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Mkey [24]
4 years ago
10

2x-y=7 3x+y=8 what is the answer to this problem

Mathematics
1 answer:
kakasveta [241]4 years ago
3 0

Answer:

x is equal to 3 and y is equal to mines1

Step-by-step explanation:

add both together and you will get

5x = 15

and then it is easy to solve

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City A is due north of City B. Find the distance between City A ​(36 degrees 6 prime36°6′ north​ latitude) and City B ​(21 degre
vitfil [10]

Answer:

distance = 994.75 miles

Step-by-step explanation:

given data

City A = 36°6′ = 36° + \frac{6}{60} = 36.1° = 36.1° × \frac{\pi}{180} = 0.6297 rad

City B = 21°42′ = 21° + \frac{42}{60} = 21.7° = 21.7° × \frac{\pi}{180} = 0.3785 rad

multiply by π/180 to convert the degree to radian

radius of Earth = 3960 miles

to find out

distance between City A and City B

solution

we first get here central angle between A and B city is

central angle between A and B city = 0.6297 rad - 0.3785 rad

and

now by arc length so  we get distance

distance = 3960 miles × (0.6297 rad - 0.3785 rad )

distance = 994.75 miles

5 0
3 years ago
I rlly need help! pleas help quick!
Serggg [28]

Answer:

2^9 or 512

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
What is the sum of 9/10+8/100
ArbitrLikvidat [17]
9/10 + 8/100

9/10 + 2×4/25×4

Common denominator is 50.

9/10 + 2/25.

5×9/5×10 + 2×2/2×25

45/50 + 4/50

= 49/50
6 0
3 years ago
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A recipe calls for the following spices: 18 teaspoon of turmeric, 18 teaspoon of ginger, and 14 teaspoon of cumin. What is the t
Sphinxa [80]

Answer:

50 total

Step-by-step explanation:

when it's asking for a total you add the numbers together, and whatever number you get is your answer :)

sorry if it's wronggg :( !!

7 0
3 years ago
Which of the expressions is rational? 25 + 2 7 − 2 64 + 45
Levart [38]

Answer:

All of the expressions

Step-by-step explanation:

A rational number is one that can be written as a ratio, or a number with a terminating decimal.

All of the expressions are whole numbers, so they are all rational.

4 0
3 years ago
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