Step-by-step explanation:
3(6+b)-(2b+1)
=18+3b-2b+1
=18+1+3b-2b
=19+b
1. Which expression is equivalent to the given expression? * -0.25 (84 – 32n) - n
a. 21 – 9n
b. -21 – 9n
c. - 21 + 8.25n
d. -21 + 7n
PLS HURRY
help me pls i need help
Answer:
answer is D
Step-by-step explanation:
hope this helps :-D
Whats the equation in slope-intercept form -y - 3x = 4
Answer:
y = -3x - 4
Step-by-step explanation:
Using algebra we solve for solely y
-y = 3x + 4
y = -3x - 4
Ana's manager is trying to figure out how much to charge for a chair that just arrived. If the wholesale price of the chair is $135 and Ana's store marks up all the furniture by 85%, at what price should the manager sell the chair? Round your answer to the nearest cent.
Answer:
$249.75
Step-by-step explanation:
135 x 0.85
114.75 + 135
Chau bought 28 pounds of flour for $12.
How many dollars did he pay per pound of flour?
Answer:
Step-by-step explanation: 28 divided by 12 = $2.33 per pound of flour.
Are these two claims equivalent, in conflict, or not comparable because they’re talking about different things?
a. “Every year since 1950, the number of American children gunned down has doubled.”
b. “The number of child gunshot deaths has doubled from 1950 to 1994.”
Answer:
They are in conflict.
Step-by-step explanation:
for statement (a) we have child gunshot deaths doubling every year. So if it was 1 death in 1950, it is 2 in 1951, 4 in 1952, 8 in 1953, 16 in 1954. That would make the deaths in 1994 = (deaths in 1950) x 2 x 2 x 2 x 2 ... with 44 factors of 2. That number is over a trillion.
for statement (b) we have child gunshot deaths doubling over a period of 44 years, which might even be true
11. Let f(x) = 2x² + 7x + 5
Answer:
(x+1)(2x+5)
Step-by-step explanation:
f(x) = 2x² + 7x + 5
Factor the expression by grouping. First, the expression needs to be rewritten as 2x²+ax+bx+5. To find a and b, set up a system to be solved.
a+b=7
ab=2×5=10
Since ab is positive, a and b have the same sign. Since a+b is positive, a and b are both positive. List all such integer pairs that give product 10.
1,10
2,5
Calculate the sum for each pair.
1+10=11
2+5=7
The solution is the pair that gives sum 7.
a=2
b=5
2x²+7x+5 as (2x²+2x)+(5x+5).
(2x²+2x)+(5x+5)
Factor out 2x in the first and 5 in the second group.
2x(x+1)+5(x+1)
Factor out common term x+1 by using distributive property.
(x+1)(2x+5)
2 1/4 + 3/4 =
276x40
PLEASE HELP !! ILL GIVE BRAINLIEST *EXTRA POINTS*..
IM GIVING 40 POINTS !! DONT SKIP :((.
Answer:
y = x + 11
Step-by-step explanation:
The table is showing 4 x and y values. With the question of which equation gives the rule of the table.
To solve, all we have to do is plug in x with the correspondant equation, same goes with y.
y = x + 11 will be the only one that fits mainly because all the other ones gives a higher result.
Answer:
y = x + 11
Step-by-step explanation:
y + 11 = 11
1 + 11 = 12
2 + 11 = 13
3+ 11 = 14
4+ 11 = 15
y is the first row, 1,2,3,and 4
11 is 11 (lol)
x is the answer
your answer is y=x+11
A produce manager inspects large truckloads of potatoes to determine the proportion with major defects (p). She intends to compute a 95% confidence interval for p. To do so, she selects an SRS of 50 potatoes from the more than 2,000 potatoes in the truck. Suppose that only 2 potatoes sampled are found to have major defects.
1. The P-value of her test is:_____.
a. 0.4082.
b. 0.0918.
c. 0.0400.
d. less than 0.0002.
2. Which of the assumptions for inference about a proportion are violated?
a. the data are an SRS from the population of interest.
b. the population is at least 10 times as large as the sample.
c. n is so large that both np0 and n(1-p0) are 10 or more, where p0 is the proportion with major defects if the null hypothesis is true.
d. there appear to be no violations.
3. A 95% plus four confidence interval for the true proportion of potatoes in the truck that have major defects is:____.
a. 0.06±0.026.
b. 0.06±0.051.
c. 0.077±0.026.
d. 0.077±0.051.
Answer:
1. 0.4082
2. The data are an SRS from the population of interest
3. 0.06 +- 0.051
Step-by-step explanation:
Hypothesis testing is carried out to give conclusion about data set. The p value determines whether to accept or reject the null hypothesis. Alternative hypothesis is created against the null hypothesis to test the observation of data.
5 2/4- 3 3/4?
Plz help me with this question
Answer: The answer you're looking for is 1.75.
Hope this helps
Answer: =1 3/4
Step-by-step explanation: hope this help
y=-4x +9 Identify the rate of change
Answer:
the rate of change is -4
Step-by-step explanation:
it's set up as y=mx+b
m is the rate of change
b is the y-intercept
m= -4
b=9
Answer:
f ( x ) = [tex]x^{2}[/tex] , [ 2 , 3 ]
− 4
Step-by-step explanation:
Micki runs 3 miles during each track practice. The
graph below represents the total number of miles
she has run, d, in terms of the number of track
practices she has attended, t.
