Answer:
Step-by-step explanation:
4 minuses give a plus
8/945
Solve the equation for the given variable. Justify each step.
9x + 2y = 5; y
Answer:
{x,y}={ 5/9,0}
Step-by-step explanation:
9x - 2y = 5
y = 0
9x - 2•() = 5
9x = 5
x = 5/9
By now we know this much :
x = 5/9
y = 0
⇒{x,y} = {5/9,0}
Answer:
Please check the explanation.
Step-by-step explanation:
Given the equation
[tex]9x + 2y = 5[/tex]
solving the equation for y
[tex]9x + 2y = 5[/tex]
Step 1: Add -9x to both sides
[tex]9x+2y+-9x=5+-9x[/tex]
[tex]2y=-9x+5[/tex]
Step 2: Divide both sides by 2
[tex]\frac{2y}{2}=\:\frac{-9x+5}{2}[/tex]
[tex]y=\frac{-9}{2}x+\frac{5}{2}[/tex]
Thus, the value of y is:
[tex]y=\frac{-9}{2}x+\frac{5}{2}[/tex]
If we put y = 0 in the [tex]9x + 2y = 5[/tex]
[tex]9x+\left(0\right)=5[/tex]
[tex]9x=5[/tex]
[tex]\mathrm{Divide\:both\:sides\:by\:}9[/tex]
[tex]\frac{9x}{9}=\frac{5}{9}[/tex]
[tex]x=\frac{5}{9}[/tex]
Thus, the value of x=5/9 at y=0
8. Evauate the following expression when w=3.27
6.2w - 4.97 *
Enter your answer
Answer:
Your answer is 15.304
Step-by-step explanation:
PLEASE HELP ME ASAP!!!
A
B
D
C
Answer:
c
Step-by-step explanation:
bc its c and yea its c ok u get it.
Answer:
I feel like its A because the line deflects at (4,0) I could be wrong
Step-by-step explanation:
Find the following area of this trapezoid.
Answer:
its c 98
Step-by-step explanation:
multiply hight by width so 14x7 and thats 98 but idrk
Determine the x-intercept of the line whose equation is given:
y = 4 x + 2
a.
(0, 2)
b.
(negative 2, 0)
c.
(0, negative one-half)
d.
(Negative one-half, 0)
Tysm !
Answer:
its d
Step-by-step explanation:
i just did it
22200 devided by 864
Answer:
25.694
Step-by-step explanation:
From 12:00 midnight to 6:00 a.m., the temperature decreased by 12°C. If the original temperature was 12°C, which expression can be used to represent this situation?
Answer:
12-12
Step-by-step explanation:
hope this helps tell me if it's right
Answer:
12 - 12
Step-by-step explanation:
If the temperature was originally 12°C it decreases by 12° then 12 - 12.
From 12:00 midnight to 6:00 am, the temperature decreased by 12°C. If the original temperature was 12°C.
Question: Which expression can be used to represent this situation?
12:00 midnight temperature = 12 °C.
6:00 am temperature decreased by 12 °C.
So 12 - 12.
Hope this helps (sorry if I'm wrong)
A salesman at J&R Computer World sold a laptop for $1500. His commission was $75. What was his commission rate?
Answer:
5%
Step-by-step explanation:
1500 * X = 75
X = 75/1500
X = .05 or 5%
Sophia spent $27.16 on four sandwiches. If each sandwich cost the same amount, how much does one sandwich cost?
Answer:
6.79
Step-by-step explanation:
you just divide 27.16 (the cost) by 4 (how many sandwiches were purchased)
(8x4+2x2−1)+(3x3−5x2+7x+1)=
Answer: 41 (i'm not really sure. but i was trying to help so please don't be mad
Step-by-step explanation:
8 * 4 = 32 3 * 3 = 9 and 5 * 2 = 10
2 * 2 = 4 9 - 10 = -1
32 + 4 = 36 -1 + 7 = 6 + 1 = 7
36 - 2 = 34
34 + 7 = 41
For the right triangle shown, use the trig functions to find the value of c. Round your answer to the nearest tenth.
1. 21
2. 14
3. 7
4. 28
Answer:
14
Step-by-step explanation:
This is a special right triangle with angle measures of 30° 60° 90° and in this special triangle the side lengths are labelled as x, x√3 and 2x
The side length that sees angle measure 30° is x
the side length that sees angle measure 60° is x√3
and the side length that sees angle measure 90° is 2x
The side length that sees angle measure 30° is given as 7 so x = 7 and since the side length that sees 90° (hypotenuse) is 2x we can say that c = 14
Which of the following is the correct factorization of the polynomial below?
p²-125
OA (- 5q)(p + 5pq+ 25)
O B. (-259)(p? + 25pq + 25¢)
O C. (p+ 10g)(p² + 25pq + 5
D. The polynomial is irreducible.
Answer:
D but see below.
Step-by-step explanation:
It can be factored if you are allowed to use square roots.
(p + 5√5)(p - 5√5)
Usually, you are not allowed to do that. Usually you must be working with whole numbers or rational well behaved fractions.
