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3 years ago

Find the value of x. 899 46 X

Mathematics

2 answers:

Aleksandr [31]3 years ago

6 0

180-135=45
The answer is 45

Hatshy [7]3 years ago

3 0

Answer:

I think it's 45.

Step-by-step explanation:

46 + 89 = 135

adding all the angles of a triangle will always equal 180.

180 - 135 = 45

the last angle is 45.

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4 years ago

Is y^2-x^2=16 functional?

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No, it is not a function.

Step-by-step explanation:

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4 years ago

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Zoe is working two summer jobs, making $7 per hour babysitting and making $15 per hour clearing tables. In a given week, she can

Eddi Din [679]

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She must work at least 7 hours. All possible values are 7, 8, 9, 10

Step-by-step explanation:

14 - 4 = 10

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4 years ago

colleen's family plans to paint the windows of their house. her father will paint twice as many windows as her mother, and Colle

Morgarella [4.7K]

Answer: 24

Step-by-step explanation:

Colleen painted 7 windows, some of which were her mother's.

Her dad painted 7+1 (8) windows, and that is twice as much as what her mother was supposed to do. Her mother was supposed to do 4 windows. That means Colleen's share was 3 windows.

If all the kids had to do an equal amount of windows, than each kid had to do 3 windows.

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3 years ago

Read 2 more answers

Start with Chanel’s sequence. How does a 90-degree counterclockwise rotation about the origin change the coordinates of a shape?

zmey [24]

When a shape is rotated, it must be rotated through a point.

90 degrees counterclockwise rotation negates the y-coordinates, and then swap the x and y-coordinates
Chanel is incorrect

The rule of 90 degrees counterclockwise is:

$(x,y) \to (-y,x)$

This means that:

The y-coordinate is negated
Then the y and x coordinates are swapped

However, Charlies transformation is incorrect.

This is so because, the shape was not rotated, but instead it was reflected across the x-axis.
Then, the shape was dilated

Using points L and Q

$L=(1,1)$

When L is reflected across the x-axis.

The rule is:

$(x, y) \to (x, -y)$

So, we have:

$(1, 1) \to (1, -1)$

Next, it is dilated by 2.

The rule of this is:

$(x,y) \to k(x,y)$

So, we have:

$(1,1) \to2 \times (1,-1)$

$(1,1) \to (2,-2)$

From the diagram, the coordinate of Q is:

$Q = (2,-2)$

Same as the calculated point

Hence, Chanel is incorrect