Mia is taking a multiple choice test with a total of 50 points available. Each question is worth exactly 2 points. What would be Mia's test score (out of 50) if she got 3 questions wrong? What would be her score if she got x questions wrong?
Answer:
Mia's test score is 44 if she got 3 questions wrong.
Mia's test score is (50-2x) if she got x questions wrong.
Step-by-step explanation:
It is given that, Mia is taking a multiple choice test with a total of 50 points available. Each question is worth exactly 2 points.
If she got 3 questions wrong, then
Deducted marks [tex]=2\times 3=6[/tex]
Marks obtained by Mia = Total marks - Deducted marks
[tex]=50-6[/tex]
[tex]=44[/tex]
So, Mia's test score is 44 if she got 3 questions wrong.
If she got x questions wrong, then
Deducted marks [tex]=2\times x=2x[/tex]
Marks obtained by Mia = Total marks - Deducted marks
[tex]=50-2x[/tex]
So, Mia's test score is (50-2x) if she got x questions wrong.
Which of these expressions are equal to −2i ? Choose all that are correct. A (2−2i)2 B (1−i)(1+i) C (2−3i)−(2−i) D (2−i)−(2−i) E (−4+2i)(1+i) F (1−i)2
Answer:
b and f
Step-by-step explanation:
just took the quiz
if f(x) = x - 2, what is f(-1)?
Step-by-step explanation:
f(x) = x - 2
f(-1) = -1 -2
= -3
w-5<17 solve the inequality for w
Answer:
w < 22
Step-by-step explanation:
w - 5 < 17
Add 5 to both sides:
w - 5 + 5 < 17 + 5
w < 22
Your answer should be a polynomial in standard form.
(c^2 - 6)(2c^2 + 3c - 1)
Answer:
[tex] \boxed{ \bold{ { \boxed{ \sf{2 {c}^{4} + 3 {c}^{3} - {13c}^{2} - 18c + 6}}}}}[/tex]
Step-by-step explanation:
[tex] \sf{( {c}^{2} - 6)(2 {c}^{2} + 3c - 1)}[/tex]
Use distributive property
[tex]{ \sf{ {c}^{2} (2 {c}^{2} + 3c - 1) - 6(2 {c}^{2} + 3c - 1)}}[/tex]
[tex] \sf{2 {c}^{4} + 3 {c}^{3} - {c}^{2} - 12 {c}^{2} - 18c + 6}[/tex]
Collect like terms
[tex] \sf{2 {c}^{4} + 3 {c}^{3} - 13 {c}^{2} - 18c + 6} [/tex]
Hope I helped!
Best regards! :D
The price c of a used car plus 11% sales tax
Answer:
This is the expression: c +( 0.11*c)
Step-by-step explanation:
Which equation does the graph below represent?
y = 1 x
y = 4x
y = _ 1x
y = -4x
Answer:
Y=-4x
Step-by-step explanation:
Whenever you solve for slope, and the slope is 1, never write 1 in the equation. Write either -x or x. Let's take two coordinates, one which is (0, 0), which is the origin, and (1, -4). To find the slope, we insert the first coordinate and second coordinate values into the equation (Y2-Y1)/(X2-X1). We can insert these coordinates to get (-4 - 0)/(1 - 0), which simplifies to (-4)/1, which further simplifies to -4. Since the Y-intercept is zero, there is no value of B in the equation, which leaves the equation as Y=-4x
Square root of 50 estimated to the nearest integer
Answer:
square root of 50 estimated to the nearest integer is, 7.1
Step-by-step explanation:
step 1. the square root of 50 is 7.07106781186548
step 2. reduce is 7.07
step 3. round 7.07 so you only have one digit after the decimal point to get the answer., 7.1
Answer:
7
Step-by-step explanation:
Consider perfect squares either side of 50, that is
49 < 50 < 64, thus
[tex]\sqrt{49}[/tex] < [tex]\sqrt{50}[/tex] < [tex]\sqrt{64}[/tex] , that is
7 < [tex]\sqrt{50}[/tex] < 8
Since 50 is nearer to 49 than it is to 64, then
[tex]\sqrt{50}[/tex] ≈ 7 ( to the nearest integer )
Find the coordinates of the midpoint of a segment with the given endpoints. (-2.5) & (3-17)
Answer:
Step-by-step explanation:
(-2+3)/2 = 1/2
(5 - 17)/2 = -12/6= -2
(1/2, -2)
Answer:
Find the coordinates of the midpoint of a segment with the given endpoints. (-3,5) (7,-1)
Step-by-step explanation:
–8( — 10и + би — 7) – 10и
Answer:
22и + 56
Step-by-step explanation:
Order of Operations: BPEMDAS
Step 1: Parenthesis (add)
-8(-4и - 7) - 10и
Step 2: Distribute (multiply)
32и + 56 - 10и
Step 3: Combine like terms (и)
22и + 56
Simplify ( 2^5/3^2)^4
Answer:
[See Below]
Step-by-step explanation:
✦ First simplify parts of the equation to make it easier:
✧ 2⁵ = 32
✧ 3² = 9
✦ Rewrite and solve parenthesis:
✧ (32 ÷ 9)⁴ = 3.55555556⁴
✦ Now solve the exponent:
✧ 3.55555556⁴ = 159.819541
✦ Simplify your answer:
✧ 159.82 (I rounded to the nearest hundredths)
~Hope this helps Mate. If you need anything feel free to message me.
