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.
What is arithmetic?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%.
Learn more about percentages here:
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What decimal is equal to the following fraction?
12/20
Answer:
It is 0.6
Step-by-step explanation:
[tex] \frac{12}{20} [/tex]
divide numerator and denominator by 2:
[tex] = \frac{12 \div 2}{20 \div 2} \\ \\ = \frac{6}{10} [/tex]
since it's a tenth, it becomes a value with out decimal place:
[tex] = 0.6[/tex]
Evaluate the expression when Y=4
Y^2+5y+7
Answer:
-4
Step-by-step explanation:
If you just have -y as the expression, and the problem tells you that y = 4, then you are going to plug 4 in place of y. - (4).
Kelly works two jobs. She usually works at a retail store for eight hours during the day and is paid $15.23 per hour by the store. In the evening she works at a restaurant as a manager for 8 hours and is paid $24.50 per hour. How much does she make on average per hour for the day?
Answer:
Kelly makes about $19.87 per hour for the day.
Step-by-step explanation:
Solve for retail store:
15.23 × 8
121.84
Solve for restaurant:
24.50 × 8
196
Add both of her paychecks:
121.84 + 196
317.84
Divide the total by the total number of hours to find the average per hour:
317.84 ÷ 16
19.865
Round to nearest cent:
19.865 is about 19.87
Translate this phrase into an algebraic expression.
The sum of 16 and twice a number
Use the variable n to represent the unknown number.
HELP ASAP
The city planning committee decides that more than $8,000 must be budgeted for new playground equipment. Each swing set (x) will
cost $450, and each slide (y) will cost $600. Which inequality models this situation?
Answer:
x+y=$8,000 i guess
Step-by-step explanation:
If 2 – x > x – 2 then the solution of x is
[tex]\\ \sf\longmapsto 2-x\gt x-2[/tex]
[tex]\\ \sf\longmapsto 2+2\gt x+x[/tex]
[tex]\\ \sf\longmapsto 4\gt 2x[/tex]
[tex]\\ \sf\longmapsto x\lt \dfrac{4}{2}[/tex]
[tex]\\ \sf\longmapsto x\lt 2[/tex]
Please help me out with this
Step-by-step explanation:
(2x-1)(3x+2) = 0
6x + 4x - 3x - 2 = 0
7x - 2 = 0
7x = 2
X = 2/7
Fill in this X for the 2 formulas, I'll do the first one:
2 * 2/7 - 1 =.....
Then take the 2 answers you get and multiply them with each other so you get the surface size (length * width)
Find a.
Round to the nearest tenth:
2 cm
150
105
a = [? ]cm
Law of Sines: sin A sin B
sin C
b
Answer:
1.8 cm to the nearest tenth.
Step-by-step explanation:
The angle opposite side a = 180 - 105 - 15 = 60 degrees.
By the Sine Rule:
a / sin 60 = 2 / sin 105
a = 2 * sin60/ sin 105
= 1.79315
PLEASE I NEED HELP WITH THIS PLEASE
Answer:
SEE IMAGE FOR SOLUTION
Hope it helps
Have a great day
4x+8=3x+14
please put break it down how you did it
Determine the intercepts of the line.
Do not round your answers.
y=-7x+3
Step-by-step explanation:
For x-intercept:
put y=0
0=-7x+3
7x=3
x=3/7
points(3/7,0)
For y-intercept:
x=0
y=-7(0)+3
y=3
points(0,3)
Note:if you need to know any question please let me know.what is x²-3x+8 if x=4
Answer:
12
Step-by-step explanation:
Substitute x = 4 into the expression
4² - 3(4) + 8 = 16 - 12 + 8 = 12
Answer:
12
Step-by-step explanation:
x²-3x+8
Plug in:
(4)²-3(4)+8
Use PEMDAS:
P - Parentheses
E - Exponents
M - Multiplication
D - Division
A - Addition
S - Subtraction
(4)²-3(4)+8
16 - 3(4) + 8
16 - 12 + 8
4 + 8
12
Hope this helped.
Is 33/3 a natural,whole,integer,rational
Answer:
Rational number . . . . . .
Functions (solid) and g(dash) are graphed. What is the equation of g?
