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statuscvo [17]
3 years ago
13

A 8.5 B 8.1 C 12.5 D 12.9

Mathematics
1 answer:
elena55 [62]3 years ago
4 0
Cosine again. Yay.

Put 36 into a fancy calculator with one of those cos() things. You get about 0.81. 

So that's the ratio between x and 10.

So basically x/10 = 0.81, or 0.81 * 10 = x.

8.1 = x
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Sean's grandfather is three years older than four times Sean's age. If Sean's grandfather is 63, which equation can be used to f
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60 divided by 4.
EXPLANATION:
If his grandfathers age is 3 more than whatever 4 times seans age is. we can do 63 - 3. which is 60.
Then you fond seans age. 60 divided by 4 is the equation to find seans age.
sry its a bad explanation but I hope the answer helps!
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2 years ago
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How many integers are there that consist of four digits (from 1000 to 9999) where the first digit is a 5 or an 8 and the third d
Ostrovityanka [42]

Answer:

1600 integers

Step-by-step explanation:

Since we have a four digit number, there are four digit placements.

For the first digit, since there can either be a 5 or an 8, we have the arrangement as ²P₁ = 2 ways.

For the second digit, we have ten numbers to choose from, so we have ¹⁰P₁ = 10.

For the third digit, since it neither be a 5 or an 8, we have two less digit from the total of ten digits which is 10 - 2 = 8. So, the number of ways of arranging that is ⁸P₁ = 8.

For the last digit, we have ten numbers to choose from, so we have ¹⁰P₁ = 10.

So, the number of integers that can be formed are 2 × 10 × 8 × 10 = 20 × 80 = 1600 integers

5 0
3 years ago
Write an expression equivalent to 6x+3y-4x+2
ch4aika [34]

Answer:

10x+3y+2

Step-by-step explanation:

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2 years ago
Ella has 10 more CDs than her friend Krystal has. Iris has 3 times as many CDs as Ella has. Which of the following can be used t
pav-90 [236]

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Step-by-step explanation:

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2 years ago
Car travels and average speed of 48 miles per hour how long does it take to travel 180 miles?
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5 0
3 years ago
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