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Komok [63]
3 years ago
8

4.

Mathematics
2 answers:
Lana71 [14]3 years ago
8 0

Answer:

A.

Step-by-step explanation:

If you substitute each answer that is below 18, you will get an answer that is below 30 every time.

Phoenix [80]3 years ago
4 0

Answer: A

Step-by-step explanation:

Correct me if i am wrong

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Y = −3x <br> x + y = −4<br> Solution system
Verizon [17]

Answer:

Step-by-step explanation:

Y = - 3x. Equation 1

x + y = - 4 equation 2

Putting value of y

x + (-3x) = - 4

x - 3x = - 4

-2x = - 4

x = - 4/-2 = 2

Putting value of x in the equation 1

Y = - 3(2)

Y = - 6

7 0
3 years ago
I was reading a book of 560 pages. On Sunday, I was able to finish 1/4pages of the book. How many pages do I read on Sunday?
kolbaska11 [484]

Answer:

140

Step-by-step explanation:

560. 1

____. ÷. ______

1. 4

Cross out the numbers that are divisible

560/4 = 140

5 0
2 years ago
Pq lies on plane PQR. Point S lies on plane PQR. qs does not lie on plane PQR. Which two statements contradict each other?
Vinil7 [7]

Answer c: 2 and 3


Of course Q is on plane PQR. If S is as well, then QS is as well.



8 0
3 years ago
The area of the trapezium is four times the area of the parallelogram. Work out the value of x
Rina8888 [55]

Answer:

2.5cm

Step-by-step explanation:

area of trapezium = 4 * area of parallelogram

1/2(a+b)*h=4* bh

1/2(5+11)*4= 4* 3.2x

8*4=4*3.2x

8/3.2=x

2.5cm=x

3 0
3 years ago
A human heart beats an average of 80 beats per minute.How many beats is this in an hour?express your answer in scientific notati
nlexa [21]

Answer:

4,800

Step-by-step explanation:

Sorry I don't know how to explain it scientifically but I know how to do the calculations

1) Theres 60 minutes in an hour

2) 80x60= 4,800 beats

4 0
3 years ago
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