Answer:
please give me brillriant answer
Recall that in Linear Functions, we wrote the equation for a linear function from a graph. Now we can extend what we know about graphing linear functions to analyze graphs a little more closely. Begin by taking a look at Figure 8. We can see right away that the graph crosses the y-axis at the point (0, 4) so this is the y-intercept.
can someone help please?
Answer: x=85 and the equation is at the step by step
Step-by-step explanation:
150 + 77 + 48 = 275
360 - 275 = 85 = x
Simplify the following expression
by combining like terms.
Answer:
2x² + 5x
Step-by-step explanation:
Given
3x² + 4x - x² + x ← collect like terms
= (3 - 1)x² + (4 + 1)x
= 2x² + 5x
5. Mrs. Perkins hosts a birthday party for her son and 7 guests. She orders 2 cookies and a
cupcake for each child. The cost of the cupcake is $2.75, and the total bill is $46.00. What is the
cost of a cookie?
Answer:
A cookie is $1.50.
Step-by-step explanation:
Variable x = cost of cookies
For each child means the 7 guests plus Mrs. Perkins' son which equals 8.
Set up an equation:
(2x)8 + (2.75)8 = 46
Use distributive property:
16x + 22 = 46
Isolate variable x by subtracting both sides by 22:
16x = 24
Isolate variable x by dividing both sides by 16
x = 1.5
Check your work:
2(1.5) × 8 + (2.75)8 = 46
3 × 8 + 22 = 46
24 + 22 = 46
46 = 46
Correct!
Answer: $1.50 per cookie
Step-by-step explanation:
We know that each cupcake is worth $2.75 and the total bill of all her purchases is $46.
Therefore, lets multiply the cost of a cupcake times the amount of people eating them. (the sons and 7 guests which add up to 8)
2.75(8) = $22
Now take the total cost of 8 cupcakes and subtract it from the total.
46 - 22 = $24
24 dollars is equal to the cost times the amount of cookies purchased. Therefore, let X equal to the cost per cookie and multiply it times the amount of cookies purchased. The amount of cookies is equal to 2 cookies times 8 children.
(2*8)X = 24
16x=24
x= $1.50
Check:
8[ (1)(2.75) + 2X ] = 46
8[ 2.75 + (2) (1.50) ] = 46
22 + 24 = 46
46 = 46
2.1.PS-8
Question Help
A package of 4 pairs of insulated gloves costs $29.16. What is the unit price of the pairs of gloves?
Answer:
7.29
Step-by-step explanation:
B={the first five multiple of 2}. Express it in roster method and rewrite in set builder method?
Answer:
B (2,4,6,8,10) is the answer
B=(X:X is the first five multipel of 2)
this is a correct answer
Please help ASAP!!!!!!
Answer:
Step-by-step explanation:
1. 15
2. 40
A scale drawing of a school bus has a scale of 1/2 inch to 5feet. If the length of the school bus is 4 1/2 inches on the scale drawing. What is the actual length of the bus? Explain or show your reasoning.
Evaluate the expression if m =
-4, n = 1, p = 2, 9 = -6, r = 5, and t = -2.
|16+4(3q + p)|
Answer:
720
Step-by-step explanation:
|16+4(3(-6)+(2)|
|20(-18*2)|
|20*-36|
|-720|
720
Step-by-step explanation:
[tex] |16 + 4(3q + p)| \\ p = 2 \\ q = - 6 \\ then \\ = |16 + 4(3 \times - 6 + 2)| \\ = |16 + 4( - 18 + 2)| \\ = |16 + 4( - 16)| \\ |16 + - 64| \\ = | - 48| \\ take \: out \: side \: of \: mode \: then \: it \: become \: = 48 \\ \\ thank \: you[/tex]
1 3/4 divided by 2 3/8
will give brainiest pls help
Answer:
[tex]\frac{14}{19}[/tex]
First:
Convert any mixed numbers to fractions.
Then your initial equation becomes:
[tex]\frac{7}{4} \div \frac{19}{8}[/tex]
Applying the fractions formula for division:
[tex]= \frac{7 \times 8}{4 \times 19}[/tex]
[tex]= \frac{56}{76}[/tex]
Simplifying 56/76, the answer is:
[tex]\frac{14}{19}[/tex]
I hope this helps! :)
Answer:
the answer is 14/19
change the mixed numbers to improper fractions then that becomes 7/4 and 19/8 then multiply across 7x8=56 and 19x4=76 that gives you 56/76
Simplifying 56/76,= 14/19
100 POINTS
100 PUNTOS
------------------------------------------------------------------
If I buy an apple with 100 coins, how many coins do I need to have 1000 apples?
