Answer:
7
Step-by-step explanation:
Working backwards:
19 + 9 = 28
28/ 4 = 7
Checking work:
7 x 4 = 28
28 - 9 = 19
Please help!!!! ive been trying to get help for almost 2 days and I have yet to get an actual answer :(. Please try to show some work if you can, thank youu
49. [tex]x = \dfrac{1}{a}[/tex] and [tex]y = 3[/tex]
50. [tex]x = \dfrac{1}{2a}[/tex] and [tex]y = \dfrac{1}{b}[/tex]
Step-by-step explanation:
We are going to solve these systems of equations using the elimination method.
49. Given:
[tex]5ax + 4y = 17[/tex] (1)
[tex]\:\:ax + 7y = 22[/tex] (2)
Multiply Eqn(1) by 7 and multiply Eqn(2) by -4 to get
[tex]\:\:35ax + 28y = 119[/tex]
[tex]-4ax - 28y = -88[/tex]
Adding the two equations above, we get
[tex]31ax = 31 \Rightarrow x = \dfrac{1}{a}[/tex]
Substituting this value for a into Eqn(2), we get
[tex]y = 3[/tex]
50. Given:
[tex]4ax + \:\:by = 3[/tex] (3)
[tex]6ax + 5by = 8[/tex] (4)
Multiplying Eqn(3) by -5, we get
[tex]-20ax - 5by = -15[/tex]
[tex]\:\:\:\:\:\:6ax + 5by = \:\:8[/tex]
Adding the two equations above, we get
[tex]-14ax = -7 \Rightarrow x = \dfrac{1}{2a}[/tex]
Plugging in the value of x into Eqn(3), we get the value for y as
[tex]4a(\frac{1}{2a}) + by = 3[/tex]
or
[tex]2 + by = 3 \Rightarrow y = \dfrac{1}{b}[/tex]
The fact that the sampling distribution of the sample mean can be approximated by a normal probability distribution whenever the sample size is large is based on the _____.
Answer:
can you add a pic
Step-by-step explanation:
4) 4+ 1 =
a) 5
b) 572
12
c) 51
d) 572
6
12
Answer:
4+1=5
Step-by-step explanation:
Note down the below rules
(+)(+)=(+)(-)(+)=(-)(+)(-)=(-)(-)(-)=(+)Which description matches the object?
O A. The object is a square with a circle inside of it. Each side of the
square is a diameter of the circle.
B. The object is a circle with a square inside of it. The sides of the
square are radii of the circle.
C. The object is a circle with a square inside of it. The sides of the
square are chords of the circle.
D. The object is a circle with a square inside of it. One side of the
square is a diameter of the circle.
whats the answer can someone answer please
Answer:
b and c
Step-by-step explanation:
Explain how you can write 4.1 as a/b
Answer:
ax + by
Step-by-step explanation:
i hope its correct
if its wrong then im sorry :)
A grocery store has five different packages of bottled water.Which is the best deal available on bottled water at this grocery store?
Answer:
Step-by-step explanation:
First, check the amount of water in each one and the price. Which ever one has the lowest price for more water has the best deal.
:) Hope this helps
Solve the Linear Quadratic system of equations
y=x^(2)+2x-9
y=-2x+3
9514 1404 393
Answer:
(x, y) = (-6, 15) and (2, -1)
Step-by-step explanation:
You can start by subtracting the second equation from the first.
(y) -(y) = (x^2 +2x -9) -(-2x +3)
0 = x^2 +4x -12 . . . . . . collect terms
0 = (x +6)(x -2) . . . . . . . factor
Solutions for x are -6 and +2. These values make the factors zero.
The corresponding solutions for y are ...
y = -2(-6) +3 = 15
y = -2(2) +3 = -1
Solutions to the system of equations are ...
