Answer:
hi
Step-by-step explanation:
We see a set of linear equations. Hence, a system of linear equations. So we solve them by process of elimination, multiplying the top equation by 5 to eliminate first such that
(2x+y=20)*5
6x-5y=12
-----------------------------------------
10x+5y=100
6x-5y=12
--------------------------------
16x = 112 .............After dividing 16 we get
x = 7
Now we plug x = 7 back into the original first equation to obtain the y value such that
2(7) + y = 20
12 + y = 20
-12 -12
------------------
y = 8
I hope this helped!
What is X if
+X=
8
2
1
-6 -3
O
6
9
-6 -3
O
-2
-7
-4
1
O
-2 -7
-1
С O
7
Answer:
[tex] X =
\begin{bmatrix} - 4 & 1 \\ - 2 & - 7\end{bmatrix}[/tex]
Step-by-step explanation:
[tex] \begin{bmatrix} - 1 & - 2\\ 4 & 8\end{bmatrix} +X = \begin{bmatrix} - 5 & - 1\\ 2 & 1\end{bmatrix}[/tex]
[tex] X =
\begin{bmatrix} - 5 & - 1\\ 2 & 1\end{bmatrix}-\begin{bmatrix} - 1 & - 2\\ 4 & 8\end{bmatrix}[/tex]
[tex] X =
\begin{bmatrix} - 5-(-1) & - 1-(-2)\\ 2-4 & 1-8\end{bmatrix}[/tex]
[tex] X =
\begin{bmatrix} - 5+1 & - 1+2\\ 2-4 & 1-8\end{bmatrix}[/tex]
[tex] X =
\begin{bmatrix} - 4 & 1 \\ - 2 & - 7\end{bmatrix}[/tex]
what is 83,74.21 written on expend form
8000 + 300 + 70 + 4 + 0.2 + 0.01
An equilateral triangle with side length 1 cm is shown in the diagram, work out the height of the triangle.
Give your answer rounded to 1 DP.
Answer:
0.9 cm
Step-by-step explanation:
c is the length of the side. a is the altitude. b is the base. a is the vertical bisector if the base, so the base is 0.5 cm.
c² = a² + b²
1² = a² + 0.5²
1² - 0.5² = a²
1 - 0.25 = a²
√0.75 = a
0.8660254 = a
round to 0.9
Help with these questions pleaseee
Answer:
Exponential and exponential
Step-by-step explanation:
Answer:
f) -20 ..exponential
sory i don't know c
gl tho
Alto and Brian both ordered the same size pizzas and Marco's Pizza;
however, they ordered different toppings. Marco's charges an additional
fee for toppings, but all toppings cost the same. Alto got pepperoni,
banana peppers, and black olives on his pizza for a cost of $15.74. Brian
order mushrooms and eggplant of his pizza and paid $14.49. Using this
information, write an equation for the cost of a pizza, C, as a function of
the toppings, t, ordered. *Hint: slope intercept form and you will need the
slope formula
Answer:
Cost of pizza = 1.25x + 11.99
Step-by-step explanation:
Since Toppings cost the same and the pizza orders are of same size :
Alto ordered for 3 Toppings + pizza = 15.74
Brian ordered for 2 toppings + pizza = 14.49
Hence the cost per topping and pizza could be found :
Cost per topping :
15.74 - 14.49 = 1.25
Hence, slope = 1.25
The intercept, c represents the cost of pizza alone :
Cost of pizza + 2 Toppings = 14.49
Cost per topping = 1.25
Cost of pizza = 14.49 - 2(1.25)
Cost of pizza = 14.49 - 2.50 = 11.99
Expressing in slope - intercept form :
y = mx + c
m = slope ; c = intercept
Cost of pizza = 1.25x + 11.99
4x + 3(4x + 7) = 4(7x + 3)
Answer: 1
Step-by-step explanation:4x + 3(4x + 7) = 4(7x + 3) + -3
Reorder the terms:
4x + 3(7 + 4x) = 4(7x + 3) + -3
4x + (7 * 3 + 4x * 3) = 4(7x + 3) + -3
4x + (21 + 12x) = 4(7x + 3) + -3
Reorder the terms:
21 + 4x + 12x = 4(7x + 3) + -3
Combine like terms: 4x + 12x = 16x
21 + 16x = 4(7x + 3) + -3
Reorder the terms:
21 + 16x = 4(3 + 7x) + -3
21 + 16x = (3 * 4 + 7x * 4) + -3
21 + 16x = (12 + 28x) + -3
Reorder the terms:
21 + 16x = 12 + -3 + 28x
Combine like terms: 12 + -3 = 9
21 + 16x = 9 + 28x
Solving
21 + 16x = 9 + 28x
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-28x' to each side of the equation.
