consider first number is = x
formula,
(n / 2)(first number + last number) = sum,
7/2(x+x+6)= 945
2x+6= 945×2/7
2x+6 = 270
2x= 270-6
x=264/2= 132
Answer the smallest number is 132.
pls helpppp me
i shall give brainliest
Answer:
B
Step-by-step explanation:
A) -4
B) results in a non-terminating, non-repeating decimal, which is irrational
C) 2
D) 4
What is the determinant of k=[6 8]
[0 3]
-18
-8
10
18
SATELLITE DISH Suppose the receiver in a parabolic dish antenna is 2 feet
from the vertex and is located at the focus. Assume that the vertex is at the
origin and that the dish is pointed upward. Find an equation that models a
cross section of the dish.
a. x2 = -8y
b. x2 = 2y
c. x2 = 8y
d. y2 = 8x
Answer:
D) [tex]x^{2} =8y[/tex]
Step-by-step explanation:
Because the receiver of the parabolic dish antenna is 2 feet above the vertex, the parabola must be vertical. Therefore, we will use the equation [tex](x-h)^2=4p(y-k)[/tex] where [tex](h,k)[/tex] is the vertex of the parabola and [tex](h,k+p)[/tex] is the focus point. Since we are given that the receiver is 2 feet above the vertex which is located at the focus point and the vertex is [tex](0,0)[/tex] at the origin, then the focus point is [tex](0,0+p)[/tex] where [tex]p=2[/tex]. Therefore, the equation that models a cross section of the dish is [tex]x^{2} = 8y[/tex].
Melanie wants to create a pattern using a transformation that will change the orientation of a figure but not the orientation of verticals. Which transformation should she use?
Answer:
Melanie can translate the figure, rotate the figure, or reflect the figure. The figure would still be congruent.
Step-by-step explanation:
Hope that helps.... sorry if it doesn't..
What is the amplitude of this function f (x)?
f(x) = 3 cos (2x) + 5
Enter your answer in the box.
The amplitude of this function is 3.
What is the slope intercept form here!!!
Answer:
y=x
Step-by-step explanation:
How many teams haven't apperared in a super bowl
A. 2
B. 5
C.4
D. None
Answer:
c. 4
Step-by-step explanation:
I'm correct if I'm rwong
Plzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz
Answer:
Step-by-step explanation:
-3x - 5 = 16
add 5 to both sides of the equation
-3x = 21
divide both sides by -3
x = -7
---------------------
-4(y - 2) = 12
distribute the -4 to everything in the parentheses
-4y + 8 = 12
subtract 8 from both sides of the equation
-4y = 4
divide both sides of the equation by -4
y = -1
A loaf of bread costs $0.90. Each loaf has 15 slices. How much does each slice of bread cost?
Answer:
Each slice of bread costs $0.06.
Step-by-step explanation:
To find how much each slice of bread costs, you need to divide the cost (0.90) by how many slices there are (15). When you divide the two, you get 0.06. To check your answer you can do 0.06x15 and that will equal $0.90.
Answer:
0.9/15=$0.06 per slice
Also what is this 1910 when did a loaf of bread cost 90 cents????
NEED HELP ASAP!!!! WILL GIVE BRAINLIEST!!!!
The graph shows two lines, A and B, that Harry graphed.
Part A: How many solutions to the pair of equations for lines A and B does Harry find? Explain how he knows this.
Part B: Write the solution to Harry's equations of line A and B in (x, y) format? Explain to Harry how you know this is the solution for both equations. This is NOT the same as the explanation in Part A.
Answer:
We see two intersecting lines.
It means there is one solution, it is the intersection point.
Solution is (3, 4)
It was easy to find the solution as both lines and their intersection is visible on the graph.
With two parallel lines we would have no solutions and with overlapping lines we would have infinitely many solutions.
If you only have the equations of the lines you need to compare the slopes, if they are different it means lines are intersecting at one point hence one solution.
With same slopes and different y-intercepts there is no solution.
With same slopes and y-intercepts there is infinitely many solutions.
Which property of multiplication is shown?
