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8090 [49]
3 years ago
5

Please help me fast x over 7 minus 12 equals negative 2

Mathematics
2 answers:
andrey2020 [161]3 years ago
5 0

Answer:

x= 70

Step-by-step explanation:

The equation is: x/7-12= -2

First, do inverse operations. Do = +12 on each side to get rid of 12

Now: x/7=10

Multiply 7 on each side

Now: x=70

Hope this helped!!! :D

Sergeu [11.5K]3 years ago
4 0

Answer:  70

Step-by-step explanation:

x/7 - 12 = -2

add 12 to both sides of the equal sign

then multiply by 7 on both sides of the equal sign.

x = 70

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vitfil [10]
The answer is C ; 351.2 feet!
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2 years ago
2. Select all transformations that must take any point A to any point B.
kherson [118]

The given transformation of reflection, rotation and translation are rigid transformation

The transformation that must take any point A to any point B are;

  • <u>Rotation of 180° around the midpoint of segment AB</u>
  • <u>Reflection across the perpendicular bisector</u>
  • <u>Translation by the directed line segment AB</u>

Reason:

<em>Question: The given quadrilaterals ABCD and A'B'C'D' are congruent</em>

Required; To select all transformation that must take a point A to point B

Solution:  

  • Rotation of 180° around the midpoint of segment AB

A rotation of 180° about the midpoint of segment AB will change the places of points A and B

A(x, y) → R₁₈₀ → A'(-x, -y)

Let the coordinates of the origin be the midpoint of segment AB, and let (x, y) represent the coordinate of the point B(x, 0) we have;

∴ The coordinates of point A is A(-x, 0), which gives;

A(-x, 0) → R₁₈₀ → A'(x, 0) = point B

Therefore a rotation about the midpoint of AB must take point A to point B

  • Reflection across the perpendicular bisector

The reflection of a point (x, y) about y-axis gives a point (-x, y), therefore, we have;

A(-x, 0) → Reflection across the y-axis → A'(x, 0) = point B

Therefore, a reflection across the perpendicular bisector of the line AB must take the point A to point B

  • Translation by the directed line segment AB

A translation along the directed line segment AB of point A(-x, 0) 2·x units right gives;

A'(-x + 2·x, 0) = A'(x, 0) = Point B

Therefore, the transformations that must take any point A to any point B are;

<u>Rotation of 180° around the midpoint of segment AB</u>

<u>Reflection across the perpendicular bisector</u>

<u>Translation by the directed line segment AB</u>

Learn more here:

brainly.com/question/12369596

8 0
3 years ago
Sara had 39 peaches and 25 pears left at her roadside fruit stand. She went to the orchard and picked more to stock up the stand
Maksim231197 [3]

Answer:

Sara picked 48 peaches.

Step-by-step explanation:

Sara originally had 39 peaches, but after picking more, she had 87 peaches.

If x is the number of peaches she picked, then:

x + 39 = 87

x = 48 peaches

3 0
3 years ago
What produces a graph in a straight line
Blababa [14]
Linear equations in one variables shows always graph in straight line,

For ex: x = 3, y = 4, x = -1.5, y = -2/3

Also two variables linear equations with degree of 0 or 1 (Each term) shows always graph in straight line,

For ex: x + y = 5, 2x - 4y = 7 etc.
8 0
3 years ago
A boat can travel with a speed of 13 km/hr in still water. If the speed of the stream is 4 km/hr, find the time taken by the boa
ser-zykov [4K]

Answer:

t=4h

Steps below

Step-by-step explanation:

We know:

speed of boat with respect to earth:  13  km

speed of stream with respect to earth:  4 km

13 km/h + 4 km/h = 17 km/h The time to travel 68 km with this speed is thus t = 68 km 17 km h = 4 h

<em><u>Hope this helps.</u></em>

4 0
3 years ago
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