I think, given the above comment, the answer is D
What is the value of this expression?
Answer:
1/4
Step-by-step explanation:
1)2²= 4
2)4²= 16
3)3x2/3=2
4)6+2-4/8=1/4
If k=-2, what is the value of 5 - (2k-1)?
half of the substance to remain is called the half-life of the substance.
The half-life of a pesticide is 10 years. A farmer initially applies 200 grams of the
pesticide to a fence post.
Complete the following statements.
After 20 years, there are
grams of pesticide left. Round your answer
to the nearest whole gram.
After 60 years, there are
grams of pesticide left. Round your answer
to the nearest hundredth of a gram.
After
years, there are approximately 1.03 grams of pesticide
left. Round your answer to the nearest whole year.
Answer:
Instructions are below.
Step-by-step explanation:
To calculate the final amount if a given substance, we need to use the following formula:
final amount= initial amount / (2^n)
n= elapsed time / half-life
For 20 years:
n= 20/10= 2
Final amount= 200/(2^2)
Final amount= 50 grams
For 60 years:
n= 60/10= 6
Final amount= 200/ (2^6)
Final amount= 3.125 grams
To calculate the elapsed time it is more complicated:
elapsed time= ln(ending amount/beginning amount) / (-decay constant)
ln= natural logarithm
decay constant= ln(2) / half-life
decay constant= 0.0693
elapsed time= ln(1.03/200) / (-0.0693)
elapsed time= 76.028
Prove:
n= 76.02/10= 7.602
Final amount= 200/(2^7.602)= 1.03 grams
The police department uses a formula to determine the
speed at which a car was going when the driver applied the
brakes, by measuring the distance of the skid marks. The
equation d = 0.0015r^2 + r models the distance, d, in feet
traveled after applying the brakes in a car moving
r miles per hour (r is the speed of the car).
If the distance the car traveled after applying the brakes
equals 88 feet, what, what was the speed of the car? *
*Round your answer to the nearest hundredth miles per hour.
Answer:
mph
9514 1404 393
Answer:
78.71 mph
Step-by-step explanation:
You're looking for the solution to ...
d = 88
0.0015r^2 +r = 88
0.0015r^2 +r -88 = 0
Using the quadratic formula*, we find ...
r = (-1 +√(1² -4(0.0015)(-88)))/(2×0.0015)
r = (-1 +√1.528)/0.003 = 0.236123/0.003 = 78.7077
The speed of the car was about 78.71 mph.
_____
* The quadratic formula will also give a negative answer of about -745 mph, which is not relevant to the situation.
Type the correct answer in the box. Round your answer to the nearest integer.
B
D
30
35
A
С
In the figure, if m_ABD = 120°, then m_ADC =
-4345
Answer:
[tex]m\angle ADC=132^\circ[/tex]
Step-by-step explanation:
The Law of Sines
It is an equation relating the lengths of the sides of a triangle to the sines of its opposite angles. If A, B, and C are the lengths of the sides and a,b,c are their respective opposite angles, then:
[tex]\displaystyle \frac{A}{\sin a}=\frac{B}{\sin b}=\frac{C}{\sin c}[/tex]
We have completed the figure with the variable x for angle BDA. Thus
[tex]\displaystyle \frac{35}{\sin 120^\circ}=\frac{30}{\sin x}[/tex]
Solving for x:
[tex]\displaystyle \sin x=\frac{30\sin 120^\circ}{35}[/tex]
Calculating:
[tex]\sin x=0.742[/tex]
[tex]x=\arcsin 0.742[/tex]
[tex]x\approx 48^\circ[/tex]
Since angles ADC and x are linear, their sum is 180° and:
[tex]m\angle ADC=180^\circ-48^\circ[/tex]
[tex]\mathbf{m\angle ADC=132^\circ}[/tex]
Two 6-sided dice are rolled. What is the probability that the sum of the two numbers on the dice will be greater than 9?
Answer:
The probability that the sum of the two numbers on the dice will be greater than 9 is 16.7%.
Step-by-step explanation:
To find the probability of the two fair six-sided dice getting a sum of 9 when thrown, we have to first find all the possibilities and those that are greater than 9.
The total number of possibilities for the outcome of the two dice would be (1, 1), (1, 2), (1, 3), (1, 4), (1, 5), (1, 6), (2, 1) and so on. Due to every possibility from the first dice branching out into six possibilities for the second dice, we can find the total number of possibilities to be 6 * 6 = 36 possibilities.
Now to find the total number of possibilities with a sum greater than 9. Due to the question asking for a sum of over 9, the possibilities will not include those with a sum of 9 itself. Hence, the only possibilities are when the first dice rolls 4 or more, since 3 + 6 (the maximum that the second dice can roll) is exactly 9.
Listing out all the possibilities, there are: (4, 6), (5, 5), (5, 6), (6, 4), (6, 5) and (6, 6). A total of 6 possibilities will get you a sum of 9 or above.
