how many terms of the series 1+4+7........will add up to 425?
Answer:
17 terms
Step-by-step explanation:
Let the number of terms be n which will add up to 425.
So, 425=(n/2)*(2+(n-1)*3). 850=n*(3n-1), n=17 or - 50/3 but n can't be negative, so the answer is n=17
Natalie and Lexi are recycling aluminum cans to earn money for camp. Natalie's barrel of cans weighs 115 lb., and Lexi's barrel of cans weighs 98 lb. If the barrels each weigh 8 lb. when empty, how many pounds of cans have they collected?
Answer:
197 pounds of cans
Step-by-step explanation:
Find how many pounds of cans they have collected by subtracting 8 from both of their barrel weights:
115 - 8
= 107
98 - 8
= 90
Add these two weights together:
107 + 90
= 197
So, they collected 197 pounds of cans
Which number makes the equation true?
blank divided by thirty equals one-sixth
A. 5
B. 6
C. 15
D. 60
in triangle ABC the measure of angle A is 90. the length of AB is 1 unit the length of AC is 8 unit, find the legth of BC
Answer:
8.06
Step-by-step explanation:
by using pythagoras
BC^2=1^2+8^2
BC^2=1+64
BC^2=65
BC=√65
BC=8.06
A candybar box is in the shape of a triangular prism. the volume of the box is 1,200 cubic centimeters.
Part A; what is the height of the base. show your work.
Part B; What is the approximate amount of the cardboard used to make the candybox? Explain how you got your answer.
please solve part c.d.e and f
SEE THE IMAGE FOR SOLUTION
HOPE IT HELPS
HAVE A GREAT DAY
Will Mark Brainlest helppp plss
Answer:
you can ask from it will be easy for you actually I don't know answern
8 cm 10 cm 15 cm surface area of a rectangle
Answer:
surface area of a square = 2 ( lb + bh + hl )
given that,
length = 8cm
breadth = 10cm
height = 15 cm
surface area = 2 ( 8* 10 + 10*15 + 15*8 )
= 2 ( 80 + 150 + 120 )
= 2 * 350
= 700 [tex]cm^{2}[/tex]
hope this answer helps you!!
x+1=0
Giải hộ em với
Answer:
x = -1
Step-by-step explanation:
-Subtract 1 from both sides of the equation
x + 1 = 0
x + 1 - 1 = 0 - 1
-simplify
x = -1
What is an example in your house of a point ?
Answer:
Step-by-step explanation:
Nothing. A point is dimensionless. Ugh what an awful LOL.
How about the tip of a candle that has never been lit?
Duncan took a math quiz last week. There were 55 problems on the quiz and Duncan
answered 40% of them correctly. How many problems did Duncan get correct?
Answer: Duncan got 22 questions correct
Step-by-step explanation:
Total questions in quiz = 55
Total answered correctly by Duncan = 40% of 55
Total answers he got correct = 40% of 55
= 40/100×55
= 22
Therefore Duncan got 22 questions correct
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Find the equation of the linear function represented by the table below in slope-intercept form.
Help plzz will give brainiest
Answer:
y = 2x+4
Step-by-step explanation:
First find the slope
m = ( y2-y1)/(x2-x1)
= ( 12-6)/(4-1)
= 6/3
= 2
The slope intercept form is
y = mx+b where m is the slope and b is the y intercept
y = 2x+b
Using a point from the table
10 = 2(3)+b
10 = 6+b
10-6 = b
4=b
y = 2x+4
Suppose average pizza delivery times are normally distributed with an unknown population mean and a population standard deviation of six minutes. A random sample of 28 pizza delivery restaurants is taken and has a sample mean delivery time of 36 minutes. Find a 90% confidence interval estimate for the population mean delivery time.
Answer:
90% confidence interval = (34.069,37.931)
Step-by-step explanation:
90% 1.645
Xbar / Point Est. 36
µ 0
σ 6
n 28
Confidence Interval
(34.069,37.931)
answer please
explain
answer
please
thanks
giving brainiest out (correct answers only to get brainly)
Answer:
0Step-by-step explanation:
0 is the correct answer
Answer:
0
Step-by-step explanation:
The natural numbers are numbers that you can count on your fingers
1,2,3,4,5.......
Whole numbers include 0
0,1,2,3,4.....
This polygon is a Quadrilateral (4 sided figure). Based on the interior angle sum, find the value of x.
Answer:
Step-by-step explanation:
The total sum of interior angles of a quadilateral is 360°
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Maya express charges 15 dollar for each person and great holiday charges fixed 84dollar and extra 12 dollar for a person. If the total amount charged by each company is same find the number of people going on holiday
Step-by-step explanation:
15 dollar for each
15*70*12
then 84*70
total amount. the above
Answer:
:>
Step-by-step explanation:
15 dollar for each
15*70*12
then 84*70
total amount. the above
In the figure shown, line AB is parallel to line CD. What is the measure of angle x? Explain your answer.
Answer:
x = 53°
Step-by-step explanation:
The angle 115° and the angle formed by the sum of x+62° are external alternates angles, so it means they have the same measure, and you can find the value of x doing:
115°- 62° = 53°
What is the behavior of the graph y=2x3+x2−7x−6 at each of its zeros
At the given zeros of the function (-1.5, -1, and 2), the graph will behave like a sine curve, cutting the x-axis at three points.
The given polynomial expression:
y = 2x³ + x² - 7x - 6
The zeros of a polynomial equation are the values of x at which the given function equals zero.
The first zero of the given function is at x = 2;
f(2) = 2(2)³ + (2)² - 7(2) - 6
= 16 + 4 - 14 - 6
= 20 - 20 = 0
The second zero of the given function is at x = -1;
f(-1) = 2(-1)³ + (-1)² - 7(-1) - 6
= -2 + 1 + 7 - 6
= - 8 + 8 = 0
The third zero of the given function is at x = -1.5;
f(-1.5) = 2(-1.5)³ + (-1.5)² - 7(-1.5) - 6
= - 6.75 + 2.25 + 10.5 - 6
= - 12.75 + 12.75 = 0
The zeros of the given function include;
----(-1.5)-------(-1)------------------------------(2)--------
Therefore, at the given zeros of the function (-1.5, -1, and 2), the graph will behave like a sine curve, cutting the x-axis at three points.
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Find the lateral area of this square
based pyramid.
10 in
5 in
Answer:
The lateral area of this square pyramid is 100 in^2
Step-by-step explanation:
The lateral area of a polyhedron is the added area of all lateral faces (faces on the side) excluding the bases.
In this case, the lateral sides of the square pyramid are the 4 triangular faces on the sides.
AREA OF ONE TRIANGULAR FACE (given by the formula 1/2 x bh):
1/2 x 10 x 5 = 25
Multiply that by 4 since all 4 triangular faces are similar:
25 x 4 = 100
So the lateral area of the square pyramid is 100 in^2.
Please rate my answer once you know its score! :DD
2. Find the missing angle x.
155°
60°
X
Answer:
exterior angle property use ...
the exterior angle of an angle is equal to sum of rest 2 interior angles in a triangle
155 = 60 + x
x = 155 - 60 = 95
The missing angle x in the triangle is 95 degrees.
Here, we have,
from the given figure we get,
one angle of the triangle is: 180- 155 = 25 degrees.
To find the missing angle x in the triangle, we can use the fact that the sum of the angles in a triangle is always 180 degrees.
In this case, we are given two angles of the triangle: 25 degrees and 60 degrees.
Let's denote the missing angle as x.
To find x, we can subtract the sum of the given angles from 180 degrees:
x = 180° - (25° + 60°).
Simplifying the expression inside the parentheses:
x = 180° - 85°.
Subtracting:
x = 95°.
Therefore, the missing angle x in the triangle is 95 degrees.
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the adjoining circle with O has a radius of 14cm ABCD is a square drawn inside the circle calculate the area of the shaded region plzz any help plzz
Answer:
bro just make me the branilist
The scores of players on a golf team are shown in the table. The team’s combined score was 0. What was Travis’s score?
Answer:here’s the table
Step-by-step explanation:
Celina -3
Jannie 3
Sami 1
Ted 4
Travis ??
Answer:
Step-by-step explanation:
-5
is {3,…} a defined set
Answer:
is infinite set... because dots meaning non stop
Look at this cone:
,,
We know
[tex]\boxed{\sf \star TSA_{(Cone)}=\pi r(r+\ell)}[/tex]
[tex]\\ \sf\longmapsto TSA_{(Old\:Cone)}=2
\dfrac{22}{7}\times 2(2+3)[/tex]
[tex]\\ \sf\longmapsto TSA_{(Old\:Cone)}=\dfrac{44}{7}(5)[/tex]
[tex]\\ \sf\longmapsto TSA_{(Old\:Cone)}=\dfrac{220}{7}[/tex]
[tex]\\ \sf\longmapsto TSA_{(Old\:Cone)}=31.4ft^2[/tex]
Now
New slant height =2(3)=6cmNew radius=2(2)=4cm[tex]\\ \sf\longmapsto TSA_{(New\:Cone)}=\dfrac{22}{7}\times 4(4+6)[/tex]
[tex]\\ \sf\longmapsto TSA_{(New\:Cone)}=\dfrac{88}{7}(10)[/tex]
[tex]\\ \sf\longmapsto TSA_{(New\:Cone)}=\dfrac{880}{7}[/tex]
[tex]\\ \sf\longmapsto TSA_{(New\:Cone)}=125.7cm^2[/tex]
So
[tex]\\ \sf\longmapsto \dfrac{TSA_{(New\:Cone)}}{TSA_{(Old\:Cone)}}=\dfrac{125.7}{31.4}[/tex]
[tex]\\ \sf\longmapsto \dfrac{TSA_{(New\:Cone)}}{TSA_{(Old\:Cone)}}=\dfrac{4}{1}[/tex]
[tex]\\ \sf\longmapsto\underline{\boxed{\bf{ {TSA_{(New\:Cone)}}:{TSA_{(Old\:Cone)}}=4:1}}}[/tex]
Find the distance between the two points in simplest radical form.
(7,-1) and (3,8)
Answer:
Submit Answer
attempt 1 ou
Answer:
sqrt( 97)
Step-by-step explanation:
To find the distance between 2 points
d = sqrt( (x2-x1)^2 + (y2-y1)^2)
= sqrt( (3-7)^2 + (8 - -1)^2)
= sqrt( ( -4)^2 + (8+1)^2)
= sqrt( 16+9^2)
= sqrt(16+81)
= sqrt( 97)
DESPERATLY NEED HELP PLEASE HELP MEEE IF YOU CAN!!!!!!
Determine if the triangles are congruent. If they are, give the rule that you used to determine congruence
please show how you got it so I can see if the answer makes sense!!!!
Answer:
No
Step-by-step explanation:
In ΔABC, we see that the line that shows congruent is on a side with a right angle, but in ΔDEF we see that the congruent line is on the opposite side of the right triangle.
If my answer is incorrect, pls correct me!
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-Chetan K
A medical school admissions officer was interested in whether there is a difference in MCAT test scores (the standardized test used for medical school admission) between (1) biological sciences majors, (2) social science majors and (3) math majors. The admissions officer randomly sampled 50 students from each of these majors who applied to medical school in 2014 and recorded their MCAT score. Here are the three sample standard deviations for the MCAT scores for the three groups (biological sciences majors, social sciences majors, math majors): Column Std. Head Biological Sciences 5.3115216 Social Sciences 6.1661669 Math 4.7821787 Based on this information, do the data meet the condition of equal population standard deviations for the use of the ANOVA? Yes, because 6.17 − 4.78 < 2. Yes, because 6.17/4.78 < 2. No, because the standard deviations are not equal.
Answer:
Yes, because 6.17/4.78 < 2
Step-by-step explanation:
To test for equal standard deviation ;
Condition is met if the ratio of the large sample standard deviation to the smaer sample standard deviation is less than 2
Sample standard deviation;
Sciences 6.1661669
Math 4.7821787
Biological Sciences 5.3115216
The largest sample standard deviation = 6.1661669
The smallest sample standard deviation = 4.7821787
F statistic = 6.1661669 / 4.7821787 = 1.2894053
F statistic < 2 ; Hence, condition for equal standard deviation is met.
The ratio of people watching whales to people fishing was five to seven if there were 72 people in all how many were fishing
There were 42 people who are fishing if the ratio of people watching whales to people fishing was five to seven.
What is a numerical expression?A numerical expression is algebraic information stated in the form of numbers and variables that are unknown. Information can is used to generate numerical expressions.
We have been given that the ratio of people watching whales to people fishing was five to seven if there were 72 people.
Let the number of people who watch whales would be 5x
And the number of people who are fishing would be 7x
According to the given condition, the required solution would be as:
⇒ 5x + 7x = 72
⇒ 12x = 72
⇒ x = 6
So the number of people who are fishing = 7 × 6 = 42
Therefore, there were 42 people who are fishing.
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Someone plzzzz help I don’t get this at all
Answer:
Option B
Step-by-step explanation:
The slope of the line BC is,
[tex] \frac{ - 2 - 8}{7 - 3} [/tex]
[tex] = \frac{ - 10}{4} = - \frac{5}{2} [/tex]
Since AD is altitude to BC, we can say AD is perpendicular to BC, so the slope of the line AD which is perpendicular line to BC will be,
[tex] \frac{2}{5} [/tex]
Someone please help me Find 35% of 250
[tex]\\ \bull\sf\longmapsto 250\times 35\%[/tex]
[tex]\\ \bull\sf\longmapsto 250\times \dfrac{35}{100}[/tex]
[tex]\\ \bull\sf\longmapsto 5\times \dfrac{35}{2}[/tex]
[tex]\\ \bull\sf\longmapsto \dfrac{175}{2}[/tex]
[tex]\\ \bull\sf\longmapsto 87.5[/tex]
[tex]\bf \large \implies \: \frac{35}{100} \: \times \: 250 \\ [/tex]
[tex]\bf \large \implies \: \frac{35}{10 \cancel0} \: \times \: 25 \cancel0[/tex]
[tex]\bf \large \implies \: \frac { \cancel{35} \: \: ^{3.5} }{ \cancel{10}} \: \times \: 25[/tex]
[tex]\bf \large \implies \: 3.5 \: \times \: 25[/tex]
[tex]\bf \large \implies \: 87.5[/tex]