HELP ME PLS ASAP PLS PLZ I NEED FOR TODAY AS IN 2/18/21! PLZZZZ
Answer:
A d= 3t
Step-by-step explanation:
(6)= 3(2)
(9)= 3(3)
(12)= 3(4)
(15)= 3(5)
(18)= 3(6)
PLEASE HELP! WILL MARK BRAINLIEST
Answer:
I don't know Im sorry
Step-by-step explanation:
Brian ran 5/6 mile in the morning and 2/3 mile in the afternoon. Did Brian run farther in the morning or in the afternoon?
Answer:
In the morning
Step-by-step explanation:
Because in the afternoon, he ran 2/3 mile and that is equal to 4/6 which is less than 5/6.
Evalua la siguiente
expresión algebraica si
X=3 Y=2
3x + 4y =
Answer:
3x + 4y = 17
Step-by-step explanation:
Espero y te haiga ayudado :)
There are 18 suites altogether in the hotel, how many suites are there on each floor if each floor has the same floorplan?
From the original question there were 6 floors with rooms.
Divide the number of suites by number of floors:
18 / 6 = 3
There are 3 suites per floor.
what is a collection of numbers and mathematical operations
Answer:
Algebraic (or numeric) expression (also referred to as phrase) A mathematical expression (numeric/algebraic) is one or a group of mathematical symbols representing a number or quantity. It may include numbers, variables, constants, operators, and grouping symbols. One side of an equation is also an expression.
Step-by-step explanation:
dekh mujhe brainliest mark karde agar nahi kiya toh tujhe report kardunga
Answer:
An algebraic expression is a collection of numbers, variables, operations, and grouping symbols. You will translate an unknown number as the variable x or n. The grouping symbols are usually a set of parentheses, but they can also be sets of brackets or braces.
Which equation has no solution?
3k - 20 = 12
8+15g=15+8g
12x+6=3(4x+2)
9р +7 =6р- 2+ Зр
Answer:
9р +7 =6р- 2+ Зр
Step-by-step explanation:
Answer:
9p+7=6p-2+3p your answer is
Help plz:)))I’ll mark u Brainliest
Answer:
28ft
Step-by-step explanation:
Kirsten has to walk 2 3/4km to school. How far has she walked when she halfway? Give your answer in metres.
Answer:
375 m
Step-by-step explanation:
[tex] \frac{3}{4} \times 1000 = 750[/tex]
From halfway
[tex] \frac{750}{2} = 375[/tex]
Follow me and text me if you need anything in math.
Help????????????????
Answer:
After looking at your pfp and then the question I have came to a conclusion
y= 1x + 2
Im not sure if the 1 is right but the second is 2 for sure
Answer:
hey
Step-by-step explanation:
The length is 8 1/3 yd the width is 6 3/4 yd what is the area
Answer:
56 and 1/4 square yds
Step-by-step explanation:
HELP ME I NEED SOMEONE TO SHOW WORK AND AWNSER QUESTION ITS TIMED PLEASE HURRY 60 POINTS FOR IT!
Answer:
Hope this helps, thank you !!
What is the length of side c?
13cm
5cm
с
C=
cm
The answer should be 18 centimeters
If i am wrong I am sorry
The third leg of the right-angle triangle will be 12 cm.
What is a right-angle triangle?It's a form of a triangle with one 90-degree angle that follows Pythagoras' theorem and can be solved using the trigonometry function.
The Pythagoras theorem states that the sum of two squares equals the squared of the longest side.
The Pythagoras theorem formula is given as
H² = P² + B²
The hypotenuse of the right-angle triangle is 13 cm and the perpendicular of the right-angle triangle is 5 cm.
Then the measure of the third side (B) of the right-angle triangle will be
13² = 5² + B²
169 = 25 + B²
B² = 169 - 25
B² = 144
B = 12
Thus, the third leg of the right-angle triangle will be 12 cm.
More about the right-angle triangle link is given below.
https://brainly.com/question/3770177
#SPJ2
Using the scientific calculator or graphing calculator find the inverse tangent of the ratio. Round to the nearest degree. 3/1
Given:
The ratio is [tex]\dfrac{3}{1}[/tex].
To find:
Inverse tangent of the given ratio.
Solution:
We know that,
Inverse tangent of the ratio [tex]\dfrac{3}{1}[/tex] = [tex]\tan^{-1}\dfrac{3}{1}[/tex]
= [tex]\tan^{-1}3[/tex]
Using scientific or graphing calculator, we get
Inverse tangent of the ratio [tex]\dfrac{3}{1}[/tex] = [tex]71.565^\circ[/tex]
Round to the nearest degree
Inverse tangent of the ratio [tex]\dfrac{3}{1}\approx 72^\circ[/tex]
Therefore, the correct option is C.
For the function y = -x2 – 2, how can you find the value of y when x = 3?
Answer:
y=-3x2-2
y=-8
I think it.
Answer: D- Square 3, multiply the result by -1, and then subtract 2. b r a I n l I e s t plzz
Help me answer question 1
Answer:
The answer is option
3 and 4
On average, a person spends $240 every 3 months on their cellphone bill . What would the price for 1 month. How much would this person pay over the course of 1 year?
Answer:
$960
Step-by-step explanation:
price of one month = total expense/ number of month
= 240/3= $80
therefore persons annual expenses = 80*12= $960
A four member work crew needed new equipment. Boots cost 75 each, safety vest cost 15 each and hard hats cost 30 each. What is the total cost of the new equipment for all of the members?