Answer:
1.75b +5.50
Step-by-step explanation:
1.75b= 1.75 a book
+ 5.50 = flat rate
In a class test , 3 marks are awarded for every correct answer and (-2) marks are awarded for every incorrect answer and no marks for not attempting any questions. ( find the following given below ).
1) Irine scored 20 marks . if she has got 12 correct answers , how many questions has she attempted incorrectly ?
2) Chloe scored (-5) though she has got 7 correct answers . how many questions has she attempted not correctly ?
[tex]\huge\sf {solution}[/tex]
#1 Marks awarded for onecorrect answers = 3 Marks awarded for 12 correct answers = 3 × 12 = 36 Marks obtained for incorrect answers = 20 - 36 = -16 Marks given for 1 incorrect answer = -2 Therefore, ( - 16 ) ÷ ( - 2 ) = 8hence , irene has attempted 8 questions incorrectly
#2 Marks scored by chloe for 7 correct answers = 3 × 7 = 21 chloe scored = -5 Marks obtained for incorrect answers = -5 - 21 = -26 Marks awarded for 1 incorrect answer = -2 Therefore , number of incorrect answer = -26 / -2 = 13hence , chloe has attempted 13 questions not correctly
Hope it helps ( ╹▽╹ )~
ABC is a right angled triangle AC=18 angle ACB=37 calculate the length of AB
Answer:
10.8
Step-by-step explanation:
sin(37) =AB/AC
Since AC=18
AB= 18sin(37)
Therefore AB=10.8
The vans store originally cost $65. It is now on sale for $45.50. What is the percent of decrease or discount?
Answer:
the amount of decrease is 30%
Answer: 30
Step-by-step explanation:
$19.50 discount
discount percentage 30%
A steel company sells 144 tons of steel every 3 years.
At this rate, what is the unit rate for the amount of steel sold every year. You can make a ratio table to help you think through this problem.
Answer:
48 tons of steel per year
Step-by-step explanation:
you can make it a ratio problem but you can also divide it
144 tons : 3 years
? : 1 year
take 144/3 and you get
48 tons
so
48 tons : 1 year
Answer:
Unit rate= 36
Step-by-step explanation:
Divide 144 by 4 and you get 36. So, the steel company made 36 tons of steel in 1 year and made 144 tons of steel in 4 years
What is the equation of the line that passes through the point (−8,−7) and has a slope of 1?
Answer:
y = x + 1
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
here m = 1 , then
y = x + c ← is the partial equation
To find c substitute (- 8, - 7 ) into the partial equation
- 7 = - 8 + c ⇒ c = - 7 + 8 = 1
y = x + 1 ← equation of line
which statement best explain best explains whether the table represents a linear or non linear function (100 POINTS) HURRYYYY PLSSS
Answer:
It is a linear function because there is a constant rate of change in both the input and output values
Step-by-step explanation:
To determine if the function is linear, calculate the differences between the y values.
If the differences are constant, or the same value, the equation is linear and has a constant slope. If the differences are not the same, the equation is not linear.
difference between y values (output)
7 - 4 = 3
3 - 1 = 3
1 - -2 = 3
⇒ the function is linear
difference between x values (input)
-2 - -5 = 3
-5 - -8 = 3
-8 - -11 = 3
⇒ the function is linear as there is a constant rate of change in both the input and output values
Help me with geometry please
Answer:
7?
........... .. .....
Solve for the variable and express the answer in set notation.
5x - 4 = 11
Answer: The answer is x=3
Step-by-step explanation:
Let's solve your equation step-by-step.
5x−4=11
Step 1: Add 4 to both sides.
5x−4+4=11+4
5x=15
Step 2: Divide both sides by 5.
5x
5
=
15
5
x=3
Answer:
x=3
m +0.05m = 5.46
plsss help (15 points)
Find the equation of the exponential function represented by the table below:
Emma is an artist and has created seven paintings
Answer:
what is the rest?
Step-by-step explanation:
A moving box is 1 meter wide, 1/2 meter long, and 3/4 meter tall. How many cubic meters can the box hold?
39=7(mod 8)
Is the above statement true or false?
Answer:
True
Step-by-step explanation:
39/8 = 4.875
8*4 = 32
Therefore, 39 - 32 = 7
find the area of each rectangle 8 ft and 4.2 ft
I need help find the value of x?
Add the two angles and then subtract from 180* to find the missing angle
So,
145* + 15* = 160*
180* - 160* = 20*
Answer: x = 20*
At a nut shop, a 3-pound bag of cashews costs $39, and a 5-pound bag of almonds costs $55. What is the cost per pound for each type of nut? Show your work.
how do i solve for x in x/9=6
Answer:
x = 54
Step-by-step explanation:
Solve for x by simplifying both sides of the equation, then isolating the variable.
