I just need some help in math. This problem specifically

The required percentage of the 30 intermediate-level questions is 20%.

Given that,
Practice questions for a textbook are marked with difficulty levels of easy, Intermediate, and difficult. 30 of the 149 practice questions are rated as intermediate, approximately what percentage of the questions are intermediate level is to be determined.

the percentage is the ratio of the composition of matter to the overall composition of matter multiplied by 100.

In mathematics, it deals with numbers of operations according to the statements. There are four major arithmetic operators, addition, subtraction, multiplication and division,

Here,
the required percentage of the intermediate difficult question,
= 30 / 149 * 100
≈ 0.20 * 100
≈ 20%

Thus, the required percentage of the 30 intermediate level question is 20%.

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Answer:

hope this helps you

have a great day

Answer:

The length of a wave is one way to measure its size. It's the distance between two neighboring waves' corresponding points, commonly measured in meters. The distance between two adjacent crests is used to calculate the wavelength of a transverse wave.

Step-by-step explanation:

:)

Answer:

2

Step-by-step explanation:

In an AP, Tn = a + (n - 1)d

T6 = a + 5d = 11

The first term = a = 1

∴ T6 = 1 + 5d = 11

5d = 11 - 1

5d = 10

∴ d = 2

I hope this will help you :-)

Answer:

[tex]x6 = 11 \\ x1 = 1 \\ x6 \: can \: be \: written \: as \: x6 = x1 + 5d \\ x6 = 1 + 5d \\ 11 = 1 + 5d \\ 10 = 5d \\ d = \frac{10}{5} \\ d = 2 \\ thank \: you[/tex]

Step-by-step explanation:

Since the integers are consecutive,

let the smaller one be x

then the larger will be x+1

Now their sum is -15

x+x+1=-15

2x=-15-1

2x=-16

x=-8

Therefore the smaller is -8 and the larger is -7

Now when one is added to the smaller integer it becomes -8+1=-7

If 2 is subtracted from the larger one it becomes -7-2=-9

their product therefore becomes -9×-7=63

Answer:

8 and 32

Step-by-step explanation:

let daughter's age be x then Meena's age is 4x

2 years ago daughter's age was x- 2 and Meena's age was 4x - 2

Meena was 5 times her daughter's age then , so

4x - 2 = 5(x - 2)

4x - 2 = 5x - 10 ( subtract 4x from both sides )

- 2 = x - 10 ( add 10 to both sides )

8 = x

Thus

daughter is 8 years and Meena is 4 × 8 = 32 years

Answer:

112 hours

Step-by-step explanation:

1 week = 7 days

2 weeks = 14 days

= 14 × 8

= 112 hours

Answer:

3

Step-by-step explanation:

12x+5(1)=41

12x=-5+41

12x=36

x=36/12

x=3

12(3)+5(1)=

36+5=41

In one hour Randy cleans at least 1/4 of the offices and in one hour Trey cleans at least 1/6 of the offices.

Working together they would clean at least 1/4 + 1/6 = 5/12 of the offices.

Let x be the greatest amount of time it would take them to clean the offices together. Then we can write the following equation:

5x/12=1

Answer:

29, 31, 33

Step-by-step explanation:

Answer:

25%

Step-by-step explanation:

125.00x = 93.75

x = 93.75 / 125 = 0.75

meaning that 93.75 is 75% of 125

and, therefore, the item was discounted 100 - 75 % = 25%

men are my favourite type of gender. They satisfy me so much, thank god.

Answer:

C. linear; y = –x – 2

Step-by-step explanation:

Answer:

Option A, linear; y = -x - 2

Step-by-step explanation:

Example-

x = 3

y = ?

