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1 year ago

!!!!Please help!!! I am dying!!

Mathematics

1 answer:

stellarik [79]1 year ago

6 0

Answer:

Therefore (x,y)=(3,7)

Step-by-step explanation:

put the second equation into the first

x+4=3x-2

x-3x=-2-4

-2x=-6

x=3

plug x=3 into the second equation

y=3+4=7

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Please HELP! BEEN ASKIN FOR 2 HOURS, PLEASE HELP, I WILL MARK YOU AS BRAINLIEST! PLEASE! HELP!

Alex787 [66]

Answer:

A: 30 m

B: 14 boxes

C: $596.40

D: $477.12

Step-by-step explanation:

A: 6*4.2 = 25.2. 3.2*1.5 = 4.8. 25.2 + 4.8 = 30.

B: 30/2.15 = 13.95, which rounds to 14.

C: 14*42.60 = $596.40

D: 20% off 100% = 80%, which is equal to 0.8. 596.40*.8 = $477.12.

Hope it helps you!! :)

5 0

3 years ago

How do i find all the missing angles, a b c d e I HAVE TO TURN IT IN SOON AA

castortr0y [4]

Step-by-step explanation:

for a

a+,38°=90°{ angle at circumference through center is 90°}
a=90-38
a=52°

for e

e=38°{base angle of isosceles triangle r equal}

for d

38°+e+d=180°{sum of angle of triangle}
d=180-76
d=104°

for. c

c+d=180°{straight angle}
c=180-104°
c=76°

for b

a+b+c=180°{sum of angle of triangle}
b=180-128
b=52°

hope it helps.

<h2>stay safe healthy and happy.</h2>

4 0

3 years ago

Maya bought 3 CDs that were each the same price. Including sales tax, she paid a total of $ 47.70 . Each CD had a tax of $ 1.10

Leni [432]

47.70- 3.30=44.40

44.40/ 3=14.80

each cd cost 14.80

5 0

4 years ago

I will mark Brainliest please help

Marizza181 [45]

Answer:

f(x) = 2

Step-by-step explanation:

f(x) represents a linear function since it had the same first differences while the "x" values are evenly space out (which we know could happen only if the function is linear). Now that we determined that the function is linear we have to write the function as an expression.

We know that any linear function has a form of f(x) = mx + b, where "m" is the slope and "b" is the y intercept (y value when x is equal to 0).

As I already mentioned the b will be equal tp the "y" intersect which is equal to the "y" value when x is equal to zero. Luckily in our table they did tell us what will be the "y" value when x is equal to zero, and it is 2. So now we know b = 2.

Then we have have to find the slope which can be found by using the following formula.....

$m = \frac{y_{2} - y_{1} }{x_{2} - x_{1} }$

Now we have to choose two different points from table and let the one that has bigger x value be represented as $(x_{2} , y_{2} )$ and the other one will be represented as $(x_{1}, y_{1} )$ . In our case I choose the points (2,2) and (1,2). Now if we represent them as what I mentioned earlier we can substitute their values into the equation that we ca use to find the slope. You should obtain the following.....