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Bezzdna [24]
3 years ago
5

A rectangle has a height of 2x4 and a width of x2 + 8x + 15.

Mathematics
1 answer:
aliina [53]3 years ago
7 0

Answer:

2x⁶ + 16x⁵ + 30x⁴

Step-by-step explanation:

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Rounding each number to the nearest tenth 2.65=
mixas84 [53]

Answer:

2.7

Step-by-step explanation:

that is correct....

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What is the approximate radius of a sphere of volume 528 m³? round the answer to hundreth
makvit [3.9K]

\\ \sf\longmapsto V=\dfrac{4}{3}πr^3

\\ \sf\longmapsto 528=\dfrac{4}{3}πr^3

\\ \sf\longmapsto \pi r^3=528\times \dfrac{3}{4}

\\ \sf\longmapsto πr^3=32(3)

\\ \sf\longmapsto \pi r^3=96

\\ \sf\longmapsto 3.14r^3=96

\\ \sf\longmapsto r^3=\dfrac{96}{3.14}

\\ \sf\longmapsto r^3=30.57

\\ \sf\longmapsto r=3.09m=3.1m

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3 years ago
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Are the triangles congruent?Why or why not?
Sergeu [11.5K]

Answer:

Triangles are congruent when all corresponding sides and interior angles are congruent. The triangles will have the same shape and size, but one may be a mirror image of the other.

Step-by-step explanation:


3 0
3 years ago
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(Need Help!) 2. A cell phone provider charges $30 each month to have a cell on their plan, but their talk and text are not free.
algol13

x = number of text messages sent

0.2x+40=50

0.2x = 10

5(0.2x) = 5(10)

x = 50

Therefore, 50 text messages would have to be sent or received in order for the plans to cost the same each month. I hope this helps please give me brianlist

8 0
3 years ago
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Use the points (2, 14) and (10, 22) to write the equation of the line of best fit shown
luda_lava [24]

Answer:

The equation of the line best fit is y = x + 12

Step-by-step explanation:

The form of the linear equation is y = m x + b, where

  • m is the slope of the line
  • b is the y-intercept

The rule of the slope is m = \frac{y2-y1}{x2-x1} , where

  • (x1, y1) and (x2, y2) are two points on the line

∵ The line passes through points (2, 14) and (10, 22)

∴ x1 = 2 and y1 = 14

∴ x2 = 10 and y2 = 22

→ Substitute them in the rule of the slope above to find it

∵ m = \frac{22-14}{10-2}=\frac{8}{8}=1

∴ m = 1

→ Substitute it in the form of the equation above

∴ y = (1)x + b

∴ y = x + b

→ To find b substitute x by 2 and y by 14 in the equation

∵ 14 = 2 + b

→ Subtract 2 from both sides

∴ 14 - 2 = 2 - 2 + b

∴ 12 = b

→ Substitute it in the equation

∴ y = x + 12

∴ The equation of the line best fit is y = x + 12

8 0
3 years ago
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