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3 years ago

The expression 2d gives the grade that a student receives for d correct answers. What is the score for 10 correct answers?

Mathematics

1 answer:

Alex17521 [72]3 years ago

8 0

2 times 10 equals 20

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Help me answer these 2 questions!!!!!

inna [77]

The first one in x _> 12

The second one is x<24

Good luck!

3 0

3 years ago

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Select all of the equations that represent linear relationships. 5 + 2y = 13 y = 1/2x^2+7 y – 5 = 2(x – 1) y/2 = x + 7 x = –4

Luden [163]

Answer:

FIRST OPTION.

THIRD OPTION.

FOURTH OPTION.

FITH OPTION.

Step-by-step explanation:

The equation of the line in slope-intercept form is:

$y=mx+b$

Where m is the slope, b the y-intercept and the exponent of x is always 1 or 0.

Solve for y from the equations shown below:

$5+2y=13\\2y=8\\y=4$

(In this linear function the slope is 0)

$y-5=2(x-1)\\y=2x-2+5\\y=2x+3$

(It is a linear function)

$\frac{y}{2}=x+7\\ y=2(x+7)\\y=2x+14$

(It is a linear function)

Equation of the line whose slope is not defined:

$x=-4$

5 0

3 years ago

What is the 9the term of the sequence?

jeka57 [31]

Answer

A. 196,608

Step-by-step explanation:

-12/3 = -4

48 / -12 = -4 and -192 / 48 = -4

This is a geometric sequence with common ratio -4.

an = a1 r^(n -1) so:-

9th term (a9) = 3*(-4)^(9-1)

= 196,608

7 0

4 years ago

Read 2 more answers

Help with Geometric Functions please

aliina [53]

So
a. so 100-1/10 of 100 or 100-10=90
then second dose minus 10% or 90-9=81
third dose 81 minus 10%=81-8.1=72.9
fourth dose 72.9 minus 10% or 72.9-7.29=65.61

so after 4th dose only 65.61% are left

b. so to get it to 5% you do alot and find that it takes 27 tries to get the percent down to 5.2% and 28 doses to get it to 4.7%

5 0

3 years ago

A store buys a jacket for $20.00 and then sells it to customers for 80% more than that. What is the selling price of the jacket?

Elis [28]

Your answer would be 36.

Hope this helped!

8 0

4 years ago

Read 2 more answers