Answer:
0.85*40=34
Step-by-step explanation:
the student answered 34 questions correctly out of 40. hope that helped
Which is a solution to the linear inequality 2x-y>6 select all that apply
A(-1,2)
B (3,7)
C (4,0)
D (1,-5)
Answer:
c. and D.
Step-by-step explanation:
What is the slope of line that passes through the points (-3,8) and (1,32)?
Answer:
6
Step-by-step explanation:
use the formula of slopes
[tex] = \frac{y2 - y1}{x2 - x1} \\ = \frac{32 - 8}{1 - ( - 3)} \\ = \frac{24}{4} \\ = 6[/tex]
Answer:
[tex]\frac{31 }{11 }[/tex]
Step-by-step explanation:
The formula to solve this is: [tex]\frac{y_{2} -y_{1} }{x_{2} -x_{1} }[/tex]. In this case, the expression would be: [tex]\frac{32 -1 }{8 -(-3) }[/tex] or [tex]\frac{32 -1 }{8 +3 }[/tex]. This is also [tex]\frac{31 }{11 }[/tex].
Hope it helps and is correct!
what is the area of 3.14 x 20
Answer:
62.8
Step-by-step explanation:
If 3^2x+1 - 3^x+5, what is the value of x?
Answer:
3^(2x+1)
Step-by-step explanation: srry if am wrong and am probally wrong.
Mail order a mail order company has a 10% success rate. If it mails advertisements to 602 people, find the probability of getting less than 57 sales. Round z value calculations to 2 decimal places and final answer to at least 4 decimal points
Answer:
0.30854
Step-by-step explanation:
Given :
Sample size, n = 602
p = 10% = 0.1
q = 1 - p = 1 - 0.1 = 0.9
Using binomial approximation :
Mean, m = n * p = 602 * 0.1 = 60.2
Standard deviation, s = sqrt(npq) = sqrt(602*0.1*0.9) = 7.36
P(x < x - 0.5) = (x - m) / s
x = 57
P(x < 56.5) = (56.5 - 60.2) / 7.36
Z = - 3.7 / 7.36
Z = - 0.5027 = - 0.50
P(Z < - 0.50) = 0.30854 (Z probability calculator)
. A clothing store offers a 30% discount on all items at the store. If the original price of a sweater is $40, how much will you pay for the sweater at the discounted price?
Answer:
I don't know i just want some points but to be honest i think you have to divide 40 by 30 then multiply by 100.
Step-by-step explanation:
hope this helps but try and work it out.
what is the area of the figure below
Answer:49.5
Step-by-step explanation:
Since all sides of a square are equal, multiply 6 x 6. Then multiply 6 times 4 1/2 then divided by 2. Now add everything together. Hopefully this helps :)
a real number between √13 and √14
Answer:
3.7
Step-by-step explanation:
Luis saved 5/8 of his pay. What percent of his pay did he save?
Please help me find the cube root of 1-i and the square root of i. Leave your answers in Trig form
Answer:
Step-by-step explanation:
Need help with this trigonometry word problem
From the top of the tower 30 m height a man is observing the base of a tree at an angle of depression measuring 30 degree. Find the distance between the tree and the tower.
Please show your work
Answer:
30√3 m ≈ 52 m
Step-by-step explanation:
The side ratios in a 30°-60°-90° triangle are 1 : √3 : 2. The long leg of the triangle is √3 times 30 m, or about 51.96 m.
The distance between the tree and the tower is about 30√3 m ≈ 52 m.
__
If you haven't memorized the ratios of this special triangle, you can use the relation ...
Tan = Opposite/Adjacent
tan(30°) = 30/d
d = 30/tan(30°) = 30√3 = 51.96 . . . . same as above
A city receives 2 inches of snowfall every 3 hours. Write and graph a function that describes the relationship. How long does it take to receive 1 foot of snow? Use x for the independent variable and y for the dependent variable.
Answer:
To receive 1 foot of snow it will take about 18 hours.
Step-by-step explanation:
Given that a city receives 2 inches of snowfall every 3 hours, to write and graph a function that describes the relationship and determine how long does it take to receive 1 foot of snow, the following calculation must be performed:
1 foot = 12 inches
(12/2) x 3 = X
6 x 3 = X
18 = X
Thus, to receive 1 foot of snow it will take about 18 hours.
