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svetoff [14.1K]
2 years ago
5

How can you get coefficients that are equal for X? 3x + 2y = 12 6x + 3y = 21

Mathematics
1 answer:
Verizon [17]2 years ago
5 0

Step-by-step explanation:

To make the coefficient of x equal we can multiply both sides of (1) by 2. the answer is B

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What is the approximate height of the tower in meters?
ivanzaharov [21]
Use similar triangles
distance of man from puddle = 0.5 m.
distance of puddle from tower = 13 - 0.5 = 12.5 meters
so we have 2 similar triangles
one has height 2 m and base 0.5 m and the other has height x m ( the tower) and base 12.5 m

Corresponding sides are in the same ratio, so

2 / x =  0.5 / 12.5

0.5x = 2*12.5 = 25

x = 25 / 0.5 = 50 m

The tower is approx 50 m high.
7 0
3 years ago
Jordan wants to know how long it will take for the money she deposited to double. she has an interest rate of 4 percent. calcula
hodyreva [135]
2=1.04^t

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3 years ago
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I need help :( this problem is very confusing
Sladkaya [172]

Answer:

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Step-by-step explanation:

It's arithmetic  b/c  you're just adding  1

arithmetic

1

1

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6 0
2 years ago
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How to solve nonlinear equations using iteration method?
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7 0
3 years ago
If sine theta equals three over four, what are the values of cos θ and tan θ?
ratelena [41]

Answer:

In words, Cosine theta equals plus or minus square root of seven over 4,tangent theta equals plus or minus  three over root seven

Step-by-step explanation:

Given that sin ∅ =3/4 It means the ratio of the opposite side to the hypotenuse side is 3:4.

Using the Pythagoras theorem we can calculate the hypotenuse adjacent as follows.

a²+b²=c²

a²=c²-b²

a²=4²-3²

a²=16-9

a²=7

a=√7

Then Cos ∅= opposite/ adjacent

=√7/4

Then Tan ∅ = opposite/adjacent

=3/√7

In words, Cosine theta equals plus or minus square root of seven over 4,tangent theta equals plus or minus  three over root seven.

7 0
3 years ago
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