Which expression is equivalent to `7+10x+x-3?`
There are 90 students in the school band. 40% of them are sixth graders. How many band members are sixth graders?
Answer:
36
Step-by-step explanation:
.4 x 90
Answer:
36
Step-by-step explanation:
40/100 = x/90
100x div 100 3600div 100
x = 36
Clara has 9 pounds of apples. She needs 1 1/4 pounds to make one apple pie. If she saves 2 pounds for applesauce, how many pies, p, can she make? Write an algebraic equation to represent this situation.
Answer:
She can make :
5 3/5 pies
Algebraic equation =
1 1/4 p = (9 - 2)
Step-by-step explanation:
Clara has 9 pounds of apples. If she saves 2 pounds for applesauce, how many pies, p, can she make?
Total number of pounds of apples = 9 pounds
She saves 2 pounds for apple sauce
The number of pounds of apples left =
9 pounds - 2 pounds
= 7 pounds
She needs 1 1/4 pounds to make one apple pie.
Therefore
1 1/4 pounds = 1 apple pie
7 pounds = p
Cross Multiply
1 1/4 × p = 7 × 1
p = 7 ÷ 1 1/4
p = 7 ÷ 5/4
p = 7 × 4/5
p = 28/5
p = 5 3/5 pies
An Algebraic equation for this situation is:
1 1/4 p = (9 - 2)
Where p = Number of pies
Julius is at point A He moves 3 units to the left and 2 units down from his
location and picks up a baill What are the coordinates of the points from where
he picked up the ball?
Answer:
(8, 10)
Step-by-step explanation:
He is at (11, 12). He moves three to the left, so 11 - 3 = 8. He then moves two down. 12 - 2 = 10. Therefore, he is at point (8, 10).
ADVANCED MATHEMATICIANS ONLY
Brianiest for first answer
Like for first answer
5 star for first answer
Answer: it is a
Step-by-step explanation:
54x x 654v = 43695v solve for v
30 points!!!!!
The area of the figure below is__ ft2. Round to the nearest whole
number.
Answer:
A=522
Explanation:
Ellane plan to interview some applications for positions in her office she scheduled a 1/4 of an hour to meet each of them how much time did she schedule for all six appliances
Answer:
1 1/2 hours
Step-by-step explanation:
To determine the time she would spend on 6 applicants, multiply the time she spends on each applicant by the total number of applicants
1/4 x 6 = 6/4 = 1 2/4 hours
to convert to its simplest form, divide both numerator and denominator by 2. this gives 1 1/2 hours
Another method
Add 1/4 six times
1/4 + 1/4 + 1/4 + 1/4 + 1/4 + 1/4 = 6/4 = 1 2/4 = 1 1/2 hours
Can someone help me plzzz and thank you
Answer:
Yes SAS
Step-by-step explanation:
2 sides are the same
1 90 degree angle for each triangle
Hence the Answer Side-Angle-Side
AYO HELP ME OUT! PLEASE ONLY FULL ANSWERS <3
Answer:
x=32°
Step-by-step explanation:
ABC+BCA+CDE=180
Substitute
61+57+2x=180
118+2x=180
2x=62
x=32
Determine the equation of the line. (slope intercept form)
Answer:
y=x-4
Step-by-step explanation:
y=mx+b
m : slope : 1
b : y-int : -4
Work out the area of a rectangle with base,
b
= 26mm and perimeter,
P
= 70mm
You Try: Solve for x and y by using elimination. 4x + y = 7 4x - 2y = -2
Answer:
[tex]\boxed {\boxed {\sf (1, 3) \ or \ x=1 \ and \ y=3}}}[/tex]
Step-by-step explanation:
We are given this system of equations:
[tex]4x+y=7\\4x-2y=-2[/tex]
We use elimination to solve to eliminate one of the variables, so we only have to work with one at a time. We do this by adding and subtracting the equations, and sometimes multiplying the entire equation by a number.
Notice how both equations have a 4x. This means they can easily be eliminated, without multiplying the equations by another number first. Let's subtract the 2 equations.
[tex]\ \ \ 4x+y=7\\ -(4x-2y)=-2[/tex]
The 4x will cancel because 4x-4x=0.
[tex]\ \ \ \ y=7 \\ - (-2y) = -2[/tex]
Since there are back to back negative signs, they become addition signs.
