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3 years ago

How do you solve the systems by substitution y=3x+1 and y=5x-3

1 answer:

4 0

**plug in the first equation into the y of the next.

3x + 1 = 5x - 3
-1 from both sides
3x = 5x -4
-5x from both sides
-2x = -4
divide both sides by negative 2

x= 2

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Your friend claims that it is possible to draw a right triangle where the cosine of either angle (theta) is exactly the same val

avanturin [10]

Answer:

B. No

$Cos \ \theta\neq Cos (90-\theta)\textdegree$

Step-by-step explanation:

-A right angle triangle has two complimentary acute angles and one right angle.

- $\theta$ is usually one of the acute angles and is equivalent to 90º minus it's complimentary acute angle.

-Complimentary angles add up to 90º.

#For complimentary angles:

$Sin \ \theta=Cos \ (90-\theta)\textdegree\\\\Cos \ \theta=Sin(90-\theta)\textdegree\\\\\therefore Cos \ \theta\neq Cos (90-\theta)\textdegree$

The two acute angles cannot have the same Cosine value.

Hence, she's not correct.

5 0

3 years ago

Harriet earns the same amount of money each day. Her gross pay at the end of 7 work days is 35h + 56 dollars. Which expression r

Alex_Xolod [135]

Answer:

Gross pay per days is 5h+8 dollars

Step-by-step explanation:

we are given

total gross pay =35h+56 dollars

total number of days =7

we know that

gross pay per day = ( total gross pay)/(total number of days)

we can plug values

gross pay per day is

$=\frac{35h+56}{7}$

we can simplify it

$=\frac{7(5h+8)}{7}$

$=5h+8$

7 0

3 years ago

Read 2 more answers

Solution <br> 2 > x/3 -1

Dmitry_Shevchenko [17]

Answer:

X < 9

Step-by-step explanation:

Add 1 to both sides

3 > x/3

multiply by 3 to get x by itself

9 > x

x < 9

6 0

3 years ago

Read 2 more answers

What is the simplified answer to 5/2

Yanka [14]

Maybe it the mixed number form. 2 1/2?

8 0

3 years ago

18 55 -101 196 55 18 22 X-22 57 88

choli [55]

Answer:

maybe a that's my answer

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3 years ago