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MAXImum [283]
3 years ago
14

there are a total of 122 countries in Africa, Europe, and North America. Europe has twice as many countries as North America, an

d Africa has seven more than Europe. How many countries are in each continent? write an equation and solve it to answer the question
Mathematics
1 answer:
lana66690 [7]3 years ago
8 0
E = 2N

A = E +  7 = 2n + 7

n + 2n + 2n +7 = 122
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The Japanese Yen corresponds to the American Dollar. If the exchange rate is 150 Yen for 1 Dollar, then a Japanese car sold in A
Papessa [141]

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125,000

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1,500,000 divided by 12 = 125,000

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Which dilation is shown by this graph?
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1/3

Step-by-step explanation:

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3 years ago
Is anyone able to answer this for me? GIVING BRAINLIEST! hurry!
svetoff [14.1K]
Nicoles pattern:

1
5
17
53
161

Ian’s pattern:

0
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3
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Ordered pair:

(1, 0)
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(17, 3)
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Table 1 -

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Sequence 2:

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Ordered pair:

(20, 20)
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Table 3 -

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1
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7
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Sequence 2:

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5 0
2 years ago
Myra is evaluating the expression –31. 7 4. 5x, when x = 2. 1. -31. 7 4. 5(2. 1) –27. 2(2. 1) –57. 12 What was Myra’s error? Myr
murzikaleks [220]

This is just an algebraic problem, the correct option is:

<em>"Myra should have multiplied 4.5 and 2.1 first."</em>

<h3>How to evaluate an expression?</h3>

Here we want to evaluate the expression:

-31.7 + 4.5*x

in x = 2.1

This just means that we need to replace x by 2.1 in the given equation.

Now, what Myra does is:

-31.7 + 4.5*2.1 = -27.2*2.1

So she took the sum between -31.7 and 4.5 first, this is her mistake, you only would do that if the expression was:

(-31.7 + 4.5)*2.1

But in our expression:

-31.7 + 4.5*2.1

The first thing you need to solve is the product in the second term, so we get:

-31.7 + 4.5*2.1 = -31.7 + 9.45 = -22.25

If you want to learn more about algebra, you can read:

brainly.com/question/4344214

4 0
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