Answer:
10 incorrect answers
Step-by-step explanation:
Correct answer = +3
Incorrect answer = - 1
Mark scored = 20
Number of correct answers = 10
Let:
Incorrect answers = y
Hence, we can fashion out the expression for total score :
(Number of correct answers * score per Correct answer + number of incorrect * score per incorrect) = total score
(10 * 3) + (y * - 1) = 20
30 - y = 20
-y = 20 - 30
-y = - 10
y = 10
10 incorrect answers
on a piece of paper graph y>=2x-3
Answer:
Omsk internet pra mim é um vídeo de um dia
To which of the following sets of numbers does 725 belong?
Prime Number
Negative Number
Positive Number
Find the missing length of the triangle.
Answer:
12 =c
Step-by-step explanation:
Since this is a right triangle, we can use the Pythagorean theorem
a^2+b^2 = c^2 where a and b are the legs and c is the hypotenuse
7.2 ^2 + 9.6 ^2 = c^2
51.84+92.16= c^2
144 = c^2
Taking the square root of each side
sqrt(144) = sqrt(c^2)
12 =c
Answer:
Let's find the hypotenuse.
7.2^2 + 9.6^2
51.84 + 92.16 = 144
√144(square root of 144) = 12, c = 12
whats the balance point for 3,7,8
Answer:
The balance point is the,number in between your set of numbers so you need to find The middle of 3 and 7, and then when you get that answer you find the number in between 8 and the,number you just found
Step-by-step explanation:
I'm not good at figuring this out myself but, I know the steps
Sales Geet sells televisions. He earns a fixed amount for each television and an additional $15 if the
buyer gets an extended warranty. If Geet sells 14 televisions with extended warranties, he earns
$910. How much is the fixed amount Geet earns for each television?
The fixed amount Geet earns for each television he sells is $
Answer:
50
Step-by-step explanation:
15 times 14 = 210
910 - 210 = 700
700 divided by 14 = 50
Write the equivalent percent for each fraction.
72
%
41,000
%
1025
%
38
%
72%=18/25
41000%=410/1
1025%=41/4
38%=19/50
Answer:
72% = 18/25
41000 = 410/1
1025 = 41/4
38 = 19/50
Step-by-step explanation:
I put into the calculator...if that makes sense
A scale drawing of a school playground in the shape of a rectangle is shown
19 cm
School playground
8 cm
Scale
1 centimeter : 4.5 meters
What is the area, in square meters of the playground?
A. 152
OB. 684
C 1094
D3078
Answer:
b
Step-by-step explanation:
8×19= 152 [tex]cm^{2}[/tex]
1 [tex]cm^{2}[/tex] : 4.5 [tex]m^{2}[/tex]
152×4.5=684 [tex]cm^{2}[/tex]
Consider the function.
f(x) = x2 + 3
Which answer pairs a possible domain restriction that if placed upon f(x) would impact f–1(x) as shown?
Answer:
b
Step-by-step explanation:
edge 2021
The solution is:
B. f(x) domain: x ≥ 1
f–1(x) range: y ≥ 1
What is function?Function, in mathematics, an expression, rule, or law that defines a relationship between one variable (the independent variable) and another variable.
Here, we have,
Because the two functions are inverse to each other, so we all know that the domain of f(x) will be the range of f^-1(x) and the range of f(x) will be the domain of f^-1(x)
As can be seen from the attached photo,
f(x) extends to the right of x=1, so its domain is x ≥ 1.
<=> f^-1(x) range is y≥ 1.
Therefore, we choose answer B
To learn more on function click:
brainly.com/question/21145944
#SPJ3
complete question:
Which answer pairs a possible domain restriction for f(x) and its corresponding impact on f-1(x)
Samir heard that blueberries and cranberries were "superfoods," so he decided to eat a lot of
them. He went to the store and bought a pound of blueberries and a pound of cranberries. He
ate the berries steadily on Monday, Tuesday, Wednesday, and Thursday until they were gone.
How many pounds of berries did Samir eat each day?
Write your answer as a proper fraction or mixed number.
pounds
Answer:
1/2
Step-by-step explanation:
2 pounds divided by 4 days
Answer: 1/2
Step-by-step explanation:
2 pounds in 4 days so, 2 divided by 4 is 1/2
Find the value of 3 + 2 • (8 – 3)
(a) 25,
(b) 13,
(c) 17,
(d) 24,
(e) 15.
