Answers
Answer:
x=4
Step-by-step explanation:
Its an equilateral triangle so all angles and side lengths are the same.
2x-1=x+3
x=3+1
x=4
checking the work
4+3=8-1
7=7
Related Questions
In the school store, pencils cost 15 cents each and erasers cost 10 cents each. There is no tax. Gabby wants to spend exactly $2.00 on pencils and erasers.
How many of each can she buy? Provide detail explanation of your solution process and all possible strategies.
Answers
she bought 10 pencils and 5 erasers
Let x represent the number of pencils and y represent the number of erasers.
Gabby wants to spend exactly $2.00 on pencils and erasers, hence:
0.15x - 0.1y = 2 (1)
Therefore x = 10 and y = 5
Therefore she bought 10 pencils and 5 erasers.
Find out more at: https://brainly.com/question/25035724
What is the equation written in vertex form of a parabola with a vertex of (9, -1) that passes through (7. 7)?
O
A. y = 2(x - 992 - 1
B. y = 2(x + 1)2 - 9
O C. y = 2(x - 7)2 + 7
D. y = 7(x - 9)2 - 1
Answers
Answer:
[tex]y = 2\, (x - 9)^{2} - 1[/tex].
Step-by-step explanation:
If the vertex of a parabola is [tex](h,\, k)[/tex], there would exist a constant [tex]a[/tex] ([tex]a \ne 0[/tex]) such that the following would be an equation for this parabola:
[tex]y = a\, (x - h)^{2} + k[/tex].
The equation above is in the vertex form.
In this question, the vertex of this parabola is [tex](9,\, -1)[/tex]. (Such that [tex]h = 9[/tex] and [tex]k = -1[/tex].) Therefore, the equation of this parabola in the vertex form would be:
[tex]\text{$y = a\, (x - 9)^{2} + (-1)$ for some $a \ne 0$}[/tex].
It was also given that the point [tex](7,\, 7)[/tex] is on the parabola. In other words, if [tex]x = 7[/tex] and [tex]y = 7[/tex], the equation of this parabola ([tex]\text{$y = a\, (x - 9)^{2} + (-1)$}[/tex]) should be satisfied. In other words:
[tex]7= a\, (7 - 9)^{2} + (-1)[/tex].
Solve this equation for [tex]a[/tex].
[tex]a = 2[/tex].
Therefore, the equation of this parabola in vertex form would be[tex]y = 2\, (x - 9) + (-1)[/tex], which is equivalently [tex]y = 2\, (x - 9)^{2} - 1[/tex].
Find the length s of the circular arc. (Assume r = 2 and = 116°.)
Answers
Answer:
length of an arc = θ/360 × 2πr
θ=116°
r=2
π= 3.14
l= 116/360 ×2×3.14×2
l= 4.047= 4.05cm
Solve for x
3x+5≡0 mod 9
Answers
3x+5=0
3x=0-5
3x=-5
Divide both sides by 3
-1.6666.......
Hope it helps.
As for mod 9, I don't understand.
Answer:
[tex]x=-\cfrac{5}{3}[/tex]
[tex]x=-1.666[/tex]
Step-by-step explanation:
[tex]3x+5=0[/tex]
[tex]3x+5-5=0-5[/tex]
[tex]3x=-5[/tex]
[tex]\cfrac{3x}{3}=\cfrac{-5}{3}[/tex]
[tex]x=-\cfrac{5}{3}[/tex]
What statement is true
Answers
which of the following quadratic solutions has the following solution
Answers
Answer:
The first and second one
Step-by-step explanation:
plug in x :)
m is a right angle in triangle lmn. the measure of angle n is 67 and the length of mn is 8. What is the length of the hypotenuse?
Answers
Help help pleaseplaaZa help
Answers
Answer: 10
Step-by-step explanation:
using ratio;
[tex]\frac{4}{x} =\frac{2}{5}[/tex]
[tex]\frac{4}{2} = \frac{x}{5}[/tex]
2 × 5 = x
x = 10
please give me a brainliest answer
What is the square root of PEMDAS?
Answers
Answer:
square roots fall under exponets
Step-by-step explanation:
Square roots are parts of exponents because a square root is just that number to the power of 0.5
Please give brainliest
PLEASE HELP!!! Question 1 & 2
Answers
Answer: I don't understand?
What question?
Step-by-step explanation:
PLEASE HELP!!! WILL GIVE BRAINLIEST!!!!
Answers
Answer:
7/20 is the scale factor
Step-by-step explanation:
We can see that Hexagon JKLMNO is bigger than Hexagon PQRSTU. This means that the scale factor is less than one.
LK is similar to QR.
QR/LK
7/20 is the scale factor.
help me guys !!!!!!!!
