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allochka39001 [22]
3 years ago
11

Please help me !

Mathematics
2 answers:
Alik [6]3 years ago
8 0
Solve for x in the second equation first

kumpel [21]3 years ago
8 0

Answer:

Solve for x in the second equation.

Step-by-step explanation:

To solve a system of equations by substition you have to solve one of the equations for X or Y and then substitute that value on the X of the other equation, if you want to avoid fractions, you can use the x of the secon equation, like this:

6x+18y=24\\6x=24-18y\\x=\frac{24-18y}{6} \\x=4-3y

So by solving X for the second equation you avoided fractions when substituting the value for X on the first equation.

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What is the answer 5x² – 33x - 14 = 0​
KatRina [158]

Answer:

X=-2/5,7

Step-by-step explanation:

5x² – 33x - 14 = 0​

5x^2-(35-2)x-14=0

5x^2-35x+2x-14=0

5x(x-7)+2(x-7)=0

(5x+2)(x-7)=0

X=-2/5,7

so the value of X is -2/5,7

8 0
3 years ago
Y = -1/2x +4<br> x + 2y = -8
Flauer [41]

Answer:

Step-by-step explanation:

b

3 0
3 years ago
Read 2 more answers
Help me to do this question ​
zysi [14]

Answer:

c1) adjacent

c2) not adjacent

c3) adjacent

c4) not adjacent

c5) adjacent

c6) not adjacent

d1) 20°

Complement: 90° - 20° = 80°

Supplement: 180° - 20° = 160°

d2) 77°

Complement: 90° - 77° = 13°

Supplement: 180° - 77° = 103°

d3) 101°

Complement: doesn't have a complement.

Supplement: 180° - 101° = 79°

d4) 90°

Complement: 90° - 90° = 0°

Supplement: 180° - 90° = 90°

d5) 96°

Complement: doesn't have a complement

Supplement: 180° - 96° = 84°

d6) x

Complement: 90° - x

Supplement: 180° - x

d7) y

Complement: 90° - y

Supplement: 180° - y

7 0
3 years ago
I don't understand this i need help as fast as possible please
Tanzania [10]
1.89×4=7.56 7×2.49= 17.43
17.43+7.56=24.99
so d is your answer
4 0
3 years ago
Read 2 more answers
A person drives a car at a constant speed for 4 hours and 30 minutes, traveling 288 miles. Find the speed of the car in miles pe
JulsSmile [24]
The speed of the car is 64 mph
8 0
3 years ago
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