![therealpr1metime45](/avatars/32759.jpg)
therealpr1metime45
17.07.2021 •
Mathematics
PLZZZ HELPPP, IF NOT 100% SURE PLZ DONT ANSWER…BRAINLIEST TO FIRST AND CORRECT ANSWER, THX TO SECOND AND CORRECT ANSWER
Solved
Show answers
More tips
- L Leisure and Entertainment How Many Seasons are There in the TV Show Interns?...
- S Sport When will the Biathlon World Championships 2011 take place in Khanty-Mansiysk? Answers to frequently asked questions...
- H Health and Medicine Trading Semen for Money: Where Can You Sell and Why Would You Want to?...
- F Food and Cooking Homemade French Fries: The Ultimate Guide...
- H Health and Medicine How to Increase Blood Pressure without Medication?...
- S Style and Beauty Choosing a Hair Straightener: Specific Criteria to Consider...
- F Food and Cooking How to Make Polendwitsa at Home?...
- S Science and Technology When do we change our clocks?...
- L Leisure and Entertainment What to Give a Girl on March 8?...
- F Family and Home Is it Worth Knowing the Gender of Your Child Before Birth?...
Answers on questions: Mathematics
- M Mathematics AC =Round your answer to the nearest hundredth....
- B Biology Inheritable genetic variations may result from...
- S Social Studies especially, encourage in children what they perceive to be gender-appropriate behaviors, fostering more independence, competitiveness, and aggression in sons and...
- M Mathematics A student graphed f(x) =x and g(x) = 3/4 f(x) . Which statement describes how the graphs of f and g are related?...
- M Mathematics Find the following expression by multiplying (a+b)^3...
- M Mathematics Given that m 2 = (x² + 4y) , m2 = (27y + 7) , and m23 = 65°, which of these is a possible value of x?...
Ответ:
Explanation:
1/2 = 4/8 after multiplying top and bottom by 8
So the mixed number 7 1/2 is the same as 7 4/8
We can convert to an improper fraction like so
7 4/8
7 + 4/8
7*(8/8) + 4/8
56/8 + 4/8
(56+4)/8
60/8
Notice how dividing 60 over 8 leads to 7 remainder 4. Think of it like having 60 cookies and you want to share them amongst 8 friends. Each friend gets 7 whole cookies (7*8 = 56 taken so far) and then we have 60-56 = 4 left over as the remainder.
Through similar steps, you should find that the mixed number 1 7/8 converts to the improper fraction 15/8.
To rephrase the problem with improper fractions would be to say:
"The electrician needs to buy 60/8 feet of wire. There are 15/8 feet of wire in each spool. How many spools should the electrician buy?"
Let x be the answer to that question.
We multiply the number of spools (x) by the amount of feet of wire per spool (15/8) to get the expression (15/8)x
Set this equal to the target 60/8 and solve for x
(15/8)x = 60/8
15x = 60 multiply both sides by 8 to clear out the fractions
x = 60/15
x = 4
The electrician needs to buy exactly 4 spools
A different approach could have us convert each mixed number into decimal form
7 1/2 = 7 + 1/2 = 7 + 0.5 = 7.5
1 7/8 = 1 + 7/8 = 1 + 0.875 = 1.875
So the electrician needs to buy 7.5 ft total and each spool has 1.875 ft of wire.
Using the same idea as before, we would then have,
1.875x = 7.5
x = (7.5)/(1.875)
x = 4
Ответ:
Step-by-step explanation:
We don't have the hypotenuse so the starting point is to calculate the height via the trigonometric function tangent:
But another option, is to calculate it via its reciprocal trigonometric function, i.e.