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2 years ago

Help me with this math multiple choice question

Mathematics

2 answers:

finlep [7]2 years ago

6 0

Answer:

D) (2,6)

Step-by-step explanation:

y - 2 = 2x ---------(i)

y = 4x - 2 --------(ii)

substitute y = 4x-2 in equation (i)

4x-2 - 2 = 2x

4x - 4 = 2x

4x - 2x = 4

2x = 4

x = 4/2

x = 2

Now plug in the x value in equation (ii)

y = 4*2 - 2

y = 8-2

y = 6

vaieri [72.5K]2 years ago

3 0

Answer: D

Step-by-step explanation: There’s a cool website called math-way all you need to do is put in the question correctly and put in how you want it solved. For example, if you want it graphed you put in Graph. PS. It’s free!!

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Helos answee please im dumb asap

exis [7]

Answer:

114

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

Two supplementary angles differ by 34. find the angles..

antiseptic1488 [7]

Answer:

107°

73°

Step-by-step explanation:

Let the two supplementary angles be x° and y°.

x + y = 180....(1)

Since, supplementary angles differ by 34.

Therefore,

x - y = 34....(2)

Adding equations (1) & (2)

x + y = 180

x - y = 34

_________

2x = 214

x = 214/2

x = 107°

Plug x = 107 in equation (1)

107 + y = 180

y = 180- 107

y = 73°

3 0

2 years ago

Find the number which when divided by 4 and increased by 12 is the same as when it is divided by 3 and decreased by 5

MatroZZZ [7]

Step-by-step explanation:

Let's make the number we're finding to be $a$ . So, it says that it will be divided by 4 and then added by 12 if we want this in algebraic expression it will be $\frac{a}{4} +12\\$ . It's also telling us that that expression is the same thing as our number divided by 3 and subtracted by 5. If we want an expression out of it it well be $\frac{a}{3} -5\\$ . Since they are the same, we have the equation below.

$\frac{a}{4} +12 = \frac{a}{3} -5\\$

All we have to do now is to find $a$ .

$\frac{a}{4} +12 = \frac{a}{3} -5 \\ \frac{a +48}{4} = \frac{a -15}{3} \\ (3)(a +48) = (a - 15)(4) \\ 3a +144 = 4a -60 \\ (60 -3a) + 3a +144 = 4a -60 +(60 -3a) \\ a = 204$