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liq [111]
3 years ago
15

Which ordered pair makes the equation true 2x - 5y = -10

Mathematics
1 answer:
tino4ka555 [31]3 years ago
7 0

With only one equation and no answer choices, there are an infinite number of possible values for x and y to make the equation true.

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Tammy made $234 for 18 hours of work.
Nadya [2.5K]

Answer:

8 hours of work

Step-by-step explanation:

$234 ÷ 18 = $13 an hour

$104 ÷ 13 = 8 hours of work

6 0
3 years ago
Mrs smith invests £30,000 (some in a 5% account, some in an 8% account). After the year shes earned £2100. How much did she put
mixer [17]

Answer:

She deposited £10,000 in the 5% yield account and deposited £20,000 in the 8% yield account

Step-by-step explanation:

Let the amount she put in each account be £x and £y respectively

Total amount deposited is ;

x + y = 30,000 ••••••(i)

Now, let’s look at the earnings:

in the £x , amount earned would be;

5/100 * x = 5x/100

For the £y, amount earned would be;

8/100 * y = 8y/100

Adding both gives the total which is £2,1000

5x/100 + 8y/100 = 2,100

Multiply through by 100

5x + 8y = 210,000 ••••••••(ii)

From the first equation, we know that

x = 30,000 -y

Let’s put this into the second

5(30,000-y) + 8y = 210,000

150,000-5y + 8y = 210,000

3y = 210,000 -150,0000

3y = 60,000

y = 60,000/3

y = £20,000

So mathematically;

x = 30,000-y

x = 30,000 -20,000

x = £10,000

7 0
3 years ago
A fathom is 6 feet how many feet deep is water that is 2 1/2 fathoms
Travka [436]
1 fathom = 6 feet

2 1/2 fathoms = x feet

2 1/2 fathoms • 6 feet = x feet

x = 15

2 1/2 fathoms = 15 feet
5 0
3 years ago
Read 2 more answers
A dog eats 7 cans of dog food in 3 days at this rate how many cans of food does the dog eat in 3+ d days
Aneli [31]
The dog will eat > 3 cans in 3+ days
4 0
3 years ago
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Find the difference 726-477=
Tanzania [10]
Its 249 because the difference 726-447 is 249
7 0
3 years ago
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