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Ronch [10]
4 years ago
12

6r = 3 (r - 4) - r hi plzzzzzz

Mathematics
2 answers:
Burka [1]4 years ago
5 0

Answer:

r = -3

Step-by-step explanation:

trust.

Anika [276]4 years ago
4 0
I don’t need to explain, all the math is there.

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How many 1/7 inch pieces can be cut from a piece of ribbon 5/21 of an inch long
yawa3891 [41]

Hello there! :D

6 in' pieces can be cut! :D

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3 years ago
The average daily temperature in krez town went from -15 degrees in february to 47 degrees in march. what was the change in temp
ser-zykov [4K]

The change in temperature of Krez is 62 degrees.

According to the given question.

The temperature of Krez in February was -15 degerees.

And the temeperature of Krez in March was 47 degrees.

Therefore,

The change in temperature of Krez

= 47 degrees - (-15 degrees)

= (47 + 15)degrees

= 62 degrees

Hence, the change in temperature of Krez is 62 degrees.

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1 year ago
On a coordinate plane, triangle A B C has points (negative 2, 7), (negative 2, 3), and (negative 6, 3) and triangle D E F has po
Kipish [7]

Question:

On a coordinate plane, △ABC has points (-2, 7), (-2, 3), and (-6, 3) and △DEF has points (-2,-10), (-2, -2), and (6, -2).

Given that

\frac{AB}{DE} = \frac{BC}{EF} = \frac{1}{2}

Complete the statements to show that △ABC ~ △DEF by the SAS similarity theorem.

Horizontal and vertical lines are __(1)__. So, angles are right angles by definition of perpendicular lines. All right angles are __(2)__

Therefore, △ABC ~ △DEF by the SAS similarity theorem.

Answer:

(1) perpendicular

(2) congruent

Step-by-step explanation:

Required

Fill in the gaps

\frac{AB}{DE} = \frac{BC}{EF} = \frac{1}{2} implies that:

AB : DE= BC : EF

In other words:

AB ~ DE ---- Side (S)

and

BC ~ EF ---- Side (S)

Now to fill in the gap with:

(1) perpendicular

(2) congruent

<u>Further explanation</u>

(1) Vertical lines and horizontal lines meet at a right angle (i.e. 90 degrees). Any two lines that meet at a right angle are perpendicular

(2) Angles with equal measures are congruent. Because right angles have a congruent angles of 90 degrees, then they are congruent.

7 0
3 years ago
Read 2 more answers
Ten times the sum of half a number and 6 is 8
tamaranim1 [39]
Half = 0.5
x-the number

<span>Ten times the sum of half a number and 6 is 8:

10 · (0.5x + 6) = 8    |use distributive property: a(b + c) = ab + ac
5x + 60 = 8    |subtract 60 from both sides
5x = -52    |divide both sides by 5
<span>x = -10.4</span></span>
7 0
3 years ago
Given a polyhedron with 12 faces and 30 edges, how many vertices does it have?
larisa86 [58]

Answer:

It should have 20 vertices, and the name is dodecahedron

8 0
4 years ago
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