Answer:
11/3y-3/8
Step-by-step explanation:
Distribute -1/2 through the parentheses
4y-3/8-1/3
calculate the difference
Answer- 11/3y-3/8
If y varies directly as x, and y =-4 when x=8, find y when x=3
Answer: Another way of looking at it!
y
=
10
Explanation:
This is a ratio question in disguise.
By parts of the question:
"When y varies directly with x"
→
y
x
"
"if y=8 when x=4"
→
.
.
y
x
=
8
4
"how do you find y when x=5"
→
y
x
=
8
4
=
y
5
so
y
=
8
×
5
4
=
10
This is the same thing as using 'k' in the other solution
Step-by-step explanation:
y = 5x − 7 −3x − 2y = −12 solved by substitution please show the work too so i can understand
Answer:
y=3, x=2
Step-by-step explanation:
-3x-2(5x-7)=-12 (substitute y=5x-7)
simplify
{-13x+14=-12\}
isolate x for -13x +14=-12: x=2
for y=5x-7 substitute x=2
simplify y=3
sorry i know this is quite lenghty but i hope this helps :) have a nice day !!
A cube has a surface area of 150
cm squared. Find the side length of the cube in cm.
Answer:
Step-by-step explanation:
6 faces have an area of 150 cm^2
1 face has an area of 150/6 = 25 cm^2
The formula for the area of one face of a cube = s^2 which is the length of a side squared.
s^2 = 25
sqrt(s^2) = sqrt(25)
s = 5
2/3 - 1/3 what the difference
Answer:
2/3 begins w a 2 and 1/3 begins w a 1. thats the difference.. hope this helped :)
Step-by-step explanation:
Answer:
.3333333
Step-by-step explanation:
because u have to math ight
Plz help
I only need B
A natural history museum surveyed the people visiting the museum for one month and
created a circle graph to show the age of the visitors for that month.
a. Find the number of degrees for each part of the museum visitors graph. (8 points)
Age 18 and under:
Age 19 – 44:
Age 45 – 64:
Age 65 and over:
b. If 5000 people visited the museum during the month the survey was taken, how
many visitors were there for each age group? (8 points)
Age 18 and under:
Age 19 – 44:
Age 45 – 64:
Age 65 and over:
Answer:
19-44.
Step-by-step explanation:
I simply looked up the answer with a calculator.
Answer:
Age 18 and under: 175
Age 19 - 44: 1,750
Age 45 - 64: 1,500
Age 65 and over: 1,000
Step-by-step explanation:
I asked my mom and she kept roasting me :( So I kinda figured it out
What is two thing you like about math
Answer:
1. Math encourages curiosity and questions.
2. Math can save you money. ...
3. In a survey on juice preference, 68 students prefer orange
juice and 32 prefer apple juice.
Jui
Use difference to compare.
Answer:
36
Step-by-step explanation:
68-32= 36
Answer:
i have 36
Step-by-step explanation:
all i did was subtract 32 from 68
1. The temperature in Hawaii on Thursday was 85°F. The temperature in Colorado on Thursday was
5°F. Which expression(s) represent this situation using the absolute value of the difference
Answer: See explanation
Step-by-step explanation:
From the question, we are informed that the temperature in Hawaii on Thursday was 85°F while thee temperature in Colorado on Thursday was 5°F.
The expression(s) that represent this situation using the absolute value of the difference will be:
= 85°F - 5°F
= 80°F
100 POINTS!!! can someone help me please?? will give brainliest if correct!!
Answer:
k= 15
Step-by-step explanation:
Answer:
k =15 and please give brainliest
Step-by-step explanation:
How much sand is needed to fill a pit that
is 10m deep and 8m wide and 12m long?
Answer:
The answer is 960cm3
Step-by-step explanation:
you multiply all the numbers
Select the procedure that can be used to show the converse of the Pythagorean theorem using side lengths chosen from 6 cm, 8 cm, 9 cm, and 13 cm.