------------------------------------------------------------------
Si compro una manzana con 100 monedas, ¿cuántas monedas necesito para tener 1000 manzanas?
Answer:
100,000 coins
Step-by-step explanation:
We can use a ratio to solve
1 apple 1000 apples
------------ = ---------------
100 coins x coins
Using cross products
1x = 100 * 1000
1x = 100,000
We need 100,000 coins
Answer:
100,000 coins
Step-by-step explanation:
1 apple cost 100 coins
We want to find the amount of coins needed to get 1000 apples.
To do so we simply multiply the coins it takes to get 1 apple (100) by 1000
1000 * 100 = 100,000
If a line segment AB is on the number line, and the point A is at - 7 and point B is at 12, the length of AB is ____.
Answer:
Here,
A=-7
B=12
Length of AB=?
Now, We know that,
Length of AB=-7-12
=-19
Thus, the length of AB is -19
Solve using Quadratic Formula
x^2 + 3x - 3 = 0
Answer:
a= 1 , b= 3 , c= –3
[tex]x = \frac{ - b \frac{ + }{} \sqrt{ {b}^{2} - 4ac} }{2a} \\ x = \frac{ - 3 \frac{ + }{} {} \sqrt{ {3}^{2} - 4(1)( - 3)} }{2(1)} \\ = \frac{ - 3 \frac{ + }{} \sqrt{9 + 12} }{2} = \frac{ - 3 \frac{ + }{} \sqrt{21} }{2} \\ \\ x = \frac{ - 3 \frac{ + }{} \sqrt{21} }{2} \\ \\ x = 0.79 \\ x = - 3.79[/tex]
I hope I helped you^_^
Help me I'm 9 the last box pls
Answer:
500, 500, 50, 10.
Step-by-step explanation:
5000 ÷ 500 = 10,
500 ÷ 50 = 10
50 ÷ 5 = 10
Answer:
5,000/500 = 10
50 /5 = 10
500/50 = 10
Method:
Calculator ;)
can someone help me please?
[tex]\\ \sf\longmapsto \dfrac{2}{4}[/tex]
[tex]\\ \sf\longmapsto \dfrac{1}{2}[/tex]
[tex]\\ \sf\longmapsto \dfrac{1(5)}{2(5)}[/tex]
[tex]\\ \sf\longmapsto \dfrac{5}{10}[/tex]
[tex]\\ \sf\longmapsto 0.5[/tex]
#2
[tex]\\ \sf\longmapsto \dfrac{3}{4}[/tex]
[tex]\\ \sf\longmapsto \dfrac{3(25)}{4(25)}[/tex]
[tex]\\ \sf\longmapsto \dfrac{75}{100}[/tex]
[tex]\\ \sf\longmapsto 0.75[/tex]
#3
[tex]\\ \sf\longmapsto \dfrac{7}{8}[/tex]
[tex]\\ \sf\longmapsto \dfrac{7(125)}{8(125)}[/tex]
[tex]\\ \sf\longmapsto \dfrac{875}{1000}[/tex]
[tex]\\ \sf\longmapsto 0.875[/tex]
#3
[tex]\\ \sf\longmapsto \dfrac{3}{8}[/tex]
[tex]\\ \sf\longmapsto \dfrac{3(125)}{8(125)}[/tex]
[tex]\\ \sf\longmapsto \dfrac{375}{1000}[/tex]
[tex]\\ \sf\longmapsto 0.375[/tex]
Five explorers plan to share them equally. How many jewels does each get.
A cylinder has a base area of 154 cm² and a height of 20cm. What is its total surface area, in cm?? Use, 22/7
A.1188
B.1200
C.1220
D.1224
Answer:
Hi there!
We've given with the base area and height. We know the formula for base area
Base area = πr²
154 = 22/7 × r²
154 × 7/22 = r²
49 = r²
√49 = r
7 = r
Now
TSA = 2πr(h + r)
TSA = 2 × 22/7 × 7(7 + 20)
TSA = 44(27)
TSA = 1188 cm²