Answer:
Solve the equation:
2x² − 4x + 16 = 0x² - 2x + 8 = 0x² - 2x + 1 + 7 = 0(x - 1)² + 7 = 0(x - 1)² = -7There is no solution as the square of the number can't be negative
----------------------------
Note if the equation was 2x² - 4x - 16 = 0, the solution would be:
2x² - 4x - 16 = 0x² - 2x - 8 = 0x² - 2x + 1 = 9(x - 1)² = 3²x - 1 = ± 3x = -2, x = 4In this case x = -2 is the correct choice
Answer:
x = -2
Step-by-step explanation:
:::::;;;;;::::::
Consider the graph of carbon dioxide emissions by various fossil fuels in the United States.
In 2016, which fossil fuel released the least amount of carbon dioxide into the air?
natural gas
oil
coal
Answer:
The correct option is coal! <3
Step-by-step explanation:
Ryan has a box of markers. It has 45 markers that are some shade of blue. The blue markers represent 25% of the total markers in the box. What is the total number of markers in the box?
10. Sonia paid $ 19.55 for 3.4 pounds of salmon. What is the price per pound of the salmon?
use distributive property
-9(-m+4)
Answer: -9m+-36
Step-by-step explanation:
Answer:
9m-36
Step-by-step explanation:
-9times -m = 9m
-9 times 4 = -36
9m-36
You told your friend that you could eat 5/8 of a large pizza. If you only ate 1/2 of what you said you could eat, what fraction of a large pizza did you eat?
Answer:
5/16
Step-by-step explanation:
Given that:
Fraction of claim = 5/8
Amount actually eaten = 1/2 of claim
Amount actually eaten = 1/2 * 5/8 = 5/16
Fraction of large pizza actually eaten is 5 /16
Hence, he ate, 5/16 of large pizza
Answer:
Step-by-step explanation:
5/6
Side of the triangle below has been extended to form an exterior angle of 135 find the value of X
Answer:
x = 45
Step-by-step explanation:
x + 135 = 180 {Linear pair}
x = 180 - 135 {Subtract 135 from both sides}
x = 45
Julie has a ripe that is 48 feet long. She cuts three pieces of that are each 6 feet long. How many 10 foot pieces can she cut from the rope that is left over?
Answer:
3
Step-by-step explanation:
6*3=18
48-18=30
30/10=3
3
The average grade Jared received on 4 tests was 94. If he drops his lowest test grade of 85, what will his new average be?
A.72.75
B.76
C.89.5
D.97
Pls help TT
Answer:
total points on the 4 tests- 94x4= 376
376- 85= 291
291/3= D. 97
Answer:
D. 97
Step-by-step explanation:
x = sum of 4 test grades Jared received
[tex]\frac{x}{4} = 94[/tex]
x = 376
If he drops lowest test grade of 85, then subtract 85 from Jared's sum of all test grades:
x - 85 --> 376 - 85
= 291
Now that one of his test grades are not considered, this means there are only 3 test grades to consider.
291 must be divided by 3 to get the average:
[tex]\frac{291}{3}[/tex] = 97
The answer is D) 97
the sum 9 times a number and 2 is 7
Answer:
5/9
here's the solution of your question
let the required number be. X
according to question
9x + 2 = 7
9x = 7 - 2
x = 5/9
hope it helps
YALL, I NEED HELP PLEASE HELP ME!
Answer:
16/r
Step-by-step explanation:
16 is how many people there is in total, r is how they are being divided :)
HELP ASAP PLSSS 10 POINTS
Answer:
true both
Step-by-step explanation:
i did math
Answer:
False
True
Step-by-step explanation:
because comparing one side it's 2:5
If 60% of the students prefer waffles to pancakes. If there are 5 students in the class, how many students prefer waffles?
Answer:
Hm mmm
Step-by-step explanation:
The answer is 3.
Step-by-step explanation:
dnwkxmexk
Find the solution to the following system using substitution or elimination:
y = 3x + 2
y=-2x - 8
A. (-2,-4)
O B. (-ş; – 34)
O C. (-9,-)
D. (1, -6)
Answer:
A. (-2,-4)
x = -2,
y = -4
thats the only way ik how to explain but its the correct answer
The drama club is selling tickets to their play to raise money for the show's expenses. Each student ticket sells for $5.50 and each adult ticket sells for $8.50. The auditorium can hold at most 110 people. The drama club must make no less than $680 from ticket sales to cover the show's costs. Also, they can sell no more than 70 adult tickets. If xx represents the number of student tickets sold and yy represents the number of adult tickets sold, write and solve a system of inequalities graphically and determine one possible solution.