A. Knowing that 6^2 + 8^2 = 10^2, draw the 6 cm side and then the 8 cm side with a right angle between them. The 10 cm side will fit to form a right triangle.
B. Knowing that 6^2 + 8^2 > 9^2, draw the 6 cm side and then the 8 cm side with a right angle between them. The 10 cm side will fit to form a right triangle.
C. Knowing that 8^2 + 9^2 does not equal 10^2, draw the 8 cm side, then the 9 cm side with a right angle between them. The 10 cm side will fit to form a right triangle.
D. Knowing that 6^2 + 8^2 = 10^2, draw any two of the side with a right angle between them. The third side will fit to form a right triangle.
Answer:
A. Knowing that 6^2 + 8^2 = 10^2, draw the 6 cm side and then the 8 cm side with a right angle between them. The 10 cm side will fit to form a right triangle.
Step-by-step explanation:
Answer:
A
Step-by-step explanation:
credit goes to guy up top
A shop sells packs of black pens, packs of red pens and packs of green pens.
There are
2 pens in each pack of black pens
5 pens in each pack of red pens
6 pens in each pack of green pens
On Monday, the ratio of number of packs of pens sold was Black : Red : Green = 7 : 3 : 4
A total of 212 pens were sold.
Work out the number of green pens sold.
Answer:
The number of green pens sold are 96 green pens
Step-by-step explanation:
The given parameters for the packs of pens sold by the shop are;
The number of pens in each pack of black pens = 2 pens
The number of pens in each pack of red pens = 5 pens
The number of pens in each pack of green pens = 6 pens
The ratio of number of packs of pens sold Black : Red : Green = 7 : 3 : 4
The total number of pens sold = 212
Let 'x' represent the number of packs of pens sold
Therefore, the fraction of the packs the pens sold that are black pens = 7/(7 + 3 + 4) = 7/14 = 1/2
∴ 1/2 of the number of packs of pen sold = packs black pens = x/2
The fraction of the packs the pens sold that are red pens = 3/14
∴ 3/14 of the number of packs of pen sold = packs of red pens = 3·x/14
Similarly, we have;
The fraction of the packs the pens sold that are green pens = 4/14 = 2/7
∴ 2/7 of the number of packs of pen sold = packs of green pens = 2·x/7
Therefore, we have;
x/2 × 2 + 3·x/14 × 5 + 2·x/7 × 6 = 212
Where;
x/2 × 2 = The number of black pens sold
3·x/14 × 5 = The number of red pens sold
2·x/7 × 6 = The number of green pens sold
∴ 53·x/14 = 212
x = 212 × 14/53 = 56
∴ The number of packs of pens sold = x = 56 packs
The number of green pens sold = 2·x/7 × 6 = 2 × 56/7 × 6 = 96
The number of green pens sold = 96 pens.
What type of triangle (right, obtuse, acute) do the angles 5,5,5 form?
Answer:
acute
Step-by-step explanation:
5 is lower than a 90* angle
if this is wrong I'm very sorry.
A hibernating animal lost 5 pounds.
Write a signed number to represent this weight change.
Answer:
-2
Step-by-step explanation:
The sign would be negative because the pounds were lost not gained
The number of years it will take for $510 to grow to $1,010.18 at 5 percent compounded annually is ____
Answer:
13.66 years
Step-by-step explanation:
Given data
P=$510
A=$1,010.18
R=5%
t= ln(A/P)/r
susbstitute
t= ln(1,010.18/510)/0.05
t=ln1.980/0.05
t= 0.683/0.05
t= 13.66
Hence the time is 13.66 years
PLEASE HELP!!!!!!!!!!!!!!!!!!!!!!!!!
Which of the following is a solution to the equation x3=149 ?
A
x=723
B
x=732
C
x=7−23
23
D
x=7−32
E
This equation has no solution
Answer:
x=5.301459
You have to find the cube root of 149 to isolate the variable.
