3 years ago

Solve by factorisation 2x2 + 3x - 20 = 0

Mathematics

1 answer:

Thepotemich [5.8K]3 years ago

7 0

(2x - 5) (x + 4).................

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Whats 92 divided by 2.7

Stells [14]

Answer:

34.074

Step-by-step explanation:

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3 years ago

Oliver had m dollars to spend on a backpack for the new school year. The expression below represents the amount of money he had

xxMikexx [17]

Answer:

Option A

Step-by-step explanation:

Y is the amount of back pack

The total amount is represented by m

If Y is the cost of back pack purchased by Oliver, then 0.7 Y is the tax applicable on the purchase of back pack

Hence, the remaining cost would be total amount with Oliver minus the cost of back pack and the tax applicable on the purchase of back pack

Remaining cost = m - (y + 0.07y)

Hence, option A is correct

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3 years ago

If parallelogram ABCD was reflected over the y-axis, reflected over the x-axis, and rotated 180°, where would point A' lie?

LuckyWell [14K]

D (-4 , -1)
relflected over x-axis= (4 , 1)
180 degrees= (-4 , -1)

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3 years ago

PLZ help me fast 2 mins left

jek_recluse [69]

Answer:

$\sqrt{-5}=i\sqrt{5}$

$\sqrt{-25}=5i$

Step-by-step explanation:

i is an imaginary unit, this means

$i^2=-1$

Rewrite -5 as $5\cdot (-1)=5\cdot i^2,$

then

$\sqrt{-5}=\sqrt{5i^2}=\sqrt{5}\cdot \sqrt{i^2}=\sqrt{5}\cdot i=i\sqrt{5}$

Rewrite -25 as $-25=25\cdot (-1)=25\cdot i^2,$

then

$\sqrt{-25}=\sqrt{25\cdot i^2}=\sqrt{25}\cdot \sqrt{i^2}=5\cdot i=5i$

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3 years ago

How do you find the area of a circle that has a radius of 4

Lisa [10]

Work is provided in the image attached.

Although you did not include units, I just used centimeters.

However, if there were no units, then just put your answer.

If you do not understand my work,

please ask me in the comments below.

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3 years ago

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