Answer:
B. y = 5 + 4x
Step-by-step explanation:
x represents the number of games played so its y = 5 + 4x because bowling costs $4 per game
50 points please help
Answer:
What are in the boxes?
Step-by-step explanation:
Can you show the text in the choose box please?
There are 30 total apples of red and 6 total apples of yellow what is the percentage of yellow apples of
Answer:
20%
Step-by-step explanation:
30:6=5
yellow apples - 1/5 of 30
20x5=100
20%/30=6
Find the total surface area of this triangular prism.
17 cm
8 cm
2 cm
15 cm
Answer:
200cm²
Step-by-step explanation:
Total surface area of the prism = bh + L(s1+s2+s3)
b is the base of the triangle = 15cm
h is the height of the triangle = 8cm
Perimeter of the triangular base = s1 + s2 + s3 = 8+17+15
Perimeter of the triangular base = 40cm
L is the lateral height = 2cm
Substitute the given values into the formula;
Total surface area of the prism = 15(8) + 2(40)
Total surface area of the prism = 120+80
Total surface area of the prism = 200cm²
Hence the total surface area of the prism is 200cm²
The total cost for a chair, a desk, and a lamp is $562. The desk costs four times as much as the lamp and the chair costs $23 less than the desk. Find the cost of each item.
16 Use the Empirical Rule. (Do not use technology. Technology will give a slightly different answer.)
Draw a sketch of the normal distribution and label the mean and 1, 2, and 3 standard devitons above and
below the mean with computed values.
Assume that the weight of 1-year-old girls in the USA is normally distributed with Mean = 9.5 kg, Standard
Deviation = 1.1 kg.
(a) 68% of the data is between which 2 values? 8.4 oro kg -- 10.0 kg
(b) 95% of the data is between which 2 values? 7.3 kg - 11. oo kg
(c) What percentage of the data is less than 8.4 kg?
(d) What percentage of the data is between 7.3 kg and 11.7 kg?
(w) What percentage of the data is more than 12.8 kg?
Answer:
a)8.4kg to 10.6kg
b)7.3 kg to 11.7kg
c)16%
d) 95%
e) 0.15%
Step-by-step explanation:
The empirical rule formula states that:
68% of data falls within 1 standard deviation from the mean - that means between μ - σ and μ + σ .
95% of data falls within 2 standard deviations from the mean - between μ – 2σ and μ + 2σ .
99.7% of data falls within 3 standard deviations from the mean - between μ - 3σ and μ + 3σ
From the question,
Mean(μ) = 9.5 kg,
Standard Deviation (σ) = 1.1 kg.
a) 68% of the data is between which 2 values?
68% of data falls within 1 standard deviation from the mean - that means between μ - σ and μ + σ .
μ - σ
= 9.5kg - 1.1kg
= 8.4kg
μ + σ
= 9.5kg + 1.1kg
= 10.6kg
Therefore, 68% of the data is between 8.4kg to 10.6kg
(b) 95% of the data is between which 2 values?
95% of data falls within 2 standard deviations from the mean - between μ – 2σ and μ + 2σ .
μ - 2σ
9.5kg - 2(1.1)kg
9.5kg - 2.2 kg
= 7.3kg
μ + 2σ
9.5kg + 2(1.1)kg
9.5kg + 2.2 kg
= 11.7kg
Therefore, 95% of the data is between 7.3 kg to 11.7kg
(c) What percentage of the data is less than 8.4 kg?
We need to find how many standard deviations from the mean 8.4kg is, in order to know the percentage it falls under
μ - xσ = 8.4kg
= 9.5kg - 1.1x = 8.4kg
9.5 - 8.4 = 1.1x
1.1 = 1.1x
x = 1.1/1.1
x = 1
Hence, the percentage it falls under according to Empirical rule = 68%
The percentage of the data that is less than 8.4 kg is calculated as:
100 - 68/2 = 32/2 = 16%
(d) What percentage of the data is between 7.3 kg and 11.7 kg?
We have to find the Standard deviation that they fall under
For 7.3 kg
μ - xσ = 7.3kg
= 9.5kg - 1.1x = 7.3kg
9.5 - 7.3 = 1.1x
2.2 = 1.1x
x = 2.2/1.1
x = 2
μ + xσ = 11.7kg
= 9.5kg + 1.1x = 11.7kg
11.7 - 9.5 = 1.1x
2.2 = 1.1x
x = 2.2/1.1
x = 2
Therefore, based on the calculation above and the empirical formula rule, the percentage of the data is between 7.3 kg and 11.7 kg is 95%
(e) What percentage of the data is more than 12.8 kg?
