Answers
Answer:
x = 33
Step-by-step explanation:
x - 12 and 2x + 3 form a right angle , then
x - 12 + 2x + 3 = 90
3x - 9 = 90 ( add 9 to both sides )
3x = 99 ( divide both sides by 3 )
x = 33
Related Questions
Scores on a national math test are Normally distributed, with a mean score of 490 and a standard deviation of 50. Which test score represents the top 20%, rounded to the nearest whole number?
Find the z-table here.
426
448
532
554
Answers
Answer:
532
Step-by-step explanation:
The score that represents the top 20% = A score = 80%
Z score for 80% percentile = 0.842
We solve using the z score formula
z = (x-μ)/σ, where
x is the raw score = ??
μ is the population mean = 490
and σ is the population standard deviation = 50
Hence:
0.842 = x - 490/50
Cross Multiply
0.842 × 50 = x - 490
x = 0.842 × 50 + 490
x = 42.1 + 490
x = 532.1
Approximately = 532
Therefore, the test score = 532
Answer:
532
Step-by-step explanation:
edg 2020-2021
Please help if you can!!!
Answers
Answer:
Step-by-step explanation:
y = ax² + bx + c
Plug in the three given points, then solve for a, b, c
(-3,0): 0 = 9a - 3b + c
(4,0): 0 = 16a + 4a + c
(0,-12): -12 = c
9a - 3b = 12
3a - b = 4
16a + 4b = 12
4a + b = 3
a = 1
b = -1
y = x² - x - 12
Miguel and three of his friends went to the
movies. They originally had a total of $40. Each boy had the same amount
of money and spent $7.50 on a ticket. How much money did each boy
have left after buying his ticket? Write and solve an equation that represents the situation. Explain how you solved your equation. Compare the arithmetic solution and algebraic solution.
Answers
Answer:
either 17.5 or 10
Step-by-step explanation:
if you minus 40 3 times you get 17.5
Which diagram matches the equation or description.
Answers
I believe the answer to this diagram should be Diagram B
what is 7 as a mixed number in the simplest form?
Answers
Answer:
7 is the simplest form. A mixed number needs a fraction
Step-by-step explanation:
Answer:
7/1
7
Step-by-step explanation:
Solve for each question.
Answers
Answer:
PN = 30
PNM = 90 degrees
PNL = 90 degrees
hope i helped you
Step-by-step explanation:
Luke was packing up his old toys. He managed to squeeze eight toys into a box. If Luke filled up seven boxes, how many toys did he pack total?
Answers
Answer:
56????
Step-by-step explanation:
What is the value of the expression
-15 - (-7) + (-1) + 7 - 6?
Answers
What is the probability that Nathan scores three goals if he take six shots in the game .
Answers
He has a 50/50 chance, so three
.
Answer:
waaa waaa
Step-by-step explanation:
i wont to play fortnite but i can because i have home work :(
HELP PLZ!!!
A chord is a diameter.
-always
-sometimes
-never
Answers
Answer:
always hope this helps :)
Step-by-step explanation:
Step-by-step explanation:
sometimes would be your answer<3
The answer is sometimes, but this is only when the chord passes through the centermost point on the circle.
The scale of a map says that 6 cm represents 15 km,
What is the actual number of kilometers that is represented by 16 cm on the map
Answers
can some one help me with this
Answers
Answer:
Actually i don't know what is the wanted but now
i will find the total of the teenagers.
Step-by-step explanation:
[tex] \frac{4000}{45\%} = \frac{x}{100\%} \\ x = \frac{4000 \times 100}{45} \\ x = 8889 \: \: teenagers[/tex]
I hope that is useful for you :)
Answer:
this is tating the plant
PLEASE ANSWER HONESTLY (PLEASE BE HELPFULL I HAVE BEEN STUCK ON THIS PROBLEM) WILL MARK BRANIEST IF CORRECT. (no links my computer is slow and no ctrl c ctrol v if possible
Answers
Answer:
a^2+b^2=c^2 look below
Step-by-step explanation:
Count the squares so
3^2+4^2=5^2
3*3=9
4*4=16
5*5=25
9+16=25 and it does check out
this should help if u need more explanation ill be more then happy to explain to you
An electrician charges $100 per visit plus $75/h for house calls. Write an algebraic expression that describes the service charges for one household visit. Use your expressions to find the total service charge for a 2.5 –h repair job.
Answers
Answer:
100(2.5)+75=$325
Step-by-step explanation:
Anne claims that a store-brand fertilizer works better than homemade compost as a soil enhancement when growing tomatoes. To test her theory, she plants two tomato plants in each of five planters. One plant in each planter is grown in soil with storebrand fertilizer and the other plant is grown in soil with homemade compost, with the choice of soil determined at random. In three months, she will harvest and weigh the tomatoes from each plant. What is the correct confidence interval Anne should use to analyze these data
Answers
Answer: Paired t interval for μdiff
Step-by-step explanation:
The confidence interval suitable for analysing the data described in the scenario above is the paired t test which is employed when there are two different sets of measured reading or observation for each subject. In the scenario above, the subjects are of of the different planters employed whereby the pair of measurement are the weight of tomatoes obtained for each of the two different fertilizer types applied to each of the two plants in a planter. With these data, we can measure the difference in the effectiveness of each of the store brand and homegrown compost.
whats 1x500 plsssssssssssssssssss
Answers
Its 500
because anything that is getting multiplied by one is the same number.