? = -3 - 2 (add the negative number if in the case of subtracting a negative number)

? = -5

Answer:

x = 2

Step-by-step explanation:

Given

[tex]\frac{3(6x+8)}{4}[/tex] = 15 ( multiply both sides by 4 to clear the fraction )

3(6x + 8) = 60 ( divide both sides by 3 )

6x + 8 = 20 ( subtract 8 from both sides )

6x = 12 ( divide both sides by 6 )

x = 2

The value of x in the equation is 2

The equation given :

3(6x + 8) / 4 = 15

Multiply both sides by 4

3(6x + 8) = 15 × 4

3(6x + 8) = 60

Open the bracket

18x + 24 = 60

18x = 60 - 24

18x = 36

x = 36/18

x = 2

The value of x in the equation is 2

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Answer: WX = 4

Concept:

Here, we need to know the idea of segment addition postulate.

The Segment Addition Postulate states that given 2 points A and C, a third point B lies on the line segment AC if and only if the distances between the points satisfy the equation AB + BC = AC.

Solve:

Given information

VX = 18

VW = 14

Given expression deducted from the segment addition postulate

WX = VX - VW

Substitute values into the expression

WX = 18 - 14

Simplify by subtraction

WX = 4

Hope this helps!! :)

Please let me know if you have any questions

Answer:

[tex]162 {x}^{10} {y}^{4} {z}^{12} [/tex]

Step-by-step explanation:

[tex]2 {x}^{4} (9 {x}^{3} y^{2} {z}^{6} {)}^{2} [/tex]

➡️[tex] {9}^{2} \times ( {x}^{3} {)}^{2} \times ( {y}^{2} {)}^{2} \times ( {z}^{6} {)}^{2} [/tex]

➡️[tex]162 {x}^{4} \times {x}^{6} {y}^{4} {z}^{12} [/tex]

➡️[tex]162 {x}^{4 + 6} {y}^{4} {z}^{12} [/tex]

➡️[tex]162 {x}^{10} {y}^{4} {z}^{12} [/tex] ✅

Here, we need to subtract the quantity of tin from the quantity of iron in order to find how much more iron Trista has than tin

The quantity of iron Trista has more than tin is 7.17 mg

Quantity of iron = 8 mg

Quantity of tin = 0.83 mg

Quantity of iron Trista has more than tin = Quantity of iron - Quantity of tin

= 8 mg - 0.83 mg

= 7.17 mg

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Answer:

$330

Step-by-step explanation:

working hours a day = 5 hours 30 minute

total working hours = 5 days × 5.5 hours

= 27 hours 30 minute

pay per hour = $12

total gross pay a week = 27.5 × $12

= $330

Answer:

F:53cm by 102cm

Step-by-step explanation:

The perimeter of a rectangle can be seen as 2l + 2w, with the length being l, and the width being d. If the ratio is 3:2, then 3+2= 5 parts would be the sum of the length and the width, This is half of the perimeter 2(l+w), so 510÷2 = 255. One part would be 255÷5=51.

If you put it into the ratio, effectively it is:

Length:Width

3×51:2×51

153  :102

Therefore the dimensions are 153cm by 102cm, which is F.

Answer:

..

Step-by-step explanation:

.

gejemmsmwmwkwkwjwgvwh9292i3hbezmalwlwjwhbebsnekalLmNabsheowo

Step-by-step explanation:

maaf klo salah:v

Answer:

5x + 7

Step-by-step explanation:

Given

4x + 7 + x ← collect like terms

= (4x + x) + 7

= 5x + 7

[tex]\huge\text{Hey there!}[/tex]

[tex]\huge\text{4x + 7 + x}[/tex]

[tex]\huge\text{= 4x + 7 + 1x}[/tex]

[tex]\huge\textsf{COMBINE the LIKE TERMS}[/tex]

[tex]\huge\text{= (4x + 1x) + 7}[/tex]

[tex]\huge\text{= 5x + 7}[/tex]

[tex]\huge\text{Answer: \textsf{5x + 7}}[/tex]

[tex]\huge\text{Good luck on your assignment \& enjoy your day! }[/tex]

~[tex]\frak{Amphitrite1040:)}[/tex]

Answer:

-7

Step-by-step explanation:

Equation: 2x - 4 = -18

First, add 4 to both sides:

2x = -14

Finally, divide both sides by 2:

x = -7

Check (optional):

2(-7) - 4 = -18

-14 - 4 = -18

-18 = -18 so this is correct

If you're confused about any of these steps, just let me know and I'll try to clear it up for you! :)

Answer:

SELLING PRICE OF CYCLE = 2250RS

LOSS MAN SUFFERED = 50RS

Step-by-step explanation:

COST PRICE = SP + LOSS

CP = 2250 + 50

CP = 2300 RS

FORMULA OF PROFIT = SP - CP

TO MAKE PROFIT OF 80 RS

80 = SP - 2300

 SP = 2380 RS

HE SHOULD SELL THE CYCLE AT 2380 TO MAKE PROFIT OF 80 Rs

                                          Thank you

                           PLEASE MARK AS BRAINLIEST

Answer:

rs 2380

Step-by-step explanation:

→ Add rs 50 to the selling price to not make a profit or loss

2250 + 50 = 2300

→ Add rs 80 to the answer above

80 + 2300 = 2380

Answer:

Mean=6

Sum of numbers= 30

Step-by-step explanation:

Answer:

[-0.25 1.25]

[ ]

[-0.75 2.75]

If not satisfied than..

You can write it in other way as show in step by step

Step-by-step explanation:

Step 1:

First of all find the determinate.

Cross multiply the number 11 ✖ -1

= -11 ---eq1

And now cross multiply the number 3 ✖ - 5

= -15 ---eq2

Now we use eq 1 and 2

detA = (-11)-(-15)

Minus cancels minus

So it becomes

detA = -11 + 15

= 4

Step 2:

We find adjacent of the given.

[11 -5]

adjA= [ ]

[3 -1 ]

We change the places. The number 11 goes to in place of -1. -1 goes in place of 11.

And we change the signs of -5 and 3. -5 becomes 5 and 3 becomes -3.

We get

[-1 5]

adjA = [ ]

[-3 11]

Step 3:

Now we use the following formula

1

A^-1 = -------- adjA

detA

1 [-1 5]

A^-1 = ------- [ ]

4 [-3 11]

And now multiply

1

---- with each number of adjA.

4

And than subtract..

And you will get the inverse matrix

If the answer comes same than that's the answer for inverse matrix

Thank you.

Answer:

(x-1990)×25

Step-by-step explanation:

SEE THE IMAGE FOR SOLUTION

HOPE IT HELPS

HAVE A GREAT DAY

The Equation is 25x-47500 as a function of the number of years since 1990.

To find equation for the number of students .

Statement that the values of two mathematical expressions are equal.

Given that:

The number of students in high school has been increasing linearly since 1990.

In 1997, 1125 students and in 2000, there were 1200 students.

Increase the number of students in 1997-2000

=1200-1125=75

In 3 years 75 student increased

In 1st years 25 student increased

number of students that will  increasing  in 1990=25

Equation=(x-1900)*25

Equation=25x-47500

where x is date/year

So, the Equation is 25x-47500 as a function of the number of years since 1990.

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Answer:

mark me as a brainlist answer

Step-by-step explanation:

Give examples to explain the properties of real numbers

Property (a, b and c are real numbers, variables or algebraic expressions)Examples8.Additive Inverse Property a + (-a) = 04 + (-4) = 09.Multiplicative Inverse Property10.Zero Property of Multiplication a • 0 = 04 • 0 = 011.Closure Property of Addition a + b is a real number10 + 5 = 15 (a real number)

Answer:

13+n

Step-by-step explanation:

Answer:

13 + n

Step-by-step explanation:

This is because the known number is 13 times more than n so if the value of n is found, _+ 13_ will give you the final answer.