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DiKsa [7]
3 years ago
6

Using similar triangles, what is x?

Mathematics
1 answer:
Lady bird [3.3K]3 years ago
4 0
\dfrac{x}{2.5}=\dfrac{x+2.4}{2.5+2}\\
\dfrac{x}{2.5}=\dfrac{x+2.4}{4.5}\\
4.5x=2.5(x+2.4)\\
4.5x=2.5x+6\\
2x=6\\
x=3
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How could i do this? some help would be appreciated ♡​
rjkz [21]
You plug in numbers -3 to 3 into the x variable of the equation and then plot those points

y = -2x

X = -3 y = (-2)(-3) = 6

X = -2 y = (-2)(-2) = 4

X = -1 y = (-2)(-1) = 2

X = 0 y = (-2)(0) = 0

X = 1 y = (-2)(1) = -2

X = 2 y =(-2)(2) = -4

X = 3 y = (-2)(3) = -6

In case that looks a little cluttered here are the points to graph:

(-3, 6) (-2, 4) (-1, 2) (0, 0) (1, -2) (2, -4) (3, -6)

4 0
3 years ago
Explain how 2 different squares can be made using the number 9.
faltersainse [42]
You can make two squares with 8, and put a line through one of them making one square two triangles put together.
5 0
3 years ago
The price of a watch was increased by 20% to £144. What was the price before the increase?
hammer [34]

Answer:

120 pounds

Step-by-step explanation:

Since the new cost is 144 pounds and this is 20% more,  this is 120% of the original price. Remember 100+20 = 120. To find the original price set up a proportion with these values:

\frac{144}{x}=\frac{120}{100}

Solve for the original price by cross multiplying numerator with denominator.

x(120) = 144(100)

120x = 14400

x= 120 pounds


6 0
3 years ago
The value of y varies jointly with x and z. If y = 7 when z = 196 and x = 2, find the value of y when x = 3 and z = 336. I will
eimsori [14]

Answer:

18

Step-by-step explanation:

Given that:

y∞ xz

y=kxz. Where k is constant

When z=196 and x= 2 then y= 7

7=(196)(2)k

7=392k

k=1/56

There fore y=(1/56)xz

When x=3 and z =336

y=(1/56)xz

y=(1/56)(336)(3)

y=18

8 0
3 years ago
How many ounces of milk would you need for 5 ounces of flour?
monitta

Answer:

5 ounces of milk

Step-by-step explanation:

4 0
2 years ago
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