21 + 16x + -28x = 9 + 28x + -28x
Combine like terms: 16x + -28x = -12x
21 + -12x = 9 + 28x + -28x
Combine like terms: 28x + -28x = 0
21 + -12x = 9 + 0
21 + -12x = 9
Add '-21' to each side of the equation.
21 + -21 + -12x = 9 + -21
Combine like terms: 21 + -21 = 0
0 + -12x = 9 + -21
-12x = 9 + -21
Combine like terms: 9 + -21 = -12
-12x = -12
Divide each side by -12.
x = 1
Simplifying
x = 1
What is an x-intercept? What is a y-intercept?
Answer:
the X intercept is the horizontal line on the cordintae plane while the Y intercept is the vertical line :)
Step-by-step explanation:
Answer:
x -intercept- the point where the line cuts across the x-axis. the coordinate is always in the form (0, y)
y -intercept- the point where the line cuts across the y-axis. the coordinate is always in the form (x, 0)
List the prime factors of each of these numbers
a) 30
b) 24
c) 72
d) 100
Answer:
30= 2×3×5
24= 2cubed×3
72= 2cubed×3squared
100=2squared×5squared
Answer:
Step-by-step explanation:
a) 30 = 5 * 6 = 5 * 2 * 3
30 = 5 * 2 * 3
b) 24 = 4 * 6 = 2*2 * 2 * 3
24 = 2³ * 3
c) 72 = 8 * 9 = 2 *2 * 2 * 3 * 3
72 = 2³ * 3²
d) 100 = 10 * 10 = 2 * 5 * 2 * 5
100 = 2² * 5²
A relation contains the points (-5, -10), (-2, -4), (-1,-2), (4,8) and (5,10). is this a function?
two complementary angle are in the ratio of 4:11 find the bigger angle
Answer:
bigger angle is 66° ......
1.Solve for x.
x /45 = 3
A) 15
B) 42
C) 135
D) 143
2.Given that the measurement is in centimeters, find the circumference of the circle to the nearest tenth. (Use 3.14 for π)
A) 9.4 cm
B) 18.8 cm
C) 37.7 cm
D) 56.6 cm
3.Evaluate this expression. −5.8 + (−2.5)
A) −3.3
B) −8.3
C) 3.3
D) 8.3
4.An XBOX 360 regularly sells for $399. It is on sale for 20% off. What is the sale price of the XBOX 360?
A) $78.80
B) $300.00
C) $319.20
D) $391.02
5. What is the volume of a cube with a side length of 5 cm?
A) 10 cm3
B) 15 cm3
C) 25 cm3
D) 125 cm3
6.Which equation represents a proportional relationship?
A) y = x /8
B) y = 8/ x
C) y = x/ 8 + 8
D) y = 8 /x + 8
7.Riley is placing the game board shown on his bedroom wall. What area of the wall will the game board cover? Use 3.14 for π and round to the nearest whole square foot.
A) 2 ft2
B) 3 ft2
C) 5 ft2
D) 6 ft2
8.Jennifer has a map of Yellowstone National Park. The scale on this map is 1 cm = 9.8 miles. Jennifer measured some distances on the map. What is the actual distance from Old Faithful to West Thumb?
A) 22.54 miles
B) 24.5 miles
C) 27.44 miles
D) 29.4 miles
9.What is 5 /8 x 4 /5 ?
A) 1/2
B) 1/3
C) 2/9
D) 3/8
Answer like
Answer 1._____________
Answer 2. ____________
Answer 3._____________
Answer 4._____________
Answer 5. ____________
Answer 6. ____________
Answer 7. ____________
Answer 8. _____________
Answer 9. _____________
Answer:
Answer 1. C
Answer 2. There's not enough information. You didn't give us the radius or diameter.
Answer 3. B
Answer 4. A
Answer 5. D
Answer 6. A
Answer 7. We can't see the gameboard. Sorry!
Answer 8. We can't see the map. Sorry!
Answer 9. A
Hope that helps! Sorry for the missings! I'm not sure for Answer 4.
Hope that helps!
Step-by-step explanation:
The value of x for equation x /45 = 3 is 135, value of expression −5.8 + (−2.5) is -8.3, the sale price is $319.20, volume of cube is 125 cubic centimeter, y = x /8 represents a proportional relationship.
What is Expression?An expression is combination of variables, numbers and operators.
1. The given equation is x /45 = 3
Now value of x is 45×3
x=135
3. The expression is −5.8 + (−2.5)
−5.8 −2.5
The value of expression is -8.3
4.To find the sale price after a 20% discount, we need to subtract 20% of the original price from the original price:
20% of $399 = (20/100) x $399 = $79.80
Sale price = $399 - $79.80 = $319.20
Therefore, the sale price is $319.20.
5. The side length of cube is 5 cm
Volume = 5³
=125 cubic centimeter
6. y = 8/ x equation represents a proportional relationship
7. 5 ft² is area of the wall will the game board cover
9. The given expression is 5 /8 x 4 /5
20/40
1/2
Hence, the value of x for equation x /45 = 3 is 135, value of expression −5.8 + (−2.5) is -8.3, the sale price is $319.20, volume of cube is 125 cubic centimeter, y = x /8 represents a proportional relationship.
To learn more on Expressions click:
https://brainly.com/question/14083225
#SPJ3
Mean :Find the mean of each set of data. 1. The table lists the weights of a random sample of 11 tents from an outdoor store. What is the mean weight?
Answer:
The mean is 67
Step-by-step explanation:
Help me guys it's due this morning
Answer:
No
Step-by-step explanation:
Y is not more than 9
-1 over 5 times (-5) plus 8 is 9
14√(a2 - 10) - b = 0
If a > 0 and b = 1 in the equation above, what is the value of a?
(A) √11
(B) √14
(C) 4
(D) 8
The answer is B. √14
Micah pays 54$ for an item originally priced 60$. What percentage of the original price was his discount?
Answer: The percentage of the original price was his discount = 10%
Step-by-step explanation:
Given: original price = $60
Price after discount = $54
Discount = Price after discount - original price
= $ (60-54) = $6
The percentage of the original price was his discount = [tex]\dfrac{Discount}{Original\ price}\times100[/tex]
[tex]=\dfrac{6}{60}\times100\%\\\\=\dfrac{1}{10}\times100\%\\\\=10\%[/tex]
Hence, the percentage of the original price was his discount = 10%
Triangle EFG is shown here. What is the image of point F after a rotation 270°
counterclockwise about the origin?
F(1.4)
G(03.3)
E (1,1)
Answer:
cxv
Step-by-step explanation:
xcv
WILLLLLLLLLLLL MARK BRAINLISTTTTTT
Answer: -38
Step-by-step explanation:
7/22 as a decimal rounded to nearest hundreths
Answer:
0.318= 0.32 hope this helps tell me if I'm wrong
Edit: 0.318. 1 is in the hundredths place so 8 would bump it up to 2 so it would be 0.32
The given fraction in decimal form as 0.32.
The given fraction is 7/22.
How to convert fraction to decimal?The fraction bar separating the “part” and the “whole” represents division. This means that all fractions can be converted into decimals by dividing the numerator by the denominator.
Now, the given fraction can be converted to decimal as follows
7/22 = 0.3181
To the nearest hundredths is 0.3181 ≈ 0.32
Therefore, the given fraction in decimal form as 0.32.
To learn more about the fraction to decimal visit:
https://brainly.com/question/28600610.
#SPJ2
(Brainliest for correct) You have decided to buy a Honda Accord LX, but you are concerned about the value of the car depreciating over time. You search the Internet and obtain the following information. The suggested retail price is $20,025. The depreciation per year is $1,385. What is the value of the car in dollars for 1 year of ownership, and how did you get that answer?
To find the value of the car after 1 year, subtract the amount it depreciates from the value of the car:
20,025 - 1,385 = 18,640
After 1 year the car is valued at $18,640
Answer:
$18640
Step-by-step explanation:
For year 1: Depreciated value is $1385.
We will minus that amount from the actual worth of car i.e. $20,025
So,
= $20,025 - $1385
= $18640
Hope this helps you.
i need help with this can any one help
Answer:
9. 6 cups
10. 66 in
11. 66 ft
12. 1320 ft
Hope that helps!
Step-by-step explanation:
9. 3 pt = 6 c
10. 5 1/2 ft = 66 in
11. 22 yd = 66 ft
12. 1/4 mi = 1320 ft
Hope this helped! :)
Parallel lines L and M are intersected by line N. Answer the following questions based on the information given.
True/False
1. Angles 1 and 3 are vertical angles.
2. The value of angle 7 is 125 degrees.
3. Angles 1 and 6 are alternate interior angles. 4. Angles 3 and 5 are alternate interior angles. 5. Angles 4 and 8 are corresponding angles.
6. The value of angle 5 is 55 degrees.
7. Angles 1 and 7 are alternate exterior angles. 8. Angles 6 and 8 are corresponding angles.
9. Angles 1 and 6 are supplementary angles. 10. Angles 4 and 8 are supplementary angles
Answer:
1=True
2=false
3=False
4=True
5=False
6=False
7=True
8=False
9=true
Step-by-step explanation:
As Parallel lines L and M are intersected by line N, so given questions have following answers True, False, False, True, True, True, True, False, False, False.
What are parallel lines?Parallel lines are coplanar straight lines that do not intersect at any point.
We have,
Parallel lines L and M ,
Transversal line N,
[tex]\angle 2 =125^0[/tex], [tex]\angle 5 =55^0[/tex]
Now,
Using the Parallel lines properties,
Angles [tex]1\ and\ 3[/tex] are vertical angles - True.The value of angle [tex]7\ is\ 125[/tex] degrees - False. Angles [tex]1\ and\ 6[/tex] are alternate interior angles - False.Angles [tex]3\ and\ 5[/tex] are alternate interior angles - True.Angles [tex]4\ and\ 8[/tex] are corresponding angles - True.The value of angle [tex]5\ is\ 55[/tex] degrees - True.Angles [tex]1\ and\ 7[/tex] are alternate exterior angles - True. Angles [tex]6\ and\ 8[/tex] are corresponding angles - False.Angles [tex]1\ and\ 6[/tex] are supplementary angles - False. Angles [tex]4\ and\ 8[/tex] are supplementary angles - False.Hence, we can say that As Parallel lines L and M are intersected by line N, so given questions have following answers True, False, False, True, True, True, True, False, False, False.
To know more about Parallel lines click here
https://brainly.com/question/22511103
#SPJ3
In ΔEFG, the measure of ∠G=90°, FG = 2.3 feet, and EF = 8.9 feet. Find the measure of ∠F to the nearest degree.
Answer:
75
Step-by-step explanation:
its right
Answer:
75 degrees
Step-by-step explanation:
delta math told me
2.
What is the distance between the points (2,0) and (-6, 6) on the standard (x, y) coordinate plane?
F
27
G
2/13
H
8
10
K
2137
Answer:
10
Step-by-step explanation:
Use the distance formula.
[tex] d = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2} [/tex]
We have x1 = 2; y1 = 0; x2 = -6; y2 = 6.
[tex] d = \sqrt{(-6 - 2)^2 + (6 - 0)^2} [/tex]
[tex] d = \sqrt{(-8)^2 + 6^2} [/tex]
[tex] d = \sqrt{64 + 36} [/tex]
[tex] d = \sqrt{100} [/tex]
[tex] d = 10 [/tex]
Answer: 10
⚠⚠ pls helpppp will give brainliest AND 25 points ⚠⚠
✋
The county fair is a popular field trip destination. This year the senior class at High School A and the senior class at High School B both planned trips there. The senior class at High School A rented and filled 13 vans and 2 buses with 211 students. High School B rented and filled 4 vans
and 4 buses with 268 students. Each van and each bus carried the same number of students. Find the number of students in each van and in each bus.
8v + 8b = 240
4v + b = 54
------
Modify:
8v + 8b = 240
8v + 2b = 108
------
Subtract and solve for "b":
6b = 132
b = 22 (# of students in each bus)
-----
Solve for "v":
4v + b = 54
4v + 22 = 54
4v = 32
v = 8 (# of students in each van)
Answer:
hi its been a good minute since we talked i hope ur okay
Step-by-step explanation:
Guided Practice
Determine whether the relation is a function. Explain why or why not.
{(2, 5), (3, –5), (4, 5), (5, –5)}
A.
Yes; no value in the domain corresponds to more than one value of the range.
B.
No; the domain value 5 corresponds to two range values, 2 and 3.
C.
Yes; multiple domain values correspond to the same range value.
Answer:
Ok so it is a function
A. Yes; no value in the domain corresponds to more than one value of the range.
Step-by-step explanation:
Since there is one value of
y
for every value of
x
in
( 2 , 5 ) ,
( 3 , − 5 ) ,
( 4 , 5 ) ,
( 5, -5) , this relation is a function.
The relation is a function.
AREA««« What is the area of the figure? 17. unt: 72 sq units 34 slunba
Answer:
1,444
Step-by-step explanation:
you just multiple 72 by 34
Answer:
lol same person but it's 41,616
Step-by-step explanation:
u muipuly all the numbers bc when u want to find the area u multiply
Please help?
I need to find the measure of LO, NO
Answer:
[tex]LO = 14 \\ NO = 14[/tex]
Step-by-step explanation:
[tex]m + 7 = 2m \\ 2m - m = 7 \\ m = 7 \\ (7 + 7) = LO \\ (2 \times 7) = NO[/tex]
A number is 12 more than the other. Find the numbers if their sum is 48
Answer:
let one number be x and the other be x + 12
sum = 48
x + x + 12 = 48
2x + 12 = 48
2x = 48 - 12
2x = 36
x = 36 by 2
x = 18
therefore x = 18 and x+12= 18+12=30
so the answer is 18 and 30
Have a good day! ^^
Step-by-step explanation:
solve 5kx+6=7kx for x
Please I need an answer ASAP!!!!!!!!!!
Answer:
176
Step-by-step explanation: Teachers correction 119 minus 57
