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AveGali [126]
3 years ago
13

Your teacher asks the class to evaluate the expression. Your classmate gives an incorrect answer of 256. Evaluate the expression

. Then find the likely error
Mathematics
1 answer:
Leya [2.2K]3 years ago
8 0

Answer:

What expression?

Step-by-step explanation:

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The aspect ratio of a TV screen is the ratio of the width to the height of the image. A regular TV has an aspect ratio of 16: 9.
ki77a [65]

Answer:

Width = 44.45 inches

Height = 25.00 inches

Step-by-step explanation:

(16x)^2 + (9x)^2 = 51^2

256x^2 + 81x^2 = 2601

337x^2 = 2601

x^2 = 7.718

x = 2.778

Width = 44.45 inches

Height = 25.00 inches

I think this is right

7 0
3 years ago
An airplane has a maximum capacity of 118 passengers. The flight attendant has loaded 40 passengers. Which inequality represents
kupik [55]

Answer:

118-40=78

p either is less tham or equal to 78

the answer is c

7 0
3 years ago
A spherical balloon has a circumference of 23 cm. What is the approximate surface area of the balloon to the nearest square cent
Bad White [126]
168cm2
Let r cm be the radius of the balloon, then 
<span>2pi(r)=23=>r=23/(2pi) </span>
<span>The surface area= </span>
<span>4pi(r^2)= </span>
<span>4pi[23/2pi)]^2= </span>
<span>(23^2)/pi=168.386 cm^2 </span>
<span>approximately.</span>
7 0
3 years ago
3.x + y = 11<br> Y = x + 3
PSYCHO15rus [73]

Answer:

x = 2

Step-by-step explanation:

3.x + y = 11     (eq 1)

Y = x + 3       (eq 2)

sub 2 into 1

3x + x + 3 = 11

4x + 3 = 11

4x = 8

x = 2

4 0
3 years ago
By how much does 5 exceed -4?<br>(a) 1<br>(b)-1<br>(c) 9<br>(d) -9​
Elden [556K]

Answer:

C

Step-by-step explanation:

-4+9=5

6 0
3 years ago
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