Answer:
Step-by-step explanation:
3+2(8-3)
3+2*5
3+10
13
use BODMAS rule (Bracket Of Division Multiplication Addition and Subtraction).
identify the postulate (if any) that can be used to show the two triangles are congruent.
Answer:
Step-by-step explanation:
1) SSS
2) SAS
3) SSA
4) SSA
no, don't say Angle Side Side... :P
Solve for x. Thank you
Given:
A figure of a right angle triangle.
To find:
The value of x.
Solution:
First, label the vertices figure as shown below.
In triangle ABC and DBA,
[tex]\angle BAC\cong \angle BDA[/tex] (Right triangles)
[tex]\angle ABC\cong \angle DBA[/tex] (Common angle)
[tex]\triangle ABC\sim \triangle DBA[/tex] (AA property of similarity)
We know that the corresponding sides of similar triangles are proportional.
[tex]\dfrac{BC}{BA}=\dfrac{AB}{DB}[/tex]
Substituting the given values from the below figure, we get
[tex]\dfrac{x}{8\sqrt{3}}=\dfrac{8\sqrt{3}}{12}[/tex]
[tex]x=\dfrac{8\sqrt{3}}{12}\times 8\sqrt{3}[/tex]
[tex]x=\dfrac{192}{12}[/tex]
[tex]x=16[/tex]
Therefore, the value of x is 16 and correct option is B.
Please help me if you can!
Answer:
arc ACD = 120°
Step-by-step explanation:
Angle ACD = 120°
From cyclic quadrilaterals, opposite angles are supplementary.
angle ABD + angle ACD = 180
120 + ACD = 180
ACD = 60
Let the centre be point O.
Then arc ACD is the same as the angle AOD
From chord properties,
angle ABD = angle AOD /2
or
AOD = 2 * ABD = 2*60 = 120°
please help!!! i’ll give brainliest.
no links
do not comment random things
i need help asap!!
ill give as many points i can
ihgubhuybh g bh h ygv vgbj uv bu
Answer:
4
Step-by-step explanation:
The scale factor is 4
Using the quadratic formula to solve 2x^2 = 4x - 7, what are the values of x?
Answer:
Is C.
Step-by-step explanation:
Consider,
2x² = 4x - 7
2x² - 4x + 7 = 0
using Quadratic Formula
Therefore, Option C is correct.
In order to understand the magnitude of the effect a treatment has on a group of subjects in an experiment, the response from a treatment group is compared with the response from:
A) A different treatment group in the same trial of the experiment
B) The same treatment group in a different trial of the experiment
C) A control group in the same trial of the experiment
Find the volume of the L shaped composite prism, show clearly how you got your answers
9514 1404 393
Answer:
510 cm³
Step-by-step explanation:
The overall height of the front face is 9+2 = 11 cm.
The overall width of the front face is 6+4 = 10 cm.
Out of that 11 cm by 10 cm rectangle, a cutout is made in the upper right corner. The area of that cutout (in the plane of the front face) is 2 cm high by 4 cm wide.
Then the area of the front face is ...
(11 cm)(10 cm) -(2 cm)(4 cm) = 110 cm² -8 cm² = 102 cm²
The volume of the prism can be found using the formula ...
V = Bh
where B is the area of the "base" of the prism, and h is its height. Here, the "base" is the front face, and the height is the dimension marked 5 cm. The volume is ...
V = (102 cm²)(5 cm) = 510 cm³
The volume of the prism is 510 cm³.
Janine is running at 10 kilometers per hour. How long will it take Janine to travel 15 kilometers?
Step-by-step explanation:
janine is running 10 kilometer per 60 minutes
means janine runs 1 km in
=60/10
=6
since,Janine runs 1 km per 6 minutes
how much time does janine takes to run 15 km
=15 ×6
=90
Therefore Janine takes 90 minutes to run 15 km ie1 hour 30 minutes
The Smith family plans to purchase a new house in 4 years, and they want to make a down payment of 25% of the estimated purchase price of $250,000. Find the amount they need to invest to make the down payment if funds earn 12% compounded quarterly.
