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kotegsom [21]
3 years ago
5

Also please let me know if the first 3 are incorrect

Mathematics
1 answer:
zhuklara [117]3 years ago
4 0
They look good keep up the good work
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Expand and simplify (x + 5)(x - 2)
ziro4ka [17]

Answer: *x squred +3x-10*

Step-by-step explanation:

(x+5)(x-2)

x squred-2x+5x-10

x squred +3x-10

5 0
4 years ago
Read 2 more answers
A certain alloy contains 14% tin and 32% copper. (The percentages are by weight.) How many pounds of tin and how many pounds of
jek_recluse [69]

Answer:

The answer is 10 I believe! A whole triangle is equal to 180 degrees so 180-70-60-60= -10. So we have to add 10 to equal it to zero. Hope this helped

Step-by-step explanation:

5 0
3 years ago
Please help me on this asap this is very important :D
Anettt [7]

Answer:

78.5

Step-by-step explanation:

area of a circle is \pi r^{2}

3.14(5^{2})=78.5

4 0
3 years ago
The three angles of a triangle have
dexar [7]

Answer:

56°, 84°, 40°

Step-by-step explanation:

The three angles of triangles have measures of 56°, (2x + 4)º, and xº.

We need to find the measures of the three  angles of the triangle.

We know that, the sum of angles of triangle is equal to 180º. Using this property we get :

56°+ (2x + 4)º + xº =180º

Solving for x.

60 + 3x = 180

3x = 120

x = 40º

Other angle, = 2x+4

= 2(40)+4

= 80+4

= 84º

So, the measures of the three  angles of the triangle are 56°, 84°, 40°. Hence, the correct option is (c).

7 0
3 years ago
Under a transformation, a preimage and its image are both squares with side length 3. The image, however, is rotated with respec
Amanda [17]

A rigid transformation is a rigid motion of a geometric object on a plane

The correct response is; <u>Yes</u>, the transformation is a rigid motion

<u />

Reason:

A rigid transformation or rigid motion is a motion in which the distance between pairs of corresponding points on the image and the preimage are equal

Therefore, given that the side lengths of the square, are each of length 3, such that the size of the preimage and the image are equal, and therefore, the distances between corresponding pairs of points on the image and the preimage, are equal, the transformation is a <u>rigid motion</u>

Learn more about rigid motion here:

brainly.com/question/10638726

3 0
2 years ago
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