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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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Answer: $4 per hour

Step-by-step explanation:

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nasty-shy [4]

Answer:

The answer should be B

8 0
3 years ago
PLEASE HELP ME!
algol13

Step-by-step explanation:

1.\sum_{i=1}^{5}3i

The simplest method is "brute force".  Calculate each term and add them up.

∑ = 3(1) + 3(2) + 3(3) + 3(4) + 3(5)

∑ = 3 + 6 + 9 + 12 + 15

∑ = 45

2.\sum_{k=1}^{4}(2k)^{2}

∑ = (2×1)² + (2×2)² + (2×3)² + (2×4)²

∑ = 4 + 16 + 36 + 64

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3.\sum_{k=3}^{6}(2k-10)

∑ = (2×3−10) + (2×4−10) + (2×5−10) + (2×6−10)

∑ = -4 + -2 + 0 + 2

∑ = -4

4. 1 + 1/4 + 1/16 + 1/64 + 1/256

This is a geometric sequence where the first term is 1 and the common ratio is 1/4.  The nth term is:

a = 1 (1/4)ⁿ⁻¹

So the series is:

\sum_{j=1}^{7}(\frac{1}{4})^{j-1}

5. -5 + -1 + 3 + 7 + 11

This is an arithmetic sequence where the first term is -5 and the common difference is 4.  The nth term is:

a = -5 + 4(n−1)

a = -5 + 4n − 4

a = 4n − 9

So the series is:

\sum_{j=1}^{5}(4j-9)

5 0
3 years ago
Forty-five percent of the 300 shoppers in a supermarket bought milk. How many of the shoppers in a supermarket bought milk?
Orlov [11]
Turn 45% into a decimal.  You get 0.45,  because you move the decimal two places to the left.

Then multiply 300*0.45
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135 Shoppers in the supermarket bought milk.
7 0
3 years ago
Explain how to use absolute value to find the distance between (-2,-2) and (-2,5)
dem82 [27]
The absolute value of a number is its distance away from zero. Depending on how far away a number is, it has a less or greater absolute value. (-2,-2) have the same absolute value while (-2,5) have a different absolute value. Which has a greater absolute value? -25 or 6? The answer: -25, it is farther away from zero.
6 0
3 years ago
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