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Dafna11 [192]
3 years ago
12

Use the substitution method to solve the system of equations.

Mathematics
1 answer:
d1i1m1o1n [39]3 years ago
5 0

Answer:

B

Step-by-step explanation:

3x + 4(x-1) = 10

3x+4x-4=10

7x-4=10

+4     +4

7x=14

/7   /7

x=2

y=(2)-1

y=1

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Given segment CE and point D that lies on CE, find CD if CE = 15, CD = 30 + 3x, and ED = 25 + 2x
klasskru [66]
CD+DE=CE
(30+3x)+(25+2x)=15
55+5x=15
x=-8
CD=30-24=6
5 0
3 years ago
Find the distance between (2,3) and (5,8)
Orlov [11]
Use pythagorean theorem
a^2+b^2=c^2

first find the difference of between the 2 points to find the legnth of the legs

distance between 2 and 5=3
distance between 3 and 8=5 so


3^2+5^2=c^2
9+25=c^2
34=c^2
√34=c

the ligit formula is
c= \sqrt{(x1-x2)^2+(y1-y2)^2}

6 0
3 years ago
3p + 4q = 22<br> 10p + 12 q = 68<br> What is p and what is q<br> (Similtaneous equations)
Rashid [163]

Answer:

q=4

p=2

Step-by-step explanation:

3p+2q=14

10p+6q=44

10(3p+2q=14)

3(10p+6q=44)

30p+20q=140-

30p+18q=132

2q=8

2q/2=8/2

q=4

3p+2*4=14

3p+8=14

3p=14-8

3p/3=6/3

p=2

hope this helps

7 0
3 years ago
Read 2 more answers
I have a quiz and I have no idea what to do plz help.
zimovet [89]

Answer:

its c!!!

Step-by-step explanation:

i love fractions

5 0
3 years ago
Read 2 more answers
Given the list of x's and y's what is the constant of proportionality. X- 5, 6, 7, 8, 9 Y- 30, 36, 42, 48, 54
Snezhnost [94]

Answer:

Constant of proportionality(X:Y) = 1:6

Step-by-step explanation:

Given:

X- 5, 6, 7, 8, 9

Y- 30, 36, 42, 48, 54

Find:

Constant of proportionality

Computation:

X/Y = 5/30 = 6/36 = 7/42 = 8/48 = 9/54

X/Y = 1/6 = 1/6 = 1/6 = 1/6 = 1/6

So;

Constant of proportionality(X:Y) = 1:6

7 0
4 years ago
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