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monitta
3 years ago
12

Plz Help me3x + 5y = 13 2x + y = 4​

Mathematics
1 answer:
Finger [1]3 years ago
7 0

Answer:

solve simultaneously

start by labeling them equation 1 and 2 then choose whether you want to make x or y the subject from knew of the equations

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he amount of money left in Alma’s bank account is expressed by the linear equation y = -27x + 577, where x represents the number
kow [346]

Answer:

After 16 weeks she will have 145 dollars left in her account.

Step-by-step explanation:

since 145 represents the amount of money in her account we will substitute that for "y" and solve for "x"

145=-27x+577

145-577=-27x

-432=-27x

-432/-27= -27x/-27

16=x


3 0
4 years ago
On a straight road, a car speeds up at a constant rate from rest to 20 m/s over a 5 second interval and a truck slows at a const
KIM [24]
To determine the total distance traveled by an object in constant speed, just multiply the speed by the time. So, for the car, the total distance traveled is,
                               distance by car = (20 m/s)(5s) = 100 m
For decelerating object, the distance traveled is,
                          distance = Vt - (at^2)/2
For the truck,
         distance by truck = (20 m/s)(10s) - (2m/s^2)((10s)^2)/2 = 100 m

Relatively, both have traveled the same distance. 
7 0
3 years ago
Can someone help with this problem
WARRIOR [948]
35+25=60
y=60


If you add the opposite side values of the triangle (not the one touching the y), you get the value of y). 35+25=y
This works because y+x= 180 and the three angles of a triangle add to 180.
4 0
3 years ago
Read 2 more answers
Evaluate 2 sin square 30 degree tan 60 degree - 3 cos square 60 degree sec square 30 degree
WARRIOR [948]

Answer:

  (√3)/2 -1 ≈ -0.133974596

Step-by-step explanation:

2sin²(30°)tan(60°) -3cos²(60°)sec²(30°)

= 2(1/2)²(√3) -3(1/2)²(2/√3)²

= 2(1/4)√3 -3(1/4)(4/3)

= (√3)/2 -1 ≈ -0.133974596

8 0
4 years ago
Complete the table
dimulka [17.4K]
It adds .8 for every 1 so it would be 6.2 and 7
8 0
3 years ago
Read 2 more answers
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