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4 years ago

6x + 5y = 82 2x + 5y = 54

Mathematics

2 answers:

fredd [130]4 years ago

6 0

Answer:X=7 and Y=8

Step-by-step explanation:

1.Q

6*7=42

5*8=40

42+40=82

2.Q

2*7=14

5*8=40

14+40=54

vovikov84 [41]4 years ago

4 0

Answer:

A) 6x + 5y = 82

B) 2x + 5y = 54 We'll multiply equation B) by -1

B) -2x -5y = -54 Then we'll add this to A)

A) 6x + 5y = 82

4x = 28

x = 7

y = 8

Step-by-step explanation:

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Triangle DEF has sides with lengths of 6, 11, and 13 units. Determine whether this triangle is a right triangle. Show all work n

mario62 [17]

Answer:

Triangle DEF is not a right triangle ; possible lengths are 20 & 15

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3 years ago

PLEASE HELP ASAP!!! I NEED CORRECT ANSWERS ONLY PLEASE!!!

aleksley [76]

The length of PR is 4.4 units.

Explanation:

It is given that the length of the hypotenuse is 10 units.

Also, the angle of R is 64°

To find the length of PR, we shall use the cosine formula,

$\cos \theta=\frac{a d j}{h y p}$

Here, $\theta=64$ , adj = PR and hyp = 10

Substituting these values in the formula, we get,

$\cos 64=\frac{P R}{10}$

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4 years ago