Answer:
- number of hours on video games and test scores
- average running speed and total race time
- outside temperature and amount of a heating bill
Step-by-step explanation:
1. number of hours on video games and test scores (negative correlation - as you spend more hours on video games, test scores might decrease)
2. speed of a car and minimum stopping distance (positive correlation - as the distance to the next stop increases, the speed of the car should increase)
3. average running speed and total race time (negative correlation - as you run for longer, your speed should decrease)
4. adult’s head circumference and age (positive correlation - as your age increases, your head size increases, too)
5. outside temperature and amount of a heating bill (negative correlation - as temperature increases, the heating bill decreases)
The two options with negative correlations are:
"Number of hours on video games and test scores" and "Outside temperature and amount of a heating bill"
Which relationship could have a negative correlation?A relation between two variables, x and y, has a negative correlation when if one variable increases, the other decreases.
From the options, the ones that can have a negative correlation are:
Number of hours on video games and test scores: Here as the number of hours that you play video games increases, it is possible that your test scores decrease, so we have a negative correlation.
Outside temperature and amount of a heating bill: As the outside temperature decreases, the amount that you pay in heating increases, so again, we have a negative correlation.
If you want to learn more about correlations:
https://brainly.com/question/4219149
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what are the coordinates of Point W?
Answer:
I think it's (2,9)
Step-by-step explanation:
Answer:
(2, 9)
Step-by-step explanation:
You can see at the end it says 6. You would start with point Z(2, 3) and move up 6 units. This will leave you with (2, 9).
I need some help with this problem
Answer:
a
Step-by-step explanation:a because its interst7s
Answer:
A.
Step-by-step explanation:
line A never intersects line B
given that 1 pound is is $1.62 how much is $405 in pounds
Answer:
250 pounds
Step-by-step explanation:
405 ÷ 1.62 = 250pounds
Answer:
£250
Step-by-step explanation:
$405 ÷ 1.62 = £250
What is the slope of the line that passes through the points (10, 2) and (19,14)?
Write your answer in simplest form.
Answer:
4/3
Step-by-step explanation:
Slope is calculated by [tex]\frac{y1-y2}{x1-x2}[/tex] so now you pul the points (10,2) and (19,14) into that.
[tex]\frac{14-2}{19-10}[/tex] = [tex]\frac{12}{9}[/tex]
12/9 can be simplified to be 4/3
Answer:
4/3
Step-by-step explanation:
Given,
Two points are (10,2) and (19,14)
To find the slope of the line passing through these points.
Use a ratio box to solve this problem. The cost of a 10-minute call to Boise decreased by 20%. If the cost before the decrease was $3.40, what was the cost after the decrease?
Answer:
$2.72
Step-by-step explanation:
If the price decreased by 20%, the final price will be 100% - 20% = 80% of the inicial price.
So, we can write the ratio box:
Old value New value
Percent value: 100% 80%
Value: $3.40 X
Then we can solve with a rule of three:
100% -> $3.40
80% -> X
X = 0.8 * 3.4 = $2.72
Answer:
The cost after the 20% decrease is $2.72
Step-by-step explanation:
Here, we are trying to calculate the cost of a 10-minute call before there was a decrease in the amount charged for the call.
We proceed mathematically as follows,
To calculate percentage decrease, we can employ the formula;
(old value- new value)/old value * 100%
Here our old value or cost was $3.40 and the percentage decrease is 20%
we plug these values;
Let the new cost it value be x
(3.4-x)/3.4 * 100 = 20
100(3.4-x) = 20 * 3.4
340 - 100x = 68
100x = 340 -68
100x = 272
x = 272/100
x = $2.72
In Tim's garden, the flowers are
only red, white, yellow or blue.
The chart shows the number of
red, white and yellow flowers.
The total number of flowers is 30
12
10
a) How many blue flowers are there?
6
b) Write down the mode.
(ive answered A anyone know b?)
Answer:
MODE is the number which appears most often in a set of numbers. Here no number is repeated. So, there is no MODE
｡☆✼★ ━━━━━━━━━━━━━━ ☾
As the other user stated, the mode is the value that appears the most
Simply look for which colour has the most number of flowers
Thus, the mode would be "yellow"
Have A Nice Day ❤
Stay Brainly! ヅ
- Ally ✧
｡☆✼★ ━━━━━━━━━━━━━━ ☾
What is the area of the figure below? Use 3.14 for pi. Round your answer to the nearest hundredth.
