Answer:
18x^2 - 17x +9
Step-by-step explanation:
Original equations:
10x^2 - 10x + 2
-8x^2 +7x - 7
Calculations:
10x^2 - (-8x^2) = 18x^2
(-10x) - 7x = -17x
2 - (-7) = 9
Together, they make: 18x^2 - 17x + 9
1. How do you determine the rule of a function?
Answer:
if it pasts the vertical line check
Step-by-step explanation:
so if there are 2 dots on the same line of a graph it's not a function. or if it's based on x's and y's there can not me x's that are the same number. they can't repeat but y's can!
An item costs 340 before tax, and the sales tax is 20.40.
Find the sales tax rate. Write your answer as a percentage.
Answer:
Step-by-step explanation:
To find out the sales tax rate, we divide the sales tax by the cost of the item. This will give us what percent of the cost of the item the sales tax is equal to.
So, 20.4 divided by 340 = 0.06
To convert to percent, we multiply 0.06 by 100=6. Therefore, the sales tax rate is 6%.
Check:
340 times 0.06 (the sales tax rate) is 20.4 (the sales tax).
pls helpppppppppppppppp Which value of y makes the equation 12y−3=5 true?
y is equal to 2
y is equal to 1
y is equal to 2 thirds
y=13
Answer:
y = 2/3
Step-by-step explanation:
so 12y-3=5, add the 3 to the 5 to get 12y=8. Then divide the 12y by 12 and the 8 by 12. In so you geet y=2/3
Answer:
y is equal to 2 thirds (y = 2/3)
Step-by-step explanation:
12y − 3 = 5
Substitute the given options to see which one will provide a true statement:
If y = 2:
12y − 3 = 5
12(2) − 3 = 5
24 − 3 = 5
21 = 5 (False statement, so it's not the right answer).
If y = 1:
12(1) − 3 = 5
12− 3 = 5
9 = 5 (False statement).
If y = 2/3:
12(2/3) − 3 = 5
8 - 3 = 5
5 = 5 (True statement).
If y = 13:
12(13) − 3 = 5
156 - 3 = 5
153 = 5 (False statement).
Therefore, the correct answer is: y = 2/3.
The solution of equation 3n - 7 = 3 - 2n is????? I need this ans fast plsss
Answer:
n=2
Step-by-step explanation:
3n-7=3-2n
5n=10 (add 2n on both sides and also add 7 on both sides of the equal sign)
n=2
DUBS
Answer:
[tex]n=2[/tex]
Step-by-step explanation:
[tex]3n-7=3-2n[/tex]
[tex]3n-7+7=3-2n+7[/tex]
[tex]3n=-2n+10[/tex]
[tex]3n+2n=-2n+10+2n[/tex]
[tex]5n=10[/tex]
[tex]\cfrac{5n}{5}=\cfrac{10}{5}[/tex]
[tex]n=2[/tex]
A rational algebraic equation is also known as______
A.fractional equation
B.linear equation
C.quadratic equation
D.radical equation
How many groups of 12 pound are in 234 pounds?
Answer:
19.5
Step-by-step explanation:
-5.8 is a rational number and an integer. true or false HELP HELP HELP
Answer: This is false because although -5.8 is a rational number, it is not a integer because the number has a decimal point and only whole numbers are integers.
Step-by-step explanation:
Hope this helps!
Answer: True
Step-by-step explanation:
1.) Yvonne purchased $46 worth of items for a theme party. A small bag of party hats cost $2.75, a pack of napkins cost $3.50, and a set of cups and plates cost $2.00. If Yvonne bought 4 bags of hats, and 2 packs of napkins, how many cup and plate sets did she buy?
Answer:
14
Step-by-step explanation:
$46 in total
Hats: $2.75 * 4 bags = $11
Napkins: $3.50 * 2 packs = $7
11 + 7 = 18
$46 - $18 = $28
$2.00 / 28 = 14
If cups and plates were $2.00, that means it would take 14 sets to fill the remaining $28.
Write a equation given the point and slope or two points
17.) (-5,-11) and (-2,1)
18.) (-6,8) and (3,-7)
Please
how much will I pay for 4m of cloth if 1 m cost $17.25?
Answer:
you will pay $69 for 4m of cloth if 1m costs $17.25
Step-by-step explanation:
17.25 x 4 = 69
(+41)x(+16)
pleasderr
Answer:
[tex]656[/tex]
Someone pls help me I will make you brain
It cannot be compared, so answer 3 :)
An equilateral triangle with side length 2.5 is dilated with a scale factor of 6. What is the length of one side of the new figure?
2.5
2.5
6
6
7.5
7.5
15
Answer: 15
Step-by-step explanation:
Side length =2.5
length new side = 6x6.5=
15
Another problem I need help with!
Answer:
or
Step-by-step explanation:
Mahni plans to spend the next 12 weeks saving some of her income. She will save $x a week for the first 6 weeks and then $(2x − 30) a week for the following 6 weeks. If she managed to save $213 in the first six weeks, how much did she save in total over 12 weeks? Explain correctly how to do this to get Brainliest ANSWER
$x=213$
For first six weeks she saved 213$
Now
For next 6weeks
[tex]\\ \sf\longmapsto 2x-30=2(213)-30=426-30=396\$[/tex]
Total savings:-
.[tex]\\ \sf\longmapsto 396+213=609\$[/tex]
Total savings in first 6 weeks :
[tex]6x[/tex]Totally savings in second 6 weeks :
[tex]6(2x - 30)[/tex]If she saved $ 213 in first 6 weeks, then
[tex]6x = 213[/tex][tex]x = \dfrac{213}{6} [/tex][tex]x = 35.5[/tex]now, money saved in second week :
[tex]6(2x - 30)[/tex][tex]6((2 \times 35.5) - 30)[/tex][tex]6(71 - 30)[/tex][tex]6 \times 41[/tex][tex]244[/tex]The money saved in total 12 weeks :
[tex]213 + 244[/tex][tex] \$457[/tex]a/m=4g-h
need help with this problem
Answer:
Solve for A
A = -m ( h - 4g) , m ≠ 0
Solve for g
g = [tex]\frac{hm+A}{4m}[/tex], m ≠ 0
Step-by-step explanation:
Jerry's mother is 33 years old and she is eleven less than four times Jerry's age. How old is Jerry?
Answer:
11 years old
Step-by-step explanation:
33+11=44 (four times of Jerry's age)
44÷4=11 (Jerry's age)
Hope this helps! Thanks.
PLEASE PLEASE HELP WILL MARK BRAINIEST PLEASEEEE
the measure of angle a is -2x+35 degrees. the measure of angle b is quadruple angle a. write an expression for their sum.
Answer:
= -10x + 175
Step-by-step explanation:
(4(-2x+35)) + (-2x+35)
= -8x+140 - 2x + 35
= -10x + 175
Wen says the function is continuous, because the number of people is unlimited. Is Wen right or wrong?
Answer Wen is incorrect. The reason being is that the function does not continue in both directions from the origin. Since we cannot have a negative value of people, we cannot use all values of x as inputs in the equation. Therefore, it is not continuous.
what are the solutions of x^2-4x+5=0
A. x=2+i/3 or x=2-i/3
B. x=1+i/2 or x=1-i/2
C. x=3+i or x=3-i
D. x=2+i or 2-i
Answer:
Should be D.
Step-by-step explanation:
Because you can't factor the equation you use the quadratic formula. By using it you should get 4 plus or minus the square root of -4 all over 2. Simplified would be 2 plus or minus i
Which pair of angles are congruent?
A. 4 and 5
B. 1 and 7
C. 2 and 5
D. 6 and 8
Answer:
B: 4 and 5
Step-by-step explanation:
I'm not 100% sure but all of the other angles don't look congruent
9. A tailor has 23 metres of cloth. She wants to make 7 baju kurung of the same size. She then has 2 metres of cloth left. How many metres of cloth did she use to make each baju kurung?
Answer:
The tailor used 3m per baju kurung.
Step-by-step explanation:
The tailor began with 23m of cloth and at the end had 2m of cloth left. You calculate how many meters of cloth she used all together by subtracting 2 from 23:
23m - 2m = 21m
Then you find out how many meters she used per baju kurung by dividing 21 by 7:
21m / 7m = 3m
Can you determine each point-slope equation and type the correct code? Please remember to type in ALL CAPS with no spaces.
PLEASE HELP NOW!!!
Answer:
Step-by-step explanation:
Maggie spent $4.05 dollars on cheese and fruit at the farmer's market. She bought 1/8 pound of apples,1/4 pounds of pears,and 1.25 pounds of bananas. If fruit cost $0.80 per pound ,how much did Maggie spend on cheese?
Total weight of fruit: 1/8 + 1/4 + 1.25 = 1.625 pounds
Cost of fruit: 1.625 x 0.80 = $1.30
Cost of cheese = total spent - cost of fruit:
Cost of cheese = 4.05 - 1.30 = $2.75
Answer: $2.75
Answer:
1+2=3
3×0.8=2.4
4.05-2.4=1.65
Step-by-step explanation:
Find the equation of the line with slope = -8 and passing through (9,-73). Write your equation in the form
y
=
m
x
+
b
y
=
m
x
+
b
.
Answer:
y = - 8x - 1
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + b ( m is the slope and b the y- intercept )
Here m = - 8 , then
y = - 8x + c ← is the partial equation
To find c substitute (9, - 73 ) into the partial equation
- 73 = - 72 + c ⇒ c = - 73 + 72 = - 1
y = - 8x - 1 ← equation of line
Classify each number below as a rational number or an irrational number.
-15 π . . . . . irrational
-√3 . . . . . irrational
-√4 = -2 . . . . . rational
-1/11 . . . . . rational
-27.92 (line over the 92) = -27+92/99 . . . . . rational
If 4x - 9 = 35,
find the value of 6x + 4
Step-by-step explanation:
4x=44
x=11
6x+4= 6*11+4= 70
Answer:
6x+4=70
Step-by-step explanation:
To solve this, first, we need to know what x is. To do this, we need to solve the equation:
4x-9=35
The first step to solving this is to add nine to both sides, since we need to do the inverse of subtraction to get our answer.
4x-9+9=35+9
4x=44
Now, do the inverse of multiplying by four, which is dividing by four, to both sides.
4/4x=44/4
x=11
Now that we know what x is, we can find the value of 6x+4. Simply plug in 11 for x.
6(11)+4
66+4
70
Our answer is 70.
My teacher is teaching us how to put points into y - y1 = m ( x - x1) and she give us a set of points and a slope. But i don't know how to plot this one question in. The slope is unidentified and the set of points are (2,5). Ty!!
Answer:
Step-by-step explanation:
The point will be 2 on the x-axis and 5 on the y axis.
Answer:
I feel the question is incomplete but there's another formula (which we can only use if the points are the intercepts on the x and y axis)
x/a + y/b = 1( a= intercept on x axis ; b = intercept on y axis )
x/2 + y /5 = 1
multipy both sides by 10
5x + 2y = 10
2y = 10- 5x
divide both sides by 2
y = 5 - 5/2x
y = -5/2 + 5(the equation of the line if the two points are the intercepts on the both axis
Which inequality symbol would you use to represent the following words or phrases? Can you come up
with more examples?
b. farther than
C. younger than
d. up to
a. at most
Answer:
C
Step-by-step explanation:
sana maka tulong
i purple u
What is 0.000000037 written in scientific notation?
Answer: 3.7 x 10⁻⁸
Step-by-step explanation: None