Solve this pls ✨ my teacher is crazy she give us so much work
Answer:
The photo
Step-by-step explanation:
All is wreaten in the photo
PLEASE PLEASE help me out!!!
Trying to get my grade up
Answer: x=4 and y=1
Step-by-step explanation:
From the first equation, we get y = 9 - 2x. Substitute this into the second equation we get
3x - 4(9 - 2x) = 8
3x - 36 + 8x = 8
11x = 44
x = 4
y = 9 - 2(4)
y = 1
Hope this helps
Byron is a wealthy tycoon who makes his money buying and selling stocks. This is an example of _____ income. A. Capital gains b. Earned c. Hourly d. Passive Please select the best answer from the choices provided A B C D.
Answer:
The answer would be A.
Hope this helped :D
Answer:
It is A
Step-by-step explanation:
For new customers, there is an additional one-time $100 service fee. Repeat the previous problem for new customers.
Complete the equation below
Answer:
y = 70x
Step-by-step explanation:
y=70x+100 you would get y = 70x
200 divided by 30,000
200 divided by 30,000 equals
"0.00666666666"
hope this helps!
Answer: 0.006666667 = 1/150
Step-by-step explanation: Reduce the fraction 200/30,000 to lowest terms by extracting and canceling out 200.
2. Explain how to calculate 8% of 350 by first calculating 1% of 350. Answer:
Answer:
$28Step-by-step explanation:
Find 1% of $350:
$350*1/100 = $3.5Find 8% of $350:
$3.5*8 = $28Here are the steps
First find 1% of 350Then multiply with 8/1=8 times with 1%Lets do
[tex]\\ \tt\longmapsto 0.01(350)=3.50[/tex]
Multiply with 8
[tex]\\ \tt\longmapsto 8(3.50)=24.00+4.00=28.00\$[/tex]
A rectangle has a width of 12. 5 m and a length of 105 m. What is the effect on the perimeter when the dimensions are multiplied by 2? The perimeter is increased by a factor of 2. The perimeter is increased by a factor of 21. The perimeter is increased by a factor of 25. The perimeter is increased by a factor of 92.
The perimeter of the rectangle is got increased by a factor of 2. The correct option is A.
What is a rectangle?It is a polygon that has four sides. The sum of the internal angle is 360 degrees. In rectangle opposite sides are parallel and equal and each angle is 90 degrees. And its diagonals are also equal and intersect at mid-point.
Given
A rectangle has a width of 12.5 m and a length of 105 m.
We know the perimeter of the rectangle is given by
Perimeter = 2 (Lenght + Width)
Let x be the length and y be the width. Then
Perimeter = 2 (x + y)
If the dimensions are multiplied by 2. Then the effect on the perimeter will be
Perimeter = 2 (2x + 2y)
Perimeter = 2 [2 (x + y)]
The perimeter is increased by a factor of 2.
Thus, option A is correct.
More about the rectangle link is given below.
https://brainly.com/question/10046743
Chris can read 50 pages of a book in 1 ½ hours. Based on this rate, how many pages will he read in 4 ½ hours?
Answer:
150
Step-by-step explanation:
50pg=1.5h multiply both by 3 to get 4.5 hours 50x3=150
Answer: 150
hope this helped :)
Question 9
In △QRS , ∠R is a right angle and the measure of ∠S is 22° .
(image below)
Which equation can be used to calculate the measure of ∠Q ?
A
x+22=180
B
x+22=90
C
22−x=180
D
22−x=90
Answer:
i think the answer is b
because,
if x+22=90
x=90-22=68
we know that the sum of the three angles of a triangle is 180
so, that means
90+22+68 should be 180
and it is 180, so the answer must be b
Find the solutions to the given system of equations: x^2+ y^2= 5 and y=3x + 1
At 3:00 PM a man 5 ft tall casts a shadow 19.5 ft long. At the same time, a tree nearby casts a shadow 93.6 ft long. How tall is the tree?
You’ve analyzed each game. Which game earns you more points?
A: game 1 ( 200 points per hit)
B: game 2 (points double on each hit)
C: It depends
Explain your answer.
Answer:
Game 2
Step-by-step explanation:
Each hit the points would double (point(x2))
Example:
1x2=2, 2x2=4, 4x2=8, 8x2= 16, 16x2=32, and so on.
Answer:
It Depends
Step-by-step explanation:
Sample Answer: For up to 11 hits, Game 1 gives the player higher scores. But for 12 or more hits, Game 2 does. That's because exponential growth eventually exceeds linear growth.
Find the perimeter of the figure.
Answer:
36 in.
Step-by-step explanation:
The perimeter is the sum of the length of all the sides.
Perimeter of the figure
= 8 +8 +4 +6 +10
= 36 in