Answer:
let distance between the two stops be d
so
avg. speed for whole journey = total distance/total time
= ( 2d) / ( d/40 + d/50)
= 2/ (1/40+1/50)
= 2 / ( 90/ 200)
= 2× 200/90
= 40/9 mph
Hey, I need some help with this:
Give an example of what an inverse operation is and how they are used in solving equations
Inverse operations are an operation that undoes each other. For example, addition and subtraction, multiplication and division, squares and square roots.
For example, we have the equation:
2 + 2 = 4
The inverse of this equation is:
4 - 2 = 2
Best of Luck!
What is the mean absolute deviation of 24,30,36,42,48,54
Complete the equation of the line whose y-intercept is (0,-1) and slope is 4.
y= ?
Answer:
y = 4x -1
Step-by-step explanation:
The slope intercept form of a line is
y = mx+b
where m is the slope and b is the y intercept
y = 4x -1
10:09 + 08:45 + 0946 + 09:55 =
Answer:
27 : 1000 : 55
Step 1:
Add the expresisons.
PLEASE HURRY!!IM BEING TIMED!WILL NAME BRAINLIEST!!
The table and graph show that each cracker in a package has 7 calories.
Crackers and Calories
crackers(X) calories(Y)
1 7
2 14
3 21
4 28
Which statement about the graph is true?
A.)The number of crackers is the dependent variable, and the number of calories is the independent variable.
B.)The point (42, 6) is on the line.
C.)The number of crackers are graphed on the y-axis, and calories are graphed on the x-axis.
D.)The two variables are the number of crackers and the number of calories.
(Picture not option!just a graph!)
Answer:
D.)The two variables are the number of crackers and the number of calories.
Step-by-step explanation:
The number of crackers is the independent variable, and the number of calories is the dependent variable.
The point (6, 42) is on the line
The number of crackers are graphed on the x-axis, and calories are graphed on the y-axis.
Find the 13th term in the following
arithmetic sequence :
2, 10, 18, 26, ...
Answer:
98
Step-by-step explanation:
This is an arithmetic sequence
The common difference is 10-2 =8
a1 = 2
an = a1+d(n-1)
an = 2+8(n-1)
we want the 13th term
a13 = 2 +8(13-1)
=2+ 8*12
= 2+96
= 98
8 cm
6 cm
What’s the area of the triangle? 8 on the side 6 on the bottom?
Answer:
Multiplication
Step-by-step explanation:
Which technique is most appropriate to solve this equation?
x2 + 6= 31
Question 2 options:
quadratic formula
zero product property
square root property
Answer:
Square root property
Step-by-step explanation:
The given equation is :
[tex]x^2+6=31[/tex]
We need to write the most appropriated technique to solve the above equation.
Subtracting both sides of the above equation by 6 such that,
[tex]x^2+6-6=31-6\\\\x^2=25[/tex]
Now taking square root on both sides we get :
[tex]x=\sqrt{25}[/tex]
The square root property is used here, such that the value of x is :
[tex]x=\pm 5[/tex]
answer with work pls!!
Answer:
The surface area of the triangular prism is 24 mi².
Step-by-step explanation:
A surface area is the sum of the areas of all faces on a 3D shape.
A triangular prism has 5 faces consisting of three rectangular sides and two triangular faces.
To find the surface area of the rectangular sides, you multiply the length by the height.
5x1=5
4x1=4
3x1=3
5+4+3=12
the surface area of the rectangular sides is 12 mi²
To find the surface area of the triangular faces, you can use the formula, A=1/2bh, where A is the surface area, b is the base, and h is the height.
A=1/2 · 3(base) · 4(height)
Since there are two triangular sides you multiply this by 2, which cancels out the 1/2 since 1/2 x 2 = 1.
A = 3 · 4
A = 12
the surface area of the triangular faces is 12 mi²
Add up the total surface area of the rectangular sides and triangular faces.
12 + 12 = 24
Hope this helps ;D
Pls mark as brainliest?
The point (-1,10) lies in which quadrant
Answer:
the second quadrant.
Step-by-step explanation:
Answer:
Look up a grid and find out. If you don’t know how to number them search that up too and tell you teacher he or she or they are failing you
Step-by-step explanation:
Ahah lol
Part A: Which function(s) could have at most 1 x-intercept? Select all that apply.