Answer:
500
Step-by-step explanation:
1 x whatever number is always gonna be the number you multiply.
Angle measures and segment lengths - find x do not round
Answers
Answer: 12
Step-by-step explanation:
Answer:
12
Step-by-step explanation:
are a trapezoid and a parallelogram sometimes, always, or never similar?
Answers
No, a trapezoid is not a parallelogram. They both are quadrilaterals which have 4 sides each. Parallelogram has opposite sides equal and parallel, but trapezoid has one set of sides parallel but not equal. Parallelogram has opposite angles equal.
5k + 30 = -20 - 5k
Solve for K.
Answers
5k + 30 = -20 - 5k
5k + 5k = -20 - 30
10k = -50 / : 10
k = -5
Answer:
-5 = k
Step-by-step explanation:
5k + 30 = -20 - 5k
5k + 30 + 20 = 5k + 50
-20 - 5k + 20 = -5k
5k + 50 = -5k
5k + 50 - 5k = 50
-5k - 5k = -10k
50 = -10k
50 / -10 = -5
-10k / -10 = k
-5 = k
ASAP NEED HELP DUE TMR
Answers
If your running a race and you passed the person in second place what place would you be in now?
Answers
Answer:
the answer is first place
Answer:
Second place
Step-by-step explanation:
Because that person was in SECOND PLACE and you were behind them, you two switched because you got ahead of them, but you are NOT in FIRST place, because there is still one person in front of you. Good luck!
What’s the missing term ?
Answers
The area of a right triangle is 39.6cm2 , and the base of the triangle is 12in . Which of the following values is the height of the triangle?
Answers
Answer:
2.598cm
Step-by-step explanation:
Area of a triangle =1/2 * base * Height
Given
ARea = 39.6cm^2
Base= 12in = 2.54 * 12
Base = 30.48cm
Required
Height
Substitute
39.6 = 1/2 * 30.48 * H
39.6 = 15.24 * H
H = 39.6/15.24
H = 2.598cm
Hence the height of the triangle is 2.598cm
20 POINTS Please Will MARK AS A BRAINLEST
Answers
Answer:
tanA = [tex]\frac{12}{5}[/tex]
Step-by-step explanation:
tanA = [tex]\frac{opposite}{adjacent}[/tex] = [tex]\frac{BC}{AB}[/tex] = [tex]\frac{24}{10}[/tex] = [tex]\frac{12}{5}[/tex]
Answer:
67.38
Step-by-step explanation:
Tan =opposite/adjacent
=24/10
=2.4
Tan 2.4=67.38, when used on a calculator, i.e,shift tan 2.4
• How much do customers have to spend in order to raise $1,000 for the pet rescue program? Amount Spent (dollars) 120 Amount Donated (dollars) 1000
Answers
Complete question :
a pet store had a special offer this weekend. for every $120 that customers spend, $3 is donated to a pet rescue program. How much do customers have to spend in order to raise $1000 for the pet rescue program?
Answer:
$40000
Step-by-step explanation:
Offer :
For every $120 spent ; $3 is donated
In other to raise $1000 ; $x would have to be spent ; we can obtain the value of x using cross multiplication ;
$120 = $3
$x = $1000
Cross multiply
$(120 * 1000) = $3 * x
$120000 = $3x
x = 120000 / 3
x = 40,000
Hence, in other to raise $1000 ; $40000 would have to be spent by customers.
HELP I NEED IT NOW THANKS
Answers
Y represents the percentage of the price
Hope this helps
Subtract the expressions
(4x + 6) - (2x + 3)
options:
2x + 9
6x + 9
2x + 3
6x + 3
Answers
Answer:
Yap, the answer is definitely 2x + 3, I got it right lol.
Step-by-step explanation: OOOOOOOOFFFFFF
With equation does not represent a proportional relationship
A y=5x
B y= 1 = 1/2 x
C y= x + 5
D 2y =5x
Answers
Answer:
x (weeks). 0. 1. 2. 3. 4 y (savings in dollars). 25. 30. 35. 40. 45. The relationship is linear but ... 5. 6 slope = unit rate = 2 words/min slope = unit rate = 0.4 ft/s y = 1_. 2 x. Unit 2. 182 ... Write an equation that represents the proportional relationship shown in ... does not charge a fixed rate but charges $1.00 per mile.
Step-by-step explanation
slope: 2 y-intercept_-_Equation: y=2x-1 4.slope: 13 y-intercept_l Equatio ... Mo Parallel to y= -5x+8 __y=-5x+1) (same slope) m= -5. No slope ... (no y value, only x-value) denominator 0 ... The amount y (in cups) of flour is proportional to the number x of eggs in a recipe. ... Write an equation that represents the situation.
Enter the slope of the line through the points (-9, -6) and (3, -9)
Answers
Answer:
-1/4 slope
Step-by-step explanation:
y2 -y1 = -9 - (-6) = -3
x2-x1= 3 -9 = 12
-3/12 = - 1/4
what is the area of the figure
Answers
Answer:
24 cm
Step-by-step explanation:
then add them up gives you 24