(x, y) = (-6, 15) and (2, -1)
how many times can 2 go into 67
fourth grade help
Answer:
Step-by-step explanation:
To answer this, divide 67 by 2, writing the answer as a mixed number:
67
---- = 33 1/2
2
thus, 2 can go into 67 33 times, keeping in mind that there's a remainder (1/2).
Magnesium has a charge of +2, and chlorine has a charge of –1. To form a chemical bond, how many magnesium ion(s) would the compound have?
A) 0
B) 1
C) 2
D) 3
Find the value of x and y
Select the answer that describes the properties of a parallelogram.
Answer:
A is the correct answer because all sides are congurent
A parallelogram has two pairs of parallel sides.
opposite sides and opposite angles are congruent.
Option D is the correct answer.
We have,
Parallelograms have several notable properties:
Opposite sides are parallel:
In a parallelogram, opposite sides are parallel, meaning they never intersect and have the same slope.
Opposite sides are congruent:
The opposite sides of a parallelogram have equal lengths. This property applies to both pairs of opposite sides.
Opposite angles are congruent:
The opposite angles of a parallelogram have equal measures. This property applies to both pairs of opposite angles.
- Consecutive angles are supplementary.
- Diagonals bisect each other.
- Diagonals create congruent opposite triangles.
- Diagonals create equal opposite angles.
Thus,
A parallelogram has two pairs of parallel sides.
opposite sides and opposite angles are congruent.
Learn more about parallelograms here:
https://brainly.com/question/1563728
#SPJ2
Carla and Diane Bought identical suit cases at a different stores. Carla’s suitcase originally cost $85 and was on sale for 20% off the original price which suitcase was a the better deal? What do we know ? List important facts ? What do we want to find out ?? Solve ??? Show ur work? Explain starts ur Asnwer and give details ? And justify your steps ?
Answer:
Carla's was the better deal with $68.00
Diane's: $85.00
Step-by-step explanation:
0.2 x 85 = 17
85 - 17 = 68$
logx=(logx)^2
find the value of x without using calculator
Answer:
x = 1
Step-by-step explanation:
log(1) = 0
log(1) = [tex]log(1)^{2}[/tex]
0 = [tex]0^{2}[/tex]
0 = 0
What is the answer for the following equation?
53 x 65 + 36 ÷ 5 = ?
Answer:
3452.2
Step-by-step explanation:
3452.2
Answer:
3452.2
Step-by-step explanation:
we have to use bodamas rule..
evans uncle bought 2 1/4 pounds of hamburger meat and used 1/3 of it to make lunch. How much hamburger meat did evans uncle use to make lunch?
Answer/Step-by-step explanation:
To find the answer subtract 2 1/4 by 1/3
Integer in algebra
Need help 9th grade
Answer:
4x + 10 >1
-10. -10
4x < -9
Step-by-step explanation:
make sure to make it less than or equal to
Expand 5(2x-4) please please
Answer:
10x - 20
Step-by-step explanation:
Distribute 5 to each of the terms within the parentheses to get 5(2x) - 5(4) = 10x - 20.
Find all the square roots of 36
Hey there!
√36
= √6^2
= 6
Therefore, your answer should be: 6
Good luck on your assignment and enjoy your day!
~Amphitrite1040:)
Step-by-step explanation:
[tex] \sqrt{36} = ...[/tex]
[tex] = {36}^{ \frac{1}{2} } = (6 {}^{2} ) {}^{ \frac{1}{2} } [/tex]
= 6
Sally Jones had a policy with a $250 deductible which paid 80% of her covered charges less deductible. She had medical expenses of $18,240.00. What is S
Answer
Find out the insurance company's payment .
To proof
Deductible
The deductible is the amount of money you will pay in an insurance claim before the company starts paying you insurance coverage .
As given
Sally Jones had a policy with a $250 deductible which paid 80% of her .covered charges less deductible
She had medical expenses of $18,240.00.