Answer:
area of the figure ≈61.23 cm² to the nearest hundredth
Step-by-step explanation:
To find the area of the figure, we will follow the steps below;
Looking at the figure, we will see that the figure comprises of both semi-circle and a parallelogram
area of figure = area of semicircle + area of parallelogram
first, we will find the area of the semi-circle
area of a semi-circle = πr² /2
from the diagram given, diameter = 7cm
but diameter = 2r, this implies that radius r = d/2, hence radius r = 7/2 = 3.5 cm
π = 3.14
Lets insert the values into the formula
area of a semi-circle = πr² /2
=3.14×3.5² /2
=3.14×12.25 /2
=19.2325 cm²
Area of a parallelogram = b×h
where b = base and h = height
from the figure given, base b = 7cm and height h = 6 cm
Lets insert the values into the formula
Area of a parallelogram = b×h
= 7×6
=42 cm²
area of the figure = area of semicircle + area of parallelogram
=19.2325 cm² + 42 cm²
=61.2325 cm²
≈61.23 cm² to the nearest hundredth
area of the figure ≈61.23 cm² to the nearest hundredth
Solve:
4
3
x −4 = 5 + x
Answer:
undefined
x= no solutions
Step-by-step explanation:
x-4=5+x
-4=5
undefined
Answer:
Isolate the variable by dividing each side by factors that don't contain the variable.
Exact Form:
x=3/14
Decimal Form:
x=0.2142857
Step-by-step explanation:
What is the slope of the given equation y = -2x - 5
Answer:
-2 over -2
Step-by-step explanation:
because you have rise over run and if you gave -2 over -2 you would write it as just -2
Answer:
-2
Step-by-step explanation:
The equation for this case is y=mx+b
In this case the m or slope is -2
factor the trinomial -3x^2-15x+42
Answer:
3(−x+2)(x+7)
Step-by-step explanation:
Factor −3x2−15x+42
−3x2−15x+42
=3(−x+2)(x+7)
Can someone pls help me ASAP!
Answer:
No
Step-by-step explanation:
Answer: NO
Step-by-step explanation: Put in (-7) in place of x, and (7) in place of y in the equation If the equation does not equal -2, it is not a solution. If it does equal -2, it is a solution.
(-7,7)
6x+9y=-2
Plug in -7 for x and 7 for y.
6(-7)+9(7)=-2?
Solve the equation.
-42+63= -21
So, (-7,7) is not a solution to this equation.
Mark me brainliest! :D
VOLUME of Rectangle !!
Fill in the blanks -------
1. Length is 6.0, Width is 3.2, HEIGHT ?? ( ANSWER ) total volume 96 cm .
FIND THE HEIGHT HERE !!
2.LENGTH ?? ( ANSWER ) width is 2.0, height 1.1 total volume 22 cm .
FIND THE LENGTH HERE !!
3. length is 12.0, WIDTH ?? ( ANSWER ), Height is 4.0 and the total volume is 120 cm.
FIND THE WIDTH HERE !!
PLEASE....HELP !!! WRITE PROPERLY PLEASE... CORRECT ANSWER PLSS...
Answer:
Step-by-step explanation:
1. V= length*width*height
96 = 6.0*3.2*h
96=19.2h divide both sides by 19.2
height =5 cm
2. V=l*w*h
22 = l*2.0*1.1
22=l*2.2
l= 10 cm
3. V= L*w*h
120 = 12.0*w*4.0
120=48*w
w= 2.5 cm
Sandra saves 9% of her salary for retirement this year salary was 1000 more than in her previous year and she saved $4050 what was your salary in the previous year
Answer:
$44,000
Step-by-step explanation:
The statement indicates that Sandra saves 9% of her salary and she saved $4,050 this year. That means that the 9% of her salary, x, is equal to $4,050. You can write the following:
x*0.09= 4,050
Now, you can isolate x to find her salary this year:
x=4,050/0.09= 45,000
Then, you have that this year salary was 1000 more than in her previous year. As you have found her salary for this year, you can subtract 1,000 from it to find her salary in the previous year:
45,000-1,000= 44,000
According to this, the answer is that her salary in the previous year was $44,000.
Equation with angle addition can someone please answer I need help please
Answer:
99°
Step-by-step explanation:
We know that angles on a straight line add up to 180° so we can set up an equation to find the value of x.