Answers
Answer:
67
Step-by-step explanation: because your x for y and x
1. Brianna makes $9.60 per hour. She works 5 hours and 40 minutes on
Saturday. On Sunday, she worked for 1 hour and 10 minutes less than she
did on Saturday. How much money did Brianna make combined on
Saturday and Sunday?
A $86.40
B. $97.60
C. $99.20
D. $108.80
Answers
Kristen babysits 38 a week for $6.80 per hour. She earns an additional $224.00 in tips. How much did she make in 1 week?
Answers
Answer:
$482.40
Step-by-step explanation:
50 là số chẵn hay lẻ
Answers
Answer:
Step-by-step explanation:
50 is even.
If number is divisible by 2, then it is even
Match the definition to the word.
1. a female child
goat
2.
a structure that is closed in by wire or bars to keep animals
inside
judge
3. a contest that a person or a team tries to win
edge
4. a sweet candy for chewing
gum
5. one side of a sheet of paper in a book or magazine
page
6. an animal with short horns and coarse hair
game
cage
7. the place where something ends; a border
girl
8. someone who makes decisions in a court of law
Answers
2. Cage
3. Game
4. Gum
5. Page
6. Goat
7. Edge
Good luck with everything:)
In Exercises 15–20, find the remaining zeros of a polynomial
P(x) with real coefficients and with the specified degree
and zeros.
19. Degree 6; zeros: 0, 5, 1, 3i
Answers
Answer:
sending love to you that work is hard
Answer:
Assuming that the multiplicities of the five aforementioned roots ( {0, 5, 1, 3i, -3i} ) are each 1, the 6th zero can be any real number.
Step-by-step explanation:
Because P(X) has real coefficients, and 3i is a zero, we conclude that -3i is also a zero of P(X). Assuming that the multiplicities of the five aforementioned roots ( {0, 5, 1, 3i, -3i} ) are each 1, the 6th zero can be any real number.
simplify each expression by combining like terms -x+8x
Answers
Answer:
7x
Step-by-step explanation:
when you add -1 aka -x to 8 8x it takes away one, so 7x
what are the steps to this math problem 3+6(5+4)=
Answers
Exponents
Multiply
Divide
Add
Subtract
start w parenthesis 5+4=9
6x9=57
57+3=60
1 X 30 =
0.1 X 30 =
0.01 X 30 =
Answers
Answer: 0.3
Step-by-step explanation:
i used a calculator ya hope this helps
15. Five different line segments are to be drawn so that each of the segments has an ending point at Point P. What is the greatest number of these line segments that could be intersected by some other line not drawn through P ?
A. 5
B. 4
C. 3
D. 2
Answers
A company charges $300 for every 2 pounds of oranges sold plus a $3.00 shipping fee,
Based on this information, which graph best shows this relationship between the cost of oranges, y, and the number of pounds,
Answers
Step-by-step explanation:
5(2x – 3) = x – 15 + 9x for x
Answers
see the attachment
hope it helps
Answer:
Step-by-step explanation:
5(2x – 3) = x – 15 + 9x
10x-15=10x-15
10x-10x=15-15
0=0
Given the definitions of f(x) and g(x) below, find the value of
(gof)(0)
f(x) = -3x + 5
g(x) = 2x² + 2x - 3
Answers
50 pts if u anser this 4 me. thanks!
Answers
Answer:
the 1 mile and 3,218 meters in step 1 should be switched
Answer:
the 1 mile and 3216 should be switched
Step-by-step explanation:
it should be 3216 over 1
Help me pls
Thank u ☺️
Answers
Answer:
Step-by-step explanation:
Add the -5.57 to both sides then divide it by 2 which is -0.91
Pls help me find the answer of the ratio
Answers
Answer:
pretty sure it's 10 1/2
Answer:
I think the answer is D. 12 1/2
Step-by-step explanation:
If you add up the two thing it becomes: 15 cups of flour and 6 cups of milk. So if you divide 15 by 6, it's 2.5. Now all you have to do is 5 (since there are 5 cups of milk) times 2.5, and you get 12.5. And 12.5 is 12 1/2 in fraction form. Hence, the answer is D. 12 1/2.
Joey has $330 in his bank account and takes out $410, then takes out another $20. How will his knowledge of positive/negative numbers allow him to work out in his head, how much money he owes the bank?
Answers
Arrange these numbers in order from least to greatest.
0.125
2.5%
1/4
Answers
Answer:
2.5%, 0.125, 1/4
Step-by-step explanation:
There is a bag filled with 3 blue and 5 red marbles.
A marble is taken at random from the bag, the colour is noted and then it is not replaced.
Another marble is taken at random.
What is the probability of getting 2 reds?
Answers
Answer:
5/14Step-by-step explanation:
There are 5 red marbles out of 8.
The probability of the first red:
P(r1) = 5/8Now we have 7 total marbles and 4 of them are red.
The probability of the second red:
P(r2) = 4/7The probability of two red is:
P(rr) = 5/8*4/7 = 5/14