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Ann [662]
3 years ago
11

Question #7

Mathematics
1 answer:
stellarik [79]3 years ago
7 0
The train travels 70 miles per hour
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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
4 years ago
3/4 + 1/2 write answer in mixed number in simplest form
Leni [432]
Explaintion

3/4 + 1/2 = 3/4 + 2/4 = 5/4 = 1 1/4
Answer:

1 1/4

Hope this helps
8 0
3 years ago
Sam is saving money to buy himself a new phone. He currently has $95. He is able to save about $20 a week. Let represent how muc
Sunny_sXe [5.5K]

Answer:

the correct answer is d

Step-by-step explanation:

w(s)=weeks saved and 20s is the gain of 20 dollars every week. and the 95 is the starting amount that sam had

4 0
3 years ago
A closed container has 5.04 ⋅ 1023 atoms of a gas. Each atom of the gas weighs 1.67 ⋅ 10−24 grams.
MatroZZZ [7]

Answer:

The correct option is the last one (0,84 grams, because (5.04 × 1.67) × (10^23 x 10^-24) = 8.4168 x 10^-1))

Step-by-step explanation:

The first step is to think that you have to multiply the number of atoms for the weight of each atom.

When you work with scientific notation, you should solve the operation for numbers and for the ten base. In this case you solve 5.04 x 1.67 and then the product of the ten bases. For this product you have to sum the exponents of the ten base 23 + (-24) = -1.

Summarizing.... 5.04 x 10^23 x 1.67 x 10^-24 = (5.04 x 1.67) x (10^23x10^-24)  ⇒ 5.04 x 10^23 x 1.67 x 10^-24 = 8.4168 x 10^-1

⇒ 5.04 x 10^23 x 1.67 x 10^-24 = 0,84168.

4 0
4 years ago
A group of 8 friends(5girls and 3 boys) plans to watch a movie,but they have only 5 tickets. If they randomly decide who will wa
mrs_skeptik [129]

The chance of 3 girls being chosen is 3/8.

3 0
3 years ago
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