Answer:
C. 33.3%
Step-by-step explanation:
Estimated time = 40 minutes
Actual time = 30 minutes
Percent of error = (estimated time - actual time) / actual time × 100
= (40 minutes - 30 minutes) / 30 minutes × 100
= 10 minutes / 30 minutes × 100
= 0.3333 × 100
= 33.3%
Percent of error = 33.3%
C. 33.3%
can someone help me please
Answer:
its c
Step-by-step explanation:
when you multiply you get the example shown
Please help me need ASAP
(3) y= 5x+ 13
you have to do the rise (ryse - with a y because it is the y value) over the run to get your slope and then subtract your slope from 18 to get 13.
30 points 1
Mei wants to solve the inequality --W < 12. How can she isolate the variable?
2
• Multiply both sides by -2 and reverse the inequality symbol.
• Multiply both sides by -2 and do not reverse the inequality symbol.
*) Divide both sides by 12 and reverse the inequality symbol.
) Divide both sides by 12 and do not reverse the inequality symbol.
Answer:
Multiply both sides by -2 and reverse the inequality symbol.
Step-by-step explanation:
To isolate w, multiply both sides by the reverse of -1/2 (because -1/2*2=1 ), which is -2
When multiplying or dividing by negatives, you must reverse the inequality symbol as well.
To isolate the variable, you multiply both sides by -2 and reverse the inequality symbol.
Isolating variables in inequalityIsolation of variables means making the variable the subject of the formula from the given expression.
Given the inequality expression -1/2 w < 12
To make w the subject of the formula, we will have to multiply both sides by -2 to have;
-1/2 w * -2 > 12 * -2
w > -24
Hence to isolate the variable, you multiply both sides by -2 and reverse the inequality symbol.
Learn more on inequality here: https://brainly.com/question/11613554
help please fast!!!!!!!1
Answer:b
Step-by-step explanation: i thinks its b
(08.05 MC)
The quadratic functions f(x) and g(x) are described as follows:
f(x) = -8x? +7
g(x)
0
0
1
2
2
6
3
2
4
0
Which of the following statements best compares the maximum value of the two functions?
The maximum value is the same for both functions.
Of(x) has a greater maximum value than g(x).
O g(x) has a greater maximum value than f(x).
The maximum values cannot be determined.
Answer:
x=67
Step-by-step explanation:
The correct statement is,
(B) f(x) has a greater maximum value than g(x).
What is mean by Function?A relation between a set of inputs having one output each is called a function. and an expression, rule, or law that defines a relationship between one variable (the independent variable) and another variable (the dependent variable).
Given that;
Function f (x) is,
f (x) = - 8x² + 7
Now, First, we determine the maximum point of f(x).
f(x) is at maximum at the point of symmetry, i.e. where x = - b/a
Here, a = -8, b = 0
Hence, x = - 0 / - 8 = 0
So, We get;
f (0) = - 8 x 0 + 7 = 7
Thus,
The maximum point of f(x) is (0,7)
And, The maximum point of g(x) is (2,6)
Therefore, f(x) has a greater maximum value than g(x).
Hence3, The correct option is B.
Learn more about the function visit:
https://brainly.com/question/11624077
#SPJ7
what is the solution of the exponential equation? [tex]9^{x} =729[/tex] FULL CALCULATIONS PLEASE.
Answer:
9^x=9^3
divide by 9
x=3
Step-by-step explanation:
and that's why
Answer:
3
Step-by-step explanation:
i gave u the rule in the other post but if you need it again leave a commetn
[tex]9^x=729\\x=log_9729\\log_ba=\frac{log(a)}{log(b)} \\log_9729=\frac{log(729)}{log(9)}=3\\x=3[/tex]
Given three side lengths, how many triangles can be formed?
infinitely many
3
1
2
Answer:
explanation below
Step-by-step explanation:
if sum of any 2 sides length is greater than the third side and not take rotation transformation into account, only 1 triangle can be formed.
Answer:
1 TriangleStep-by-step explanation:
ODYSSEY
Abigail has $30.00 to buy groceries. She needs to buy some apples, some bananas, and 3 pounds of potatoes. Fuji apples are $1.79 a pound, bananas are $0.36 each, and potatoes are $2.99 for a 3 lb. bag. If a represents the number of pounds of apples Abigail buys and b represents the number of bananas she buys, which expression represents the amount of change she receives after her purchases?
