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jenyasd209 [6]
3 years ago
9

What is the value of x in the equation 3x – 4y = 65, when y = 4? the answer is x=27

Mathematics
1 answer:
Olenka [21]3 years ago
7 0
What is the value of x in the equation 3x-4y=65 when y=4?

Simple...plug n chug..

3x-4(4)=65

3x-16=65

Now, isolate the variable, x....

3x-16=65
    +16 +16

3x=81

Now, divide,

\frac{3x}{3} = \frac{81}{3}

x=27.

Thus, your answer.
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A triangle with vertices at A(0,0), B(0,4), and C(6,0) is dilated to yield a triangle with vertices at A(0,0), (B(0,10), and C (
dezoksy [38]

The required scale factor for the dialed triangle is given by SF= 6.28

A triangle with vertices at A(0,0), B(0,4), and C(6,0) is dilated to yield a triangle with vertices at A(0,0), (B(0,10), and C (C(15,0).

<h3>What is scale factor?</h3>

The scale factor is defined as the ratio of modified change in length to the original length.

Since, the height and base of the triangle is y coordinate of B and x coordinate of c is given by 4, 6
Area of triangle =1/2(base x height)
                         = 1/2 (4 x 6)
                         =   4.8
Similarly, for dilated triangle
Area of dilated triangle =  30

Now, scale factor(SF) = area of dilated triangle \ area of triangle
SF = 30/4.8
SF = 6.25

Thus, the required scale factor is SF = 6.25

 

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2 years ago
S= 4LW + 2WH; S=152, L=8, W=4. Find H
Katyanochek1 [597]
H is equal to 3. need the solution?
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3 years ago
What is the definition of congruent
Alinara [238K]

Answer:

more ... The same shape and size, but we are allowed to flip, slide or turn. In this example the shapes are congruent (you only need to flip one over and move it a little). Angles are congruent when they are the same size (in degrees or radians). Sides are congruent when they are the same length.

Step-by-step explanation:

happy to help ya:)

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5u - (-20u) - u - 18u + (-11u) = 10
5u + 20u - u - 18u - 11u = 10
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So, in conclusion, X, is equal to -2.
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im so sad i literally cried for 10 min straight because i have three 70's on my grade progress report and my mom only wants 80's
givi [52]

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