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lbvjy [14]
3 years ago
10

PLZ HELP I'm fr super confused I'll give BRAINLIEST plz show the work

Mathematics
2 answers:
marishachu [46]3 years ago
8 0

Answer:

First answer is 5 hours

Second answer is 7 weeks

First question explanation:

Make an equation to find out when the companies prices are equal

Let x be the number of hours, so we isolate that one

10 +5x = 7x

subtract 5x from both sides

10= 2x

5=x

Second question explanation:

Same as the first one, setting up an equation as follows:

let x be number of weeks

500-20x=150+30x

add 20x to both

500 = 150 + 50x

subtract 150 from both sides

350 = 50x

divide both sides by 50

7 = x

Vera_Pavlovna [14]3 years ago
4 0

Answer: After 6 hour for the first question

Step-by-step explanation: Cause ∣x+

1−x

2

​

∣=

2

​

(2x

2

−1)\Leftright∣cos\alp+sin\alp∣=

2

​

(2cos

2

\alp−1)

∣

N

2

c

o

s

(

\alp

−

π

4

)

∣

=

N

2

c

o

s

(

2

\alp

)

\Right

\alp

∈

[

0

;

π

4

]

∪

[

3

π

4

;

π

]

∣N

2

​

cos(\alp−

4

π

​

)∣=N

2

​

cos(2\alp)\Right\alp∈[0;

4

π

​

]∪[

4

3π

​

;π]

1)

\alp

∈

[

0

;

π

4

]

\alp∈[0;

4

π

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]

c

o

s

(

\alp

−

π

4

)

=

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(

2

\alp

)

…

cos(\alp−

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π

​

)=cos(2\alp)…

2.

\alp

∈

[

3

π

4

;

π

]

\alp∈[

4

3π

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;π]

−

c

o

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(

\alp

−

π

4

)

=

c

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(

2

\alp

)

…

−cos(\alp−

4

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​

)=cos(2\alp)…

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Figure how much percent she reads daily. Then add on till 7 until ur done... For example 7= 35% 14(days)= 70
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What is the value of 5a when a=7 ?
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...

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7 0
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Please try your best and show your work and I will give brainliest!
dimulka [17.4K]

Answer:

Part A: impossible

Part B: Either equal or blue

Part C: 9 green and 2 blue were added

Step-by-step explanation:

Part A:

The only colors included in this problem are red, blue, and green. There is no black colored pencil, therefore, it is impossible to get one from the box.

Part B:

I'm not sure what you're asking in this question, but I will give you the two choices. If it is before the additional 11 colored pencils are added to the box, the chance of drawing a red and the chance of drawing a blue will be equal, because both of them have 11 of each color. If it is after the additional 11 colored pencils are added to the box, then the chance of drawing a blue colored pencil will be greater than the chance of drawing a red colored pencil. After the 11 colored pencils are added, there are 13 blue and 11 red. The blue is greater.

Part C:

The least number of green colored pencils added has to be 9, because the chance of drawing a green pencil is now greater than the chance of drawing a red pencil. If we add 8 more green pencils, the likelihood would be the same. Therefore, the number of green colored pencils added has to be at least 9. If we have the last 2 colored pencils be blue, then there would be 11 red, 13 blue, and 12 green. This fits all the conditions, therefore, adding 9 green colored pencils and 2 blue colored pencils is the answer.

I hope this helps and please mark me as brainliest!

5 0
2 years ago
In a company, it takes 4 employees 4 days to complete a task. It would take 2 employees 8 days to complete the same task.
Triss [41]
The concept that can be used in order to answer this item is that of man-days. The total number of man-days required to do the job should always be constant. 

This can be illustrated by the givens above.
Scenario 1: 
     N1 = (4 employees)(4 days) = 16 man-days

Scenario 2:
    N2 = (2 employees)(8 days) = 16 man-days

The equation for determining the value of e is equal to,
     k = (d)(e)

The answer is the second choice. 
6 0
3 years ago
Read 2 more answers
PLease help me dont answer if u dont know
sdas [7]

Answer:

a_n=-8+(n-1)-7

Step-by-step explanation:

General arithmetic sequence formula: a_n=a_1+(n-1)d

where a_1 = first term, and d = common difference.

The first term is -8

And the common difference appears to be - 7 as 7 is subtracted to get to the next term. Ex. -8 - 7 = -15, -15 - 7 = - 22 and so on.

To get the explicit formula of the sequence we simply plug in the values of a1 and d the general arithmetic sequence formula

General formula: a_n=a_1+(n-1)d

We have a_1=-8 and d = -7

So the formula to find the nth term would be

a_n=-8+(n-1)-7

4 0
2 years ago
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