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forsale [732]
3 years ago
9

CAN SOMEONE PLEASE HELP ME WITH THIS ONE I DONT KNOW IF I’m right or no

Mathematics
2 answers:
lorasvet [3.4K]3 years ago
7 0

Answer:

you are right

Step-by-step explanation:

hope this help!!!!!

Arturiano [62]3 years ago
6 0

Answer:

Your right

Step-by-step explanation:

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A. Find PR in the diagram <br> b. Find the perimeter of quadrilateral PQRS
Elan Coil [88]

Answer:

Step-by-step explanation:

The quadrilateral has 4 sides and only two of them are equal.

A) to find PR, we will consider the triangle, PRQ.

Using cosine rule

a^2 = b^2 + c^2 - 2abcos A

We are looking for PR

PR^2 = 8^2 + 7^2 - 2 ×8 × 7Cos70

PR^2 = 64 + 49 - 112 × 0.3420

PR^2 = 113 - 38.304 = 74.696

PR = √74.696 = 8.64

B) to find the perimeter of PQRS, we will consider the triangle, RSP. It is an isosceles triangle. Therefore, two sides and two base angles are equal. To determine the length of SP,

We will use the sine rule because only one side,PR is known

For sine rule,

a/sinA = b/sinB

SP/ sin 35 = 8.64/sin110

Cross multiplying

SPsin110 = 8.64sin35

SP = 8.64sin35/sin110

SP = (8.64 × 0.5736)/0.9397

SP = 5.27

SR = SP = 5.27

The perimeter of the quadrilateral PQRS is the sum of the sides. The perimeter = 8 + 7 + 5.27 + 5.27 = 25.54 cm

6 0
3 years ago
5x +3=8 i need the value of x​
ch4aika [34]

Answer: x=1

Step-by-step explanation:

5x+3-3=8-3

5x=5

5x/5x=5/5x

x=1

5 0
3 years ago
Read 2 more answers
Find the sum: 4+(-11)
Elden [556K]

Answer:

-7

Step-by-step explanation:

4 + (-11)

=> {since, positive x negative = negative}

=> 4 - 11

=> -7

3 0
2 years ago
Read 2 more answers
Please help! please.
tamaranim1 [39]
A (-3, -1) 

You know this because QIII is in the bottom left corner and both numbers are negative

5 0
3 years ago
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Solve the equation 9x – 2 = 16.<br><br> A) 4<br><br> B) 32∕9<br><br> C) 2<br><br> D) 14∕9
sveta [45]

Answer:

C) 2

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
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