In an equation it's important to do the operation you want to on both sides because if you do an operation on one side only you will end up changing the whole equation and that will make the value of x wrong so its an important rule to remember.
8x - 13 + 7x - 17 = 180
→ Simplify
15x - 30 = 180
→ Add 30 to both sides to isolate 15x
15x = 210
→ Divide both sides by 15 to isolate x
x = 14
But we are not finished, the specifies us to find ∠MON and we have only found the value of x so we have to substitute x back into 8x - 13 to find the value of ∠MON
8x - 13
→ Substitute x = 14 back into into the expression
8 × 14 - 13
→ Simplify
112 - 13 = 99
So the value of ∠MON is 99°
If the legs of an isosceles right triangle have a length of 15 StartRoot 2 EndRoot ft, what is the length of the hypotenuse? 7.5 feet feet feet 30 feet
Answer:
The length of the hypotenuse is 30 feet
Step-by-step explanation:
Here, we are to calculate the length of the hypotenuse of an iscosceles right triangle.
For the triangle to be isosceles, it means that the opposite and the adjacent are equal in length.
Now, to calculate the value of the hypotenuse, we make use of the Pythagoras’ theorem which states that the square of the hypotenuse is equal to the sum of the squares of the other two sides.
Mathematically;
let’s say the hypotenuse is length h feet
h^2 = {15√(2)}^2 + {15√(2)}^2
h^2 = (225 * 2) + (225 * 2)
h^2 = 450 + 450
h^2 = 900
h = √(900)
h = 30 feet
Answer:
30 feet
Step-by-step explanation:
The three angles of a triangle form an A.P. If the largest angle is twice than the smallest angle find theee angles of that triangle
Answer:
Let the angles be (a-d), a , (a+d)
a-d + a + a + d = 180 (angle sum property)
3a = 180
a = 60
Given:
a+d = 2(a-d)
60 + d = 2(60 - d)
60 + d = 120 - 2d
3d = 120 - 60
d = 20
Angles are : 40 , 60 , 80
Can someone help me out with this?
Answer:
i think it is the 3rd one though i am not sure sorry
Step-by-step explanation:
if it is not the 3rd one then it is the 1st one
find the surface area of 8 meters high 12 meters width an 12 meters length
Answer:
[tex]672m^2[/tex]
Step-by-step explanation:
[tex]A=2(wl+hl+hw)=2*(12*12+8*12+8*12)=672m^2[/tex]
Help please!!!!! I hate this part of volume of pyramids :/
Answer:
h = 6 cm
Step-by-step explanation:
The volume (V) of a pyramid is calculated as
V = [tex]\frac{1}{3}[/tex] Ah ( A is the area of base and h the height )
Here A = 3 × 2 = 6 cm² and V = 12 , thus
[tex]\frac{1}{3}[/tex] × 6 × h = 12, that is
2h = 12 ( divide both sides by 2 )
h = 6 cm
Will wanted to make some brownies using the pan shown below. A rectangular prism with a length of 9 inches, width of 8 inches, and height of 1.5 inches. What is the maximum amount of brownie batter that Will can pour into the pan, in cubic inches? 37 54 108 216 (50 points)
Answer:
108
Step-by-step explanation:
[tex]V=8*1.5*9=108[/tex]
Answer:
C - 108
Step-by-step explanation:
i just did it on edge 2020 i hope it helps :)
find product simplified form: (x√y + z) (x√y - z)
x^2y - z^2
x^2y + 2zx√y - z^2
x^2y - 2^2
x^2y^2 - z^2
Answer:
[tex]x^{2}y-z^{2}[/tex]
Step-by-step explanation:
Apply [tex](a+b)(a-b) = a^{2} -b^{2}[/tex] where [tex]x\sqrt{y}[/tex] is [tex]a[/tex] and [tex]z[/tex] is [tex]b[/tex].
[tex](x\sqrt{y} )^{2}-z^{2}[/tex]
[tex](x\sqrt{y} )^{2}=x^{2}y[/tex]
[tex]x^{2}y-z^{2}[/tex]
Hope this helps! :]
I really want to thank you for the answer and explanation.
Mario paid $44.25 in taxi fare from the hotel to the airport. The cab charged $2.25 for the first mile plus $3.50 for each additional mile. How many miles was it from the hotel to the airport?
