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Elan Coil [88]
2 years ago
8

Need help fast hs geometry

Mathematics
1 answer:
harina [27]2 years ago
6 0
  • Measure of angle C = 100°
  • Measure of angle A = 40°
  • We know, sum of all angles of a triangle is 180°.
  • Therefore, the measure of angle B

= [180 - (100 + 40)]° = 40°

  • When two angles of a triangle are equal, then the triangle is isosceles.
  • Here, the measure of angle A and B are equal, i.e., 40°
  • So, ∆ABC is an isosceles triangle.

<u>Answers:</u>

  1. <u>4</u><u>0</u><u>°</u>
  2. <u>Yes</u>

Hope you could get an idea from here.

Doubt clarification - use comment section.

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Please help will mark brainliest!!!
11Alexandr11 [23.1K]
Correct answers
1). first option
4) last option
------------------

8 0
3 years ago
Read 2 more answers
can someone please help me i am failing my math and am very behind my math grade level can someone explain this to me please
xenn [34]

Answer:

The answer to number 7 is -1.25

The answer to number 8 is 1.25



4 0
3 years ago
The length of a photograph is 3cm less than twice the width. The area is 54cm^2. Find the dimensions of the photograph.
REY [17]
W= width
l= length= 2w-3

Area= length * width
A= lw
substitute l=2w-3 for l
54= (2w-3)(w)
54= 2w^2 - 3w
subtract 54 from both sides
0= 2w^2 - 3w - 54
factor the polynomial
0= (2w + 9)(w - 6)

Set each set of parentheses equal
to 0 and solve for width.

0=2w+9
-9=2w
-4.5= w NEGATIVE VALUE

0=w-6
6 cm=w

-4.5 is not the answer because it has a negative value. You cannot have a negative side of a photograph. So substitute 6 in to find length.

length= 2w-3
l= 2(6)-3
l= 12-3
l= 9 cm

CHECK:
w= 6cm
l= 9cm
Area= length * width
54= 6*9
54= 54

ANSWER: width= 6cm; length= 9cm

Hope this helps! :)
4 0
2 years ago
Can you solve it please and explain step by step how u got it ?????Please​
allochka39001 [22]

Answer:

m<7 = 61

Step-by-step explanation:

These angles (<7, and <8) are adjacent to each other (they are next to each other), therefore they are supplementary (add up to 180).

180 - 119 = m<7

4 0
2 years ago
In the diagram below, BD is parallel to Y. What is the value of y?
Serjik [45]
The answer is A. 67 , hope this helps
5 0
3 years ago
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