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Arturiano [62]
3 years ago
6

Find (3 × 10^4) + (7 × 10^2).

Mathematics
1 answer:
blsea [12.9K]3 years ago
7 0
The answer is  option "B"
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Please Help FAST
Aneli [31]

Answer:

Step-by-step explanation:

1) 2x -y = 1 -------1

3x - y = -6 ------2

Subtract eqn 2 from eqn 1

-x = 1--6 = 7

x = -7

Put x= -7 in eqn 1

2*-7-y = 1

-14-y = 1

- y = 15

y = -15

2) 4x +2y = 10------1

y = 4x + 2--------2

Put eqn 2 in eqn 1

4x + 2 ( 4x+ 2) = 10

4x + 8x + 4 = 10

12x = 6

x = 6/12 = 1/2

Put x = 1/2 in eqn 2

y = 4* 1/2 + 2= 2 + 2

= 4

3) 6x - y = 2------1

y = 3x + 4---------2

Put eqn 2 in eqn 1

6x - (3x +4) = 2

6x - 3x - 4 = 2

3x = 6

x = 2

y = 3*2 + 4 = 6 + 4

= 10

6 0
3 years ago
What is 1000 times 20
PIT_PIT [208]
The answer is 20,000
3 0
3 years ago
Read 2 more answers
Which is one way to check 102÷6=17 A.105÷10=10.5 B.17÷6=102 C.100÷5=20 D.100×5=500
Andru [333]
Hello!

The correct answer choice should be B. but the sign should be a multiplication sign...

Hope this helps! ☺♥
8 0
3 years ago
HELP ASAP PLEASE I HAVE TO TURN THIS IN SOON
Rom4ik [11]

Answer:

B

Step-by-step explanation:

It has a slope of -1/4

and it's y intercept is 2

y = -1/4x + 2  

7 0
2 years ago
Try this please, it's about arcs and angles and I'm just not sure how to do it. Thanks!
Nataly_w [17]
Check the picture below.

the segment LOJ is a diameter, and therefore the arcLCJ made by that diameter will have a central angle of 180°.

that simply means that the arcLC is 180 - 94, or 86°.

the ∡LJC is an inscribed angle that is intercepting the arcLC, and therefore, by the inscribed angle theorem, it'll be half of arcLC.

3 0
3 years ago
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