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Luda [366]
3 years ago
5

Write a system of equations to represent this situation. Use x to represent Portugal and y to represent brazil

Mathematics
1 answer:
Marat540 [252]3 years ago
4 0

Answer:

P + B = 14130P + 150B = 1920

Step-by-step explanation:

P + B = 14130P + 150B = 1920

P = 14 - B  

130(14-B) + 150 = 1920

20B = 100

B = 100/20 = 5  

P = 14 - 5 = 9

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Which action is not a step in using paper folding to find the midpoint of a line
dedylja [7]

Answer:

A. Draw a line from the segment to any point on the fold line.

Step-by-step explanation:

When using the paper folding method to find the midpoint of a line segment we take the following steps:

  1. Draw a line segment on the tracing paper
  2. Fold the tracing paper so that the endpoints lie on top of each other
  3. Mark the intersection of the fold and the segment with a point

These steps include statements B, C, and D. Drawing a line from the segment to any point on the fold line, which is statement A,  is not included in these steps because it is not needed.

Thus, choice A is not a step in using paper folding to find the midpoint of a line segment.

5 0
3 years ago
A rectangle has an area of 100 square centimeters. The base of the rectangle is 25 centimeters. What is the height of the rectan
enyata [817]
You find area by multiplying base and height.
The formula is  A=bh
so 100=25h
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100=25*4

4cm is your answer
5 0
3 years ago
Read 2 more answers
Answer it and show your work. Which letter choice is it.
ivanzaharov [21]

Answer:

b = 55 degrees

Step-by-step explanation:

The angles 30, a, b and 45 must sum up to 180 degrees

Subtracting (30 + 45) from both sides leaves us with a + b = 105 degrees.

But b = a + 5.  Substituting a + 5 in the equation above yields

a + a + 5 = 105 degrees, so that

2a = 100 degrees, and a = 50 degrees.  Then b = a + 5, or b = 55 degrees.

7 0
3 years ago
The point (1, −1) is on the terminal side of angle θ, in standard position. What are the values of sine, cosine, and tangent of
mixer [17]
Notice the picture below

x = 1 and y = -1

now... recall your SOH CAH TOA   \bf sin(\theta)=\cfrac{y}{r}
\qquad 
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cos(\theta)=\cfrac{x}{r}
\qquad 
% tangent
tan(\theta)=\cfrac{y}{x}

now.. what's the value for "r" or the radius? well, using the pythagorean theorem \bf c^2=a^2+b^2\implies c=\sqrt{a^2+b^2}\qquad 
\begin{cases}
a=x\\
b=y\\
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\end{cases}

6 0
3 years ago
Suppose you begin with a pile of n stones and split this pile into n piles of one stone each by successively splitting a pile of
rodikova [14]
Start with five stones
7 0
3 years ago
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