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djyliett [7]
3 years ago
5

Can somebody help me. i don't know if these are right or wrong. If they're wrong can you please correct me? appreciate it​

Mathematics
2 answers:
Alenkinab [10]3 years ago
8 0
You wrote 35300 instead of 45300 for question 5.
notsponge [240]3 years ago
3 0

Step-by-step explanation:

it is right

all are right

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-2x + 3y = 18. x = -y + 1
Bezzdna [24]

Answer:

D. X=-3, y=4

Step-by-step explanation:

-2x+3y=18 equation 1

x=-y+1 equation 2

-2(-y+1)+3y=18 replace x value of equation 2 into equation 1

2y-2+3y=18

5y=20

y=4

solve for x by replacing y value into either equation.

x=-y+1

x=-4+1

x=-3

8 0
3 years ago
starting from 1.4 miles away a car drives towards a speed check point and then passes it the car travels at a constant rate of 5
LenKa [72]

Answer: At t=0.015 hours when the car 0.6 miles from the check point.

Step-by-step explanation:

Since we have given that

Distance traveled by him towards a speed check point = 1.4 miles

Speed at which he is travelling = 52 miles per hour

Let the time taken by him be x

Since we have the equation

d=1.4-52t

where<em> </em><em>d</em><em> </em>denotes distance

and <em>t </em>denotes time.

If we have given that the car 0.6 miles from the check point.

So, we put the value of <em>d</em> in place of it .

0.6=1.4-52t\\\\0.6-1.4=-52t\\\\-0.8=-52t\\\\0.8=52t\\\\\frac{0.8}{52}=t\\\\0.015=t

So, at t=0.015 hours when the car 0.6 miles from the check point.

5 0
4 years ago
What is the square root of -1?
Natali [406]

If you work with real numbers then the square root of - 1 CANNOT be defined.

If you work with complex numbers then the square root of - 1 is equal to the imaginary unit(which is symbolized as i)

6 0
3 years ago
Read 2 more answers
I NEED HELP!!
nirvana33 [79]
F(x) = 2x + 1
f(3) = 2(3) + 1 = 6 + 1 = 7
g(x) = 3x + 2
g(2) = 3(2) + 2 = 6 + 2 = 8
f(3) ÷ g(2) = ⅞
4 0
3 years ago
tom has been given 35 chores to complete today. this morning he finished 7 of them. how many chores does he now have left to do?
GaryK [48]
All you have to is subtract 35-7=28
and you get 28 chores left
3 0
4 years ago
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