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1 year ago

Daniel wants to do 208 practice problems to prepare for an exam. If he wants to do 8 problems a day, how many days

Mathematics

1 answer:

vovangra [49]1 year ago

3 0

Answer:

8 problems per day for 12 of the days and 9 problems per day for 24 of the days

Step-by-step explanation:

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PL HELP ME GIVING 100

il63 [147K]

Answer:

C ≤ 11

Step-by-step explanation:

c − 5.5 + 5.5 ≤ 5.5 + 5.5

add 5.5 to both sides

8 0

3 years ago

Read 2 more answers

Can somebody plz help answer all these questions correctly!! (Only if u know or remember how to do this) lol thanks!!!

kvasek [131]

Answer:

17. 42

18. 12

19. 12

20. 12

Step-by-step explanation:

Simply substitute the given values into the variables. So if m = 6 and n = 2:

7m = 7(6) = 42

6n = 6(2) = 12

mn = (6)(2) = 12

3m - 6 = 3(6) - 6 = 18 - 6 = 12

6 0

2 years ago

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the frame of a picture is 28 cm by 32 cm outside and is of uniform width.What is the width of the frame if 192 cm2 of the pictur

natita [175]

Answer:

The width of the frame is equal to $8\ cm$

Step-by-step explanation:

Let

x-------> the width of the frame picture

we know that

$(28-2x)(32-2x)=192$

$896-56x-64x+4x^{2} =192$

$4x^{2}-120x+704=0$

Simplify

$x^{2}-30x+176=0$

The formula to solve a quadratic equation of the form $ax^{2} +bx+c=0$ is equal to

$x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$x^{2}-30x+176=0$

$a=1\\b=-30\\c=176$

substitute in the formula

$x=\frac{30(+/-)\sqrt{(-30)^{2}-4(1)(176)}} {2(1)}$

$x=\frac{30(+/-)\sqrt{196}} {2}$

$x=\frac{30(+/-)14} {2}$

$x=\frac{30+14} {2}=22\ cm$ ----> this solution is not logic

$x=\frac{30-14} {2}=8\ cm$

The width of the frame is equal to $8\ cm$

8 0

3 years ago

Piecewise function help

Vlad1618 [11]

Nothing is mentioned...how am I supposed to help you?

3 0

3 years ago

Solve for k: -2k = k - 7 - 8 and explain in number form

Kamila [148]

Answer:

k = 5

Step-by-step explanation:

-2k = k - 7 - 8

Combine like terms

-2k = k - 15

add 15 to both sides

-2k + 15 = k

Add 2k to both sides

15 = 3k

Divide both sides by 3

k=5

Hope this helps!

7 0

3 years ago