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loris [4]
3 years ago
5

An unknown or changeable quantity is

Mathematics
1 answer:
PSYCHO15rus [73]3 years ago
5 0

Answer:

Dependent Variable

Step-by-step explanation:

For example, the number of different colors on the page cannot be changed, but driving 80 miles per hour is changeable.

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in 2005 a car was sold new for $12,500. in 2008 value of the car was $8750. find the percent. decrese
Lady_Fox [76]
N-O
———-
O

(New - old
—————
O)

8750-12500
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12500

-3750
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12500

=030%
7 0
3 years ago
(x+7)^2+9=0<br><br> Find x with quadratics
Ne4ueva [31]

Answer:

x = -7 ±3i

Step-by-step explanation:

(x+7)^2+9=0

Subtract 9 from each side

(x+7)^2+9-9=0-9

(x+7)^2=-9

Take the square root of each side

sqrt((x+7)^2) = ±sqrt(-9)

We know sqrt(ab) = sqrt(a) sqrt(b)

x+7 = ±sqrt(-1) sqrt(9)

We know that sqrt(-1) is the imaginary number i

x+7 = ±i *3

x+7 =±3i

Subtract 7 from each side

x+7-7 = -7 ±3i

x = -7 ±3i

6 0
3 years ago
Read 2 more answers
5/8 9/x the figures are similar find x
Drupady [299]
5/8 9/x

Cross multiply

9x8=72
5×x=5x

Rewrite the equation

72 = 5x

Divide by 5

72÷5=14.4

So, x=14.4
8 0
3 years ago
Find the missing side lengths leave your answer as a racials simplest form
Aleksandr-060686 [28]

Answer:

m=7\sqrt3

n=7

Step-by-step explanation:

Hi there!

We are given a right triangle (notice the 90°) angle, the measure of one of the acute angles as 60°, and the measure of the hypotenuse (the side OPPOSITE from the 90 degree angle) as 14

We need to find the lengths of m and n

Firstly, let's find the measure of the other acute angle

The acute angles in a right triangle are complementary, meaning they add up to 90 degrees

Let's make the measure of the unknown acute angle x

So x+60°=90°

Subtract 60 from both sides

x=30°

So the measure of the other acute angle is 30 degrees

This makes the right triangle a special kind of right triangle, a 30°-60°-90°  triangle

In a 30°-60°-90° triangle, if the length of the hypotenuse is a, then the length of the leg (the side that makes up the right angle) opposite from the 30 degree angle is \frac{a}{2}, and the leg opposite from the 60 degree angle is \frac{a\sqrt3}{2}

In this case, a=14, n=\frac{a}{2}, and m=\frac{a\sqrt3}{2}

Now substitute the value of a into the formulas to find n and m to find the lengths of those sides

So that means that n=\frac{14}{2}, which is equal to 7

And m=\frac{14\sqrt3}{2}, which simplified, is equal to 7\sqrt3

Hope this helps!

7 0
3 years ago
Andrew writes the algebraic expression 2s + 2.79 to represent the cost of his lunch. He bought 2 sandwiches and a large drink. I
olga nikolaevna [1]
Variables=S
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6 0
2 years ago
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