All categories

3 years ago

Solve using substitution.

1 answer:

4 0

You're right-when you try to do a substitution you get nonsense. Think about it-if you rewrite y - x = 8 to be y = x + 8, and the other equation is y = x + 2, there are NO SOLUTIONS that would satisfy (x,y) for BOTH equations.
The second problem you can just add so that you eliminate 5x, and you get -2y = 12; y = -6; replace back into the equation:
-5x + -6= 4
-5x = 10
X = -2, then check your work

You might be interested in

Measure of Angle 1 is 5x. Measure of Angle 3 is x-24. What is the measure of Angle 1?

olga55 [171]

Answer:

The answer to your question is: 30°

Step-by-step explanation:

Data

m∠ 1 = 5x

m∠ 3 = x - 24

Process

m ∠ 1 = m ∠ 3 because they are vertical angles

5x = x - 24

5x - x = 24

4x = 24

x = 24 / 4

x = 6

Angle 1 = 5(6)

= 30°

4 0

3 years ago

HELP ME PLZZZZZ double a, multiply b by the result, then subtract c from what you have

riadik2000 [5.3K]

Answer:

2a(b) - c

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

In ΔCDE, \overline{CE}

abruzzese [7]

Answer:

$m\angle CDE=14^o$

Step-by-step explanation:

we know that

An exterior angle of a triangle is equal to the sum of the opposite interior angles.

see the attached figure to better understand the problem

∠DEF=∠ECD+∠CDE

substitute the given values

$(4x+5)^o=(x+9)^o+(x+8)^o$

solve for x

Combine like terms

$(4x+5)^o=(2x+17)^o$

Group terms

$4x-2x=17-5$

$2x=12$

$x=6$

Find the measure of angle CDE

$m\angle CDE=(x+8)^o$

substitute the value of x

$m\angle CDE=(6+8)=14^o$

8 0

3 years ago

a. (5 points) Let’s assume that over the course of a day you put up a total amount of $1000 in bets. Now, you know that you don’

FrozenT [24]

So umm ahh I won't tell answer but I'll teach HOW to solve it :>

Sooo........

Just ask your teacher that is the best best best helpful hint (IT IS ACTUALLY)

8 0

3 years ago

Question 7 ❤️ this is almost due and I need some help with question 7! Thanks

nignag [31]

5. a.) 8.73/450x100=1.94
b.) 8.73/450≈0.02
c.) 450/8.73x25≈1289
7 a.) 622/12≈52km per hour
b.) 622/0.5=1244 km per hour ( that's .......impossible...)
Those are your answers.

3 0

4 years ago

Read 2 more answers