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MariettaO [177]
2 years ago
13

PLEASE HELP WILL MARK BRAINLIEST

Mathematics
2 answers:
ipn [44]2 years ago
6 0

Answer:

{ \rm{y = x + 4 -  -  - (a)}} \\ { \rm{y = 3x - 4 -  -  - (b)}}

equate equation a and equation b:

{ \rm{(a) = (b)}} \\ { \rm{x + 4 = 3x - 4}} \\ \\  { \rm{3x - x = 4 + 4}} \\  \\ { \rm{2x = 8}} \\  \\ { \boxed{ \rm{x = 4}}}

• find the value of y:

{ \rm{from \: (a) : }} \\  \\ { \rm{y = x + 4}} \\  \\ { \rm{y = 4 + 4}} \\  \\ { \boxed{ \rm{y = 8}}}

n200080 [17]2 years ago
4 0

Answer: (4,8)

Step-by-step explanation:

(8) = (4) + 4

8 = 8

TRUE

(8) = 3(4) - 4

8 = 12 -4

8=8

TRUE

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how much must you deposit in an account that pays 8% interest,compounded monthly to have a balance of $1000 after three years?​
NNADVOKAT [17]
<h3>Answer:  787.25 dollars</h3>

=============================

Work Shown:

A = final amount after t years = 1000

P = initial deposit = unknown

r = interest rate in decimal form = 0.08

n = compounding frequency = 12

t = number of years = 3

-----

A = P*(1+r/n)^(n*t) is the compound interest formula

1000 = P*(1+0.08/12)^(12*3)

1000 = P*1.27023705162066

1.27023705162066P = 1000

P = 1000/1.27023705162066

P = 787.254629932364

P = 787.25 rounding to the nearest penny

----

note: this assumes that the interest rate stays at 8% the entire three year period; also, you cannot withdraw any money from the account during this time period.

5 0
3 years ago
Is y=150x proportional?
daser333 [38]

Answer:

yes

Step-by-step explanation:

A proportional equation is of the form

y = kx where k is the constant of proportionality

y = 150x is proportional

5 0
3 years ago
Read 2 more answers
What is the domain of the absolute value function below?
vovikov84 [41]
The domain is all real numbers. (-infinity, infinity)
You can put any real number x value into the function.
5 0
3 years ago
Read 2 more answers
14570.7 to 3 significant figures​
NemiM [27]

Answer:

what

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
Sonya drops a marble while standing on a deck 7 7/8 feet above the ground. The marble falls 4 1/4 feta from Sonya's hand to the
Greeley [361]

Answer:

12\dfrac{1}{8}\ feet

Step-by-step explanation:

Sonya drops a marble while standing on a deck 7 \dfrac{7}{8} feet above the ground.

The marble falls 4 \dfrac{1}{4} feet from Sonya's hand to the deck, and then rolls and falls to the ground.

So, the ball falls 4 \dfrac{1}{4} feet from Sonya's hand to the deck  and 7 \dfrac{7}{8} from the deck to the ground, in total

4\dfrac{1}{4}+7\dfrac{7}{8}=4\dfrac{2}{8}+7\dfrac{7}{8}=(4+7)+\dfrac{2+7}{8}=11+\dfrac{9}{8}=11+1\dfrac{1}{8}=12\dfrac{1}{8}\ feet

8 0
2 years ago
Read 2 more answers
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