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NARA [144]
3 years ago
12

Pam scores n goals. Leo scored 5 fewer than Pam. Write an expression in simplest form to represent the total number of goals sco

red.
Mathematics
1 answer:
Naddik [55]3 years ago
3 0

Answer:

h

Step-by-step explanation:

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The length of a shoestring is 21 1/4 centimeters long. What would be the length of 4 of these shoe strings?​
beks73 [17]

Answer:

21.25 multiplied by 4, which is 85.   Final Answer : 85 centimeters long

Step-by-step explanation:

21.25 is the same as 21 1/4.

3 0
3 years ago
Read 2 more answers
Daniel earns a commission of 3% on every home he sells. Recently, Daniel
Leokris [45]

Answer:

The answer in 180000 * 3 ÷ 100 = 5400$

7 0
3 years ago
Give an example of a function f : N → N that is surjective but not injective. You must explain why your example is surjective an
Helen [10]

Answer:

Consider f: N → N defined by f(0)=0 and f(n)=n-1 for all n>0.

Step-by-step explanation:

First we will prove that f is surjective. Let y∈N be any natural number. Define x as the number x=y+1. Then x∈N, and f(x)=x-1=(y+1)-1=y.  We conclude that f is surjective.

However, f is not injective. Take x1=0 and x2=1. Then x1≠x2 but f(x1)=0 and f(x2)=x2-1=1-1=0. We have shown that there are two natural numbers x1,x2 such that x1≠x2 but f(x1)=f(x2), that is, f is not injective.

Note:

If 0∉N in your definition of natural numbers, the same reasoning works with the function f: N → N defined by f(1)=1 and f(n)=n-1 for all n>1. The only difference is that you consider x1=1, x2=2 for the injectivity.

7 0
3 years ago
Pls help me this is do in 10 minutes
aalyn [17]
Each ticket costs $7 and on Friday every ticket is discounted by $2 so the cost of every ticket would be $5 on Friday and 5x9=45 so the cost for 9 tickets on Friday is worth $45
3 0
3 years ago
Martha and sarah leave block p and q towards q and p respectively simultaneously and travel in the same route. After meeting eac
olga_2 [115]

The average speed of Martha and Sarah is 32 km/h.

We need to know about the speed to solve this problem. Speed can be determined as the distance traveled divided by time. It can be written as

v = s / t

where v is speed, s is distance and t is time.

From the question above, we know that:

t sarah = 3 hours

t martha = 5 hours

v sarah = 40 km/h

By using the speed equation, we get the distance

vsarah = s / tsarah

40 = s/3

s = 120 km

Find Martha's speed

vmartha = s / tmartha

vmartha = 120 / 5

vmartha = 24 km/h

Find average speed

v = (vsarah + vmartha)/2

v = (40 + 24) / 2

v = 32 km/h

Hence, the average speed of Martha and Sarah is 32 km/h.

Find more on speed at: brainly.com/question/6504879

#SPJ4

5 0
1 year ago
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