Answer:
E
Step-by-step explanation:
The school that Rob goes to is selling tickets to a spring musical. On the first day of ticket sales the school sold 7 adult tickets and 4 child tickets for a total of $89. The school took in $119 on the second day by selling 7 adult tickets and 14 child tickets. Find the price of an adult ticket and the price of a child ticket.
What is the measure of angle X?_
Answer:
Hey this isn’t the answer, sorry
Step-by-step explanation:
I just need this answer to so let me know if you get the answer Thank you
can some help me wit dis
The answer is 6
•Triangles always equal 180 degrees
•The top angle is 90 meaning the others are 45
45+3=48
48/8=6
The third term in an arithmetic sequence is 9 and the fifth term is 21 . If the first term if a1, which is an equation for the nth term of this sequence?
A:an=6n-9
B:an=14n+6
C:an=6n+14
D:an=9n-6
Answer:
A: an = 6n - 9
Step-by-step explanation:
third term in an arithmetic sequence is 9
a3 = a + 2d
a + 2d = 9
the fifth term is 21
a5 = a + 4d
a + 4d = 21
a + 2d = 9 (1)
a + 4d = 21 (2)
Subtract (1) from (2) to eliminate a
4d - 2d = 21 - 9
2d = 12
d = 12/2
d = 6
Substitute d = 6 into (1)
a + 2d = 9 (1)
a + 2(6) = 9
a + 12 = 9
a = 9 - 12
a = -3
nth term of this sequence = a + (n - 1)d
= -3 + (n - 1)6
= -3 + 6n - 6
= 6n - 9
an = 6n - 9
Twenty divided by the difference of seven and three. Numerical expression
Answer:4
Step-by-step explanation:20 divided by(7-3)
You can buy 5 cans of beans at the Village Market for $3.20. You can buy 10 of the same cans of beans at Sam’s Club for $7.30. Which place is the better buy?
Answer:
Village Market
Step-by-step explanation:
3.20÷5=.64
7.30÷10=.73
help please, the image is attached.
Answer:
A
Step-by-step explanation:
A
Which equation describes the line that passes through the points (-4, 19) and (2, -1)
Answer:
y=-5/2x+4
Step-by-step explanation:
find the slope by using y2-y1/x2-x1
-1-19/2-(-4)
simplify
-20/8
simplify
-5/2
use slope-intercept form, y=mx+b
since we know the slope, find b
plug in one of the ordered pairs into the equation
-1=(-5/2)(2)+b
simplify
-1= -10/2+b
simplify
-1=-5+b
add 5 to both sides
b=4
plug b into y=-5/2x+b
y=-5/2x+4
What is the simplest form of of this expression?
Answer:
B
Step-by-step explanation:
Lin runs 12 laps around a track in 15 minutes.
A. How many minutes per lap is that?
B. How many laps per minute is that?
C. If Lin runs 20 laps at the same rate, how long does it take her
Answer:
it will take 25.2 minutes for Lin to run 21 laps
Step-by-step explanation: give crown plsplsplsplsplsplsplsplsplspls, also have a good day!
in the diagram below, BD is parallel to XY. What is the value of x?
Answer:
A. 55
Step-by-step explanation:
Answer: A. 55
Step-by-step explanation:
What is the slope of the line passing through the points (3,5) and (-1,7)?
-1/2
To find the slope of the line between two points, we use the equation (y2-y1)/(x2-x1)
Substitute the values given for the xs and ys:
(7-5)/(-1-3)
2/(-4)
simplify: -1/2
A store pays $557.55 for a gaming system, and marks the price up 40%. What is the retail price?
Answer:
$780.57
Step-by-step explanation:
557.55*1.4 = 780.57
Find Sin D and sin E! Write the answer as a fraction and as a decimal. Round to four decimal places, if necessary! Please help me!