Linear
Select a Value
Linear
Quadratic, f(x) = x2 – 5x - 2
Exponential, Linear, y = 2x + 4, f(x) = 3.47
y = 2x + 4, Exponential
f(x) = x2 – 5x – 2, Linear
f(x) = 3.4"
Answer:
y = 2x + 4Step-by-step explanation:
The linear functions are the ones that can have at most 1 x-intercept. Specifically, slant lines and vertical lines have this characteristic.
The quadratic function doesn't have this characteristic because there are cases where it intercepts x-axis at two points (concave down).
Additionally, the exponential function doesn't have any x-intercept, because its range is restricted.
Therefore, the right asnwer is the linear function
The function that could have at most 1 x-intercept is y = 2x + 4.
What is a linear function?It is the function that can have at most 1 x-intercept. When slant lines and vertical lines should contain the attributes.
The quadratic function doesn't have this attribute since there are cases where it intercepts the x-axis at two points that represent concave down.
Moreover, the exponential function doesn't have an x-intercept, since its range is restricted.
Therefore, it should be a linear function.
Learn more about function here: https://brainly.com/question/10684895
A slice is made perpendicular to the base of a right rectangular pyramid through the vertex as shown below. What is the shape of the cross section? What is the area of the cross section? Explain with complete sentences and proper grammar.
Answer:
Shape: Triangle
Area: 27.5 cm
Step-by-step explanation:
Area formula for a triangle: b(base) x h(height) / 2
so, 5(11)/2 = 55/2= 27.5
Look at this set of 5 numbers:
5 3 5 5 6
By how much would the range increase if the number 8 were added to the set?
Answer:
The range would be increased by 2
3,5,5,5,6
The range for that set would be 3.
If 8 were added... 3,5,5,5,6,8
The range for that set would be 5.
Which choice is equivalent to the quotient shown here for acceptable values of x?
Answer:
(D)
Step-by-step explanation:
Equivalent expressions are expressions that have equal values
The equivalent expression of [tex]\sqrt{8x^2 } \div \sqrt{3x}[/tex] is [tex]\sqrt{\frac{8x}{3}}[/tex]
The expression is given as:
[tex]\sqrt{8x^2 } \div \sqrt{3x}[/tex]
Represent the expression as a quotient
[tex]\sqrt{8x^2 } \div \sqrt{3x} = \sqrt{\frac{8x^2}{3x}}[/tex]
Evaluate the quotient
[tex]\sqrt{8x^2 } \div \sqrt{3x} = \sqrt{\frac{8x}{3}}[/tex]
Hence, the equivalent expression of [tex]\sqrt{8x^2 } \div \sqrt{3x}[/tex] is [tex]\sqrt{\frac{8x}{3}}[/tex]
Read more about equivalent expressions at:
https://brainly.com/question/2972832
help me plz now i would like it and vote for it if right
Answer:
4
Step-by-step explanation:
2^4 - (2^3 +2^2)
Exponents
16 - (8+4)
Parentheses
16 - (12)
Subtract
4
Which statement is correct using "is equal to" (=)?
Answer:
B) 6 boxes of 9 pineapples = a total of 54 pineapples.
Step-by-step explanation:
We have to multiply the number of pineapples by the number of boxes the options give.
A is not the correct answer.
[tex]4 * 8 = 36\\32\neq 36[/tex]
B is correct.
[tex]6 * 9 = 54\\54 = 54[/tex]
C is incorrect.
[tex]12 * 8 = 120\\96 \neq 120[/tex]
D is incorrect.
[tex]16 * 5 =90\\80\neq 90[/tex]
Your best option is B.
Brainilest Appreciated.
What is the surface area of a cylinder with base radius 4 and height 7?
Either enter an exact answer in terms of TT or use 3.14 for it and enter your answer as a decimal.
7
Help me plese
Answer: The surface area of the cylinder is ≈276.46
True or false the focal length F is the directed distance from the vertex (h, k), to the focus of the parabola
Answer:
true
Step-by-step explanation:
The product of two consecutive integers is 2 more than two times their sum
What is the length of AB?
