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4 years ago

Someone plz help me I’ll give brainliest

Mathematics

1 answer:

True [87]4 years ago

3 0

Answer:

f(x)= 2x- 2h

Step-by-step explanation:

so your answer is 2 :)

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Manish drives 265 more miles than janice. manish drives 642 miles how many miles does janice drives

Katen [24]

The answer is 377 because Manish drives 265 more miles than Janice and since Manish drove 642 miles you would subtract 642-265=377 that’s how many miles Janice drove

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3 years ago

A circle has a radius of 6.87 ft. will give brainliest and moderator

Rudiy27

Circumference =2*pi*r
Therefore 3*6.87*3.14
=64.7154ft
is the answer.
by rounding 70ft

7 0

3 years ago

It takes Anastasia 45 minutes to walk 2.5 miles to the park. At this rate, how many minutes should it take her to walk 3 miles?

lapo4ka [179]

Answer: 400

Step-by-step explanation: if you add it a nd subtract ii t will get you right answer.

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3 years ago

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A study of a new medication found that patients who took the medicine have reduced blood pressure, compared to those who did not

muminat

A is the answer blah blah

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3 years ago

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For each function below, determine whether or not the function is injective and whether or not the function is surjective. Be su

olga55 [171]

Answer:

The function is neither injective nor surjective

Step-by-step explanation:

f: P({1,2,3}) -> N is given by f(A) = |A|

where P(S) denotes the power set of a set S and |A| the number of elements of A

$P(\left \{ 1,2,3 \right \})=\left \{ \varnothing ,\left \{ 1 \right \},\left \{ 2 \right \},\left \{ 3 \right \},\left \{ 1,2 \right \},\left \{ 1,3 \right \},\left \{ 2,3 \right \},\left \{ 1,2,3 \right \} \right \}$

$f(\varnothing )=0$

$f(\left \{ 1 \right \})=f(\left \{ 2 \right \})=f(\left \{ 3 \right \})=1$

$f(\left \{ 1,2 \right \})=f(\left \{ 1,3 \right \})=f(\left \{ 2,3 \right \})=2$

$f(\left \{ 1,2,3 \right \})=3$

The function is not injective, for

$P(\left \{ 1 \right \})=P(\left \{ 2 \right \})$

but

$\left \{ 1 \right \}\neq \left \{ 2 \right \}$

The function is not surjective either, because 5 is a natural number which is not the image of any element A under f, i.e., there is no element in A in P({1,2,3}) such that f(A)=5

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4 years ago