Finally, to find the percentage, we divide the number of possibilities with their sum over 9 by the total number of possibilities:
[tex]\frac{6}{36} \cdot 100\%[/tex]
[tex]= \frac{1}{6} \cdot 100\%[/tex]
[tex]= 16.7\%[/tex]
Hence, the probability that the sum of the two numbers on the dice will be greater than 9 is 16.7%.
Hope this helped!
The probability that the sum of the two numbers on the dice will be greater than is 1/6
What is probability?Probability is a measure of the likelihood of an event to occur. Many events cannot be predicted with total certainty. We can predict only the chance of an event to occur i.e., how likely they are going to happen, using it.
Given that, two dies are rolled we need to find the probability that the sum of the two numbers on the dice will be greater than 9,
The total outcomes = 36
{[1][1], [1][2], [1][3], [1][4], [1][5], [1][6],
[2][1], [2][2], [2][3], [2][4],[2][5], [2][6],
[3][1], [3][2], [3][3], [3][4], [3][5], [3][6],
[4][1], [4][2], [4][3], [4][4], [4][5], [4][6],
[5][1], [5][2], [5][3], [5][4], [5][5], [5][6],
[6][1], [6][2], [6][3], [6][4], [6][5], [6][6].}
Listing out all the possibilities, there are: {(4, 6), (5, 5), (5, 6), (6, 4), (6, 5) and (6, 6)} = 6
Therefore, the probability that the sum of the two numbers on the dice will be greater than 9 = 6/36 = 1/6
Hence, the probability that the sum of the two numbers on the dice will be greater than is 1/6
Learn more about probability, click;
https://brainly.com/question/30034780
#SPJ2
11. Mike has a 792-page book. If he reads 36 pages each day,
how many days will it take him to finish reading the book?
Answer:
22 days
Step-by-step explanation:
Number of pages divided by number of pages he reads per day
792 ÷ 36 = 22
Hope this helped :)
Answer:
22
Step-by-step explanation:
792÷36=22
ok??:)) isksjsix
PLZ HELP FAST (will mark brainliest) (alot of points I think)
Use the information given to enter an equation in standard form.
(2,-4) and (-1,2) are on the line.
Answer:
y=-2x
i think this is what your asking for if im wrong im sorry
Step-by-step explanation:
Answer:
y=-2x
the answer is y=-2x
Maria is draining her swimming pool. The depth of the water in the pool changes by −3/4 foot every hour.The depth of the water was 5 feet when she started draining. What is the depth of the water after 5 hours?
Answer: 1 1/4feet
Step-by-step explanation:
From the question, we are informed that the depth of the water in the pool changes by −3/4 foot every hour and that the depth of the water was 5 feet when she started draining.
The depth of the water after 5 hours will be:
= 5 - 3/4(5)
= 5 - 15/4
= 5 - 3 3/4
= 1 1/4 feet
Move each shape to the best catergory of the diagram.
Answer:
from left to right, including the triangle placed in the rectangle section already; quadrilateral, polygon, quadrilateral, polygon, quadrilateral, rectangle
roger sells 23 necklaces at a fair a total of $ 201.25. Each necklaces is sold for the same price. what is the price of one necklaces ?
Answer:
$8.75
Step-by-step explanation:
It is given that,
Roger sells 23 necklaces at a fair a total of $ 201.25.
We need to find the price of 1 necklace. We can use unitary method to find it.
23 necklaces = $201.25.
For cost of 1 necklace, divide $201.25 by 23 as follows :
[tex]x=\dfrac{201.25}{23}\\\\=\$ 8.75[/tex]
So, the cost of 1 necklace is $8.75.
PLZ HURRY IT'S URGENT!!!
Which combinations satisfy the situation in the graph?
(It's multiple choice you can select more than one answer)
options:
4 pounds of apples and 4 pounds of oranges
7 pounds of apples and 8 pounds of oranges
3 pounds of apples and 2 pounds of oranges
6 pounds of apples and 5 pounds of oranges
Answer:
Option 1 and 3
Step-by-step explanation:
jdnfkfnkdksnd
If X =4 in., find the area of the trapezoid in problem 22
Answer:
Need a picture of the problem.
Step-by-step explanation:
Prescription for Marilyn Jones
Piroxicam 20 milligrams (mg) capsules: take 1 capsule 2 times a day
Glucotrol 2.5 milligrams (mg) tablets: take 1 tablet every morning
Isoniazid 100 milligrams (mg) tablets: take 1 tablet 3 times a day
The pharmacy only has 5 milligrams (mg) Glucotrol tablets. How many tablets will Marilyn take in 8 days? (show your work)
Answer this equation 3(2-4d)-9dx43((2+4-34.2
please answer incorrectly
Answer:
12+ 23734.9d That's the incorrect answer.
true or false HELP me
Answer:
True
Step-by-step explanation:
you move left 1 unit and up 1 units, you end at (4,-2) where did u start?
Answer:
can you show the like board thing
Step-by-step explanation:
Answer:
(3,-1)
Step-by-step explanation:
If you look at a graph and plot the point (4,-2) and move left 1 unit, you end up at 3. Then you move up 1 unit. Now you are at -1. Therefore, your point is (3,-1).
Can someone please help me with this question I dont get it
