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k0ka [10]
3 years ago
7

PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!!

Mathematics
1 answer:
jenyasd209 [6]3 years ago
7 0

Answer:

x= -1/3

y= -3 1/3

Step-by-step explanation:

Make both of them into y=Mx+b form

y=-x-3

y=(-x-7)/2

Substitute the x-3 in the first equation for the y in the second one.

x-3=(-x-7)/2

2x-6=-x-7

3x=-1

x=-1/3

Now that we have x, we can solve for y.

y=-x-3

y=-1/3-3

y=-3 1/3

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Find the area of the triangle if the length is 22 and the height is 15
Ymorist [56]

Answer:

low 0.5 *the length of the base * the height

Step-by-step explanation:

0.5*22*15=165

5 0
2 years ago
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The price of a watch was increased by 20% to £144. What was the price before the increase
MAXImum [283]

Answer:

120 pounds

Step-by-step explanation:

Since the new cost is 144 pounds and this is 20% more,  this is 120% of the original price. Remember 100+20 = 120. To find the original price set up a proportion with these values:

Solve for the original price by cross multiplying numerator with denominator.

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3 years ago
Antonio has 15 pennies in his pocket 5/8 of his quoins our pennies how many coins does Antonio having his pocket
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4 0
3 years ago
A room with poor air quality has a particle concentration of 80 units. ​A fan removes 50% of the remaining particles each hour.
Eddi Din [679]

Answer:

20 units

Step-by-step explanation:

Initial particle concentration = 80 units

Particles removed each hour = 50% of the remaining particles

To find:

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Solution:

Particles removed in 1 hour = 50% of remaining particles

i.e. Particles removed in 1 hour = 50% of initial concentration

Particles removed in 1 hour = 50% of 80 = 40

Particles removed in next 1 hour = 50% of remaining particles

i.e. Particles removed in next 1 hour = 50% of concentration after 1 hour

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Therefore, particle concentration after 2 hours = Initial concentration - Total particle concentration removed in 2 hours

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I need help with this question. Please help :D
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-0.01

Step-by-step explanation:

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