μ + xσ = 12.8kg
9.5kg + 1.1x = 12.8kg
= 12.8- 9.5 = 1.1x
3.3 = 1.1x
3.3 = 1.1x
x = 3.3/1.1
x = 3
Hence, the percentage it falls under according to Empirical rule = 99.7%
The percentage of the data that is more than 12.8kg is calculated as:
100 - 99.7/2 = 0.3/2 = 0.15%
Can someone please answer this with step please.
Answer:
It is the sedond one
Step-by-step explanation:
7n, 4n because they have the same variable, n.
because the three sides are congruent, what foes that make each angle measure according to the equilateral triangle theorem.
a 30 degrees
b 90 degrees
c 180 degrees
d 60 degrees
Answer:
60degrees
Step-by-step explanation:
Congruent means equal and equilateral triangle also means a triangle which has three sides equal.
So 60 degrees is the sides for each angle since when they are added they all add up to 180°
<AC=60°
<CB=60°
<AB=60°
60+60+60=180°
∆ABC=180°
Kyle can write a 300-word essay in an hour. At that rate, if he writes an essay in 10 minutes, how many words will it contain?
Answer: 50 Words
Step-by-step explanation: We know Kyle can write a 300-word essay in an hour or 1 hour. We want to know how many words Kyle would have in his essay if he wrote one in 10 minutes.
First, find how many words Kyle can write per minute. Simply do this by dividing 300 by 60, since there are 60 minutes in a hour.
300/60 = 5. So, Kyle can write 5 words per minute.
Now, simply multiply 5 by 10 to find how many words Kyle would write in 10 minutes.
5 x 10 = 50. So, Kyle can write 50 words in his essay if he writes for 10 minutes.
HELP DUE IN 15 MIN
x =
Answer:
x=7
Step-by-step explanation:
write -2+16x+9x+7=180
then add all like terms (-2+7=5) and (16x+9x=25x)
5+25x=180
-5. -5
25x=175
/25. /25
x=7
Answer:
180=-2+16x+9x+7
180=25x+5
-5. -5
175=25x
175/25=25x/25
7= x
Step-by-step explanation:
Adam bought a PS5 for $500 and is selling it to his friend at a 15%
markup. How much does his friend pay Adam for the PS5?
Answer:
575$
Adam being the scammer he is, does it at a 15% increased price. We will multiply.
500 x 1.15 = 575.
We get the 1.15 from 15%
Nixon estimates it will take him 5 hours to finish an art project.It actually takes him 320% of the time estimated.How many hours did it take him to finish the project?
Answer:
16hours
Step-by-step explanation:
Amount of hours Nixon took = 5hours
If it takes 320 % of his time, then he took him 320% of 5hrs to finish
This is express as shown
320% of 5
= 320/100 ×5
= 320/20
= 16
Hence it took him 16 hours
Answer:
Step-by-step explanation:
320/100 = 3.2
3.2 x 5
=16
Jane and Chris sell candles to earn money. Jane spent $20 to create her candles and sells candles for $3 each. Chris spent $40 to create his candles and sells candles for $5 each. How many candles will Jane and Chris have to sell in order to earn the same profit?
Answer:
10 candlesStep-by-step explanation:
Jane's caldles:
Cost = $20, Price = $3 per candleChris's candles:
Cost = $40, Price = $5 per candleProfit, if equal per x candles is:
3x - 20 = 5x - 405x - 3x = 40 - 202x = 20x = 10Each will have profit of $10 if 10 candles sell
Please help!!
Find the rate of change
Answer:
Rate of change is 2
How I got the answer:
rate of change: [tex]\frac{y2-y1}{x2-x1}[/tex]
Lets use :
(1,3)
(2,5)
[tex]\frac{5-3}{2-1} =\frac{2}{1} =2[/tex]
Brainly plz :)
factorize 2x² - 5x+ 2x - 5
Answer:
(x+1)(2x-5)
Step-by-step explanation:
Answer:
(x+1)(2x-5)
Step-by-step explanation:
Please help me! Only answer if you know it and I’ll mark you brainiest
Answer:
BD = 13x +27Step-by-step explanation:
according to the rectangle theory
the diagonals of a rectangle bisect each other.thus,
AC = BDwe can write AC as AE+ CE
11x -18 + 2x+45 = BD
13x + 27 = BDhope it helps:)
help me please i will mark brainliest if correct
Answer:
7 x 2 + 31
Step-by-step explanation:
Equals to the bottom line answer is 7
John decided to look at new and used cars. John found a used car for $6000. A new car is $18000, so what percent of the price of a new car does John pay for a used car? Round your answer to the nearest tenth if necessary.
