Answer:
x = 8
Step-by-step explanation:
25x - 80 = 120
+ 80 + 80
25x = 200
/25 /25
x = 8
Check your answer:
25x - 80 = 120
25(8) - 80 = 120
200 - 80 = 120
120 = 120
This statement is correct
Hope this helps!
Answer:
8
Step-by-step explanation
simplify the polynomial then finds its value for the given value of the variable 3x^3-x^3+5x^3-9x^3 if x=-1
Answer: 2
Step-by-step explanation:
3•(-1)^3 - (-1)^3 + 5•(-1)^3 - 9•(-1)^3
3•(-1) - (-1) + 5•(-1) - 9•(-1)
-3 +1 -5 +9= 2
A cell phone company charges $50 plus $40 per line each month. Luke must spend under $170 on his family's cell phone bill each month. How many cell phones can his family have?
The equation that's been computed shows that the number of cell phones that his family can have will be 2.
How to solve the equationFrom the question, it was stated that the cell phone company charges $50 plus $40 per line each month and that Luke must spend under $170 on his family's cell phone bill each month.
Let the number of cell phones that can be bought be represented by x.
The equation to solve the question will be:
50 + 40(x) < 170
50 + 40x < 170
Collect like terms
40x < 170 - 50
40x < 120
x < 120/40
x < 3
Therefore, the number of cell phones has to be less than 3. Hence, this will be 2.
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a taxi charges $2 per mile. there is also a $3 callout charge. how is distance related to cost. can you write an equation?
Answer:
y= 3$ + x km * 2$
Step-by-step explanation:
since the callout price is 3$ you are gonna pay at least this much.. and then for every km/mile you will pay 2$.
A cylinder has a cross-section circumference of 56cm. The height of the cylinder is 3.2cm. Calculate the volume and surface area of the cylinder.
Answer:
volume = 798.58 cm³ (nearest hundredth)
surface area = 678.31 cm³ (nearest hundredth)
Step-by-step explanation:
Volume of a cylinder: [tex]V=\pi r^2h[/tex]
Surface area of a cylinder: [tex]SA=2\pi r^2+2\pi rh[/tex]
Circumference: [tex]C=2\pi r[/tex]
(where r is the radius and h is the height)
Given circumference = 56
⇒ [tex]56 = 2\pi r[/tex]
⇒ [tex]r=\dfrac{56}{2\pi }=\dfrac{28}{\pi }[/tex]
[tex]V=\pi \left(\dfrac{28}{\pi}\right)^2 \times3.2=\dfrac{2508.8}{\pi}=798.58 \textsf{ cm}^3 \textsf{ (nearest hundredth)}[/tex]
[tex]SA=2\pi \left(\dfrac{28}{\pi}\right)^2+56 \times3.2=\dfrac{1568}{\pi}+179.2=678.31 \textsf{ cm}^3 \textsf{ (nearest hundredth)}[/tex]
Simplify the expression:
7g+1x+3t
Answer:
7g+3t+x
Step-by-step explanation:
You really don't have to do anything to this equation because each number in this equation has a variable, but since 1x is just x you can remove the 1 and you new equation becomes:
7g+3t+x
Answer:
7g+x+3t
Step-by-step explanation:
All you do is remove the 1 because x and 1 are the same
Which of the following pairs of equations have the same solution set? Select all that apply.
MULTIPLY ANSWERS + answer asap!
Answer:
C and E
Step-by-step explanation:
please help me it's due tomorrow
Answer:
Uhm uhm i think its 10
Step-by-step explanation:
because 25% of 40 is 10
Sorry if wrong :,D
Match each expression in the top row with an equivalent expression in the bottom row.
Answer:
Step-by-step explanation:
Let's say :
|1|2|3|4|
|a|b|c|d|
so it would be:
1.b) 2.d) 3.c) 4.a)
[tex]2\sqrt{3x^{2} y}[/tex] = [tex]x\sqrt{12y}[/tex], [tex]2x\sqrt{6xy^{2} }[/tex] = [tex]y\sqrt{24x^{3} }[/tex], [tex]2y\sqrt{2x^{4} }[/tex] = [tex]x^{2} \sqrt{8y^{2} }[/tex], [tex]3x^{2} \sqrt{2y^{4} }[/tex] = [tex]xy\sqrt{18x^{2} y^{2} }[/tex]
What is an expression?An expression or algebraic expression is any mathematical statement which consists of numbers, variables and an arithmetic operation between them.
Given expression
(i) [tex]2\sqrt{3x^{2} y}[/tex]
= [tex]2x\sqrt{3y}[/tex]
= [tex]x\sqrt{12y}[/tex]
(ii) [tex]2x\sqrt{6xy^{2} }[/tex]
= [tex]2xy\sqrt{6x}[/tex]
= [tex]y\sqrt{24x^{3} }[/tex]
(iii) [tex]2y\sqrt{2x^{4} }[/tex]
= [tex]2x^{2} y\sqrt{2}[/tex]
= [tex]x^{2} \sqrt{8y^{2} }[/tex]
(iv) [tex]3x^{2} \sqrt{2y^{4} }[/tex]
= [tex]3x^{2}y^{2} \sqrt{2}[/tex]
= [tex]xy\sqrt{18x^{2} y^{2} }[/tex]
Hence, [tex]2\sqrt{3x^{2} y}[/tex] = [tex]x\sqrt{12y}[/tex], [tex]2x\sqrt{6xy^{2} }[/tex] = [tex]y\sqrt{24x^{3} }[/tex], [tex]2y\sqrt{2x^{4} }[/tex] = [tex]x^{2} \sqrt{8y^{2} }[/tex], [tex]3x^{2} \sqrt{2y^{4} }[/tex] = [tex]xy\sqrt{18x^{2} y^{2} }[/tex]
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The ratios 3/5 and 15/30 are written on the whiteboard. Are the ratios equal?
Answer:
No
Step-by-step explanation:
to change the denomiator from 5 to 30 you have to multiply by 6
if you multiply the denominater by 6, you also have to multiply the numerator by 6
so, [tex]\frac{3}{5}=\frac{18}{30}[/tex][tex]\frac{18}{30}\neq \frac{15}{30}[/tex]what is the answer in ft
(no link)
Answer:
22
Step-by-step explanation:
add them all together
The product of 7 and j is 91. What is j?
Answer:
13
Step-by-step explanation:
[tex]7j = 91[/tex]
Dividing both sides by 7, we have
[tex]j = 13[/tex]
Answer:
84
Step-by-step explanation:
just add 84 to 7 and you will get 91.
Solve for x and y. PLEASE HELP!! WILL MARK BRAINLIEST!!
Answer:
[tex]x=\sqrt{40}, y=\sqrt{104}[/tex]
Step-by-step explanation:
Note the triangle formed by x, y, and 8 is similar to the largest triangle
so x : c = 8 : y = y : 13, where c is the rightmost vertical length, c² = x² + 5²
From 8 : y = y : 13, we get
y² = 13*8 = 104, so
[tex]y=\sqrt{104}[/tex]
From x : c = 8 : y, we have xy = 8c
x²y² = 64c²
104x² = 64(25 + x²)
104x² = 1600 + 64x²
40x² = 1600
x² = 40
[tex]x=\sqrt{40}[/tex]
What is 20% of 59,000
Answer:
11800
Step-by-step explanation:
hope this helps
solve for x.
2x + 4
4x - 88
Answer:
x=+46
Step-by-step explanation:
2x+4=4x-88
We move all terms to the left:
2x+4-(4x-88)=0
We get rid of parentheses
2x-4x+88+4=0
We add all the numbers together, and all the variables
-2x+92=0
We move all terms containing x to the left, all other terms to the right
-2x=-92
x=-92/-2
x=+46
What are two forms an employee is required to fill out at the beginning of the employment process?
A. W2 and 1040
B. W2 and 19
C W2 and W4
D. W4 and 19
Answer:
A. W2 and 1040 to begin a job.
Answer: B.) W-4 and I9
Hope this helps :)
could you answer the question number b
Answer:
450 - 120 - 80
=250
2/5 × 250 = 100. A
3/5 × 250 = 120 B
Answer:
Grade A 2:9
Grade B 1:3
Grade C 4:15
Step-by-step explanation:
Students in grade A:
[tex]450-(120+80)=450-200=250[/tex]
if the ratio is 2:3 then
[tex]A=(250/5)(2)=(50)(2)=100[/tex] students
The ratio of students with grade A:
[tex]\frac{100}{450}=\frac{10}{45} =\frac{2}{9}[/tex]
= [tex]2:9[/tex]
Students with grade B.
[tex]B=250-100=150[/tex]
The ratio of B:
[tex]\frac{150}{450} =\frac{15}{45} =\frac{1}{3}[/tex]
[tex]= 1:3[/tex]
Ratio of students with grade C:
[tex]=\frac{120}{450} =\frac{12}{45} =\frac{4}{15}[/tex]
[tex]=4:15[/tex]
Hope this helps
True or false: (a) If A2 is defined then A is necessarily square. (b) If AB and BA are defined then A and Bare square. (c) If AB and BA are defined then AB and BA are square. (d) If AB
(a) True. Suppose A is a not a square matrix, with m rows and n columns. Then A² is not defined, because you can't multiply an m×n matrix by another m×n matrix.
(b) False. As an example, consider the matrices
[tex]A_{3\times2} = \begin{bmatrix}1&0\\0&1\\0&0\end{bmatrix}[/tex]
[tex]B_{2\times3} = \begin{bmatrix}-1&0&1\\0&0&1\end{bmatrix}[/tex]
Then both AB and BA are defined, with
[tex]AB_{3\times3} = \begin{bmatrix}-1&0&1\\0&0&1\\0&0&0\end{bmatrix}[/tex]
[tex]BA_{2\times2} = \begin{bmatrix}-1&0\\0&0\end{bmatrix}[/tex]
In general, you can multiply any m×n by any n×m matrix.
(c) True. Multiplying a m×n matrix by a n×m matrix always yields a m×m matrix, and multiplying a n×m matrix by a m×n matrix always yields a n×n matrix.
Need help don’t know how to solve for x
Answer:
x=15
Step-by-step explanation:
They are VERTICLE ANGLES meaning 125degrees = to the equation on the right.
(5x+30)=125
5x=85
x=15
5 8/9 - 2 5/7
A 11/63
B 3 3/7
C 3 11/63
D 4 1/2
Answer: c
Step-by-step explanation:
Answer:
C [tex]3\frac{11}{63}[/tex]
Step-by-step explanation:
[tex]5\frac{8}{9} -2 \frac{5}{7}[/tex]
= [tex]\frac{53}{9} - 2\frac{5}{7}[/tex]
= [tex]\frac{53}{9} - \frac{19}{7}[/tex]
= [tex]\frac{200}{63}[/tex]
= [tex]3\frac{11}{63}[/tex]
pls branliest
40
28
60
42
A. AA-
B. SSS-
C. SAS-
D. Not Similar
I need help I can’t figure this out
Answer:
I know this might not be a solid answer but its out of B or C but most likely B because they are all on the side of the triangle so pretty much B
Polly surveyed 850 teenagers to find out their favorite type of music. She found that 32% of the teenagers surveyed like hard rock.
Part A: How many teenagers surveyed like hard rock? Show your work. (4 points)
Part B: In another survey, Damian found that 75% of the total number of teenagers surveyed like pop music. If 150 teenagers like pop music, what is the total number of teenagers that Damian surveyed? Show your work. (4 points)
Part C: Give an example of a situation in which a percentage is greater than 100%. (2 points) i need help on part B.
Answer:
In explanation
Step-by-step explanation:
272 for part A because say you took a test out of 850 and you got a total of 272 of them right then you would of gotten a 32%
200 for 2 because if 75% of them liked pop music and 150 teenagers what the number of teenagers surveyed then that means 200 of them were surveyed because 150 out of 200 is 75%
I don't know the last one because if you had anything there only could get a 100%(im sorry for this one it's a little confusing.
Hope this helps have a great afternoon:)
Condense the expression log 2x + log(x² - 9) - log x +3
Use the vertical method to multiply (4a3 – 2a + 3a2 + 1) and (3 - 2a + a²).
What would be the value of A?
Answer:
.a^3-2a+3a^2+1\right)and\left(3-2a+a 2\ri
Step-by-step explanation:
pls brainliest
Answer:
the answer is 4a^2
Step-by-step explanation:
i just took the test
jenny is a 60 percent free-throw shooter She gets to shoot a second free throw if and only if she makes her first shot. She can score 0 points( if she misses her first shot), 1 point (she makes her first but misses her second), or 2 points ( she makes both shots.)
Assuming that the probability for each shot is independent, what number of points is Jenny most likely to make?
Assuming that the probability for each shot is independent,how many points on average, can jenny expect to make when she shoots a one-and-one (when she only gets a second shot if she makes the first)?
suppose jenny gains confidence after making her first free throw and the probability of her making the second free throw goes up to 70%. now, what number of points is jenny most likely to make when she shoots a one-and-one?
Answer:
I can't help I don't get this answer at all
Write an equation of the line that passes through the point (–7, –9) with slope –4.
Answer:
D. y + 9 = -4( x + 7 )
slope -4
y-intercept (0,-37)
-
(-7 , -9 ) - slope -4
by using slop-intercept form
y = -4x - 37
put yes or no if the number 4 will make each equation true
Answer:
1 - NO = 0.25
2 - NO = 5\4
3 - YES
4 - YES
your class agreed to have a fundraising for the upcoming christmas party on amount of 4 pesos will be paid for the first day and will increase by one peso for each following day based on the project based on the projected budget needed each of you in the class should have 165 pesos at the end find the maximum number of days by which you can complete paying they 165 pesos
Answer:
what're we ok with me if it's ok to you zoo lights and d and d and how old are you and
Add 9 to me. then multiply by 3. if you subtract 16 and then add 7, you get 27 what number am I?
Answer:
3
Step-by-step explanation:
Just do inverse:
27-7=20
20+16=36
36÷3=12
12-9=3
To check:
3+9=12
12×3=36
36-16=20
20+7=27
✅
Answer:
It should be 3.
Step-by-step explanation:
27-7=20+16=36÷3=12-9=3
If B=w +9w- and A=3- 10w, find an expression that equals B - A in
standard form.
Answer:
9 w2 + 11 w - 3
Step-by-step explanation:
A manufacturer uses a mold to make a part in the shape of a triangular prism. The dimensions of this part are shown below.
Which estimate is closest to the volume of cubic millimeters of the part?
A. 108
B. 217
C. 440
D. 880