Answer:
The Smith Family paid $50, 820 as down payment.
Step-by-step explanation:
Total purchase price the Smith Family Paid = $231,000
Percentage of the amount paid in Down Payment = 22%
This means 22% of the total purchase price was paid in down payment.
The formula to calculate percentage in this case will be:
Percentage Price = (Amount Paid in Down Payment/Total Price) x 100%
Using the values, we get:
22% = (Amount Paid in Down Payment) / 231,000 x 100%
0.22 = (Amount Paid in Down Payment) / 231,000
Amount Paid in Down Payment = 0.22 x 231000 = $50, 820
This means, The Smith Family paid $50, 820 as down payment.
Hope this answer helps you :)
Have a great day
Mark brainliest
△ABC is reflected across the y-axis on a coordinate plane, resulting in △A′B′C′. If the measure of ∠A is 50 degrees, what is the measure of ∠A′?
Answer:
Reflections across the line y = x
A reflection across the line y = x switches the x and y-coordinates of all the points in a figure such that (x, y) becomes (y, x). Triangle ABC is reflected across the line y = x to form triangle DEF. Triangle ABC has vertices A (-2, 2), B (-6, 5) and C (-3, 6).
Name two lines that contain point K. *
Answer:
sf and st
Step-by-step explanation:
Question 4 of 11
One way to find the equation of a line is to look at some points on it and try to
find the relationship between the coordinates.
A. True
B. False
Solve for A.
-11 + a/15= -13
Please show work.
Answer:
A/15 = -13+11
A/5=-2
A= -2*5
A = -10
Answer:
-30
Step-by-step explanation:
-11+a/15=-13
a/15=-13-(-11)
a/15=-13+11
a/15=-2
a=-2*15
a=-30
What is the value of the expression below? (9 divided by 3)+4(6-7)
Answer:
-1
Step-by-step explanation:
(9 divided by 3) + 4 (6 - 7) =
(9 ÷ 3) + 4 (6 - 7) =
( 3 ) + 4 ( -1 ) = Multiply 4 by -1
( 3 ) ( -4 ) = Subtract
-1
a park is 9/10 mile long and 4/5 mile wide. What is the area of the park? ENTER ANSWER AS A FRACTION FOR EXAMPLE: 4/10.
The park formed like a rectangle so :
Area = length × width
Area = ( 9/10 ) × ( 4/5 )
Area = 9 × 4 / 10 × 5
Area = 9 × 2 × 2 / 5 × 5 × 2
Area = 18 / 25
Graph the first six terms of a sequence where a1 = -3 and r = 1.5
one minute I'm doing the math
Solve for R.
3/4r-3 1/4=49/16
Answer:
101/12
Step-by-step explanation:
3/4r-3 1/4=49/16
3 1/4=13/4
3/4r-13/4=49/16
3/4r=49/16+13/4
3/4r=49/16+52/16
3/4r=101/16
r=(101/16)/(3/4)
r=(101/16)(4/3)
r=101/12
Solve for r (will give Brainliest)
64pi = 1/3 pi r^2 x 3
Answer:
Step-by-step explanation:
64pi = (1/3)pi r^2 *3 = pi r^2
r^2 =64
r = sqrt(64) = 8
The lines shown below are parallel. If the green line has a slope of -3/7, what is
the slope of the red line?
10-
3
O A.
O
IN
OB.
B.
5
10
16
.5
O c. 1 /
O D. 1
102
Answer: the slope of green line = [tex]-\frac37[/tex]
Step-by-step explanation:
We know that,
If two lines are parallel then their slopes(rate of change of y with respect to x) are equal.
Given: The red line and the green line are parallel.
The slope of red line = [tex]-\frac37[/tex]
Then, the slope of green line = [tex]-\frac37[/tex] [Slopes of two parallel lines are equal]
Hence, the slope of green line = [tex]-\frac37[/tex]
What is the area of the triangle in centimeters squared?
Answer:
[tex]{ \tt{base = \sqrt{ {23}^{2} - {16}^{2} } = 16.5 \: cm}} \\ area = \frac{1}{2} \times base \times height \\ area = \frac{1}{2} \times 16.5 \times 16 \\ { \tt{area = 132 \: {cm}^{2} }}[/tex]