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iragen [17]
2 years ago
14

Help me with this please

Mathematics
1 answer:
Oksanka [162]2 years ago
5 0

Answer:

Step-by-step explanation:

for x, then, 7 = (x1+5) /2

14 = x1 + 5

9 = x1

for y, then, 4 = (y1+7) /2

8 = y1 + 7

1 = y1

S = (9,1)

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the length and width of a book are in the ratio 3:2. What fraction of the length is the width of the book
sdas [7]
What fraction of the length is the width of the book
 is 2:3

5 0
3 years ago
What is the volume of a hemisphere with a radius of 3.8in, rounded to the nearest tenth of a cubic inch
Pavel [41]

Answer: 114.9\ in.^3

Step-by-step explanation:

Given

The radius of the hemisphere is r=3.8\ in.

The volume of a hemisphere is given by

V=\dfrac{2}{3}\pi r^3

Insert the value

V=\dfrac{2}{3}\pi \times (3.8)^3\\\\V=114.9\ in.^3

7 0
2 years ago
One third of the candidates for a job were 25 years old or younger. two sevenths of the candidates were at least 50 years old. i
Shalnov [3]
There are three groups of people: 25 years old and younger, between 25 to 50, and 50 years old and older. Their fractions must equal to 1 because these three together form the whole.

1 = 1/3 + 2/7 + x
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x = 8/21

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7 0
3 years ago
Which sequence of transformations produces R’S’T’ from RST?
inn [45]

Answer:

A translation 2 units right and then a reflection over the x-axis

Step-by-step explanation:

The given vertices of ΔRST are R(0, 0), S(-2, 3), and T(-3, 1)

The vertices of triangle ΔR'S'T' are (2, 0), (0, -3), (-1, -1)

The points are plotted with the aid of MS Excel, and by observation, we have that the image of ΔRST is located on the other side of the x-axis with each coordinate on ΔR'S'T' shifted 2 units to the right of ΔRST

A translation of ΔRST 2 units right gives;

(0 + 2, 0) = (2, 0), (-2 + 2, 3) = (0, 3), and (-3 + 2, 1) = (-1, 1), to give;

(2, 0), (0, 3), and (-1, 1)

A reflection of the point (x, y) across the x-axis gives (x, -y)

A reflection of the above points across the x-axis gives;

(2, 0) reflected about x-axis → (2, 0) reflected about x-axis → (0, -3), and (-1, 1)  reflected about x-axis → (-1, -1), which are the points of ΔR'S'T'

Therefore, the sequence of transformations that produces R'S'T' from RST are;

A translation 2 units right and then a reflection over the x-axis

6 0
3 years ago
Can I get help with these two please?
PSYCHO15rus [73]
Hi, hope this helps :)

3 0
3 years ago
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