Answer:
Step-by-step explanation:
x^2+16x+63=0 is standard form to solve
If you factor it the answer is
(x+7)(x+9) or x = -7, -9
Marco calculated that he could run a 5K race in 28 minutes. His actual time was 26 minutes. What is the percent error in his estimation? Round to the nearest tenths place.
Answer:
He is wrong by 7.14%
Answer:
7.14
Step-by-step explanation:
Given the figure above, determine
Answer:
20 degrees
Step-by-step explanation:
Ans in attachment
hope it helps :)
plz mark as brainliest
Find three consecutive integers such that the sum of twice the second and four times the third is twenty-five more than the first?
Answer:
3, 4, 5
Step-by-step explanation:
Three consecutive integers means that
[tex]X_1, X_2 = X_1 + 1, X_3 = X_2 + 1[/tex]
The sum of twice the second and 4 times the third is 25 times the first number
[tex]X_1 + 25 = 2X_2 + 4X_3\\X_1 + 25 = 2(X_1 + 1) + 4(X_1 + 2)\\X_1 + 25 = 2X_1 + 2 + 4X_1 + 8\\X_1 + 25= 6X_1 + 10\\5X_1 = 15\\X_1 = 3\\X_2 = 4, \\X_3 = 5[/tex]
In 2010, the population of China was around 1.400,000,000 and growing
at a rate of 1.65% per year. What should the population be this year?*
Answer:
1423100000
Step-by-step explanation:
1.65% of 1.4 billion is 23,100,000. Knowing this you just add the two numbers together to find what an extra 1.65% of people being added to the population would result in.
The current population of China is 1,423,100,000 using the compound rate of increment method.
What is a compound rate of increment?The compound rate of increment is a type of increment that is compounded after time period it is said to be compounded. After that particular period, the increment is calculated and then added with the primary number. For the next duration, the increment is calculated on the sum.
Given, the total of population of China in 2010 was (P) = 1,400,000,000.
The rate of increase of population is (r) = 1.65%
Duration (n) = (2022 - 2010) years = 12 years.
Therefore, the total of population of China in 2022 (S)
= P(1 + r)ⁿ
= 1,400,000,000(1 + 1.65/100)¹²
= 1,400,000,000(1 + 0.0165)¹²
= 1,400,000,000(1.0165)¹²
= 1,423,100,000
Therefore, the population of China in 2022 is 1,423,100,000.
Learn more about compound rate of increment here: brainly.com/question/25857212
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HELP NEEDED TIMED i need help figuring out how to do this
Answer:
The answer is 3/4
99
4
Step-by-step explanation:
You and a friend ordered fajitas for two, and agreed to split the bill. The bill came to $19.06. You decided to give a 15 % tip. How much did you pay?
At the rate shown in the table, how many weeks did it take to sell 700 books? [Type your answer as a number.]
Answer:
3
Step-by-step explanation:
Answer:
10 weeksI hope this help you
AB and BC are two equal chords of a circle of length 2√5 cm each. If radius of the circle is 5 cm, find the length (in cm) of the chord AC.
Answer:
10
Step-by-step explanation:
radius is half and ab and bc = ac then 5+5=10
royce drove 42 miles in 60 minutes. at this rate, how far will royce travel in 1 minute
what is the sell tax of 8.00 dollars
Answer:
A tax of 7.5 percent was added to the product to make it equal to 8.6. So, divide 7.5 by 100 to get 0.075. Divide the final amount by the value above to find the original amount before the tax was added. In this example: 8.6 / 1.075 = 8.
Step-by-step explanation:
Not sure if this will help but yea and this from google
Solve the rational equation quantity 3 times x minus 5 end quantity divided by 7 equals four sevenths. A: f(n) = f(n − 1) ⋅ 0.3 + 25, n > 0 B: f(n) = 100 − f(n − 1) ⋅ 0.3 + 25, n > 0 C: f(n) = f(n − 1) ⋅ 0.7 + 25, n > 0 D:f(n) = 100 − f(n − 1) ⋅ 0.7 + 25, n > 0
Answer:
2.8 < x -0
Step-by-step explanation:
25 points for right answers
yard
1
Rachel is making a bracelet and a necklace for her friend. She needs
3
5
of wire to make a bracelet and yard of wire to make a necklace. She
6
estimates that she will need about yards of wire.
9
Which best explains her estimate?
1.037 word form. Just some help
Answer:
one and thirty-seven thousandths
or simpler one point zero three seven
Step-by-step explanation:
Is -0.003 irrational or rational
Answer:
rational it can be written as a fraction
I hope this is good enough:
Drag and drop the correct answers
to show the area of the shaded
parts. DOK 2
Given that the radius of the circle is
2 yd.
Step-by-step explanation:
Area of first triangle = 1/2bh
the base of the triangle = the radius of the semi-circle = 2yd
height = 5yd
Area = 1/2(5yd)(2yd)
A = 5yd(yd)
A = 5y^2d^2 squared units.
since the second triangle also has the same dimensions as the first triangle
hence:
Area of the second triangle = 5y^2d^2 squared units.
Area of semi-circle = πr^2
Area = π(2yd)^2
A = 4πy^2d^2 squared units
answer me plsssssssssssssssssssssssssssssssss brainlyest
Answer: I will say it’s C because if you decide 8 by both sides 8 and cancel out 204.8/8=25.6, so it gives the answer of m=25.6.
