Answer:
Gina—her standardized score is higher than Colleen’s.
Step-by-step explanation:
Until the scale was changed in 1995, SAT scores were based on a scale set many years ago.
We solve this question using z score formula also know as standardized score formula which is given as:
z = (x-μ)/σ, where x is the raw score, μ is the population mean, and σ is the population standard deviation.
For Gina
Gina took the SAT in 1994 and scored 500 on the Math test.
For Math scores, the mean under the old scale in the 1990s was 470 and the standard deviation was 110.
x = 500
μ = 470
σ = 110
Hence, the z score is given as:
z = 500 - 470/110
z = 0.27273
Gina's z or standardized score is 0.27273
For Colleen
Her cousin Colleen took the SAT in 2013 and scored 530 on the Math test.
In 2013 the mean was 515 and the standard deviation was 116.
x = 530
μ = 515
σ = 116
Hence, the z score is given as:
z = 530 - 515/116
z = 0.12931
Colleen's z or standardized score is 0.12931
The person who did better relative to their peers is Gina and this is because her standardized score is higher than Colleen’s.
Will give 20 points if you answer correctly, will give brainliest! Please answer and EXPLAIN! Thanks
write the slope intercept form of an equation of the line that passes through the given point and is parallel to the graph of the equation (-3,5), y=-5x+3
a. y= 10x-5
b. y=-5x-10
c. y=-5x+10
d. y+1/5x-5
Please help! Thx!
Answer: B
Step-by-step explanation:
so for the slope to be parallel, it means it's the same slope as the given equation which is -5
using point slope, we can write a new equation
y -5 = -5(x+3)
y -5 = -5x-15
y = -5x-10
4 - 0.34
show your work
Answer:
5
Step-by-step explanation:
m(t) =
t2-8t-20/
t+5
m(5) =
a. 8.5
b. -8.5
C. 3.5
d. -3.5
Answer:
d. -3.5Step-by-step explanation:
[tex]m(t)=\dfrac{t^2-8t-20}{t+5}\\\\m(5)-\text{substitute}\ m=5:\\\\m(5)=\dfrac{5^2-8\cdot5-20}{5+5}=\dfrac{25-40-20}{10}=\dfrac{-35}{10}=-3.5[/tex]
Given: m∠PRS = 2x + 12
m∠SRT = 6x + 8
∠PRS and ∠SRT are a linear pair
Prove: m∠PRS = 52
-make sure to include statements and reasonings like it shows in the screenshot
Answer:
See Below.
Step-by-step explanation:
1) Given:
[tex]\angle PRS\text{ and } \angle SRT \text{ are a linear pair.}[/tex]
2) Definition of Linear Pair:
[tex]m\angle PRS+m\angle SRT=180[/tex]
3) Given:
[tex]m\angle PRS=2x+12[/tex]
4) Given:
[tex]\displaystyle m\angle SRT=6x+8[/tex]
5) Substitution Property:
[tex](2x+12)+(6x+8)=180[/tex]
6) Combine Like Terms:
[tex]8x+20=180[/tex]
7) Subtraction Property of Equality (subtract 20 from both sides):
[tex]8x=160[/tex]
8) Division Properety of Equality (divide both sides by 8):
[tex]x=20[/tex]
9) Given (this step is optional. You don’t have to include this):
[tex]m\angle PRS=2x+12[/tex]
10) Substitution:
[tex]\displaystyle m\angle PRS=2(20)+12[/tex]
11) Multiplication:
[tex]m\angle PRS=40+12[/tex]
12) Addition:
[tex]m\angle PRS=52[/tex]
Answer:
sorry i dont realy understand that
Step-by-step explanation:
how do you solve for x when you have this problem below please explain !!
Answer:
The value of x is 16
Step-by-step explanation:
We can clearly see in the diagram that a transversal is intersecting two parallel lines.
When a transversal intersects two parallel lines, eight angles are formed.
The angles which are in the same position on same side of each line intersected by the transversal, are called corresponding angles.
Corresponding angles are congruent.
So,
Angle 6x+4° and 100° will be congruent or equal
[tex]6x+4 = 100\\6x =100-4\\6x = 96\\\frac{6x}{6} = \frac{96}{6}\\x = 16[/tex]
Hence,
The value of x is 16
Help meeeeeeee!!!!!!!!!!’n
Answer:
A.
Step-by-step explanation:
Answer:
A. 5 adult tickets and 15 children tickets
Step-by-step explanation:
HELP FASTT!! Will give BRAINLIST
Simplify.
4to the third power x 4 to the fourth power
Over 4 to the ninth power
A) 4 to the 16th power
B) 4 to the 2nd power
C) 1 over 4 to the 2nd power
D) 1/4
Answer:
the answer to that is 1/4^2
You can just give an answer.