30.00 – a – b
1.79a + 0.36b + 2.99
30.00 – (1.79a + 0.36b + 2.99)
30.00 + (1.79a + 0.36b + 2.99)
Answer:
30.00 – (1.79a + 0.36b + 2.99)
Step-by-step explanation:
you need to rest the amount of money pay.
You cut a candy bar into two equal pieces, and eat one. Your friend cuts his candy bar into four equal pieces, and eats two pieces. Who ate more candy?
Answer: you did
Step-by-step explanation: your friend ate 1/4 of the candy bar and you ate 1/2
Yoyoyoyoyoyo can anyone help me wit this.
Answer and Step-by-step explanation:
First, we find the area of one area of a face on the cube.
6.5 × 6.5 = 42.25
Now, we times 42.25 by 6, since there are 6 faces on a cube.
42.65 × 6 = 253.5
The answer is 253.5
#teamtrees #WAP (Water And Plant)
b has 2 apples and c has 2/3 apples how many apples dose c have
Answer:
how am i supposed to know
Step-by-step explanation:
Answer:
as many as he wants?
Step-by-step explanation:
What are we looking for in the question?
pls help wil give brainliest for full answer
Answer:
1. angle m=angle L
2.MR=RL
3.ang;e O=angle P
Triangle MOR= triangle LPR
ASA
4. angle M= angle D
5. AM=RD
6. MC=DN
Triangle AMC= RDN
by SSA
Step-by-step explanation:
Answer:
1. angle m=angle L
2.MR=RL
3.ang;e O=angle P
Triangle MOR= triangle LPR
ASA
4. angle M= angle D
5. AM=RD
6. MC=DN
Triangle AMC= RDN
by SSA
In ΔFGH, h = 440 inches, f = 990 inches and ∠G=164°. Find the length of g, to the nearest inch.
Answer:
1418
Step-by-step explanation:
g= 440+990-2(440)(990) cos 164
g=193600+980100-2
g=193600+980100+837451.1895
g= 2011151.1895 Square root and round
Please help i need it fast
Show how you got your answer too please
Answer:
60.1 feet
Step-by-step explanation:
x= length of ladder
48/sin53 = x/sin90
x=48*sin90/sin53
x=60.1
Write the place of 3 in the given number.
812.536
Answer:
The place of the 3 is HUNDRETH so it would be said as three hundreths
Step-by-step explanation:
Simplify the expression using the distributive property:
-4 (5x – 10)
To use the distributive property, we will multiply each term inside the parenthesis by the term outside of the parenthesis.
-4 * 5x + -10 * -4
-20x + 40
Hope this helps!! :)
Answer:
the result using the distributibe is: -20x +40
The height of Niagara Falls is 56,000 centimeters. How many kilometers high is Niagara Falls?
Answer:
If I'm not wrong it's 0.56 kilometers
I had to put two screenshot because it would screenshot the whole question but plz help
Answer:
i think its D dont fullly take my word tho
Step-by-step explanation:
The width of a rectangle is x. Its length is 3x. How long is the diagonal of the rectangle? Express your answer in simplified radical form.
Answer:
The length of the diagonal is x√10
Step-by-step explanation:
Here, we want to find the length of the diagonal
The diagonal will represent the hypotenuse of a triangle formed with the width and length of the triangle being the measure of the other sides
Mathematically, we then apply Pythagoras’ theorem to get this
we have this as that the square of the diagonal equals the sum of the squares of the two other sides
d^2 = x^2 + (3x)^2
d^2 = x^2 + 9x^2
d^2 = 10x^2
d = √(10x^2)
d = x√10
How many solutions does the equations 2m + 4 (m-3) = 7m - 4 have?
Answer:
One solution
Step-by-step explanation:
since the graph formed by them has interesting lines, it will just have one solution
Please Graph
y > 3x - 6
y < 3x + 2
Answer:
The graph is under a graphing calculator under geogebra.com
PLEASE HELP ME I WILL DO ANYTHING PLEASE I BEG OF YOU I DON'T KNOW HOW TO DO IT :(
Simplify the expression 4x3+4xX
I really need help
1
Javier solved the equation 32=2(k+4)32=2(k+4). He made a mistake in his reasoning. What is his mistake and what should he have done differently?
