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Likurg_2 [28]
3 years ago
12

1. What is the value of the expression ƒ2 + 8 if ƒ = 7?

Mathematics
1 answer:
r-ruslan [8.4K]3 years ago
6 0

Answer:

f=8/5

Step-by-step explanation:

f*2+=f7

2f+8=f*7

2f+8=7f

2f=7f-8

2f-7f=-8

-5f=-8

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7. Sapna travelled 48 km to meet her parents. She travelled the first 18 km by car and the remaining distance by train. Find the
Anton [14]

The fraction of the journey Sapna traveled by car and train is 3/8 and 5/8 respectively.

We know that fraction is an expression in mathematics used to denote the division of two whole numbers.

Given that the total distance = 48 km.

The distance Sapna traveled by car = 18 km.

So, the fraction is = distance traveled by car/total distance = 18/48 = 3/8

The distance Sapna traveled by train = 48 - 18 km = 30 km.

So, the fraction is = distance traveled by train/total distance = 30/48 = 5/8

Therefore the fraction of the journey Sapna traveled by car and train is 3/8 and 5/8 respectively.

Know more about fractions here -

brainly.com/question/10354322

#SPJ10

6 0
2 years ago
What do you think the answer is, please hurry
vazorg [7]
There is an 18% chance that out of the 3 students she asks, 3 would be in a band. I hope this helped ^^
6 0
3 years ago
Hope made 3 different yo-yo's. She used 1 3/4 meters of string for the first yo-yo, 1 meter of string
Nat2105 [25]

Answer:

See explanation

Step-by-step explanation:

Your question is different from the attachment

Statement 1

1 adult + 5 Children

$4 for adult and total of $16 for both adult and children

Let

Cost of children skating = x

The equation is

4 + 5x = 16

Statement 2:

Cost of making a bike bag= $4

Selling price of the bike bag = $5

Profit = $16

Let x = number of bike bag

Profit = selling price - cost price

16 = 5x - 4x

16 = x(5 - 4)

Also written as

(5 - 4)x = 16

Statement 3:

Initial temperature = 16°C

Change in temperature per hour = 4°C

Final temperature = 5°C

Let

x = number of hours it changes

16 - 4x = 5

Hope made 3 different yo-yos. She used 1 3/4 meters of string for the first yo-yo, 1 meter of string for the second yo-yo, and a total of meters of string 4 1/3

length of first yo-yo = 1 3/4

length of second yo-yo = 1

Length of third yo-yo = x

Total = 4 1/3

Total length = length of first yo-yo + length of second yo-yo + length of third yo-yo

4 1/3 = 1 3/4 + 1 + x

4 1/3 = 2 3/4 + x

4 1/3 - 2 3/4 = x

13/3 - 11/4 = x

(52-33) / 12 = x

19/12 = x

x = 1 7/12

5 0
3 years ago
NEED HELP ASAP!! <br> and please explain if you can.
Shtirlitz [24]

Answer:

HI

Step-by-step explanation:

8 0
3 years ago
Titiknya 10 dan 8<br> ∫x-8)( x-9) (x-10) dx
Sav [38]

\displaystyle\int_8^{10}(x-8)(x-9)(x-10)\,\mathrm dx

Consider the substitution,

y=x-9\implies\begin{cases}y-1=x-10\\y+1=x-8\\\mathrm dy=\mathrm dx\end{cases}

so that the integral is equivalent to

\displaystyle\int_{-1}^1y(y+1)(y-1)\,\mathrm dy

Notice that

f(y)=y(y+1)(y-1)\implies f(-y)=-y(-y+1)(-y-1)=-y(y-1)(y+1)=-f(y)

which means f(y) is odd, so

\implies\displaystyle\int_{-1}^1f(y)\,\mathrm dy=0

Perhaps more work than necessary, but it does make it easier to see that the original integrand exhibits some symmetry about x=9.

6 0
3 years ago
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