9 × 0 − 6 × 0 = (9 − 6) × 0
Answer: Associative property
Step-by-step explanation: it is the same equation but they switched the numbers around on the other side of the equal sign so therefore its associative property
Answer:
Distributive property of multiplication
Step-by-step explanation:
The rectangles below are similar. Find the length of the missing side (giving brainliest and thanks to all!)
Answer:
A = 68/5 ≈ 13.6
Step-by-step explanation:
If they're similar, the fraction between their sides have to be the same:
5/2 = 34/A
34•2/5 = A
A = 68/5 ≈ 13.6
Can someone please help me with this, it’s urgent!!
Answer:
B n D
Step-by-step explanation:
A community group sells 2,000 tickets for its raffle. The grand prize is a car. Neil and 9 of his friends buy 10 tickets each. When the winning ticket number is announced, it is found to belong to Neil's group. Given this information, what is the probability that the ticket belongs to Neil?
Answer:
1/10 if its is in the group
Step-by-step explanation:
but if its as the whole thing it would be 1/200 because he has 10 and 10 of 2000 is 1/200
The probability that the winning ticket belongs to Neil is 5%.
What is Probability?It is a branch of mathematics that deals with the occurrence of a random event.
There are a total of 2,000 tickets, and Neil and his 9 friends bought 10 tickets each, so they bought a total of 100 tickets (10 tickets/person x 10 people = 100 tickets).
The probability of Neil's group winning the car is equal to the number of tickets they bought divided by the total number of tickets sold:
Probability = Number of tickets bought by Neil's group / Total number of tickets sold
Probability = 100 / 2000
Probability = 0.05 or 5%
Therefore, the probability that the winning ticket belongs to Neil is 5%.
To learn more on probability click:
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what is 0.975 as a common fraction
Determine whether quadrilateral ABCD with vertices
A(-4, -5), B(-3, 0), C(0, 2), and D(5, 1) is a trapezoid.
Step 1: Find the slope of AB. The slope of AB is
Step 2: Find the slope of DC. The slope of DC is
Step 3: Find the slope of BC. The slope of BC is
Step 4: Find the slope of AD. The slope AD is
The quadrilateral is a trapezoid because
A
nswer:
5
-1/5
2/3
6/9 -> 2/3
Two parallels,
Two slope lines.
Answer:
The Slope of AB: 5
The Slope of DC: -1/5
The Slope of BC: 2/3
The Slope of AD: 2/3
The quadrilateral is a trapezoid because (only one pair of opposite sides is parallel)
PlZ HELP !!!! if you can AWNSER either one if those please
Problem 1
The two angles 6x and 30 are vertical angles, so they are congruent or the same in measure.
6x = 30
x = 30/6
x = 5 is the answer
====================================================
Problem 2
The two angles form a straight angle which is 180 degrees. We consider them a linear pair (since they are adjacent and supplementary).
So,
5x+(3x+12) = 180
8x+12 = 180
8x = 180-12
8x = 168
x = 168/8
x = 21 is the answer
Does this graph show a function? Explain how you know. 6 2 8 6 4 2 0 -2 4 6 8 6 -8 A. Yes, there are no y-values that have more than one x-value. B. Yes; the graph passes the vertical line test. C. No; the graph fails the vertical line test. D. No, there are y-values that have more than one x-value.
Answer:
Option B.
Step-by-step explanation:
A function is a relationship that maps elements from a set (the domain, set of the inputs) into elements from another set (the range, set of the outputs), such that each element from the domain can be mapped into only one element from the range.
Remember that in the 2d case, the horizontal axis represents the values from the domain while the vertical axis represents the values from the range.
So, one criterion to check if a graph belongs to a function or not, is to see if there is a vertical line that intersects the graph at two different points, (because that would mean that a single input value has two different output values) if there is no vertical line that does that, then the graph shows a function. (this is called the vertical line test)
Now that we know all this, let's look at the graph for a second and see that yea, the graph passes the vertical line test, so the graph represents a function.
Then the correct option is B
(2x+8)-(x+8), answer please and thank you
Answer:
The equation simplifies to x
Step-by-step explanation:
(2x + 8) - (x + 8)
2x + 8 - x - 8
x
Hope this helped!
Volume How many fluid ounces are in each size?