Amount becomes after deducting deductible = $18,240 - $250
= $17990
80 % is written in the decimal form
now 80% of the Amount after deducting deductible
= $ 14392
Therefore $ 14392 is the insurance company's payment .
Remember To Stay In School
Wink Wink
Answer:3,848
Step-by-step explanation:I took the test.
The graph below shows a distance versus time graph. What is the average speed
between 2 p.m. and 4 p.m.?
Answer Choices and Graph in the picture.
Answer:
option B is correct answer.
Step-by-step explanation:
(200-75)/2 = 62.5 miles per hour.
On a map 1 inch equas 27 miles. How much is 3 inches
Answer:
3 × 27
=81
mark BRAINLIEST pls
9. Machine Trades Find the width X of the V-thread shown. (Round to the
nearest thousandth.)
Answer:
X would be 1,000
Step-by-step explanation:
17. Which of the following numbers is the largest. Explain why you made the choice you did.
-3/4, -3/2,-1, -2/3
Answer:
3/1
Step-by-step explanation:
because why not
to pass this school year i need more time on my computer, more time on edmentum, the thing is im all caught up with my work and all i need is to find a way to get more time, if someone could find out how long it takes before im "off task" so i can just touch my computer to start the time again, or if theres a different way plz plz lmk
Answer:
you could start by making a definite timetable for yourself and try to get away so as to differentiate the time between your work your Edmonton and a time is spending a computer don't try to spend much more time when your computer because it's mainly due to procrastinating in during other work
helpppp please!!!!!!!
Answer:
a
Step-by-step explanation:
a
4. Find a value of x that is a solution to 5(x - 3) = x + 13. Describe how you found the solution
Answer:
x=7
Step-by-step explanation:
5(x - 3) = x + 13
Distribute the 5
5x-15 = x+13
Subtract x from each side
5x-15-x = x+13-x
4x-15 =13
Add 15 to each side
4x-15+15 = 13+15
4x= 28
Divide each side by 4
4x/4 = 28/4
x = 7
Answer:
x = 7
Step-by-step explanation:
First
5(x - 3) = 5x - 15 by distributing the 5 on each variable and number in the parenthesis.
Then
5x - 15 = x + 13 which you add 15 (or 5x - 15 + 15 = x + 13 +15) on both sides to have the numbers on one side because it must be the opposite to cancel out the 15 on the original/previous side.
Afterwards
5x = x + 28 now we must get the x to the other side and using the same logic as before you move the x to the other side by subtracting it (or 5x - x = x + 28 - x) to the other side equaling 4x = 28.
Finally
4x = 28 you need to divide each side by 4 to cancel out the 4 on the x since we must find out what x is (or 4x/4 = 28/4), and you should get x = 7.
QUICKLY!!!! A paper airplane was thrown from the top of a tall building.The height of the paper airplane above the ground can be found using the function `y=-1.5x+60` , where `x` is the time in seconds the airplane has been in the air.
Jayden made this table to figure out how high the plane was at different times.
0 | 60
10 | 45
20 | 30
30 | 15
40 | 0
How would the equation `y=-1.5x+60` change if the height at 0 seconds was 75?
Answer:
y = -1.5x + 75
Step-by-step explanation:
Well, the rate at which the plane falls doesn't change, so anything attached to the time variable remains constant.
In this case, the first part of the function (-1.5x) remains the same.
Since the height of the tall building was 60 and the value in the equation, we can see that the last value corresponds to the number of meters above ground.
Since the height has changed to 75, the last part of the equation (60) changes to 75, and the rest remains constant.
That gives us the following equation: y = -1.5x + 75
87 is 12.5% of what number?
Answer:
10.88
Step-by-step explanation:
If f(x)=8-5x, what is f(4p+3)
Answer:
-20p - 7
Step-by-step explanation:
f(x)=8-5x
f(4p+3) = 8 - 5(4p + 3)
= 8 - 20p - 15
= -20p -7