Find a rectangle so that its height is 1/5 of its width and its perimeter is 120.
Answer:
Step-by-step explanation: 50 x. 10
Help me with these please
Answer:
A) SAS
Step-by-step explanation:
The picture gives us that two sides are congruent. We can see that an angle is congruent as well because they share a common point at their tip.
If we look at just the area of intersection, it looks like an X. Think of the X as two lines intersecting. Each side equals 180°, and because both triangles are made up of those sides, we can conclude that the angles are congruent as well.
Hope this helps!
Carmen was scuba diving 115 feet below the surface of the ocean. She swam up 20 feet to
look at a colorful school of fish.
What is Carmen's position now relative to the surface of the ocean?
feet
Answer:
-115+20= -95 so, carmen is scuba diving 95 feet below surface level
Step-by-step explanation:
below surface level means negative
Answer:
The answer: - 95 DON'T FORGET THE NEGATIVE SIGN!
Step-by-step explanation:
Games at the carnival cost $2.50 each. The prizes awarded to winners cost $135.00. How many games must be played to make at least $45?
Question 1 options:
71
71.5
72
72.5
I WILL GIVE BRAINLIST POINTS
Answer:
72
Step-by-step explanation:
I DIVIEDE 180 DIVIEDED BY $2.50=72
Someone please help me to solve this (8.99 x 10^9) (3 x 10^-5) (-6 x 10^-5)
ax = 2x + 5
please explain
Answer: -1.5x
Step-by-step explanation: Um, I think your explanation would be to subtract 5 on both sides which would be -3, and then divide by two on both sides which equals -1.5, and -1.5 equals A, and the final answer is -1.5x.
Hope it helps!!!!
Evaluate the expression w² - v + 1 for w = -2 and v = -8.
Answer:
13
Step-by-step explanation:
-2(-2) - (-8) + 1
4 + 8 + 1 = 13
Answer:
13
Step-by-step explanation:
cause i did it and it was right
kaiuzumaki2004oxopxl
Answer:
is there free point. if is plz it shows nothing
A scooter travels 30 feet in 2 seconds at a constant speed.
What is the speed of the scooter in feet per second?
Answer:
15
Step-by-step explanation:
Since it goes 30 in 2 seconds, we need to divide 30 and 2 and end up with 15.
To make sure our answer is correct we know that 15 is one second, so we can add 15+15= which will give us 30, and will also land at 2
Brainliest pls
The speed of the scooter is 15 feet per second.
To calculate the speed of the scooter in feet per second, you can use the formula:
Speed = Distance / Time
The distance traveled by the scooter is 30 feet, and the time taken is 2 seconds.
Plugging these values into the formula, we get:
Speed = 30 feet / 2 seconds
Speed = 15 feet/second
Therefore, the speed of the scooter is 15 feet per second.
To learn more on Speed click:
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Find the values of the variables :)
Answer:
x = 6 , y = 4 , 2 units
Step-by-step explanation:
2y - 6 = y - 2 ⇒ y = 4
3x - 16 = y - 2
3x - 16 = 4 - 2
3x = 18 ⇒ x = 6
Length of sides of square is 2 units
In a survey of 1,300 people who owned a certain type of car, 260 said they would buy that type of car again. What percent of the people surveyed were satisfied with the car?
Answer:
[tex] \frac{satisfied \: peaple}{total \: peaple} \times 100\%[/tex]
[tex] \frac{260}{1300} \times 100\% \\ = 19.23076923\%[/tex]
D=
R=
Function?
Find the domain and range of each relation.
Answer:
Try to do it with mth way
Type the correct answer in the box. Use numerals instead of words. If necessary, use / for the fraction bar. Consider functions f and g. Evaluate the function composition.
Step-by-step explanation:
(f.g)(_1)=f(6)
=8/6+2
=8/8
=1
The value of (f o g)(-1) is 1 if the function f(x) = 8/(x + 2) and g(x) = 4x² + 2 the answer is 1.
What is a function?It is defined as a special type of relationship, and they have a predefined domain and range according to the function every value in the domain is related to exactly one value in the range.
We have:
Two functions:
f(x) = 8/(x + 2)
g(x) = 4x² + 2
g(-1) = 4(-1)² + 2
g(-1) = 4 + 2
g(-1) = 6
f(g(-1)) = 8/(x + 2)
f(g(-1)) = 8/(6 + 2)
f(g(-1)) = 8/8
f(g(-1)) = 1
Thus, the value of (f o g)(-1) is 1 if the function f(x) = 8/(x + 2) and g(x) = 4x² + 2 the answer is 1.
