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3 years ago

Out of 30 questions Ahmad answers 12 of them incorrectly.what percent of the questions did he correctly

Mathematics

2 answers:

Dimas [21]3 years ago

8 0

40% 40/100 .4 divide 14 by 30

12345 [234]3 years ago

5 0

(12/30)x100 is 40%
This is percent of incorrect answers. The total percent must be 100% so subtract 100-40=60%.
60% answers were answered correctly.

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What is the answer to this problem?

Nastasia [14]

Answer is c because if count the sides of how many spaces are there

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3 years ago

Nadia is a stockbroker. She earns 11% commission each week. Last week, she sold 7,200 worth of stocks. How much did she make las

elena55 [62]

Answer:

She made 792 dollars that week. I'm assuming it is just asking for the yearly commission she made. That would be 41,184 dollars a year.

Step-by-step explanation:

7200 x 0.11 = 792 Weekly

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792 x 52 = 41184 Yearly (if that's what it's asking for)

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3 years ago

X3−2=10 help plz i need help

Norma-Jean [14]

X=4
This is because
(4)3-2=10
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This makes the statement true!
Hope this helps have a good day!

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3 years ago

Plz need help on this

Ipatiy [6.2K]

Oh my umm I don’t know sorry

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3 years ago

What is the vertex of this parabola? y= 2x² + 4x +5

uranmaximum [27]

Answer:

vertex = (- 1, 3 )

Step-by-step explanation:

Given a parabola in standard form

y = ax² + bx + c ( a ≠ 0 )

Then the x- coordinate of the vertex is

$x_{vertex}$ = - $\frac{b}{2a}$

y = 2x² + 4x + 5 ← is in standard form

with a = 2, b = 4, then

$x_{vertex}$ = - $\frac{4}{4}$ = - 1

Substitute x = - 1 into the equation for corresponding value of y, that is

y = 2(- 1)² + 4(- 1) + 5 = 2 - 4 + 5 = 3

vertex = (- 1, 3 )

6 0

3 years ago