Pls help I’m really confused on this last question

The number of days the book was late is 14 days.

The given parameters include;

The following algebraic equation will be set to calculate the number of days the book was late before it was returned;

[tex]0.25(4) + (x - 4)0.3 = 40\\\\[/tex]

simplify the equation as follows;

[tex]1 + 0.3x - 1.2 = 4\\\\[/tex]

collect similar terms together;

[tex]0.3x = 4.2\\\\[/tex]

divide through by 0.3

[tex]x = \frac{4.2}{0.3} \\\\x = 14 \ days[/tex]

Thus, the number of days the book was late is 14 days.

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Find how many days late was her book

The total days late is 14 days

charges per day for first 4 days = $0.25

charges per day for the remaining days = $0.30

Total amount Annika paid = $4.00

let x = number of days of the remaining days

Amount paid for first 4 days = $0.25 × 4

= $1

Amount paid for remaining days = 0.30 × x

= 0.30x

Total amount paid = Amount paid for first 4 days + amount paid for remaining days

4 = 1 + 0.30x

4 - 1 = 0.30x

3 = 0.30x

x = 3/0.30

x = 10 days

Total days late = 4 days + 10 days

= 14 days

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Answer:

angle 2 = 37

Step-by-step explanation:

180-143=37

Answer:

Y is less than or equal to -1, or negative infinity to -1

Step-by-step explanation:

The range is which y values are included. The line extends forever getting lower in y values, and the highest y value is -1. You can either write it as { y | y[tex]\leq[/tex] -1 } or ( -∞, -1]

Answer:

x = 67 degrees

Step-by-step explanation:

180 = 46 + x + x

180 = 46 + 2x

180 - 46 = (46 - 46) + 2x

134 = 2x

134/2 = 2x/2

x = 67

Answer:

x=67°

Step-by-step explanation:

Answer:

3(x+6)

Step-by-step explanation:

Parenthesis after a number typically means multiply, so 3 times the sum of an unspecified number (x), plus 6 would be 3 (x+6)

Answer:

640/20 is 32

hope it's helpful

When the number 640 is divided by the number 20, the result is 32.

To divide 640 by 20, we perform long division or use the concept of division as the inverse of multiplication. By dividing 640 by 20, we are essentially finding how many times 20 can be evenly divided into 640.

On Dividing 640 by 20 yields a quotient of 32. This means that 20 can be divided into 640 exactly 32 times, without any remainder.

Thus, 640 divided by 20 is equal to 32. In simpler terms, if we distribute 640 items into 20 groups, each group will contain 32 items.

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Answer:

[tex]y=\frac{8x}{1}-7\\[/tex]

Step-by-step explanation:

(1,1) and (2,9)

[tex]\frac{9-1}{2-1}[/tex] =[tex]\frac{8}{1\\}[/tex]

(2,9) and (x,y)

[tex]\frac{y-9}{x-2} =\frac{8}{1} \\\\1(y-9)=8(x-2)\\\\\frac{1y}{1}-\frac{9}{1}=\frac{8x}{1}-\frac{16}{1}\\\\y=\frac{8x}{1}-16+9\\y=\frac{8x}{1}-7[/tex]

Answer:

2 repeating digits

Answer:

0.000056

Step-by-step explanation:

[tex] \\ 6 \times {10}^{ - 5 } - 4 \times {10}^{ - 6} [/tex]

[tex] \\ \longrightarrow6 \times \frac{1}{ {10}^{5} } - 4 \times \frac{1}{ {10}^{6} } [/tex]

[tex] \\ \longmapsto6 \times \frac{1}{ 100000 } - 4 \times \frac{1}{1000000}[/tex]

[tex] \\ \longmapsto0.00006 - 0.000004[/tex]

[tex] \\ \longmapsto0.000056[/tex]

Answer:

86-9 = 77

77/7 = 11

|r-5| = 11

r = -6, 16

Step-by-step explanation:

7|r-5|+9=86

7|r-5|=86-9

7|r-5|=77

|r-5|=11

r-5=11 or r-5 = -11

r = 16

or

r = -6

Answer:

-1,0 and -11,0 because you already factored and solved.

i dont know i wish I could help.

Answer:

-2 to 2

Step-by-step explanation:

see there's the sign of absolute value around x

so even if we put a negative number in place of x we'll get a positive outcome.

for example,

|x| = 4

|x| = 3

and so on

so the actual domain of |x| reduces to => 0 to 4.

as you'll get the values of |x| in between 0 and 4 throughout -4 to 4.

where the smallest value is 0 and largest is 4.

for range,

I'll just put these smallest and largest values in place of x and solve for domain

y= |0| - 2

y = -2

y = |4| - 2

y= 4 - 2

y = 2

so, the range of the function becomes -2 to 2.

Answer:

a variable is an unknown number by the way the answer is 4 too.

3+x=7

-3 -3

______

x = 4

subtract 3 on both sides to get x (the variable) by itself.

Answer:

good morning here is your answer,

3+x=7

or, x= 7-3

or, x= 4

Answer:

3x+3+2x-8 = 180

5x-5 =180

x= 37

Step-by-step explanation:

mark me as brainliest ❤️

Step-by-step explanation:

[tex]\sf \ angles \ \ (3x+3) \ and \ \ (2x-8) \ adjacent \\\\ As \ \ we \ \ know \ \ the \ \ sum \ of \ adjacent \ \ angles \ is \ 180^{\circ} \\\\ then : \\\\ 3x+3+2x-8 =180 \\\\ 5x-5=180 \\\\ 5x=185 \\\\ \boldsymbol {\sf x=37 ^{\circ }}[/tex]

Answer:

Step-by-step explanation:

BC = AB = 7      That comes from B being the midpoint of AC Both sides of B must be equal.

BD = 11

CD = BD - BC =11 - 7 = 4

So The length of AD = 7 + 7 + 4 = 18

Answer:

Unicorn A is 300 years old

Unicorn B is 20 years old

Explanation:

15x + x = 320

16x = 320

x = 20

15 * 20 + 20 = 320

We have that Each unicorn is 20 ans 300 years receptively

[tex]A=300\\\\B=20[/tex]

From the Question we are told that

UNICORN A IS 15 TIMES OLDER THAN  UNICORN B.

THE SUM OF THEIR AGES  IS 320 YEARS.

Let

x=age of unicorn A

y=age of unicorn B

Therefore

[tex]x=15y....1\\\\\x+y=320.....2[/tex]

Sub (1) into 2

[tex](15y)+y=320\\\\y=20[/tex]

therefore

[tex]x=15(20)\\\\x=300[/tex]

In conclusion

Each unicorn is 20 ans 300 years receptively

[tex]A=300\\\\B=20[/tex]

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Answer:

true

Step-by-step explanation:

a^15 ÷ a^5 = a^10

a÷a = a

15- 5 =10

give brainliest please I need it to level up

Answer:

True

Step-by-step explanation:

Using the rule of exponents

[tex]\frac{a^{m} }{a^{n} }[/tex] = [tex]a^{(m-n)}[/tex] , then

[tex]\frac{a^{15} }{a^{5} }[/tex]

= [tex]a^{(15-5)}[/tex]

= [tex]a^{10}[/tex]

Answer:

always true

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

Post in a bit

Answer:

[tex]x=7[/tex]

Step-by-step explanation:

Hi there!

[tex]-2^2(-5x+10)=100[/tex]

Solve -2^2:

[tex]-4(-5x+10)=100[/tex]

Divide both sides by -4:

[tex]\displaystyle \frac{ -4(-5x+10)}{-4}=\frac{100}{-4} \\\\-5x+10=-25[/tex]

Subtract 10 from both sides:

[tex]-5x+10-10=-25-10\\-5x=-35[/tex]

Divide both sides by -5:

[tex]\displaystyle \frac{-5x}{-5} = \frac{-35}{-5} \\\\x=7[/tex]

Therefore, x = 7.

I hope this helps!

y + y + (3y - 8) =

= y + y + 3y - 8 = 5y - 8 ← the end

Answer: 5y-8

Step-by-step explanation: y+y+3y-8= 5y-8

Answer:

Range = 5

Mode = 7

Step-by-step explanation:

To find range we first need to find the highest number and the lowest number

3 , 4 , 4 , 7 , 7 ,7 ,7 7, 8

least number = 3

highest number = 8

now substract the lowest number from the highest to get the range

= 8-3

= 5

range = 5

Mode : the most common number in the list will be our mode

7 is our mode as it came 5 time in the list

Answer:

$33.64

Step-by-step explanation:

That's the outcome of the math

Answer:

put a dot on the knot after the 4 that represents 4.2 then place the dot at the knot right before 4 that represents the 3.8. each knot is moving up or down by 2.

Step-by-step explanation:

hopes this helps also branly please

We must create a number line and draw an arrow for each term of the sum.

The procedure is now described:

1) Create a number line with big marks for each unit and small marks for each tenth.

2) Draw an arrow from 0 to 4.2. (Blue arrow in the figure)

3) Create an arrow from 4.2 to 3.8. (Green arrow in the figure)

[tex]x = 4.2 + (-0.4)[/tex]

[tex]x = 3.8[/tex]

A step-by-step representation of the number line is presented in the figure attached below.

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Answer: 70

Step-by-step explanation: 6300/90=70 Brainliest please?

Answer:

2

Step-by-step explanation:

Taylor: x

Jim: x + 18

Andre: 2x

Sum: x + (x + 18) + 2x = 26 ↔ x = 2