4
Which ratio is proportional to 5:8 or 5/8
5
40/20
10/24
15/24
100/140
Step-by-step explanation:
Cancel 15/24 by 3 you'll get your solution.
hope it helps
Simplify by combining like terms.
-3r - 2r - 6 - 1 - 7r+ 9r
Answer:−3r−7
Step-by-step explanation:
I got it of the web.
What is the midpoint between the points (-2,-1) and (10,7)
A city receives 4 inches of snowfall every 6 hours. Write and graph a function that describes the relationship. How long does it take to receive 1 foot of snow? Use x for the independent variable and y for the dependent variable. i need a function for this
Answer:
graph ????
Step-by-step explanation:
Susie has a bag with 10 hair pins, 7 pencils , 2 snacks and 4 books. What is the ratio of books to pencils?
Answer:
4:7 i think, bc its books to pencils so books go first, which is 4, put the ratio sign, then 7
A box contains 45 cubes numbered 1-45. What is the probability of pulling out 2 primes in a row if the first one is. It replaced?
Answer:
1/9
Step-by-step explanation:
prime #'s between 1 and 45:
2,3,5,7,11,13,17,19,23,27,29,31,37,41,43
P(prime,prime) = 15/45 × 15/45 or 1/3 × 1/3
Draw a conclusion is the statment below always, sometimes, or never true ? Bive at least two examples to support your reasoning. The lcm of two numbers is the product of the two number discuss your conclusion with a partner
Answer:
Sometimes
Step-by-step explanation:
Example 1:
Take two numbers as [tex]7,8[/tex]
LCM of [tex]7,8=7(8)=56[/tex]
In this case, the lcm of two numbers is equal to the product of the two numbers.
Example 2:
Take two numbers as [tex]6,3[/tex]
[tex]6=3(2)[/tex]
So,
LCM of [tex]6,3=3(2)=6[/tex]
In this case, the lcm of two numbers is not equal to the product of the two numbers.
Therefore,
Sometimes, the lcm of two numbers is equal to the product of the two numbers.
hey if ur good at algebra... plz help meh
ty
Im not for sure.. but I think it would be something like 3,9
Answer:
We rearrange the first equation into y = 8x - 42 and we substitute it in to get
-4x - 6 = 8x - 42 so 12x = 36 so
x = 3 and y = -18
hope this helps and brainliest please
Larry's math teacher did not want to announce her age. She told her students if
they could solve the riddle, it would reveal how old she was. Her riddle stated: "The
product of my age and five, then decreased by twenty and finally increased by my
age times negative three is fifty." How old was Larry's math teacher? Hint: Write the
equation first, then solve to find the missing part.
Answer:
age is 35
Step-by-step explanation:
5a - 20 + (-3a) = 50
2a - 20 = 50
2a = 70
a = 35
answer correctly for brainliest
Answer:
x=3
Step-by-step explanation:
When you substitute x = 3 to both equations, you get y = -4 for both so that is a solution
Please someone help me with this number line
The cross country team practice by jogging on town steerts the average jogging rate is 6 mile per hour one member jogged for 3.5 hours one weekend how many miles did the team member jogged
Answer:
6mile + hour + 3.5 hours + miles
Step-by-step explanation:
add the expressions
Which function is equivalent to
f(x) = x2 + 3x – 18?
F f(x) = (x - 6)(x – 3)
G f(x) = (x - 6)(x + 3)
H f(x) = (x + 6)(x + 3)
J f(x) = (x + 6)(x - 3)
What is the geometric mean of 6 and 16?
I think its 9.7980........
WILL MARK BRAINLIEST PLS HELP
The circumference of a circle is 18.41 feet. What is the approximate length of the radius?
2.8 feet
2.9 feet
3.0 feet
Answer:
2.9 feet
Step-by-step explanation:
One ticket costs $15.45. Three tickets would cost?
Suppose we know that the width of a rectangle is 3 3/4 cm and the area is 15 square cm. Write and solve a division equation to help you find the length of the triangle.
Answer:
Step-by-step explanation:
A=LW
L=A/W, given A=15 and W=3.75
L=15/3.75
L=4cm
I need help with geometry
Answer:
Step-by-step explanation: