Answer: Alvin is 78, Elga is 26
Step-by-step explanation:
Let's first start by naming the variables:
a = Alvin's age
e = Elga's age
a = 3e
a + e = 104
substitute a (in the second equation) as 3e
3e + e = 104
4e = 104
e = 26
Substitute e as 26 into either equation
a = 3(26)
a = 78
Help please! I really need it! please dont guess if you dont know, dont answer.....( this is basic geometry im just dum'b)
Answer:
D
Step-by-step explanation:
angles 2 and 6 are corresponding angles and are congruent if the transversal crosses through two parallel lines
The school’s fish eat 1/5 jar of food per day. How many days will 4 1/2 jars feed them? Possible answers
: 22 1/2days, 21 days, 21 1/2 days, 22 days
Answer:
22 1/2 days
Step-by-step explanation:
All you gotta do is divide!
write an equation for the line that passes through the points (-1,-12) and (4,8)
Answer:
y = 4x - 8
Step-by-step explanation:
(-1, -12) & (4, 8)
First you want to find the slope of the line that passes through these points. To find the slope of the line, we use the slope formula: (y₂ - y₁) / (x₂ - x₁)
Plug in these values:
(8 - (-12)) / (4 - (-1))
Simplify the parentheses.
= (8 + 12) / (4 + 1)
= (20) / (5)
Simplify the fraction.
20/5
= 4
This is your slope. Plug this value into the standard slope-intercept equation of y = mx + b.
y = 4x + b
To find b, we want to plug in a value that we know is on this line: in this case, I will use the second point (4, 8). Plug in the x and y values into the x and y of the standard equation.
8 = 4(4) + b
To find b, multiply the slope and the input of x(4)
8 = 16 + b
Now, subtract 16 from both sides to isolate b.
-8 = b
Plug this into your standard equation.
y = 4x - 8
This is your equation.
Check this by plugging in the other point you have not checked yet (-1, -12).
y = 4x - 8
-12 = 4(-1) - 8
-12 = -4 - 8
- 12 = -12
Your equation is correct.
Hope this helps!
This also came with it :Complete the table for the following function:
Y = 8x - 5
Please help me and dont mind my work I did on the side im pretty sure I got it wrong.
Answer:
x y
3 19
5 35
-2 -21
1 3
4 27
Step-by-step explanation:
I went through and mutliplied each x value by 8 and then subtracted 5. You were almost there!
Nora and Violet had saved their babysitting money at a ratio of 5:9. Nora has $48 less than Violet. How much money do they have in total?
Answer:
168
Step-by-step explanation:
9-5 = 4 = 48
48 / 4 = 12
12 x ( 9 + 5 )
168
Help me plss plss I really need help I have a f
Answer:
A. 5 1/2 and D. 11/2
Step-by-step explanation:
Make improper fraction
8*1+3=11/8
Solve by multiplying:
4*11/8
44/8
Simplified is 11/2
We can turn it back into a mixed number
2*5+1=11 so 5 1/2
Lee is forming kickball teams that include all of the students who signed up from two schools. Each team must have the same number of players and be from the same school. What is the greatest number of players Lee can put on each team?
Answer:
The answer is (12 players)
Step-by-step explanation:
2 x 2 x 3 = 12
36 - 12 = 24
A quadratic equation has a
discriminant equal to 5. What
does this tell you about the
solution(s) to the equation?
Answer:
[tex]\boxed {\boxed {\sf 2 \ real \ solutions }}[/tex]
Step-by-step explanation:
The quadratic formula is:
[tex]{x = \frac{{ - b \pm \sqrt {b^2 - 4ac} }}{{2a}}}[/tex]
The discriminant of a quadratic is just the expression under the square root, or [tex]b^2-4ac[/tex]. This can tell us the number of solutions a quadratic has.
If the discriminant is:
Positive = 2 real solutions Equal to Zero = 1 real double/repeated solution Negative = 0 real solutions, but 2 imaginary solutionsOur quadratic equation has a discriminant of 5, which is positive. Therefore, it has 2 real solutions.
Given two angle measures and the length of the included side, does this side length affect the number of triangles that can be drawn? Explain. ▼ since two angle measures and the length of the included side are given, there is ▼ only one more than one way to draw the triangle. The number of triangles that can be drawn is ▼ not affected affected by the length of the given side
Answer:
Step-by-step explanation:
Since two angles and the length included side is given, we can make only one triangle with this measures. The number of triangles that can be drawn is affected by the length of the given side.
Use the formula v= u + at to find the final velocity (in m/s), when
• the initial velocity is 3 m/s
• the acceleration is 2.5 m/s?
• the time is 12 seconds
Write the quadratic equation where the roots are -1/3 and 5
Answer:
f(x) = 3x² - 14x - 5
Step-by-step explanation:
multiply the factors: (x + 1/3)(x - 5)
x² - 5x + 1/3x - 5/3
x² -14/3x - 5/3
multiply by 3 to eliminate fractions:
3x² - 14x - 5
Could anyone help, if you could?
Answer: Your answer is B! Hope you have an awesome day, and be kind be You!!! <3
Step-by-step explanation: Also, I'm 3D printing the Tesla Cyber truck, and this is the design I have so far. What do you think?
John receives $9,500 per month after tax. If his annual gross salary is $120,000, How much does he pay in tax per year?
Hope this helpfully......
but if it's not,im so sorry
Pls help me, I don't know how to do it?:(
Answer and Step-by-step explanation:
Alot of these can be solved with the table up above the problems.
A, B, and C.
According to the table, every time a value has an exponent of 0, it would equal to 1. Since all A B and C values follow the 0 exponent, their value is 1.
D.
According to the table, when we have a negative exponent, the number gets turned into a fraction of [tex]\frac{1}{x^x}[/tex]
Since our value is 9^-2, do as followed :
[tex]\frac{1}{9^2}[/tex]
Solve what is 9^2 :
[tex][\frac{1}{81} ][/tex]
E.[tex]\frac{1}{x^{-5} }[/tex]
This question is different, since we have to go backwards, we have to switch the negative exponent to a positive exponent and rid the fraction.
[tex]x^5[/tex]
F.[tex]5a^3b^{-2}[/tex]
Since we have one negative exponent, follow the fraction rule but instead of having one as the numerator, have 5a^3.
[tex]\frac{5a^3}{b^{2}}[/tex]
Fill in the table :[tex]-3^4 = -3*-3*-3*-3=-81[/tex]
Since -3 is in parenthesis, we can rid the negative along with the parenthesis :
[tex](-3)^4=3^4=3*3*3=81[/tex]
Follow the negative exponent rule :
[tex](-3)^{-4}=\frac{1}{(-3)^4} =\frac{1}{3^4} =\frac{1}{3*3*3*3}= \frac{1}{81}[/tex]
Follow the negative exponent rule yet again :
[tex]-3^{-4}=-\frac{1}{3^4} =-\frac{1}{3*3*3*3} =-\frac{1}{81}[/tex]
1. Two students went to McDonald's. They each bought the same snack, which included a shake
and a burger. The shakes cost $2 each. In total, they spent $12.
Part A: Enter an equation to represent this equation. Let x represent the cost of one burger.
Part B: Enter the cost of one burger.
Answer:
12-2=10 b=10
Step-by-step explanation:
I don’t know if it’s true or false I need help
Answer:
True
Step-by-step explanation:
for every 5 red cars there are 8 black cars. If there are 24 more black cars than red cars how many total vehicles are there
Answer:
15 red cars + 24 black cars = 38
The total vehicles are 104.
What is an expression?Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.
Given that;
For every 5 red cars there are 8 black cars.
And, There are 24 more black cars than red cars.
Here, For every 5 red cars there are 8 black cars.
Hence, Number of red cars = 5x
Then, Number of red cars = 8x
And, There are 24 more black cars than red cars.
Hence, We get;
⇒ 24 + 5x = 8x
Solve for x as;
⇒ 24 = 8x - 5x
⇒ 24 = 3x
⇒ x = 8
Thus, Number of total vehicles = 5x + 8x
= 5×8 + 8×8
= 40 + 64
= 104
Learn more about the mathematical expression visit:
brainly.com/question/1859113
#SPJ5
anyone no 8th grade math if so please help my sister out
Answer:
2/5
Step-by-step explanation:
you want to start with the point on the left and then count 2 up to the line that the other point is on than you count over 5 to the point on the right
then you put rise over run which makes it 2/5
Answer:
2/5
Step-by-step explanation:
rise over run formula
Therefore the slope is increasing by two fifths units.
2/5 is your answer. ❤
Brainliest please!? ✌
In ΔQRS, s = 860 inches, q = 240 inches and ∠R=144°. Find the length of r, to the nearest inch.
Answer:
1064
Step-by-step explanation:
Answer: 1064
Step-by-step explanation:
Consider the two account balances.
Which statement is true?
*please help, will mark as brainliest*
Answer: I believe the answer is B
Step-by-step explanation:
Usually if there is a negative with regards to balance it represents debt.
A circle has circumference 33.9 cm. What is the area of the circle? Use 3.14 for .
The area of the circle is about cm?
(Round the final answer to the nearest whole number as needed. Round all intermediate values to the nearest thousandth as needed.)
Answer:
The area is 902[tex]cm^{2}[/tex]
Step-by-step explanation:
[tex](\frac{33.9}{2})^{2}[/tex] * 3.14
= [tex]16.95^{2}[/tex] * 3.14
= 287.303 * 3.14
≈ 902[tex]cm^{2}[/tex]
PLS HELP. I dont understand math
Answer:
a) 2 + 1 = 3
4 + 2 = 6
6 + 3 = 9
b) Yes
c) Yes, since you are adding b to two b, which results in 3b
Step-by-step explanation:
Hope that helps!
Select the correct answer.
What is the current value of a future sum of money called?
А. Current value
B. Present value
C. Future value
Answer:
C. Future value
Step-by-step explanation:
It says FUTURE value so its the future value?(i think im not too sure)
hope this helped :))
Answer:
B.) Present Value
Step-by-step explanation:
Present value is the current value of a future sum of money.
A company is tracking how many of the cell phones it produces do not meet specifications. It runs a simulation 100 times and records how many defects are in each simulated sample of 1000 phones.
Answer: The p-value is 0.18, which is more than 0.05. Fail to reject the null hypothesis.
Step-by-step explanation: Well I took the quiz and that was the answer...
Can you help me please I can't get it
Answer:
-2x - 6 = 2 - 4x - (x - 1)
-2x - 6 = 2 - 4x - x + 1
-2x - 6 = 3 - 5x
3x = 9
That is the furthest it can be simplified without solving it.
Answer is x=3 if needed.
Please brainliest if this helped.
Find slope of a line using points (2,0) and (4,3)
Logan is 2 years older than Lindsey. Five years ago, the sum of their ages was 30. Find Lindsey’s
current age.
Answer:
lindsey = x = 19
logan = x + 2 = 21
Step-by-step explanation:
lindsey =x
logan = x + 2
-------
5 yrs back
lindsey = x - 5
logan = x + 2 - 5 = x - 3
~~~~~~~~~~
x- 5 + x - 3 = 30
x + x - = 30 +5 +3
2x = 38
x = 38/ 2 = 19
What is the area of the figure? O 1240 units? 0 1250 units? o 2490 units? 0 3730 units
Answer:
2490
Step-by-step explanation:
The 2 shapes are triangle and trapezoid
Area of a triangle formula: A= h×b/2
A=40×62/2
A=1240
Area of a trapezoid formula: base¹+base²/2×height
A= 38+62/2×25
A=1250
Add both areas together
1250+1240=2490
State if the three numbers can be measures of the sides of a triangle. 11,6,3
Answer:
no ..they can't as 6+3 is not greater than 11
solve for x
(5x+6)(6x-25)=180
Step-by-step explanation:
5x+6+6x-25=180
We move all terms to the left:
5x+6+6x-25-(180)=0
We add all the numbers together, and all the variables
11x-199=0
We move all terms containing x to the left, all other terms to the right
11x=199
x=199/11
x=18+1/11