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Ket [755]
3 years ago
5

Which answer shows 0.05 written in scientific notation?

Mathematics
2 answers:
Advocard [28]3 years ago
8 0

Answer:

B

Step-by-step explanation:

Galina-37 [17]3 years ago
7 0

Answer:I think it’s B

Step-by-step explanation:

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2500 in standard form
xenn [34]

2500 in standard form is 2.5 × 10³

8 0
2 years ago
Read 2 more answers
Last year there were 145 pies baked for the bake sale this year k pies baked using k write a expression for the total number of
allsm [11]

Answer:

The number of pies baked in the two years = ( k + 145) pies

Step-by-step explanation:

Here, we are interested in writing an expression for the total number of pies baked in the two years.

Last year, the number of pies baked = 145

This year the number of pies baked = k

Thus, the total number of pies baked in the two years will be ( k + 145) pies

5 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
Which of the following expressions is equivalent to (x + 5) ^2
Karo-lina-s [1.5K]
(X+5)^2 = x^2 +10x + 25


the expression that is equivalent to

To multiply it we apply FOIL method
Multiply x with x+5 first and then we multiply 5 with x+5






7 0
3 years ago
15/16 divided by 20<br> 7/15 divided by 14
olga2289 [7]

Answer:

The first is 0.046 and the second is 0.033

Step-by-step explanation:

4 0
3 years ago
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