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3 years ago

Explain your answer

2 answers:

7 0

$(4w^2-7w-6)-(8w^2+2w-3)\\ -(a\pm b)=-1(a\pm b)\ \ \ \ |use\ a\ distributive\ property: a(b\pm c)=ab\pm ac\\\\\=4w^2-7w-6-8w^2-2w-(-3)\\\\ = 4w^2-7w-6-8w^2-2w-(-3)\\\\=(4w^2-8w^2)+(-7w-2w)+(-6+3)\\\\=\boxed{-4w^2-9w-3}$

Nataliya [291]3 years ago

6 0

(4w² - 7w - 6) - (8w² + 2w - 3)
(4w² - 8w²) + (-7w - 2w) + (-6 + 3)
-4w² - 9w - 3
The answer is A.

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Choch Question 3 3.1 Construct the following triangles: 3.1.1 ADEF with EF = 7cm,

olasank [31]

We have to construct a triangle DEF with EF = 7 cm. It is given that we have to make an angle of 50⁰ at E and at F.

Steps to make a triangle DEF:

Step 1: Draw a line segment EF equal to 7 cm, using a ruler.

Step 2: Put the center of the protractor on the one end of the line segment that is at E and make the given angle that is 50⁰.

Step 3: Make the angle of 50⁰ at F by using protractor.

Step 4: Extend the line from E and F in the direction of 50⁰. After extending the line segments, we get an intersection point, name that point D..

Step 5: The point D, is made from the intersection of the line segment from E and F.

Step 6: Hence, triangle DEF is constructed.

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2 years ago

A college radio station sponsors a contest once a week. One resident from a dormitory calls in and tries to answer ten questions

Leni [432]

Answer:

<em>There were 8 correct answers and 2 incorrect answers.</em>

Step-by-step explanation:

The contest consists of paying $50 for each correctly answered question and subtracting $25 for each incorrectly answered question.

Let's call:

x = Number of correct answers

y = Number of incorrect answers

The resident from a dormitory answered 10 questions last week. This leads to the following condition:

$x + y = 10\qquad\qquad [1]$

Since each correct answer adds $50 and each incorrect answer subtracts $25, the weekly balance is

50x - 25y

The contestant earned $350, thus:

50x - 25y = 350

Dividing by 25:

2x - y = 14

Adding this equation with [1]:

x + 2x = 24

Simplifying:

3x = 24

x = 24 / 3

x = 8

From [1]:

y = 10 - x = 10 - 8

y = 2

There were 8 correct answers and 2 incorrect answers.

3 0

3 years ago

Which equation is true for the value x = 15? A. 2(x + 3) = 40 B. 2(x − 5) = 30 C. 2(x + 5) = 40 D. x + 2x = 30 E. 3x − x = 45

Oliga [24]

the correct answer is option C.

hope this was helpful..:-)

6 0

3 years ago

Read 2 more answers

The graph shows a point at (4,1) and a line segment with endpoint at (2,2) and (6,2) This line segment will be dilated with the

Mamont248 [21]

Dilation involves changing the size of a figure

The endpoints of the image are (0,3) and (8,3)

<h3>How to determine the coordinates of the image</h3>

The coordinates of the pre-image are give as:

(2,2) and (6,2)

The scale factor is given as:

k = 2

The center of dilation is given as:

(a,b) = (4,1)

The coordinates of the image are then calculated as:

(x,y) = (k(x -a) + a, k(y -b) + b)

For (2,2), we have:

$(x,y) \to (2(2 -4) + 4, 2(2 - 1) + 1)$

$(x,y) \to (0, 3)$

For (6,2), we have:

$(x,y) \to (2(6 -4) + 4, 2(2 - 1) + 1)$

$(x,y) \to (8, 3)$

Hence, the endpoints of the image are (0,3) and (8,3)