Answer:
74 or 73
Step-by-step explanation:
We are going to assume that the show is sold out. If 66 student tickets were sold, we only have 74 adult tickets to sell. Based on that information, we then have to use an inequality to find out if the number of adult tickets we have to sell to meet our money requirements is more than the amount of seating we have left after 66 seats were taken by students. Our inequality looks like this:
5.50(66) + 7.50(a) ≥ 910 and
363 + 7.50a ≥ 910 and
7.50a ≥ 547 so
a ≥ 73
In order to meet our money requirement, we have to sell 73 adult tickets. Since we have 74 seats left, we are good.
Jasmine has 334 cups of rice. Each samosa she makes requires 512 of a cup of rice. How many samosas can Jasmin make?
Answer:
9
Step-by-step explanation:
Answer:
9
Step-by-step explanation:
3 3/4 divided by 5/12 equals 9
hope this helps :)
Three friends went to the fair. Each paid $5.00 to enter and went on r rides, paying $0.90 per person for each ride. Which expression shows how many dollars they paid in all? A. 3(0.9) +5r
B. 3(5 + 0.9r)
C. (5) + 0.9r
D.3(5) + 3(0.9)
2.Susan and Tom want to know the combined amount of money they earned last week. They both earned $9 per hour, but Susan also earned a $45 bonus. Susan added her earnings to Tom's earnings to write the expression (9S + 45) + 9T, where S is the number of hours she worked, and Tis the number of hours Tom worked. Tom added their combined hourly wages to Susan's bonus to write the expression 9(S + T) + 45. Which of the following statements is true?
A.They are both correct, and their expressions are equivalent.
B.They are both correct, and their expressions are not equivalent.
C.Only one of them is correct, and their expressions are equivalent.
D Only one of them is correct, and their expressions are not equivalent.
3. Amanda and Trinity each wrote an expression, but only Amanda's expression is equivalent to 2x + 5. What could be Trinity's expression?
A.2(x+3)-1
B.3x-(x-5)
C.5(x+1)-3x
D.5x-3(x-1)
Answer:
1. B, 2. A, 3. DStep-by-step explanation:
Question 1One off fee: $5Each ride: $0.90Number of rides: rTotal payment:
3(5 + 0.9r)Correct choice is B
Question 2Since
9S + 45 + 9T = 9S + 9T + 45 = 9(S + T) + 45, the expressions are equivalent and therefore both Susan and Tom are correctThe true statement is A
Question 3Let's compare the expressions with Amanda's expression
A. 2(x + 3) - 1 = 2x + 6 - 1 = 2x + 5, equivalentB. 3x - (x - 5) = 3x - x + 5 = 2x + 5, equivalentC. 5(x + 1) - 3x = 5x + 5 - 3x = 2x + 5, equivalentD. 5x - 3(x - 1) = 5x - 3x + 3 = 2x + 3, not equivalent so this is Trinity's expressionFind the first five terms of the sequence defined below, where n represents the position of a term in the sequence. Start with n=1. 10n+10
Answer:
20,30,40,50,60
Step-by-step explanation:
The sequence is given by the relation as follows :
[tex]a_n=10n+10[/tex]
First term, n = 1
[tex]a_1=10(1)+10=20[/tex]
Second term, n = 2
[tex]a_2=10(2)+10=30[/tex]
Third term, n =3
[tex]a_3=10(3)+10=40[/tex]
Fourth term, n = 4
[tex]a_4=10(4)+10=50[/tex]
Fifth term, n = 5
[tex]a_5=10(5)+10=60[/tex]
So, the first five terms of the sequence are 20,30,40,50,60
If 5 pounds of beans cost $4, then how much does 50 pounds of beans cost?
Answer:
50 pounds of beans costs $40
Please answer, im in a hurry
Answer:
Q(4,-8) —> Q'(4,6)
R(6,-8) —> R'(6,6)
S(6,-1) —> S'(6,-1)
T(4,-1) —> T'(4,-1)
Hope this helps!
find the measure of angle A
Steven determined that this data set is modeled well by y=-3/4x+8
which statement is true about the slope of the model
a. for every 3- unit increase in x, y increase by 4 units
b. for every 4- unit increase inx,in, increases by 3 units
c. for every 3- unit decrease in x,y increase by 4 units
d. for every 4- units decrease in x,y increase by 3 units
Answer:
Should be C
Step-by-step explanation:
someone please help me I’m going to cry
Welp ig ur gonna cry bc i SUCK at math xx
Jo works in a cafe she sells cups of tea and cups of coffee in the ratio 1:3 on Monday jo sold a total of 244 cups of coffee.
Jo thinks she must have sold more than 200 cups of coffee. Is jo correct?