Answer:
The answer is 3%.
Step-by-step explanation:
6,000 x 3 = 18,000.
18,000 / 6,000 = 3.
find the two missing sides what is x and y
Answer:
y=6 , X = 8.48 which is 6 root 2
Help please!
The numbers are 152° and 28°
Answer:
62
Step-by-step explanation:
152-90= 62
Need help kinda stuck on this one!
Find the remainder using: synthetic division/substitution OR long division:
f(x) = 3x3 - 4x2 +5x-7 : (x-2)
0-57
Oo
O 11
O-25
Answer:
The remainder is 11
Step-by-step explanation:
Here, we want to find the remainder by using substitution
We start by equating x-2 to 0
x = 2
Substitute the value of x in the function
3(2)^3 - 4(2)^2 + 5(2) - 7
= 24-16+ 10 - 7 = 11
Find the sum of the first 7 terms of the following series, to the nearest integer.
6, 12/5, 24/25
Answer:
9.983796
Step-by-step explanation:
Every time, it becomes smaller by 5/2 (6 divided by 5/2 is 12/5.... 12/5 divided by 5/2 is 24/25)
So, the first seven terms are 6, 2.4, 0.96, 0.384, 0.1536, 0.06144, 0.024756. Add them together and your answer would be 9.983796
Pleaseeee mark me brainliest :))
Answer:
it would be 10
Step-by-step explanation:
help please will give brainiest
Answer:
the first one
Step-by-step explanation:
plz help will give brainlyest
top one : frame A.
bottom one : 6 inches
Answer:
Give brainliest to the other person who answered
Step-by-step explanation:
Have a fantastic day!
Find the area of a circle with the radius of 3.5
I only need the answer for NUMBER 6!!! PLEASEE HELP , ILL GIVE BRAINLIEST FOR THE RIGHT answer :) , just help me.
Answer:
285
Step-by-step explanation:
A man walks for x hours at a speed of
(x + 1) km/h and cycles for (x - 1) hours at
a speed of (2x + 5) km/h. If the total distance
travelled is 90 km, x
Given:
A man walks for x hours at a speed of (x + 1) km/h and cycles for (x - 1) hours at a speed of (2x + 5) km/h.
Total distance travelled is 90 km.
To find:
The value of x.
Solution:
We know that,
[tex]Speed=\dfrac{Distance}{Time}[/tex]
[tex]Speed\times Time=Distance[/tex]
A man walks for x hours at a speed of (x + 1) km/h, so walking distance is
[tex]D_1=(x+1)(x)[/tex] km
The man cycles for (x - 1) hours at a speed of (2x + 5) km/h, so the cycling distance is
[tex]D_2=(2x+5)(x-1)[/tex] km
Now,
Total distance = 90 km
[tex]D_1+D_2=90[/tex]
[tex](x+1)x+(2x+5)(x-1)=90[/tex]
[tex]x^2+x+2x^2-2x+5x-5-90=0[/tex]
[tex]3x^2+4x-95=0[/tex]
[tex]3x^2+19x-15x-95=0[/tex]
[tex]x(3x+19)-5(3x+19)=0[/tex]
[tex](3x+19)(x-5)=0[/tex]
[tex]3x+19=0\text{ and }x-5=0[/tex]
[tex]x=\dfrac{-19}{3}\text{ and }x=5[/tex]
Time cannot be negative. So, the only possible value of x is 5.
2a^2 + 11a + 15 = 0 factorise
Answer:
The answer is (2a + 5)(a + 3).
Step-by-step explanation:
The steps are :
2a² + 11a + 15 = 0
2a² + 6a + 5a + 15 = 0
2a(a + 3) + 5(a + 3) = 0
(2a + 5)(a + 3) = 0
heyheyhey ( I HATE ONLINE SCHOOL STUFF)
Answer:
Same!
Step-by-step explanation:
Answer:
same
Step-by-step explanation:
To make an equation, you need the _________ and the y-__________. If you only have 2 points, first get the __________, then use point-slope form.
Answer:
To make an equation, you need the slope and the y-intercept. If you only have 2 points, first get the slope, then use point-slope form.
Explanation:
Equations written in slope-intercept form (y=mx+b) require two pieces of information: the slope and the y-intercept, which is where the line crosses the y-axis. Point-slope form also involves the slope, which can be found from the two given points.