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den301095 [7]
2 years ago
7

2x+3=15 x+y=6 work out the values of x and y

Mathematics
2 answers:
madam [21]2 years ago
5 0

Answer:

x=6 and y=0

Step-by-step explanation:

1. 15-3=12

2. 12÷2=6 6=x

3. 6-6=0 0=y

grin007 [14]2 years ago
5 0
Subtract 3 from 15 and positive 3, you’re left with 2x = 12. Now you divide both sides by 2 to get x alone. x=6 so y =0
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a car drives 50 kilometres east and then 40 kilometres due north. how far is the car from its starting point?
ozzi

Answer:

90 kilometres

Step-by-step explanation:

6 0
2 years ago
Solve for x. −5(x−4)=−30
Readme [11.4K]
Let's solve your equation step-by-step.<span><span>−<span>5<span>(<span>x−4</span>)</span></span></span>=<span>−<span>30

</span></span></span>Step 1: Simplify both sides of the equation.<span><span>−<span>5<span>(<span>x−4</span>)</span></span></span>=<span>−30</span></span>
<span>Simplify: (Show steps)</span><span><span><span>−<span>5x</span></span>+20</span>=<span>−<span>30

</span></span></span>Step 2: Subtract 20 from both sides.<span><span><span><span>−<span>5x</span></span>+20</span>−20</span>=<span><span>−30</span>−20</span></span><span><span>−<span>5x</span></span>=<span>−<span>50

</span></span></span>Step 3: Divide both sides by -5.<span><span><span>−<span>5x</span></span><span>−5</span></span>=<span><span>−50</span><span>−5</span></span></span><span>x=<span>10

</span></span>Answer:<span>x=<span>10</span></span>
8 0
2 years ago
Read 2 more answers
Solve for x in the equation p(m+qx)=rx+n
katrin [286]

p(m+qx)=rx+n\\\\\implies pm+pqx = rx+n\\\\\implies pqx-rx = n-pm\\\\\implies x(pq -r) = n-pm\\\\\implies x = \dfrac{n-pm}{pq-r}

6 0
2 years ago
Greenville County, South Carolina, has 461,299 adult residents, of which 59,969 are 65 years or older. A survey wants to contact
Salsk061 [2.6K]

The proportion would be the number of the sample (x) over the population size (n)

Here we have x = 59,969 and n= 461,299

P = x/n = 59969/461299

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5 0
3 years ago
Someone please help me answer this!!
suter [353]

Answer:

4 1/10

Step-by-step explanation:

4.1

= 4 + 1/10

= 4 1/10

Hope you understand!

6 0
2 years ago
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