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navik [9.2K]
3 years ago
7

40+5-9x+4 I need help with this it needs to be simplified

Mathematics
1 answer:
ludmilkaskok [199]3 years ago
5 0

Step-by-step explanation:

40 + 5 - 9x + 4

45 - 9x + 4 = 0

41 - 9x = 0

41 = 9x

41/9 = x

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Evaluate 3 over 2y-3 + 5 over 3z when y=6 and z=3.
anastassius [24]

Answer:

\frac{8}{9}Step-by-step explanation:[tex]\frac{3}{2y-3}  + \frac{5}{3z}    y = 6, z = 3

Substitute values into the expression:

\frac{3}{2(6)-3}  + \frac{5}{3(3)}

Simplify both fractions:

\frac{3}{9}  + \frac{5}{9}

Add the fractions:

[tex]\frac{8}{9}

3 0
4 years ago
The work of a student to solve the equation 3(2x − 4) = 8 + 2x + 6 is shown below:
My name is Ann [436]
The student made a mistake in step 2 because he added it instead of multiplying. So for step 2 the correct answer is 6x-12 =8+2x+6 
3 0
3 years ago
What is the value of x in the equation 5(3x + 4) = 23?<br> A)43/15<br> B)3/15 <br> C)15/43<br> D)2/5
Romashka [77]
It would be B) 3/15
You distribute 5 to both 3x and 4, giving you 15x+20=23
Then, you subtract 20 from both sides of the equation, giving you 15x = 3
And then you divide both sides by 15 so you can isolate x
8 0
3 years ago
If (x+Y)=6 and xy=2 find the value of x²+y²​
disa [49]

The answer is 52

Step-by-step explanation:

hope that helps!:)

4 0
3 years ago
The graph shows the dilation of ΔABC with the origin as its center. Which rule describes this transformation? A) (x, y) → (2x, 2
podryga [215]

<u><em>Note: Since, you have not added the graph. So, I will give you a general overview of the concept of dilation, the understanding of which will make you clear your concept.</em></u>

Step-by-step explanation:

We know that a dilation is the kind of transformation which produces an image which has the same shape as the original object, but having a different size.

Here are some key factors regarding dilation:

  • Enlargement occurs when a dilation does create a larger image.
  • Reduction occurs when a dilation does create a smaller image.
  • A dilation shrinks or stretches the original object.
  • If the scale factor > 1, the image will be a stretch (enlargement)
  • If the scale factor is between 0 and 1, the image will be shrunk (reduction)
  • If the scale factor = 1, the original object and the image will be congruent

Here is the impact of dilation when (x, y) → (2x, 2y):

  • Dilation with scale factor 2, will have the rule as (x, y) → (2x, 2y). The image will be a stretch (enlargement) as the scale factor > 1.
  • The location of the new coordinates of the image can be obtained by multiplying the coordinates of the original figure by 2.

For example, the coordinates of the image of a point A(4, 8) will be A'(2×4, 2×8) or A'(8, 16) after the dilation of scale 2 at the origin.

Here is the impact of dilation when (x, y) → (0.5x, 0.5y):

  • Dilation with scale factor 0.5, will have the rule as (x, y) → (0.5x, 0.5y). The image will be shrunk (reduction) as the scale factor < 1.
  • The location of the new coordinates of the image can be obtained by multiplying the coordinates of the original figure by 0.5.

For example, the coordinates of the image of a point A(4, 8) will be A'(0.5×4, 0.5×8) or A'(2, 4) after the dilation of scale 0.5 at the origin.

Keywords: dilation, transformation, enlargement, reduction

Learn more about dilation from brainly.com/question/13846651

#learnwithBrainly

8 0
3 years ago
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