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2 years ago

The perimeter of a rectangle is 20 centimetres. The length is 6centimeters.

Mathematics

2 answers:

noname [10]2 years ago

7 0

Answer:

Perimeter =20cm

Length =6

Breath = X

P= 2(l+b)

20 =2(6+x)

20=12+2x

20-12=2x

8=2x

x=8/2

x=4

Step-by-step explanation:

mariarad [96]2 years ago

7 0

Answer:

The Width is 4cm

The Area is 24cm²

Step-by-step explanation:

2(6cm+xcm)=20

12+2x=20

(collect like terms)

2x=20-12

2x=8

(divide both sides by the coefficient of x)

2x=8

2 2

x=4cm is our width

so for the area our formular is L*B=6*4=24cm²

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ach light bulb at Hotel California is either incandescent or fluorescent. At a certain moment, forty percent of the incandescent

Trava [24]

Answer:

10%

Step-by-step explanation:

The computation of the percentage of bulbs that switched on incandescent is as follows;

Let us assume the incandescent be I

And, the fluorescent be F

Now the equation is

0.4I + 0.9F = 0.8 (I+F)

0.41I + 0.9F = 0.8I + 0.8F

So here

0.4I = 0.1F

Now the percentage would be for incandescent in the case of switched on is

= 0.4I ÷ 0.8(I+F) × 100

= 0.1F ÷ 1F

= 10%

6 0

2 years ago

Convert 0.128 to a percent.

nevsk [136]

Answer:

12.8% is the answer

Step-by-step explanation:

0.128 x 100

6 0

2 years ago

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What is the common ratio in the following geometric sequence?

VARVARA [1.3K]

Hey there!

A common ratio is just that number that you multiply or divide to each number that gets you the next in a geometric sequence. In this sequence, we know the numbers are getting bigger and we're multiplying, so we want to know what you're multiplying by the first number to get to the second. We can call this unknown number x. SO if we start with the first number and set up an equation, we get:

3x = 12

Divide both sides by 3

x = 4

Therefore, your common ratio is 4.

To check, you can multiply all the next numbers by 4 to see that it all checks out.

Hope this helps!

3 0

2 years ago

7th grade math help me please :)))

yanalaym [24]

Answer:

$284.99 should go to Mr. Aceves’ class, $174.41 should go to Mrs. Baca’s class, and $140.60 should go to Mr. Canyon’s class.

Step-by-step explanation:

Firstly, to calculate the portions each class should have, we should find the proportion each class takes up.

Hence, let's say A represents Mr. Aceves' class, B represents Mrs. Baca's class, and C represents Mr. Canyon's class.

The total number of box tops collected would be 3760 + 2301 + 1855 = 7916 box tops.

Therefore, the total proportions would be:

A = $\frac{3760}{7916}$

B = $\frac{2301}{7916}$

C = $\frac{1855}{7916}$

Hence, we can finally multiply these proportions with the total prize to find the appropriate division:

Mr. Aceves' class gets $\frac{3760}{7916} \cdot 600 \approx 284.99$ .

Mrs. Baca's class gets $\frac{2301}{7916} \cdot 600 \approx 174.41$ .

And Mr. Canyon's class gets $\frac{1855}{7916} \cdot 600 \approx 140.60$ .

Finally, $284.99 should go to Mr. Aceves’ class, $174.41 should go to Mrs. Baca’s class, and $140.60 should go to Mr. Canyon’s class.

Hope this helped!

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2 years ago

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NNADVOKAT [17]

Answer:lobster

Step-by-step explanation:

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2 years ago

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