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algol13
3 years ago
12

a postcard has an area of 24 square inches. two enlargements of the postcard have areas of 54 square inches and 96 square inches

. in each postcard the length is 1 and 1/2 times the width. what could be the dimensions of the postcard or the enlargements.
Mathematics
2 answers:
LekaFEV [45]3 years ago
6 0
So,

The length is always 1.5 times the width.

l = 1.5w

lw = 24
lw = 54
lw = 96

Or, we could put it this way:
1.5w(w) = 24
1.5w(w) = 54
1.5w(w) = 96

So,
1.5w^2=24
1.5w^2=54
1.5w^2=96

Dividing both sides by 1.5, we get:
w^2 = 16
w^2 = 36
w^2 = 64

And solving for the only logical dimension, we get:
w = 4
w = 6
w = 8

And their corresponding lengths:
l = 1.5(4) = 6
l = 1.5(6) = 9
l = 1.5(8) = 12

So a few lengths could be:
(l,w)
(6,4)
(9,6)
(12,8)

Of course, there are infinite solutions.
lorasvet [3.4K]3 years ago
5 0
4 and 6 is the original. The 54 inch one is 6 and 9. The 96 inch one is 8 and 12
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Debora [2.8K]
This is exactly like the one with the 'n's that you posted yesterday.
I guess you didn't get enough help on that one to understand it.

<span><u>7k/8 - 3/4 - 5k/16 = 3/8</u>

3/4 is the same as 6/8.
Add it to each side of the equation:

7k/8         - 5k/16 = 9/8

Multiply each side by 16 :

14k - 5k = 18

Add up the 'k's on the left side:

9k = 18

From this point, you can proceed directly to the numerical value of 'k'
if you need it.<u />

In your question, you said you need help, and I showed you how to
strip the problem down so that the only thing left is ' k = something '.
Giving you the answer is no help.  Nobody actually needs the answer.
</span>


8 0
3 years ago
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Congruent Triangles will mark brainiest with thorough explanation.
klasskru [66]

ASA

Angle-Side-Angle

AAS is the same but the order in different.

SAS is a no because there are no two S.

Can't determine bah! You can determine.

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4 0
2 years ago
Read 2 more answers
Help Pls! I need this fast!
lesya [120]

Answer: 36

Step-by-step explanation:

\overline{AB} \cong \overline{BC} (Triangle ABC is isosceles)

m\angle CAB=m\angle CBA=30^{\circ} (base angles of an isosceles triangle are congruent)

\angle MCB=90^{\circ} (In triangle CMB, angles in a triangle add to 180 degrees)

\angle ACM=30^{\circ} (triangle sum theorem)

MB=24 (30-60-90 triangle CMB)

AB=12 (sides opposite congruent angles in a triangle are congruent)

AB=36 (segment addition postulate)

3 0
2 years ago
Sarah brought her City car in for repairs and maintenance over the first three years she owned it she replace the brake pads in
Veseljchak [2.6K]

Answer: Average per year for the repairs and maintenance is $273.66

Step-by-step explanation:

She replace the brake pads in the third year for $98 and the preventive maintenance plan cost $723 

what did he average per year for repairs and maintenance?

The total cost of repairs and maintenance = 98 + 723 = 821

repairs and maintenance over the first three years 

Divide the answer by 3

821/ 3 = 273.67 dollars per year

3 0
3 years ago
Solve:<br> 2(x+2)-5=3(x-1)
sergejj [24]
Answer:
x = 2

Explanation:
2(x+2)-5=3(x-1)
1) Use distributive property (multiply the 2 by x+2 and the 3 by x-1)
2x+4-5=3x-3
2) Combine like terms
2x-1=3x-3
3) Subtract 2x on both sides
-1=x-3
4) Add 3 on both sides
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hope this helps!
7 0
2 years ago
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