Substitution method of simultaneous equations
3x-4y=7
2x+y=12
Answer: x=5, y = 2
Step-by-step explanation: screenshots
Multiplication or division?
Wayne has a hot dog stand open all summer. On Wednesday, he
used 2/3 a bag of hot dog buns. On Thursday, he used 4/5 as many
hot dog buns. How many bags of hot dog buns did Wayne use on
Thursday?
Answer:
you multiply
Step-by-step explanation:
How much did rosemary pay per pound?
Answer:
0.89
Step-by-step explanation:
2.24/3 = 0.89
She paid 89 cents per pound of tomatoes.
Have a great day!
Please rate and mark brainliest!
After 2 years, $90,000 deposited in savings account with simple interest had earned
$3,600 in interest. What was the interest rate?
HURYYY
Answer:
2% I think, I don't know, 4%‽
You want to estimate the number of students in your school who prefer to bring a lunch from home rather than buy one at school. You survey five students who are standing in the lunch line. Determine whether the sample is biased or unbiased.
Explain.
Answer:
It's biased because they're only asking people standing in the lunch line, instead, they should be asking numerous of students randomly to eliminate biased.
What is the equation for the graph shown?
Answer:
y = 2x/3 + 4
Step-by-step explanation:
The line passes through (-6, 0) and (0, 4)
slope = (4 - 0)/(0 - (-6)) = 4/6 = 2/3
y = (2/3)x + b
when x = 0, y = 4, so
4 = (2/3)*0 + b
b = 4
so
y = 2x/3 + 4
3x^2 + 6x + 4 axis of symmetry
A police radar gun is used to measure the speeds of cars on a highway. The speeds of cars are normally distributed with a mean of 55 mi/he and a standard deviation of 5 mi/hr. Roughly what percentage of cars are driving less than 45 mi/hr ? Round to the nearest tenth of percent .
A. 95.0%
B. 2.5%
C. 5.0%
D. 18.0%
Answer
b: 2.5
Step-by-step explanation:
because my dad said so
Can someone explain the three solutions in math: one solution, no solution, and all real numbers please. What does it mean when then the statement is false how do I know when it’s false?I’m confused I don’t know how to identify the solutions please help me thank you so much!!!
Step-by-step explanation:
Note that when lines intersect, that when they show a solution.
All Solutions:
When we graph two equations, and they line on the same curve thus all points will be a point of intersection..
Let say we have two linear equations.
[tex]4x + 4y = 16[/tex]
[tex]x + y = 4[/tex]
This are all solutions, because
if we do the graphical way, when we graph this on a calculator or desmos, they will lie on the same curve so it has infinite points of intersections.
If we do algebraic way,
Notice that the top equation is the same as The bottom equation but just multiplied by 4. So the top and bottom equations are the same.
So whenever the two or more equations have same slope and same y intercept, the solutions will be all real solutions or infinite solutions.
One Solution:
In plane geometry, note that a line that isn't parallel to another one, will intersect eventually once.
This means that for example
[tex]4x + 4y = 16[/tex]
[tex]x + 2y = 32[/tex]
These equations have different slope so they will intersect once. Which means it'll have one solution.
NO Solutions:
Parallel Lines never intersect which means they have no solutions.
Consider this
[tex]4x + 4y = 16[/tex]
[tex]x + y = 1[/tex]
We know the slopes are the same but y intercept is different they will never intersect.
Find the value of m/5 + 9, when m=50.
Answer:
19
Step-by-step explanation:
If m=50, then m/5 = 50/5. That is 10. Then you add 9, equaling 19.
Hope this helps!
e) Calculate the residuals for your scatterplot in step 2d.
Answer:
I think it's five and ten.
replace the values of m and n to show solutions of this equation: x^2+6x-5=0
what is the value of X
What’s the answer?
-6/7 x (-5/4) = ___
Answer:
The answer is 15/14 or 1 1/14
If a salesman averages a new order every other week, he will break the office record for the year. However, after 32 weeks he is four orders behind schedule. In what proportion of the remaining weeks does he have to obtain a new order to break the record?
The proportion of remaining weeks that he has to obtain a new order to break the record is: 0.7 = 70%.
What is a proportion?A proportion is a fraction of a total amount, and the measures are related using a rule of three. Due to this, relations between variables, either direct or inverse proportional, can be built to find the desired measures in the problem.
He needs a new order every other week, that is, 0.5 orders per week, hence over one year = 52 weeks, the number of orders is:
O = 0.5 x 52 = 26 orders.
Over the first 32 weeks, the expected number was:
E = 0.5 x 32 = 16.
He was four orders behind schedule, that is, he had 12 orders, hence he needed 26 - 12 = 14 orders in the remaining 52 - 32 = 20 weeks, hence the proportion is:
p = 14/20 = 0.7.
More can be learned about proportions at https://brainly.com/question/24372153
#SPJ1
How are you supposed to do this
Answer:
4x < -8
you will need to isolate the variable to be by itself by performing the inverse property of multiplication which is division;
/4 /4(divide by 4 from both sides)
x < -2
CAN SOMEONE PLEQSE HELP ME? WORTH 50 POINTS !! SCREENSHOT TO SEE BETTER
Answer:
1. 157 in³
2. 12 in
3. volume of the rice container is 1.5 times the volume of the sugar container
4. 50.24 in³
5. Rice container has the greatest volume
Flour container has the smallest volume
Step-by-step explanation:
By inspection of the diagram, the three containers are all cylinders.
Volume of a cylinder = [tex]\pi r^2h[/tex]
(where r is the radius and h is the height)
Given [tex]\pi[/tex] = 3.14
1. volume of sugar container = 3.14 x 2.5² x 8 = 157 in³
2. 235.5 = 3.14 x 2.5² x h
⇒ 235.5 = 19.625h
⇒ h = 235.5 ÷ 19.625 = 12 in
3. height of sugar container = 8 in
height of rice container = 12 in
12 ÷ 8 = 1.5
⇒ height of rice container is 1.5 times the height of the sugar container
volume of sugar container = 157 in³
volume of rice container = 235.5 in³
235.5 ÷ 157 = 1.5
⇒ volume of the rice container is 1.5 times the volume of the sugar container
4. volume of flour container = 12.56 x 4 = 50.24 in³
5. volume of sugar container = 157 in³
volume of rice container = 235.5 in³
volume of flour container = 50.24 in³
Rice container has the greatest volume
Flour container has the smallest volume
-5a + 3 > 1
Find the value of A
Thanks!
Answer:
a<5/2
Step-by-step explanation:
you first subtract 3 to both sides. then you divide both sides by -5 and get a>5/2. then you flip the sign because you divided by a negative.
there was a blizzard. Snow was falling at a rate of 4 1/2 inches per hour. If the snow kept accumulating at the same rate, how long would it take for 5 feet of snow to accumulate?
Answer:
13 1/3 Hours
Step-by-step explanation:
5 feet = 60 inches
4 1/2 inches = 1 hour
60 inches = 1 ÷ 4 1/2 x 60
= 13 1/3 hours
If the snow keeps accumulating, it would take 13 1/3 hours for 5 feet of snow to accumulate.
Given a function described as the equation y = 4x - 4, what is y when x is 1, 2, and 3?
Which choices are equivalent to the expression below
Answer:
b and c for future help look up and equivalent calculator
27 is 30% of what number?
Answer:
im pretty sure that the answer your looking for is 90
Step-by-step explanation:
Answer:
90
Step-by-step explanation:
STEP 1 27 = 30% × Y
STEP 2 27 = 30/100 × Y
Multiplying both sides by 100 and dividing both sides of the equation by 30 we will arrive at:
STEP 3 Y = 27 × 100/30
STEP 4 Y = 27 × 100 ÷ 30
STEP 5 Y = 90
Finally, we have found the value of Y which is 90 and that is our answer.
Consider the series.
∞∑n=1 (3^n+1 / 3n+1)
Does the series converge or diverge?
Select answers from the drop-down menus to correctly complete the statements.
Put 1
[tex]\\ \rm\Rrightarrow \left(\dfrac{3^{1+1}}{3(1)+1}\right)[/tex]
[tex]\\ \rm\Rrightarrow 3^2/4=9/4=2.2[/tex]
Put 2
[tex]\\ \rm\Rrightarrow \left(\dfrac{3^{2+1}}{3(2)+1}\right)=3^3/7=27/7=3.8[/tex]
R is
3.8/2.2=19/11Its greater than 1 .