[tex]\ \ \ \ y=7 \\+2y=2[/tex]
[tex]3y=9[/tex]
We are solving for y , so we must isolate the variable. It is being multiplied by 3 and the inverse of multiplication is division. Divide both sides by 3.
[tex]3y/3=9/3\\y=3[/tex]
Now we can substitute 3 in for y in the original equations. Let's use the first one.
[tex]4x+y=7\\4x+3=7[/tex]
3 is being added to 4x. The inverse of addition is subtraction. Subtract 3 from both sides.
[tex]4x+3-3=7-3\\4x=4\\[/tex]
x is being multiplied by 4. The inverse of multiplication is division. Divide both sides by 4.
[tex]4x/4=4/4\\x=1[/tex]
x is equal to 1 and y is equal to 3. Coordinate points are written as (x, y). The solution to this system of equations is (1, 3).
What is the volume of a sphere with a diameter of 4.9 cm, rounded to the nearest
tenth of a cubic centimeter?
Answer:
492.87cm^3
Step-by-step explanation:
Given data
Diameter= 4.9cm
The expression for the volume is
V= 4/3 πr^3
Substitute
V= 4/3*3.142*4.9^3
V= 4/3*3.142*117.649
V=1478.612632 /3
V=492.87 cm^3
Hence the volume is 492.87cm^3
Help and Plz make sure it’s right
Answer:
8.6
Step-by-step explanation:
Use the pythagorean therom for this
(5.9)^2 + (6.3)^2 = c
c= 74.5
square root of 74.5 is 8.631 or 8.6
hope this helps
Manuel incorrectly claimed that the surface area of the cylinder
shown is about 621.7 in.. Use a formula to find the surface area of the cylinder.
Use 3.14 for it. What was his likely error?
11 in
The surface area of the cylinder is about
(Round to the nearest tenth as needed.)
Answer:
25.9%
Step-by-step explanation:
Since, the actual dimensions of the cylinder is not given we can assume the some dimension to explain the problem
Let us assume the dimension of the cylinder be
radius= 3in
height= 5 in
The expression for the total surface area of a cylinder is
T. S. A. =2πrh+2πr^2
Let us plug in the values to to find TSA
T. S. A. =2×3.14×3×5+2×3.14×3^2
Solving we get
T. S. A. =94.26+56.556
T. S. A. =150.816 in^2
Now let us find the error
we know that error % is calculated as
%error= [actual value-expected value/expected value]×100
%error= [190 -150.816/150.816]×100
%error= [39.184/150.816]×100
%error= 0.259×100
%error= 25.9%
name a chord shown in this diagram.
Answer:
R to S
Step-by-step explanation:
The line passing through (-3 , -6) and (d, -5d) has a gradient of -3.
Find the value of d.
Answer:
d = 7.5
Step-by-step explanation:
Calculate the slope m using the slope formula and equate to - 3
m = [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]
with (x₁, y₁ ) = (- 3, - 6) and (x₂, y₂ ) = (d, - 5d)
m = [tex]\frac{-5d+6}{d+3}[/tex] = - 3 ( multiply both sides by (d + 3) )
- 5d + 6 = - 3(d + 3)
- 5d + 6 = - 3d - 9 ( add 3d to both sides )
- 2d + 6 = - 9 ( subtract 6 from both sides )
- 2d = - 15 ( divide both sides by - 2 )
d = 7.5
What is the measure of angle C
Answer:
41
Step-by-step explanation:
In order to find the measure of angle C we must find the value of x
Remember the measures of the angles in a triangle add up to equal 180
that being said we use this equation to solve for x
180 = (sum of angles) 63 + 2x + 8 + x + 7
now we solve
step 1 combine like terms
63 + 7 + 8 = 78
2x + x = 3x
now we have 180 = 78 + 3x
step 2 subtract 78 from each side
180 - 78 = 102
78 - 78 cancels out
now we have 102 = 3x
step 3 divide each side by 3x
102/3=34
3x/3=x
we're left with x = 34
Now to find the measure of angle C
We plug in the value of x in the expression (x + 7)
so c = 34 + 7
34 + 7 = 41
therefore your answer is 41
In ΔDEF, the measure of ∠F=90°, FD = 3.3 feet, and DE = 3.9 feet. Find the measure of ∠D to the nearest degree
Answer:
the awnser is 30 degrees
Step-by-step explanation:
You have to look at your d ruler between different angles
Tell whether x and y show direct variation, inverse variation, or neither.
y-3 = 22
the variables show: (inverse variation, direct variation, or neither)
Answer:
thWhat is c hw wrin hd dont know if I know what x is to find the answer
Find the midpoint of the line on the coordinate plane with the given endpoints below.
(-1, 1), (5, -5)
Answer:
Then the midpoint is (2, -2)
Step-by-step explanation:
We treat the x- and y-coordinates separately, first finding the average (mean) of the x-coordinates and then the average of the y-coordinates:
xm = (-1 + 5)/2 = 2
ym = (1 - 5)/2 = -2
Then the midpoint is (2, -2)
Answer:
(2,-2)
Step-by-step explanation:
Two points are given to us and we need to find the midpoint of those two points. The points are
(-1,1) and (5,-5) . Let us say we have two points ( x1,y1) and ( x2 , y2) . The midpoint will be ,
[tex]\implies Midpoint =\bigg( \dfrac{x_1+x_2}{2},\dfrac{y_1+y_2}{2} \bigg) \\\\\implies Midpoint = \bigg( \dfrac{-1+5}{2},\dfrac{1-5}{2}\bigg)\\\\\implies Midpoint = \bigg( \dfrac{4}{2},\dfrac{-4}{2}\bigg)\\\\\implies \red{Midpoint = ( 2 , -2) }[/tex]
Please help! Describe how the variables in the given equation are related.[tex]p=\frac{kqrt}{s}[/tex]
9514 1404 393
Answer:
p is proportional to q, r, t, and inversely proportional to s
Step-by-step explanation:
Assuming k is a "constant of proportionality," the value of p is directly proportional to each of the numerator variables: q, r, t. P is inversely proportional to the denominator variable, s.
Solve the question in the picture below. Thank you.
Answer:
8 units
Step-by-step explanation:
Find the distance along the y-axis. For the example points (3,2) and (7,8), in which (3,2) is Point 1 and (7,8) is Point 2: (y2 - y1) = 8 - 2 = 6. This means that there are six units of distance on the y-axis between these two points. Find the distance along the x-axis. Learn how to find the distance between two points by using the distance formula, which is an application of the Pythagorean theorem. We can rewrite the Pythagorean theorem as d=√((x_2-x_1)²+(y_2-y_1)²) to find the distance between any two points.
Which expressions are equivalent to the one below? Check all that apply.
16^x/4^x
Answer:
C D anf F
Step-by-step explanation:
c : by expanding and canceling 4^x .
d : its the expanded form.
f : its just another way of expressing the expression
which expressions are equivalent to the one below? Check all that apply.
[tex]8^x[/tex]
A. x^4
B. 8 * 8^x+1
C. (32/4)^x
D. 8 * 8^x-1
E. 32^x/4^x
F. 32^x/4
AP_EX - Algebra II
Answer:
The right answers are C, D and E
BRAINLIEST!!!! PLZZZZ SEE BELOW!!!
Answer:
b. 0.25
Step-by-step explanation:
40 + 120 = 160
40 / 160
For brainiest :):):):):):)):):):)
Answer:
9) 0.46
10) 0.666
11) 18%
12) 2.3%
13) 0.7/ 70%
14) 0.56/ 56%
15) 0.0035/ 0.35%
16) 1.13/113%
Step-by-step explanation:
PLEASE helppppp me
I’ll give brainlest or whatever it’s called btw
Answer:
30.5 i think
Step-by-step explanation:
plz let me know if wrong!
Answer:
Step-by-step explanation:
the angles are equivalent, so set them equal to each other
4x + 2 = 124
- 2 - 2
4x = 122
/ 4 / 4
x = 30.5
9 less than 4 times a number equals 15
Answer:
if you wanted it in equation form the it'll be : 9 < 4 x n = 15
~ i hope this has helped you out, have a gr8 day/night my friend!~
Step-by-step explanation:
Answer:
Six / 6
Step-by-step explanation:
Fifteen less than 4 times a number is 9, meaning we have to find the number.
Let the required number be x
4 times the number = 4x
15 less than 4 times the number = 4x-15
⇒ 4x – 15 = 9
⇒ 4x = 9 + 15
⇒ 4x = 24
⇒ x = 6
meaning the number is 6.
Hope this helps!