Answer:
No, the thought is wrong
Step-by-step explanation:
Here, we want to check if Jo is correct
The ratio we have is tea cups to coffee cups of ratio 1:3
Now, there are 244 cups of coffee
Now let’s say the total number of cups is x
For the ratio to be correct
Then;
3/4 * x = 244
x = (244*4)/3
x = 325
Now let’s subtract the number of cups
That will be;
325 - 244 = 81
This means the number of cups she thought was incorrect
pls I need help please :D its math and you'll get 30 points
Its a picture
Answer:
5,750
Step-by-step explanation:
if he has 10 of each then you can multiply each bag by 10 and then multiply the amount of bags to the amount the coin is worth
Your firm has net income of $329 on total sales of $1,340. Costs are $740 and depreciation is $130. The tax rate is 30 percent. The firm does not have interest expenses. What is the operating cash flow?
Answer:
Net operating cash flow= $459
Step-by-step explanation:
Giving the following information:
Your firm has net income of $329 on total sales of $1,340. Costs are $740 and depreciation is $130. The tax rate is 30 percent. T
To calculate the operating cash flow, we need to use the following structure:
Sales= 1,340
Costs= (740)
Gross income= 600
Depreciation= (130)
EBIT= 470
Tax= (470*0.3)= (141)
Depreciation= 130
Net operating cash flow= $459
how can u tell if something is a function
Answer:
To know if it is a function see if there are two of the same x-intercept( which makes a vertical line). If there is,then it is not a function.
Answer:
How you can tell
Step-by-step explanation:
A function assigns exactly one output to each input: x/input y/output
How they work: X can not repeat but Y can.
Lets see your problem, there are no inputs repeating and the outputs are fine.
That is a function!
If a scuba diver swam from the surface at −1212 feet per minute, for 412 minutes, what would be the diver’s change in elevation?
Answer:
-1212 feet/min * 412 min = -499314 feet
Step-by-step explanation:
if you have a speed, or in this case velocity since the measurement has a definite direction, and time you can multiply them together to get the distance. Some easy examples, 10 feet per second for 1 second is 10 feet, hopefully that logically makes sense as well. i you are going 10 feet in 1 second, then after 1 second you went 10 feet. after 2 seconds it's 20 seconds and so on
Here we have -1212 feet per minute for 412 minutes. just to establish things, 1 minute would be -1212 feet, here the negative means below the surface, sometimes measurements will have that. Anyway, 2 minutes would get -2424, and so on. So it should make sense to multiply them.
-1212 * 412 = -499314
With units, you also have to pay attention to what might cancel out. You treat different units like variables. so -1212feet per minute looks like -1212 feet/min where feet and min are basically variables. Similarly 412 minutes is 412 min. So if you picture multiplying these, you get -1212 feet/min * 412 min. In this scenario the mins cancel each other out, since everything s being multiplied. so like if you had x/y * y you would just get x, or 2/3 * 3 gets just 2. So this is another way to know what to multiply by.
feet/min has min in the denominator and we want feet, so we need to multiply by something that just has min as its units. Anyway, that let's you know it's -499314 feet
The drivers change in elevation is 499,344 feet in 412 minutes
Given:
Distance travelled per minute = −1212 feet
Time travelled = 412 minutes
Change in elevation = Distance travelled per minute × Time travelled
= −1212 feet per minute × 412 minutes
= 499,344 feet
Therefore, the drivers change in elevation is 499,344 feet in 412 minutes
Read more:
https://brainly.com/question/17865165
A triangular-shaped sign has a base of 15 ft, and a height of 8 ft. What is the area of the sign?
Answer:
60ft²
Step-by-step explanation:
Area of a triangle = 1/2×base×height
=1/2×15×8
=60
A triangle has sides with lengths 8, 15, and 17.
Approximate the acute angles in this triangle.
Pythagoras is the sum of the square of two sides is equal to the square of the longest side. Then the acute angle of the given triangle is 28.07 degrees.
What is a right-angle triangle?It is a type of triangle in which one angle is 90 degrees and it follows the Pythagoras theorem and we can use the trigonometry function.
A triangle has sides with lengths 8, 15, and 17.
By Pythagoras theorem, we have
H² = P² + B²
17² = 8² + 15²
289 = 64 + 225
289 = 289
The dimension of the triangle satisfies the Pythagoras theorem. Hence the triangle is a right-angle triangle.
Then the acute angle will be
[tex]\rm \theta =Sin ^{-1} \dfrac{8}{17}\\\\\theta = 28.07^o[/tex]
Thus, the acute angle of the given triangle is 28.07 degrees.
More about the right-angle triangle link is given below.
https://brainly.com/question/3770177
Apples are $2.49/pound. You need 2.5 pounds to make apple crisp. How much will you spend on apple in total? Show your work for full credit