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Vikentia [17]
3 years ago
15

On a map, Nancy uses a ruler to find the approximate distance between her town and California. The distance on the map is 35 cen

timeters. Nancy knows the distance between her town and California is about 1400 kilometers. What is the scale of the map?
A. 1 cm : 40 km
B. 1 cm : 45 km
C. 1 cm : 208 km
D. 1 cm : 280 km
Mathematics
2 answers:
Whitepunk [10]3 years ago
3 0
It is A because 1400/35 is 40
barxatty [35]3 years ago
3 0

Answer:

A

Step-by-step explanation:

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6 0
2 years ago
1011+111 in binary form
Ann [662]

Answer:

10010

Step-by-step explanation:

1011=1(2)^3+0(2)^2+1(2)^1+1(2)^0

111=1(2)^2+1(2)^1+1(2)^0

So 1011+111 gives us:

1(2)^3+0(2)^2+1(2)^1+1(2)^0

+

1(2)^2+1(2)^1+1(2)^0

-----------------------------------------------------

Combine like terms:

1(2)^3+(0+1)(2)^2+(1+1)(2)^1+(1+1)(2)^0

1(2)^3+1(2)^2+(2)(2)^1+(2)(2)^0

We aren't allowed to have a coefficient bigger than 1.

I'm going to replace 2^0 with 1 and 2 with (2)^1:

1(2)^3+1(2)^2+(2)^2+(2)^1(1)

I want a 2^0 number:

1(2)^3+1(2)^2+1(2)^2+1(2)^1+0(2)^0

Combine like terms:

1(2)^3+2(2)^2+1(2)^1+0(2)^0

2(2)^2=2^3:

1(2)^3+2^3+1(2)^1+0(2)^0

Combine like terms:

2(2)^3+1(2)^1+0(2)^0

We can rewrite the first term by law of exponents:

2^4+1(2)^1+0(2)^0

1(2)^4+1(2)^1+0(2)^0

So the binary form is:

10010

Maybe you like this way more:

Keep in mind 1+1=10 and that 1+1+1=11:

Setup:

      1     0     1      1

+            1      1      1

------------------------------

     (1)    (1)    (1)

      1     0     1      1

+            1      1      1

------------------------------

     1 0    0     1       0

I had to do some carry over with my 1+1=10 and 1+1+1=11.

8 0
3 years ago
Choose the phrase that best describes the matrix
lions [1.4K]

Answer:

coefficent matrix

Step-by-step explanation:

P. 366

"If the column of constant terms is not included, the matrix reduces to that of the coefficent matrix of the system"

-1 -3 -1

9 -9 -1

-1 -3 4

7 0
3 years ago
Read 2 more answers
I need help with this math problem!
Lyrx [107]

Answer:

12?

Step-by-step explanation:

i might be wrong, but from what it looks like, it shows 3 sections and one is labeled 4.

8 0
3 years ago
Which statement best explains whether y = 3x + 5 is a linear function or a nonlinear function?
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The answer is letter 4 you can prove this replacing each pair in the function y=3x+5, and it is a straight line because the greatest exponent of this function is 1.
5 0
2 years ago
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