Answer:
12 miles
Step-by-step explanation:
2.25+3.50x=44.25
3.50x=42
x=12
The Zearn Fair charges $1.75 for entrance and $1.05 for each ride. Mr. Sawicki brings $20 with him to the fair. What is the greatest number of rides Mr. Sawicki can go on if he uses $2.50 for food? How much money can Mr. Sawicki spend in total
Step-by-step explanation:
So
Total money = 20
Entrance fee = 1.75
Food = 2.50
Ride = 1.05
Amount spend = 1.75 + 2.05 = 3.8
Left for rides = 20 - 3.8 = 16.2
So rides = 16.2 ÷ 1.05 = 15
I think atleast 15 rides
Solve and graph this system of equations x+2y=5 and 3x=15-6y
Answer:
(x,y)=(5-2y,y), y belongs to all real numbers
Step-by-step explanation:
x=5-2y
3x=15-6y
3(5-2y)=15-6y
15-6y=15-6y
y∈All Real Numbers
(x,y)=(5-2y,y), y∈All Real Numbers
I am thinking of a positive integer that is 3 less than 3 times another number. The product
of my number and Ihe other number is 90. What is my number?
Answer:
15
Step-by-step explanation:
Write an equation expressing the given relationship. Solve it to find the numbers.
__
setupLet x represent "another number." Then the number I'm thinking of is ...
(3x -3)
and the product of that and "the other number" is 90:
x(3x -3) = 90
solutionx(x -1) = 30 . . . . . . divide by 3
We know the factors of 30 are ...
30 = 30·1 = 15·2 = 10·3 = 6·5
Of these factor pairs, the numbers that differ by 1 are 6 and 5. "The other number" is 6, and "my number" is 90/6 = 15.
My number is 15.
What is the sum of the measures of the interior angles of this heptagon? A 7-sided figure. 720 degrees 900 degrees 1,080 degrees 1,260 degrees
Answer:
900
Step-by-step explanation:
Answer:900
Step-by-step explanation: you add all the sides up which is 7 then subtract by 2. next you multply 5 because the difference of 7 and 2 is 5 then do 5 times 180.
what is 1 plus 1 pleaze 100 points i am in 6th grade and still can't find it out
Answer:
1 plus 1 is 2
Step-by-step explanation:
If you can download this app and type this question, I am pretty sure you can figure it out
Answer:
1+1=2
1+1=2
1+1=2
1+1=2
1+1=2
1+1=2
1+1=2
In ΔXYZ, the measure of ∠Z=90°, the measure of ∠X=65°, and ZX = 4.8 feet. Find the length of YZ to the nearest tenth of a foot.
Answer:
10.3
Step-by-step explanation:
\text{SOH-CAH-TOA}
SOH-CAH-TOA
\tan X = \frac{\text{opposite}}{\text{adjacent}}=\frac{x}{4.8}
tanX=
adjacent
opposite
=
4.8
x
\tan 65=\frac{x}{4.8}
tan65=
4.8
x
4.8\tan 65=x
4.8tan65=x
Cross multiply.
x=10.2936\approx \mathbf{10.3}\text{ feet}
x=10.2936≈10.3 feet
Type into calculator and round to the nearest tenth of a foot.
X
Y
Z
4.8
10.3
(adjacent to ∠X)
(opp. of ∠X)
(hypotenuse)
65°
Solve the following: 3r+18=6+5r What is 'r' equal to?
Answer:
r = 6
Step-by-step explanation:
The equation is 3r + 18=6 + 5r. First, you have to get the coefficient on one side because it will be easier to solve. In order to do so, I subtract 3r from both sides. The equation is now 18=6 + 2r. The next step is to get the constant which is 6 to the left side. You subtract 6 from both sides. You are left with 12=2r. All you have to do now is to get r alone. In order to do that you have to divide both sides by 2. The answer would be 6. Hope you find this helpful!
6 times a number is 27 less than the square of that number. Find the
positive solution.
Answer:
x = 9
Step-by-step explanation:
To solve these problems, you first set up an equation representing the information given.
6x = x² - 27
This turns into a quadratic equation which you need to factor out.
0 = x² - 6x - 27
You want to choose two numbers that multiply to -27, and add up to -6
0 = (x - 9)(x + 3)
If you're unfamiliar with factoring, you take the opposite sign of the number in the parentheses because it's a shortcut when setting it equal to 0.
x = 9, -3
Since it asks for the positive solution only, the answer is x = 9.
I hope this helps!