Answer:AB =10
Step-by-step explanation:
A cylinder has a volume of 100 (pi) cubic cm. It has a height of 4 cm. What is the length of its diameter?
Answer:
5.64
Step-by-step explanation:
v=pi(r)2h
hope this helps
Consider two unique parallel lines. What aspects of
these two lines are the same? What aspects of these two
lines would have to be different? Explain your reasoning
Done
Intro
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231 PM
5/28/2020
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ELE
Answer:
Step-by-step explanation:
Two parallel lines will have the same slope. The slopes of parallel lines have to be equal. The y-intercepts of those two lines have to be different, otherwise they would be the same line. The x-intercepts of the parallel lines would also be different.
can someone help with this please,, also explain if you can..
Answer:
story 1
Step-by-step explanation:
because it says 2 higher than -2 so -2+2 is 0
A proportional relationship is shown in the table below: x 0 3 6 9 12 y 0 0.5 1.0 1.5 2.0 What is the slope of the line that represents this relationship? \qquad Graph the line that represents this relationship.
Answer:
Take two point from the table, doesn't matter which ones, because this is linear. I will choose (0,0) and (3,.5).
Now follow the equation for slope: m = change in y / change in x.
[tex]\frac{y2-y1}{x2-x1}[/tex]
[tex]\frac{.5-0}{3-0}[/tex]
[tex]\frac{.5}{3}[/tex]
[tex]\frac{1}{6}[/tex]
The slope is 1/6. m=1/6
Its y-intercept is at 0. b=0
So the equation is y = 1/6x. The graph is attached.
Which is an x-intercept of the graphed function?
O(0, 4)
0 (-1.0)
Q (40)
(0,-1)
Answer:
can show me the graph plz
Step-by-step explanation:
Please help!! I can confused on which choice is the correct answer.
Answer:
cba is a secant, although the point barely goes through c
Step-by-step explanation:
a secant is a straight line that intersects a curve at 2 or more points. :)
Answer:
It's the last one, CBA is a secant.
Step-by-step explanation:
A secant means that it's a line or figure that goes through a shape. CBA is going through circle O.
Which inequality is true for x = 2?
A) 6x + 20 < 29
B) 7x − 10 < 11
C) 14x + 10 < 37
D) 15x − 18 < 12
Answer: d.
Step-by-step explanation:
Add 18 to both sides.
15x<12+18
Simplify 12+18 to 30.
15x <30
Divide both sides by 15.
x < 15/30
Simplify 30/15 to 2.
x < 2
The inequality 15x − 18 < 12 is true for x = 2
What is inequality?A relationship between two expressions or values that are not equal to each other is called inequality.
Given that, are some inequalities, we need to find which of them is true for x = 2
a) 6x + 20 < 29
Solving for x,
6x + 20 < 29
6x > 9
x > 3
b) 7x − 10 < 11
7x < 21
x < 3
c) 14x + 10 < 37
14x > 27
x > 27/14
d) 15x − 18 < 12
15x < 30
x < 2
Hence, the inequality 15x − 18 < 12 is true for x = 2
Learn more about inequality, click;
https://brainly.com/question/30228778
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it me again I need help
Answer:
85%
Step-by-step explanation:
He hit it 17/20
We want that as a percent
Multiply by 5/5
17/20*5/5 = 85/100
Percent means out of 100
85%
Answer:
85
Step-by-step explanation:
P(hit) = 17/20 × 100
85%
Which expression is equivalent to 5x + 5y − 2z? Which property justifies the expressions being equivalent?
A) 5(x + y) − 2z; distributive property
B) 5(x + y − 2z); distributive property
C) 8xyz; subtraction property
D) 10xy − 2z: associative property
Answer:
5(x + y) − 2z; Distributive Property
Step-by-step explanation:
The coefficient for both 5x and 5y is 5; therefore, use the distributive property to rewrite the sum as 5(x + y).
Answer:
A) -4z^3+4z^2+6z+35
Step-by-step explanation:
A concession stand sells 50 drinks , of which 19 are orange juice What is the probability that the next drink sold be orange juice ? Write your answer as a fraction decimal or percent
Answer:
ummmmmmmmmmmmmmmmmmmmmmmmmmmmmm
Step-by-step explanation:
i d