Answer: I am pretty sure the mistake would be where he put the variable k.
Step-by-step explanation:
You know the variable equals 8 because 2x8=32. You can change the equation to 2(32+2) Therefore, the variable diesnt equal 2, so 32=2(k+4) doesnt work. Hope this helps!!
Find the measure of angle 1
Answer:
112 Degrees
Step-by-step explanation:
46+90=136
360-136=224
224/2=112
112 Degrees
Answer:
122
Step-by-step explanation:
46 + 90 = 136
360 - 136 = 224
224 ÷ 2 = 122
The Skateboard club has 2 different colors of skateboards blue and red. Can you find the number of skateboards of each color, if the total number of skateboards is 15, and their product is 44?
Answer:
The number of skateboards of each color is 11 and 4
Step-by-step explanation:
Let x represent blue skateboards and
y represent red skateboards.
From the question, the total number of skateboards is 15, that is,
x + y = 15 ...... (1)
and their product is 44, that is,
xy = 44 ...... (2)
From equation (1),
x + y = 15
We can write that
x = 15 - y ...... (3)
Substitute this into equation (2)
xy = 44
(15-y)y = 44
15y -y² = 44
Then,
y² - 15y + 44 = 0
Solve quadratically
y² -4y -11y + 44 = 0
y(y-4) -11(y-4) = 0
(y-11)(y-4) = 0
y-11 = 0 OR y-4 = 0
y = 11 OR y = 4
Put the values of y into equation (3) for x
x = 15 - y
When y = 11
x = 15 - 11
x = 4
and when y = 4
x = 15 -4
x = 11
(4,11) and (11,4)
It is either 4 blue and 11 red skateboards OR 11 blue and 4 red skateboards.
Hence, the number of skateboards of each color is 11 and 4.
PLEASE HELP ME QUICK PLEASE!
I think the answer is option 4
YOOOOOOOo i need some help with the problem in the photo below 0-0
Answer: 4
Step-by-step explanation:
2+2 =4
I.E If I have 2 apples and my friend has 2 apples, we would have 4 in total.
Answer:
I think its 4 but I mean that's a hard one
Step-by-step explanation:
goldfish plus goldfish
=2 goldfish
Question 7
Review
1) Listen
A new bagel store opened. The first day 15 customers entered the store. The number of
customers that enter the store triples each day after. Which function represents f(d), the
number of customers that enter on the d day?
1.
f(d) = 3(15)
2.
f(d) = 3d + 15
3
f(d) = 150 + 3
f(d) = 15(3)
Submit Answer
Answer:
[tex]f(d) = 15 + 3d[/tex]
Step-by-step explanation:
Given
[tex]a = 15[/tex] --- day 1
[tex]Rate = 3[/tex] -- i.e. triples daily
Required
Determine the function f(d)
The number of customers on a particular day is:
Customers = Day 1 + Rate * Number of days
Represent as a function:
[tex]f(d) = a + Rate* d[/tex]
Where d is the number of days.
So, we have:
[tex]f(d) = 15 + 3* d[/tex]
[tex]f(d) = 15 + 3d[/tex]
Tyler's brother works in a shoe store.
1. Tyler's brother earns a commission. He makes 2.5% of the amount he sells. Last week, he sold $700 worth of shoes. How
much was his commission?
2. The store bought a pair of shoes for $25, and sold it for $45. What percentage was the markup?
3. Tyler's brother earns $14 per hour. The store offers him a raise-a 15% increase per hour. After the raise, how much will
Tyler's brother make per hour?
Answer:
1. $17.5
3. $16.1
Step-by-step explanation:
1. $700x1.025=717.5
717.5-700=17.5
3. $14x1.15=16.1
Which of the following numbers are factors of 16 and 20?
Answer:
The set of factors of 20 is {1, 2, 4, 5, 10, 20} and the set of factors of 16 is {1, 2, 4, 8, 16}. {1, 2, 4, 5, 10, 20} ∩ {1, 2, 4, 8, 16} = {1, 2, 4} which has greatest value 4. So, GCF(20, 16) = 4.
Step-by-step explanation:
Answer:
The factors of 20 is 1, 2, 4, 5, 10, 20
The factors of 16 is 1, 2, 4, 8, 16
Step-by-step explanation: