2 years ago

Help me on Algebra it may look easy but to me it is hard

Mathematics

1 answer:

Zina [86]2 years ago

8 0

It’s a 90 degree clockwise rotation as coordinates become (y,-x).

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Time left: 0:48:24 Question 11 of 50 What are the roots of the quadratic equation x2+3x+2?

alexgriva [62]

Answer:

-1 & -2

Step-by-step explanation:

x²+3x+2

x²+2x+x+2

(x²+2x)+(x+2)

x(x+2)+1(x+2)

(x+1)(x+2)

6 0

2 years ago

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If y varies directly as x and y = 21 when x = 5, find x when y = 42.

Lorico [155]

Answer: 10

Step-by-step explanation:

varies directly means: $\frac{y}{x} = k$

Step 1: solve for k ⇒ $\frac{21}{5} = k$

Step 2: plug in the given value and k to solve for the missing value: $\frac{42}{x} = \frac{21}{5}$

42(5) = 21(x)

$\frac{42(5)}{21} = \frac{21(x)}{21}$

2(5) = x

10 = x

5 0

2 years ago

At pizza hut, 9% of the pizzas made last night had extra cheese. if 27 pizzas has extra cheese, how many pizzas in all were made

True [87]

Answer: 300

You need to change 9% into a decimal so it would be 0.09

Then divide 27 ÷ 0.09 = 300

So 9% of 300 is 27

3 0

1 year ago

4(1 + 9x) i need assistance!

natta225 [31]

36x+4 is your answer

5 0

2 years ago

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What is 1/7 times 2/3

ziro4ka [17]

2/21or ethier 2/7 tht will be the answer maybe.

6 0

2 years ago