Learn more about the function here:
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write an equation for the line above
Answer:
y= -3x/5
Step-by-step explanation:
y=mx+b where m is the slope and b is the y-intercept
m= rise/run = -3/5 (go from one point to the other on the graph)
y-intercept is (0,0)
[1/2]^-1 +[1/3]^-1 +[1/4]^-1
is equal to
Answer:
9
Step-by-step explanation:
[1/2]^-1 +[1/3]^-1 +[1/4]^-1=9
You need to simplify the expression.
You end up with the answer: 9
a typical car releases 36 tons of carbon dioxide and six years at a constant rate how many times will a car release in 10 years ?
Answer:
60 Tons
Step-by-step explanation:
36 divided by 6 equals 6. So that six is used for the for extra years
36+6+6+6+6
The number of tonnes of carbon dioxide released in 10 years will be 60 tonnes.
What is the solution to the equation?The allocation of weights to the important variables that produce the calculation's optimum is referred to as a direct consequence.
A ratio is a group of sequentially ordered numbers a and b expressed as a/b, where b is never equal to zero. When two objects are equal, a statement is said to be proportional.
A typical car releases 36 tonnes of carbon dioxide and six years.
Let 'x' be the amount of carbon dioxide.
At a constant rate, the number of tonnes of carbon dioxide released in 10 years will be given as,
x / 10 = 36 / 6
Simplify the equation, then we have
x / 10 = 36 / 6
x / 10 = 6
x = 60 tons
The number of tonnes of carbon dioxide released in 10 years will be 60 tonnes.
More about the solution of the equation link is given below.
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The Ironman endurance race has a 2.4 miles swim. Javier can swim 0.5 miles in 20 minutes. If he can continue this pace, it will take him hours to finish the swim event.
Given :
The Ironman endurance race has a 2.4 miles swim.
Javier can swim 0.5 miles in 20 minutes.
To Find :
How much time in hours it takes to complete the race.
Solution :
Speed of Javier :
[tex]s=\dfrac{2.4}{\dfrac{20}{60}}\ mph\\\\s= 7.2\ mph[/tex]
Let, time taken to cover 2.4 miles is t .
So,
[tex]t = \dfrac{2.4}{7.2}\ hours\\\\t = 0.33\ hours[/tex]
Hence, this is the required solution.
what is the answer to 4(x + 1) = 4x + 10
Answer:
No solution
Step-by-step explanation:
First we would have to see if anything has to be distributed and yes the 4 in the expression 4(x + 1) has to be distributed to the x and 1. So we would multiply the 4 by x and 1. Now we have 4x + 4 = 4x + 10. We have to get the x's on 1 side of the equation so we would do the inverse of one of the x's and we can only subtract. So we can subtract 4x on both sides. So now we have
4 = 10. That isn't a correct statement so there is no solution.
4 does not equal 10.
Divide using partial products 52/5 =
Answer:
um.. ok the answer is 10 remainder 2
Step-by-step explanation:
5 goes into 52
10 times
Answer:
10.4
Step-by-step explanation:
Work out the area of the shape drawn below.
Give your answer correct to 2 decimal places.
Answer:
39.27
Step-by-step explanation:
Formula: PIEr^2/2
so 5 square which is 25.
then 25 times pie which is then divided by 2
39.27
If b(x) = -2(x-50), what is the value of b(20)?
Answer:
60
Step-by-step explanation:
-2(20-50)
-40 + 100 = 60
675 grams of sweets were distributed among 9 children. How much sweet was given to each child?
Answer:
75 Sweets
Step-by-step explanation:
To get the answer you have to divide the number of sweets by the number of children. If there are 675 grams and 9 children, then you divide 675/9 to get your answer of 75 sweets.
Each child was given 75 grams of sweets as per linear equation when distributed.
What is a linear equation?A linear equation is an equation where the highest degree of the variable is one.
Given, there are a total of 675 grams of sweets.
There are a total of 9 children among which the sweets is to be distributed equally.
Therefore, each children will get sweets of
(675 ÷ 9) grams
= 75 grams.
Therefore, each child will get 75 grams of sweets when it is distributed equally.
Learn more about a linear equation here: https://brainly.com/question/18467717
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I need help on this problem
Answer:
y² - 2y - 4x + 9 = 0 (*)
a = 1 b = -2 c = -4x + 9
Δ = b² - 4ac = 4 - 4(9 - 4x) = 4 - 36 + 16x = 16x - 32
if (*) have the solutions => Δ ≥ 0
⇔ 16x - 32 ≥ 0 ⇔ x ≥ 2
with x ≥ 2 => y = [tex]\frac{2+\sqrt{16x-32} }{2}=\frac{2+4\sqrt{x-2} }{2}=1+2\sqrt{x-2}[/tex]
or y = [tex]1-2\sqrt{x-2}[/tex]
Step-by-step explanation: