b) The graph of y = x^2 + 1 is drawn on
the axes on the left.
Use the graph to estimate the
values of x when y = 4.
Give your answers to 1 decimal
place.
Answers
Answer:
(-1.7,1.7)
Step-by-step explanation:
OK, first draw the line y=4.
It's a bit misleading- where you think 4 should go is actually 2!
Check the scale and draw down where the two points meet on the line. They should be the same.
You get -1.7 and 1.7
The value of x is [tex]x=\pm\sqrt{3}[/tex]
Graph of parabola:The given function is;
[tex]y=x^{2} +1[/tex]
We have to find value of x when [tex]y=4[/tex]
[tex]y=x^{2} +1\\\\4=x^{2} +1\\\\x^{2} =4-1=3\\\\x=\pm\sqrt{3}[/tex]
Graph is also attached below.
Learn more about the parabola here:
https://brainly.com/question/12896871
Related Questions
Solve for [tex]x:logx 37 = 2[/tex]
Answers
x^2=37 ===》 x = + radical 37( acceptable )
===》 x = - radical 37(unacceptable)
make triangles and find the central angle
Answers
Answer:
Step-by-step explanation:
It 14
Answer:
this is like related to fractions right?
Step-by-step explanation:
You roll a number cube once and flip a coin. Find the probability of rolling an even number and flipping tails.
Answers
Answer:
1/4
Step-by-step explanation:
P(even,tails) = 1/2 x 1/2
What would the simplified equivalent of (3^-3)^2 be?
Answers
Answer:
3
-----
2
Step-by-step explanation:
Parallel lines never intersect, therefore, there is one solution
Answers
Answer:
Step-by-step explanation:
If parallel lines don't intersect, then there can't be any solutions. An intersection represents a solution.
If this is a true false question, the statement is false.
Round these numbers to whole numbers: 287.32 901.8 12.0913442 6,843.36 37.9
Answers
Answer:
287 902 12 6843 38
Step-by-step explanation:
.5 or higher rounds up
Answer:
287
902
12
6843
38
Step-by-step explanation:
In the triangle below, which equation can be used to solve for x?
Answers
Answer:
file?
Step-by-step explanation:
PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!!PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!
Answers
Answer:
Real numbers are all the rational numbers such as -7 and 4/3 and all irrational numbers. Real numbers are used mainly in counting and are used in measurement which is always present in real-world situations. These numbers help us to quantify things around.
Find S7of the sum of the geometric series.a1=−4374,a7=−6,r=1/3
Group of answer choices
A. −6568
B. −6583
C. −6563
D. −6534
Answers
Answer:
The sum of the first 7 terms in the geometric sequence is -6558
Step-by-step explanation:
s7 refers to the sum of the first 7 terms of the geometric sequence
To calculate the sum of terms, we use the sum of terms formula
We have this generally given as;
Sn = a(1-r^n)/(1-r)
a refers to the first term, given as a1 which is -4374
r is the common ratio which is 1/3
n is the number of terms, which is 7
substituting these values;
s7 = -4374(1-(1/3)^7)/(1-1/3)
s7 = -4374(1-(1/3)^7)/2/3
s7 = (3 * -4374)/2 * (1- (1/3)^7
s7 = -6561 * (1-1/2187)
s7 = -6561 * (2187-1)/2187
= -6561 * 2186/2187
= -6558
HELP!! I have been stuck on these questions forever! Im having to multiply or devide in scientific notation. Im having to find the sum or difference. I will mark brainiest.
Answers
HELP! WILL GIVE BRAINLIEST AND 100 POINTS
Cade and Tyce both tried to find the missing side of the right triangle.
A right triangle is shown. The legs are labeled 6 and 9. A right angle is labeled in between them.
Cade's Work Tyce's Work
a2 + b2 = c2 a2 + b2 = c2
62 + b2 = 92 62 + 92 = c2
36 + b2 = 81 36 + 81 = c2
b2 = 45 117 = c2
Square root b squared equals square root 45. Square root 117 equals c squared.
b ≈ 6.71 10.82 ≈ c
Is either of them correct? Explain your reasoning.
Answers
Answer: a2 + b2 = c2 a2 + b2 = c2 is correct
Step-by-step explanation:
reason being:
if a2 and b2 are in the equation that would make c2 a2 rational and when the number is rational thats automatically easy to know the area and square root and thats the key! the questions states the spuare root and area which makes it all easy to know that the correct one is a2 + b2 = c2 a2 + b2 = c2.
(Hopes this helps)
Step-by-step explanation:
Answer:
Tyce is correct because you are finding the hyphenous and not the missing side.
Step-by-step explanation:
I also did the work to double check and I got the same answer as Tyce.
A dartboard has a diameter of 30 inches. What are its radius and circumference?
Answers
Answer:
radius = 15 in.
circumference = 94.2 in.
Step-by-step explanation:
radius = diameter/2 = 30 in./2 = 15 in.
circumference = (pi)d = 3.14 * 30 in. = 94.2 in.
I need help I don’t understand
Answers
Answer:
x = 9
Step-by-step explanation:
By the property of intersecting secants:
[tex]4(x - 3 + 4) = 5(x - 6 + 5) \\ \\ 4(x + 1) = 5(x - 1) \\ \\ 4x + 4 = 5x - 5 \\ \\ 4x - 5x = - 5 - 4 \\ \\ - x = - 9 \\ \\ x = 9[/tex]
Choose a value for point P that is between -6 and -7.
Answers
Answer:
-6.5
Step-by-step explanation:
please answer this question i will give you brainliest!!!!
Answers
Answer:
your answer will be 25 .....ok
Answer:
x = 25
Step-by-step explanation:
Given y varies directly with x then the equation relating them is
y = kx ← k is the constant of variation
To find k use the condition y = 3 when x = 15
3 = 15k ( divide both sides by 15 )
[tex]\frac{3}{15}[/tex] = k, that is k = [tex]\frac{1}{5}[/tex]
y = [tex]\frac{1}{5}[/tex] x ← equation of variation
When y = 5 , then
5 = [tex]\frac{1}{5}[/tex]x ( multiply both sides by 5 to clear the fraction )
25 = x
. What is the value of x in the figure? * 1 point Captionless Image A. 180 B. 90 C. 40 D. 8
Answers
john is twice as old as his son. his son is 5 years older than his sister . in five years to come John will be 3 times as old as his daughter. how old is his son now?
Answers
Answer:
5
Step-by-step explanation:
Terrible wording on the question as the "father" is 15 the "son" is 10 and the sister is 0 or just born
J = john
S = son
X = sister
J = 2s
S = 5 + X
3(x+5) = J + 5
J = 2(5+x) = 2x + 10
3x+15 = 2x +10 + 5
x = 0
can someone help please
Answers
I WILL GIVE BRAINLIEST.
Answers
can someone help with the two triangle questions (will mark brainliest!!)
Answers
Answer: Number 1 is c=89 ft
Number 2 is b=3 cm
Step-by-step explanation: a²+b²=c²
For number 1, 39 ft is a and 80 ft is b so
39²+80²=c² so 39² is 39x39=1521 and 80² is 80x80=6400 so 6400+1521=7921
7921=c² and the square root of 7921 is 89 so c=89 ft
For number 2, a=1.6 cm and c=3.4 cm so 3.4²-1.6²=b²
3.4² so 3.4x3.4 which is 11.56
1.6² so 1.6x1.6 which is 2.56
11.56-2.56=c² and 11.56-2.56=9
Square root of 9 is 3 so b=3
So number 2 answer is b=3 cm
I hope this helps
A bookshelf has 36 fiction books and 44 non-fiction books. What percentage of the total books are non-fiction?
Answers
Answer:
55%
Step-by-step explanation:
The total number of books is 80 (36+44) and 44 of the 80 books (44/80) are nonfiction. Converting this fraction to a percent would equal 55%.
pls help immediately!!! i’ll be giving brainiest to those who provide the write answer and who don’t leave a link!
Answers
Answer:
B
Step-by-step explanation:
A train travels 60 miles in 30 minutes. How long will it take (in minutes) for the train to travel 180 miles?
Answers
Answer:
It will take 90 minutes for the train to travel 180 miles.
Step-by-step explanation:
180 ÷ 60 = 3
3 × 30 = 90
Answer:
90 minutes
Step-by-step explanation:
60+60+60=180
30+30+30=90
The total cost of buying 6 pencils can be written as the ratio 6 pencils : $3. Which model
represents this ratio of pencils to dollars?
Answers
Answer:
The last one should be correct
Step-by-step explanation:
6 divided by 3 is 2. For every dollar, you would get two pencils. Hope this helps! :)
Flora drew the following graph to answer the question. What was her mistake when she drew her graph? (NO LINKS)
Answers
Answer:
Her elevation went down too quickly, if she is going down 300 ft per hour at a constant rate, at 1 hour, she should be at 2700 feet. It should take her about 10 hours to get down the mountain.
can someone pleasee help, il choose brainliest if best
Answers
Answer:true false true true
Step-by-step explanation:
Answer:
true
false
true
true
Mr. Yasin paid a total of 9.43 to buy three boxes of cereal. If he paid 3.99 for the 1st box and 2.97 for the 2nd box how much did Mr. Yasin pay for third box of cereal?
$4.72, 2.47, 6.96, or 3.54
Answers
Answer:
$2.47
Step-by-step explanation:
Pretend if Mr. Yasin didn't pay for the 3rd box, find out how much he had left after paying for the first 2 boxes.
9.43 - 3.99 - 2.97 = 2.47
Solve the system using elimination.
y=-x-3
y=x2-15
Answers
Answer:
X=4, y=-7
Step-by-step explanation:
To use elimination method, you want to cancel x or y when adding the equations together. So let’s multiply the first equation by -2
2(y)=2(-x-3)
2y=-2x-6
——————
add above equation 2y=-2x-6
to second equation Y=2x-15
add together. 3y=-21
Y=-7
—————————————-
solve for x by substituting y value (7) into either equation
y=-x-3
-7=-x-3
-4=-x
4=x
how many months are in 59 days???
Answers
1 month 29 days but if the month have 29 days each then the it will be 2 months
Melissa is saving $25 that she earned for washing her mom's car. She earns $10 every week
for doing chores, which she also saves.
Which function can be used to find t, the amount of money Melissa will have saved at the end
of 'n weeks of doing chores?
Answers
Answer:
25+ 10n= t
Step-by-step explanation:
you already have 25. Then you get $10 each week, which is 10n.