Answer:
26
Step-by-step explanation:
f(x) = -9x + 8
f(-2)
______________
When we have a function f(x), x can be plugged in with anything, when plugged, the equation the function f(x) is tied too will also have x replaced with the value.
Therefore, if f(x) equals f(-2), -9(-2) + 8
Multiply :
-9(-2) + 8
18 + 8
26
can someone please explain
how to do this
Answer:
93
Step-by-step explanation:
A + B +C = 180
75+51 + C =180
126 +C =180
C = 180-126 = 54
DCB : ACD = 2:1
DCB = 2x
ACD = x
2x+x=54
3x = 54 ; x = 54/3 = 18
DCB = 2x = 2 x 18 = 36
dcb + dbc + bdc = 180
51 + 36 + bdc = 180
87 + bdc = 180 ; bdc = 180 - 87 = 93
I hope im right!!
Answer:
the answer is 93°
Step-by-step explanation:
As you know that in a triangle,
angle1+angle2+angle3 = 180°
hence,
angle ABC + angle BAC + angle DCB + angle ACD ( Angle DCB + angle ACD = angle BCA) = 180°
75°+51°+2x+1x (let the ratio be x) = 180°
126°+3x = 180°
3x = 54°
x = 18°
2x = 36° = angle DCB
In triangle DCB,
51°+36°+angle BCD = 180°
angle BCD = 180°- 87°
Hence, angle BCD = 93°
Show
that
[tex] \sqrt{5} [/tex]
is irrational
Cassidy has a bag of 72 red beads and 90 blue beads. She would
like to use the beads to make bracelets that have the same ratio of
red to blue beads as in the bag.
how many red beads does it have?
If a bracelet has 15 blue beads,
Answer:
90 blue hostia colombia
Micah wants to know the most common style of surfboard used at Breakers Point. He surveys surfers at Breakers Point between 8:00 A.M. and 12 P.M. Which of the following statements is true about Micah’s survey? Select all that apply.
A. Micah will obtain a random sample by talking to as many surfers as possible.
B. The population for the survey is all people who surf at Breakers Point.
C. Micah will not get a representative sample.
D. Micah's sample will be representative because anyone can surf at Breakers Point
Answer: B I think I hope it helps
Step-by-step explanation:
The statements that are true are:
The population for the survey is all people who surf at Breakers Point.Micah will not get a representative sample.What is random sampling?It is a method of selecting a set number of essential items from a given population.
Each item has an equal likelihood of getting chosen.
A. Micah will interview as many surfers as possible to obtain a random sample.
This statement is not always true because Micah may not be able to speak with all of the surfers at Breakers Point during the time frame specified. Also, randomly selecting surfers would result in a more accurate picture of the population.
B. The survey's population consists of all Breakers Point surfers.
This remark is correct, as the demographic of interest at Breakers Point is surfers.
C. Micah will not be able to obtain a representative sample.
This assertion is also correct, as the poll is only done between 8:00 a.m. and 12:00 p.m., which may not be representative of all Breakers Point surfers.
Furthermore, if Micah only polls surfers in a specific place or time period, the sample may be biased.
D. The statement is not always true because not all surfers surf at the same time or location, or have the same level of experience or surfboard preference.
Learn more about random sampling here:
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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:
Molly bought 10 bags of the same dog food. She had a coupon for $5. She spent a total of$65. How much money was each of bags dog food?
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° ......
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! :)
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:
75
25
Simplify fraction to a mixed number
Answer:
75/25= 3 wholes
Step-by-step explanation:
Because 25*3=75 so it would be 3 wholes
what is 83,74.21 written on expend form
8000 + 300 + 70 + 4 + 0.2 + 0.01
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
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
What is the approximate solution to the system of equations graphed below?
A.(7,-2)
B.(-1.3, 1.9)
C.(1.9,-1.3)
D.(1.8, -0.7)
Answer:
a
Step-by-step explanation:
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:
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$20 in the ratio 3:7
i need some help plsss asap
Answer:
a.8
i hope this is correct??!!
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]
A circle has a circumference of 46 meters. What is
the radius of the circle?
May someone please help me out? Just do 1 and I just need steps because I’m unfamiliar with this.
Answer:
x=5.09
Step-by-step explanation:
Always look at what info they give you, here you have angle, opposite, and adjacent. The trig function that uses [tex]\frac{opp}{adj}[/tex] is tangent so tan (27) = [tex]\frac{x}{10}[/tex] so
x = 10 tan (27) so x = 10 (.5095254495) [make sure you are in degree mode] so x has to be 5.09
The same goes for question 10, check what you are given [hint: you will need sin probably]....good luck!
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
Find the average rate of change over the interval (-1, 2] (x=-1 and x=2).
Answer:
The internal rate of change over the interval (-1,2) is 1
Use the greatest common factor and the distributive property to write equivalent expressions in factored form.
20g + 24h =
Answer:
4(5g+6h)
Step-by-step explanation:
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
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
Factor out a negative common factor:
12 – 32x
Please help!!!
What are the coordinates of the x-intercept in the graph below?
Answer:
-2
Step-by-step explanation:
Kiera randomly selected 35% of the eighth grade students in her school and asked them their favorite food in the cafeteria. Of the students surveyed, 60 chose chicken nuggets as their favorite food. Based on her school who would choose chicken nuggets as their favorite food served in the cafeteria?
Answer:
171
Step-by-step explanation:
Percentage randomly selected = 35%
Number of surveyed who chose chicken nugget = 60
To obtain the number who chose chicken nugget based on her school :
number who chose chicken nugget / Percentage randomly surveyed
60 ÷ 35%
60 ÷ 0.35
= 171.42
Approximately 171 students