−8y−13=14y+11 what is the answer?
Answer:
y = -12/11
Step-by-step explanation:
-8y - 13 = 14y + 11
-8y - 14y = 11 + 13
-22y = 24
y = 24/-22
y = -12/11
Check:
-8*-12/11 - 13 = 14*-12/11 + 11
96/11 - 13 = -168/11 + 11
96/11 - 143/11 = -168/11 + 121/11 = -47/11
Please help !!!!!!!!
Answer:
D
Step-by-step explanation:
Step-by-step explanation:
D
p(x)=o
p(x+2-2)=o
p(x)=o
what is the absolute value of 2.3
The absolute value of any positive number is that number itself.
If you take the absolute value of a negative number, then just erase the negative sign and you have your answer.
The absolute value is never negative. It represents distance from that value to 0 on the number line.
So saying |2.3| = 2.3 means the number 2.3 is exactly 2.3 units away from 0 on the number line.
Another example would be |-7| = 7 showing that from 0 to -7 is 7 spaces.
The required absolute number of 2.3 is also 2.3.
GIven that,
An absolute number of the value 2.3 is to be determined.
Functions are the relationship between sets of values. e g y=f(x), for every value of x there is its exists in a set of y. x is the independent variable while Y is the dependent variable.
The absolute number is defined as the outcome of the modulus function is called the absolute number or all natural numbers are examples of absolute numbers.
Here,
For the absolute value,
f(x) = |x|
f(2.3) = |2.3|
(since |x| = x or | -x | = x )
f( 2.3 ) = 2.3
Thus, the required absolute number of the value 2.3 is 2.3 itself.
Learn more about function here:
brainly.com/question/21145944
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Yolanda bought a rose bouquet. The equation C = 1.5r+6 represents the cost, C, of a rose bouquet that has r roses. Yolanda's bouquet
cost $30.
How many roses were in Yolanda's bouquet?
O A 16
B. 20
O c. 24
D. 26
O E 36
Answer:
A. 16 roses
Step-by-step explanation:
30 - 6 = 24
24 divided by 1.5 equal 16
r = 16
hopefully this helps you :)
pls give me brainlest :)
Camera: $110.95 Discount: 20% Sales tax: 5%
Step-by-step explanation:
You will pay $18 for a item with original price of $20 when discounted 10%. In this example, if you buy an item at $20 with 10% discount, you will pay 20 - 2 = 18 dollars.
1. Conrad spent $48 on art supplies. The canvas for each of his paintings is an additional $2. He plans to sell his paintings for $10. a. Write an equation that could be used to find the number of paintings (p) he will need to sell to break even.
Thanks
The equation for break even is 8P = 48
What is an Equation ?An equation is an expression that states the equality of two things expressed in different form.
In the given question
Conard spent $48 for art supplies
Canvas costs $2
He plans to sell his painting for $10
∴ Without the canvas his paintings costs $(10 - 2)
= $8
So, no. of paintings (P) to break even he needs to sell
8P = 48
P = 6
∴ Conard needs to sell 6 paintings to break even.
Learn more about Equations here :
https://brainly.com/question/12788590
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Find the value of b. Then find the angle measures of the pentagon.
b=
Question 2
The angle measures from least to greatest are
∘,
∘,
∘,
∘, and
∘.
Answer:
B = 90
Step-by-step explanation:
cause math lol.
helpppp
Which of the following statements is the most precise and correct to define perpendicular lines?
A. Two lines are perpendicular if they intersect.
o
B. Two lines are perpendicular if they meet at a single point such that the two lines make a "T".
o
C. Two lines are perpendicular if they meet at one point and one of the angles at their point of
intersection is a right angle.
Answer:
C
Step-by-step explanation:
you can add that they meet at a 90° angle
The population of Austin, Texas, was about 494,000 at the beginning of a decade. The population increased by 3% each year. Write an exponential growth model that represents the population y (in thousands) t years after the beginning of the decade. Find and interpret the y-value when t = 10.
Answer:
y(t) = 494 (1.03)^t
y(10) = 663,89
Step-by-step explanation:
An increase in population by 3% each year means that at the end of each year, the population is 1.03 times what it was at the start of the year
This increase in population continues for t years
Exponential growth model that represents the population y (in thousands) t years after the beginning of the decade is
y(t) = 494 (1.03)^t
Where,
y = population
t = number of years
Find y when t = 10
y(t) = 494 (1.03)^t
y(10) = 494 (1.03)^10
= 494 ( 1.3439)
= 663.8866
Approximately y(10) = 663.89
This means that after 10 years from when the population was 494,000, it increased to 663,89.
(-7x² + 3) – (-4x – 3)
if youre soliving to get x
2
-4x - 7x
-16x-7=-23
you answer should be a polynomial in standard form (x- 4) ( x + 7)
??? help plssss ????
Answer:
18
Step-by-step explanation:
12(3/2)=36/2=18
Answer:
18Step-by-step explanation:
[tex]12\left(\frac{3}{2}\right)\\\\\mathrm{Remove\:parentheses}:\quad \left(a\right)=a\\=12\times \frac{3}{2}\\\\\mathrm{Multiply\:fractions}:\quad \:a\times\frac{b}{c}=\frac{a\:\times\:b}{c}\\=\frac{3\times\:12}{2}\\\\\mathrm{Multiply\:the\:numbers:}\:3\times\:12=36\\=\frac{36}{2}\\\\\mathrm{Divide\:the\:numbers:}\:\frac{36}{2}=18[/tex]
What is the answer for 2/3 x -4 = -2
Answer:
x=3
Step-by-step explanation:
2/3x -4 = -2
2/3x = 2
(3/2)*(2/3x) = (2*3/2)
x=3
Answer:
x=3 I hate asking for things but may i have brainliest I need to rank up
Step-by-step explanation:
Step 1: Add 4 to both sides.
2/3x−4+4=−2+4
2/3x=2
Step 2: Multiply both sides by 3/2.
(3/2)*(2/3x)=(3/2)*(2)
then you get x=3
16-x=-5
Solve for x!!!!!!!
Answer:
x = 21
Step-by-step explanation:
Given
16 - x = - 5 ( subtract 16 from both sides )
- x = - 21 ( multiply both sides by - 1 )
x = 21
3
Find the equation of the line that passes through the point (4, 17) and is parallel to:
y= 5x + 2
****Hint: use the point-slope formula to help you*****
A store employee creates a display of sleds priced at $40 apiece. The store paid $32 for each sled. What is the mark-up percentage
Answer:
Mark-up percentage is 25%.
Step-by-step explanation:
From the question, the store bought each sled at $32 which is the cost price. The sled was display for sale at $40 apiece.
Mark-up percentage = [tex]\frac{selling price - cost price}{cost price}[/tex] x 100%
But,
selling price - cost price = $40 - $32
= $8
So that,
Mark-up percentage = [tex]\frac{8}{32}[/tex] x 100%
= 0.25 x 100%
= 25%
Therefore, the mark-up percentage is 25%.
Answer:
25%
Step-by-step explanation:
I dont understand this can you help
Answer:
C
Step-by-step explanation:
To answer a multiple choice question process of elimination can be very helpful
A isnt correct because CED is 90 degrees
B isnt correct since the line equals 180 degrees
C is correct because CED and AEC are a linear pair that add up to 180 degrees so if CED is 90 then so is AEC
Answer:
i did not understand it either
Step-by-step explanation:
but it means so like you would see what statement is ture so like say ced measured right then you would say it is right, you want to see what angel is right with this question your answer is the third answer
hope this help
Which of the following sets of numbers does V49 NOT belong?
Answer:
D.
Step-by-step explanation:
√49 = 7 by definition of square root.
7 is an integer, and all integers are real numbers.
7 is also rational as all integers are rational.
√49 is not an irrational number.
3х - 2y = 14
5х + бу =42
What’s this on a graph?
Answer:
Step-by-step explanation:
9x - 6y = 42
5x + 6y = 42
14x = 84
x = 6
30 + 6y = 42
6y = 12
y = 2
(6, 2)