3 years ago

Help! do as many as you want, and if you can, show you work.

1 answer:

3 0

Give them brainlest to give someone brainlest you need two people to answer your question so now that I commented you can now give them just wait for a while :)

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A school buys 200 calculators at a special price. x of them were scientific calculators at R89 a piece and the rest were financi

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Let the number of financial calculators purchased = "y"

So, x + y = 200

200 - x = total number of financial calculators purchased

Hope I helped!! xx

5 0

3 years ago

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3∣a−b∣ if a=−9 and b=3

yKpoI14uk [10]

Answer:

36 because the absolute value of -9-3 is 12, and then 12 times 3 is 36

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2 years ago

Ax - b = c <br><br> Solve for x

7nadin3 [17]

ax - b = c

add b to each side

ax-b +b = c+b

ax = c+b

divide by a

ax/a = (c+b)/a

x = (c+b)/a

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3 years ago

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Y = 2x + 3 find f(0)

vichka [17]

If $y=2x+1$ then that means $f(x)=2x+3$ and when you plug in $x=0$ you get $f(0)=2\cdot0+3=\boxed{3}$ .

Hope this helps :)

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3 years ago

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Examine the quadratic equation 9x^2+12x +4= 0.

mestny [16]

Answer:

See answers and explanations

Step-by-step explanation:

A) Discriminant = b² - 4ac = (12)² - 4(9)(4) = 144 - 144 = 0

B) Since the discriminant is 0, this means the equation only has one root.

C) The root is real in this case since the discriminant is not negative. Otherwise, we would have two imaginary roots if it were (remember that complex roots come in pairs)

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3 years ago