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avanturin [10]
3 years ago
8

-8d - 5d +7d=72 what is the answer i am completely lost

Mathematics
1 answer:
erma4kov [3.2K]3 years ago
5 0

Answer:

d=-12

Step-by-step explanation:

hope this helps!

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Hannah notices that segment HI and segment KL are congruent in the image below: Two triangles are shown, GHI and JKL. G is at ne
BlackZzzverrR [31]

Answer:

segment IG ≅ segment LJ

Step-by-step explanation:

Please refer to the attached image as per the triangles as given in the question statement.

\triangle HGI, \triangle JKL

G\left(-3,1\right),\ H\left(-1,1\right),\ I\left(-2,3\right)

J\left(3,3\right),K\left(1,3\right),L\left(2,1\right)

Given that:

HI\cong KL and

\angle I \cong \angle L

<em>SAS congruence </em>between two triangles states that two triangles are congruent if two corresponding sides and the angle between the two sides are congruent.

We are given that one angle and one sides are congruent in the given triangles.

We need to prove that other sides that makes this angle are also congruent.

To show the triangles are congruent i.e. \triangle GHI \cong \triangle JKL by SAS congruence we need to prove that

segment IG ≅ segment LJ

Let us use Distance formula  to find IG and LJ:

D = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}

IG  =\sqrt{(-2+3)^2+(3-1)^2} =\sqrt5\ units

LJ  =\sqrt{(2-3)^2+(1-3)^2} =\sqrt5\ units

Hence, segment IG ≅ segment LJ

\therefore ΔGHI ≅ ΔJKL by SAS

4 0
3 years ago
5. Suppose you are the manager of a music store. At the end of one week you are going over
Vaselesa [24]

Answer:

Step-by-step explanation:

x = cheaper compact disc

y = more expensive compact disc

x + y = 375.....x = 375 - y

12.95x + 14.95y = 5306.25

12.95(375 - y) + 14.95y = 5306.25

4856.25 - 12.95y + 14.95y = 5306.25

4856.25 + 2y = 5306.25

2y = 5306.25 - 4856.25

2y = 450

y = 450/2

y = 225 <==== there were 225 of the more expensive compact discs sold

x + y = 375

x + 225 = 375

x = 375 - 225

x = 150 <==== there were 150 of the cheaper compact discs sold

check...

12.95x + 14.95y = 5306.25

12.95(150) + 14.95(225) = 5306.25

1942.50 + 3363.75 = 5306.25

5306.25 = 5306.25 (correct)

8 0
3 years ago
What is -1 26/100 in simplest form
Alla [95]

-63/50



I think this is what you mean by simplest fom


5 0
3 years ago
Lee Jenkins worked the following hours as a manager for a local Pizza Hut: 67, 9,6 and 8 How many total hours did Lee
PSYCHO15rus [73]

Answer:

90 hours

Step-by-step explanation:

  1. 67 + 6 + 9 + 8 = 90 hours
8 0
3 years ago
Can someone help me out?
LiRa [457]

1. perimeter = 4 and area = 1

2. permeter = 8 and area = 4

3. perimeter = 12 and area = 9

4. perimeter = 16 and area = 16

5. perimeter = 20 and area = 25

7 0
4 years ago
Read 2 more answers
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