-by-step explanation:
point of the circumference
Answer:
(-14, 4)
Step-by-step explanation:
I graphed it on Desmos Graphing calculator. This is a great resource. Hope this helps!
Step-by-step explanation:
( - 14, -4)
is a right answer
omg im so behind someone pls help
Larry has $20 to spend at the store. He plans to purchase five items that cost $5.79, $7.63, $3.46, $2.99, and $3.65. Larry estimated his total cost to make sure he has enough money for his purchases. Is his estimate accurate? Explain why or why not.
Answer:
he don't have the money
Step-by-step explanation:
5.79+7.63=13.42+3.46=16.88+2.99=19.87+3.65=23.52$
Answer:
does not. 5.79 + 7.63 + 3.46 +2.99 + 3.65 is equivalent to $23.52. And on top of that you don’t know if it’s before or after tax.
Step-by-step explanation:
WILL GIVE LOTS OF EXTRA POINTS PLEASE HELP ME ASAP! MORE THAN ONE PERSON CAN ANSWER I WILL GIVE BOTH OF YOU EXTRA POINTS!!
Answer:
(x+4, y+1)
Step-by-step explanation:
I couldn't see the options below but this is the right one
Plz name me brainliest Thank You
Answer:
(x+4, y-1)
Step-by-step explanation:
Makes the most sense-
The y value goes down one, which makes it negative and if u go along the x line it goes over 4 and sense it goes to the right, it would be positive.
Given Z1= 5 – 2i and z2 = 3 + 2i, which letter
represents Z1-Z2
A
B
C
D
Answer:
I believe it is A
Step-by-step explanation:
When you subtract z1 from z2, you get 2-4i, which on the graph is point A.
Point A represents 2-4i in the graph given. Therefore, option (1) is the correct answer.
Given that, [tex]z_{1}=5-2i[/tex] and [tex]z_{2}=3+2i[/tex].
We need to find the value of [tex]z_{1}-z_{2}[/tex].
What are complex numbers?A complex number can be visually represented as a pair of numbers (a, b) forming a vector on a diagram called an Argand diagram, representing the complex plane.
Now, [tex]z_{1}-z_{2}[/tex]=5-2i-(3+2i)
=5-2i-3-2i
=2-4i
Here, 4i is the imaginary and 2 real numbers.
Point A represents 2-4i in the graph given. Therefore, option (1) is the correct answer.
To learn more about the complex plane visit:
https://brainly.com/question/12280282.
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What is the value of x in the right triangle?
90
26
10
37
O 127
O 90
O 53
Which angle in ABC has the largest measure?
Answer:
Angle B
Step-by-step explanation:
Angle B because the measure of angle B is 12 . Angle A has a measure of 7 and angle C has a meausre of 10 which both measures of the angles are less than angle B. Think of it like this... 17 people (7+10) went to a Bakery. There were only 7 cupcakes and 10 sweet potato pies. To start with there were 35 cupcakes and 35 sweet potato pies. 7 people ordered cupcakes and 10 people ordered sweet potato pie. There were 18 left of the 2 deserts. 18 is greater than 7 and 10. That´s why angle B is the angle that has the largest measure. 12 is greater than 7 and 10. If there were only 7 milkshakes left and 10 people wanted a milkshake, only 7 people would be able to get a milkshake. 3 people wouldn´t be able to get a milkshake
So angle B is the correct answer.
Answer: angle b
Step-by-step explanation:
Find the 91st term of the arithmetic sequence 5,−14,−33,...
Answer:
-54
Step-by-step explanation:
Answer:
Let's simplify
91st(5)−14−33
Step-by-step explanation:
step-by-step
=455st−47.
I hope my answer helped
Solve 4a= 12 jvyctxychvuvu
Answer:
The answer is a = 3
Step-by-step explanation:
Because 4 * a = 12 you can also reverse it and make it 12 / 4 = a, and 12 / 4 = 3, so that is your answer.
Each month, Ellie spends 6 hours in tap class at her dance studio. If each month she spends 30% of her class time in tap class, what is the total number of hours she spends in dance classes each month? Show your work or explain how you found your answer in complete sentences.
Answer:
high so I think your answer might be so says each month at least $26 and tap class at her dance studio if each when she spends 30 of her class time in tap class how is the total number of hours spent it in dance class each month show your work or explain how he found your answer in a sentence so basically divide 30 by 6 and then you get your answer which is 5
Write the equation of the line passing through the points (44,6) and (-4,-6)
Answer:
Y = 1/4x - 5
Step-by-step explanation:
Slope (m = y2-y1 / x2-x1) is 1/4 and using one point substituting it instead of x and y you get y - intercept of -5.
Hope this helps. Pls give brainliest.
Select the correct answer.
Which graph represents a direct variation?
Answer:
it has to be c
Step-by-step explanation:
Answer:
c is the correct answer
Step-by-step explanation:
A can of drink costs 32p. The cost of the drink has increased to 38p.
Jenny calculates that this is a percentage increase of 19%
Is Jenny's percentage correct?
PLZ SHOW WORKING OUT
Answer:
Jenny's percentage isn't correct
Step-by-step explanation:
You'd have to divide first:
38 / 32 = 1.1875 = (rounded) 1.19%
The percentage increase is 1.19%
Answer:
the percentage is 100 because you add 32 and 38 and equals 100 if you were to subtract you would have got 6%