine the area of the shaded region?</h3>

The given parameters are:

  • Top side of the shaded rectangle = 2x + 7.
  • Left side of the shaded rectangle = 2x.
  • Top side of the unshaded rectangle = x + 8.
  • Left side of the unshaded rectangle = x.

The area of the shaded region is calculated as:

Shaded region area = (Top side of the shaded rectangle * Left side of the shaded rectangle) - (Top side of the unshaded rectangle * Left side of the unshaded rectangle)

Substitute the known values in the above equation

Shaded region area = (2x + 7) * (2x) - (x + 8) * (x)

Evaluate the products

Shaded region area = (4x^2 + 14x) - (x^2 + 8x)

Open the bracket

Shaded region area = 4x^2 + 14x - x^2 - 8x

Collect the like terms

Shaded region area = 4x^2 - x^2 + 14x  - 8x

Evaluate the like terms

Shaded region area = 3x^2 + 6x

Hence, the area of the shaded region is 3x^2 + 6x

Read more about areas at:

brainly.com/question/25292087

#SPJ1

7 0
2 years ago
Help please hurry......
user100 [1]

All multiples of 15 between 0 and 300,inclusive

How?

\\ \sf\longmapsto f(x)=15x

\\ \sf\longmapsto f(0)=15(0)=0

\\ \sf\longmapsto f(20)=15(20)=300

Hence.

\\ \sf\longmapsto 0\leqslant R_f\leqslant 300

8 0
3 years ago
Read 2 more answers
To help answer this question, Diego wrote the equation 3/4 divided by 2/5. Explain why this equation does not represent the situ
marissa [1.9K]
<h3>Number of minutes in 3/4 of an hour is : </h3>

<h3>n = 3/4 × 60 = 45 minutes. </h3>

<h3>Now, If it continues to rain at that rate for 15 more minutes : </h3><h3> </h3><h3>So, time taken = 45 + 15 min = 1 hour. </h3><h3> </h3><h3>Let, rain gauge is filled x fraction in 1 hour. </h3>

<h3>So, </h3>

<h3>Hence, this is the required solution.</h3>
4 0
3 years ago
A mammal's surface area can be calculated by using the equation S(m) = km where s(m) is the surface area in square centimeters,
Virty [35]

Answer: 706 grams

Step-by-step explanation:

s(m) = km

So 6000 = 8.5m

Divide both sides by 8.5 to isolate m

6000/8.5 = 8.5m/8.5

705.88 = m

m = 706 (rounding up)

3 0
3 years ago
Ralph leaves for school at 7:42 every morning. If he gets to school at 8:03, how long does it take him to drive to school? 39 mi
dybincka [34]

Answer:

21 minutes

Step-by-step explanation:

When adding time every time you hit 60 minutes you are at the next hour so if you add 20 you end up at 8:02. Add another minute and now you are at 8:03.

4 0
3 years ago
Read 2 more answers
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