So diverge series.Answer:
[tex]r=\dfrac{12}{7}[/tex]
series diverges
Step-by-step explanation:
To find the common ratio (r) of a geometric series, divide the (n+1)th term by the nth term.
When n = 1:
[tex]a_1=\dfrac{3^{1+1}}{3(1)+1}=\dfrac{3^2}{4}=\dfrac94[/tex]
When n =2:
[tex]a_2=\dfrac{3^{2+1}}{3(2)+1}=\dfrac{3^3}{7}=\dfrac{27}{7}[/tex]
Therefore,
[tex]r=\dfrac{a_2}{a_1}=\dfrac{\frac{27}{7}}{\frac{9}{4}}=\dfrac{12}{7}[/tex]
A series that converges has a finite limit. If |r| < 1, then the series will converge.
A series that diverges means either the partial sums have no limit or approach infinity. If |r| > 1 then the series diverges.
Therefore, as the limit of the series approaches infinity and it's r value is greater than 1, the series diverges.
Use a net to find the surface area of the right triangular prism shown:
Answer:
256 ft²
Step-by-step explanation:
Net comprises: 2 equal triangles, 2 equal rectangles and 1 smaller rectangle
Area of a triangle = 1/2 x base x height
⇒ area of one triangle = 1/2 x 10 x 7 = 35 ft²
Area of a rectangle = width x length
⇒ area of larger rectangle = 6 x 12 = 72 ft²
⇒ area of smaller rectangle area = 6 x 7 = 42 ft²
⇒ Total area = (2 x 35) + (2 x 72) + 42 = 256 ft²
solve 6 divided by 3 x 2 to the second power
Answer:
It's 4
I hope it's help
Step-by-step explanation:
6 ÷ 3×2 = 4
A section of a deck is shaped like a trapezoid. For this section, the length of one base is 59 feet, and the length of the other base is 42 feet. The height is 26 feet. What is the area of this section of the deck?
Answer:
i think it 32214
Step-by-step explanation:
59 x 42 = 2478 x 26 = 66428. And divided by 1/2 (I'm sorry if im wrong)
What is m
A.)120°
B.)75°
C.)80°
D.)85°
Answer:
120
Step-by-step explanation:
linear angle (straight line) = 180
180-60 = 120
There are 200 different pieces of fruit in a barrel. There are 42 apples, 82 oranges, and 76 pears. Which of the following events have a probability that is less than 0.4? Select all that apply. A. Randomly selecting an apple B. Randomly selecting an orange C. Randomly selecting a pear D. Randomly selecting an apple or an orange E. Randomly selecting an apple or a pear F. Randomly selecting an orange or a pear
:
apples
Step-by-step explanation:
there are 42 apples so thats the least so more probability that it is 0.4 it also rounds up to it sorry if im wrong
Please help?
Sw/ati is substituting t = 5 and t = 9 to determine if the two expressions are equivalent.
8 (4t - 3) 32t - 24
Which statement is true?
Both expressions are equivalent to 264 when t = 9.
Both expressions are equivalent to 157 when t = 5.
Both expressions are equivalent to 46 when t = 5.
The expressions are not equivalent.
Answer:
Both expressions are equivalent to 264 when [tex]\displaystyle t = 9.[/tex]
Step-by-step explanation:
All you are doing is substituting 9 for t:
[tex]\displaystyle 8[4(9) - 3]\:32[9] - 24 \\ \\ 264 = 264[/tex]
I am joyous to assist you at any time.
You are getting your carpet cleaned. You have three bedrooms (9x10’); 10x12 and 11x16), a living room (14’x16’) and dining room (14x14’ ) . Perfco Carpet Cleaning Co. charges $0.50/sq for carpet cleaning. What is your charge?
Answer:
Under 800 square feet of carpet to be cleaned: $0.53 per square foot
800 - 1,500 square feet: $0.49 per square foot
Over 1,500 square feet: $0.42 per square foot
Stairs (standard size): $4.16 each stair