1 cup = 8 oz. 1pint = 2 cups. 1 quart = 2 pints. 1 gallon = 4 quart
1 Pint = ________fl oz
Answer:
Answer:
Step-by-step explanation:
the system of equatuions 2y = 14 - 2x and y= -x+7 is graphed. what is the solution to the system of equations
Answer:
the solution is the whole line y = -x + 7
Step-by-step explanation:
both equations are identical
2y = 14 - 2x
=> y = 7 - x
which is exactly the same information as y=-x+7
so, there is no single crossing point. they are exactly covering each other. what "remains" is simply the whole line.
a store has 9 blue hats and 7 red hats for sale write the ratio of blue hats to all the hats
Answer:
9 : 7, or 9/16 to 7/16
Step-by-step explanation:
We know that there are 9 blue hats.
We know there are 7 red hats.
This is a 9 : 7 ratio.
In fraction form, we must find the total ratio, use that as the denominator, then take the seperate amounts, such as bluei adn red hats, and use that as the numerator:
9+7=denominator
denominator = 16
Blue hats = 9
Ratio of red = 9/16
Red hats = 7
Ratio of red = 7/16
Hope this helps!
Find the missing side of each triangle
Please help
Answer:
B) [tex]\sqrt{115}[/tex]
Step-by-step explanation:
Pythagoras is [tex]a^{2} +b^{2} =c^{2} \\[/tex]
Where C is the longest side. You have a and c so
[tex]14^{2}-9^{2} =x^{2} \\196-81=x^{2} \\\sqrt{115} =x[/tex]
How many solutions are there to the equation below?
8(x - 3) = 8x - 24
O A. 1
ОВ. О.
O C. Infinitely many
Answer:
[tex]x = 24 \div 8 \\ x = 3[/tex]
I think it was c
Answer:
i think c
Step-by-step explanation:
What is the slope of a line parallel to the line whose equation is
x + 2y = 10. Fully simplify your answer.
Answer:
The required slope is equal to -1/2.
Step-by-step explanation:
The given equation of line is :
x + 2y = 10
A line parallel to this line has the same slope. To determine the slope, solve for y to change the equation to slope-intercept form:
y = mx+b .....(1)
2y = 10 -x
Dividing both sides by 2.
[tex]y=(-\dfrac{1}{2})x+10[/tex] ....(2)
Comparing equations (1) and (2),
m = -1/2
Hence, the required slope is equal to -1/2.
Maya is flying a kite, holding her hands a distance of 3.5 feet above the ground and letting all the kite’s string play out. She measures the angle of elevation from her hand to the kite to be 34^{\circ}
∘
. If the string from the kite to her hand is 125 feet long, how many feet is the kite above the ground? Round your answer to the nearest tenth of a foot if necessary.
Answer:
The kite is 73.4 feet above the ground.
Step-by-step explanation:
125 sin 34=
Cross multiply.
x=69.899112...
x=69.899112...
{Add 3.5, the distance from the ground to her hand:}
Add 3.5, the distance from the ground to her hand:
69.899112...+3.5=
73.399112...
The kite is 73.4 feet above the ground.
A right angled triangle is a triangle (has three sides and three angles) in which one of the angles measure 90°.
Trigonometric ratios is used to show the relationship between the sides of the right angled triangle and its angles.
Let h represent the perpendicular distance from the top of the kite to her hand. The angle of elevation = 34°. Hence:
sin(34) = h/125
h = 69.9 feet
The distance from the kite to the ground = 69.9 + 3.5 = 73.4 feet
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match each problem to the inequality that models it! One choice will be used twice.
evaluate 25C22-24C21
Answer:
276
Step-by-step explanation:
25!/22!(25-22)! - 24!/21!(24-21)!
= 2300 - 2024
= 276
What is the area?
5 yd
2 yd
10 yd
square yards
Answer:
The area is always placed in square so the correct answer is square yards.
Which is a simplified form of the expression 6(2t – 3) + 3(t + 5)?
A. 11t - 2
B. 12t - 8
C. 9t - 2
D. 15t - 3
Answer:
it's option D.
Step-by-step explanation:
see attachment in case u need steps
Answer:
d
Step-by-step explanation:
