find the value of a2+b2 and a4+b4 when a+b=5 and ab =4
Answer:
a² + b² = 17
a^4 + b^4 = 257
Step-by-step explanation:
The only solutions for a+b=5 and ab =4 is:
4 and 1 but we don't know which is which. In this case it doesn't matter though.
a² + b² = 16 + 1 = 17
a^4 + b^4 = 256 + 1 = 257
WILL MARK BRAINLEST
The mean of 16 items was found to be 30. On rechecking, it was found that two items were wrongly taken as 22 and 18 instead of 32 and 28 respectively. Find the correct mean. Round to the nearest Hundredth.
Answer: The answer is 31.25 because The mean of 16 items was found to be 30. So once you checked, it was that 2 items were wrongly taken as 22 and 18 instead of 32 and 28 respectively. Sum = mean no of items = 30 16 = 480
(32 +28) – (22 + 18) = 20
Correct mean = = 31.25
Step-by-step explanation: My apologize that I took long I hope this helps.
Isaac is painting a 1.5-foot by 2-foot by 4-foot storage box with weather-resistant paint. Since the box is to be used on the patio, all of the exterior sides, including the
top and bottom, must be painted. What is the total surface area that Isaac will paint?
Answer:
34
Step-by-step explanation:
Onur is participating in a walkathon fundraiser. Two donors promised to donate money based on the total distance he walks. The money, A, in dollars, that he receives from the first donor given that he walks d kilometers is given by the formula A(d)=10d. The money, B, in dollars, that he receives from the second donor given that he walks d kilometers is given by the formula B(d)=2d+d^2.
Let T be the total money that Onur raises from those donors by walking d kilometers in the walkathon.
Write a formula for T(d), in terms of A(d) and B(d).
T(d)= ?
Write a formula for T(d), terms of d.
T(d)=?
Answer:
1. T(d) = A(d) + B(d)
2. T(d) = 12d + d²
Step-by-step explanation:
From the question given above, the following data were obtained:
A(d) = 10d
B(d) = 2d + d²
1. Determination of the formula of T(d) in terms of A(d) and B(d).
T(d) is the total money obtained. Thus,
T(d) = A(d) + B(d)
2. Determination of the formula of T(d) in terms of d.
A(d) = 10d
B(d) = 2d + d²
T(d) =?
T(d) = A(d) + B(d)
T(d) = 10d + 2d + d²
T(d) = 12d + d²
Mitra travelled 7.87km in bus and 1.5 km in autorickshaw to reach in her office.What is the total distance her residence from her office? *
Answer:
9.37 km
Step-by-step explanation:
Total distance = length travelled in the bus + length travelled in the autorickshaw
7.87 km + 1.5km = 9.37 km
What is the area of the triangle?
12 mi
13 m
Som
O 180 m
225 m2
360 mº
O 450 m
Answer:
30 x 12 divided by 2 is 180
Step-by-step explanation:
180 is your answer
Formula of a triangle is:
BH x 1/2
Answer:
C
Step-by-step explanation:
I think
-0.2(x-20)=44-x Please i really need help. and please add an explanation if u want to.
Answer: x = 50
Step-by-step explanation:
-0.2(x - 20) = 44 - x
-0.2x + 4 = 44 - x (distribute the -0.2)
+ x + x
-----------------------------------------------------
0.8x + 4 = 44
- 4 - 4
-------------------------------------------------------
0.8x = 40 (divide by 0.8)
x = 50
Find a, b and c giving reasons for each answer.
2)
3)
1)
55
b
С
b
b
110°
с
a
a
С
120°
5)
6)
25 °
4)
115
a
10°
ab
Answer/Step-by-step explanation:
1.
✔️a = 180 - 110 (consecutive angles are supplementary)
a = 70°
✔️b = a (corresponding angles are congruent)
b = 70°
✔️c = 110° (alternate interior angles are congruent)
2.
✔️a = 180 - 120 (linear pair)
a = 60°
✔️b = a (corresponding angles are congruent)
b = 60°
✔️c = a (alternate interior angles are congruent)
c = 60°
3.
✔️a = 55° (corresponding angles are congruent)
✔️b = 55° (Vertical angles are congruent)
✔️c = 180 - 55 = 125° (linear pair)
4.
✔️a = 115° (corresponding angles are congruent)
✔️b = 180 - a (linear pair)
b = 180 - 115
b = 65°
✔️c = b (vertical angles are congruent)
c = 65°
5.
✔️a = 180 - 25 = 155° (supplementary angles)
✔️b = 25° (corresponding angles)
✔️c = 25° (vertical angles)
6.
✔️a = 180 - 10 = 170° (linear pair)
✔️b = a (corresponding angles are congruent)
b = 170°
✔️c = 10° (corresponding angles are congruent)
What must be true about the coordinates of any point that lies in the third quadrant?
Answer:
(-, -)
Step-by-step explanation:
The x value is negative and the y value is also negative
I don't know to much about this can you help me on it.
Which of these best describes pi
The ratio of the radius of a circle to its diameter
The ratio of the circumference of a circle to its diameter
The radius of a circle times 3.14
The square root of the area of a circle
A dealer sold 200 tennis racquets. Some were sold at $18 each and others were sold at $33 each. The total sales were 4,800. How many of each priced racquet was sold?
Explain your answer.
what does x represent in the equation 3x+1=10
Answer:
3
Step-by-step explanation:
3x+1=10 subtract 1 to both sides
3x+1-1=10-1
3x=9 divide both sides by three
3x/3=9/3
x=3
find x, then find each angle
Answer:
x=8
Step-by-step explanation:
23x=184
x=8
Mark got 487 questions wrong out of 9374 questions. What is his grade?
Answer:
5%
Step-by-step explanation:
487/9374=0.05
0.05 would translate to 5%
Hope this helps! :)
Answer:
F (5%)
Step-by-step explanation:
To find the percentage of questions he got correct:
487/9374=0.051....
So, assuming an F is less than 50%, he got an F.
What’s the Awnser my dudes and dudetts
Answer: What do you want us to solve there is no photo and you didn't write any problem
Step-by-step explanation:
Which equations does the number 7 make true? Select all that apply. 20/21 × _____ = 3/20 13/28 × _____ = 5/2 11/14 × _____ = 11/2 3/35 × _____ = 3/5 5/7 × _____ = 5
The equations that the number 7 makes true will be 11/14 × 7 = 11/2, 3/35 × 7 = 3/5, and 5/7 × 7= 5. Then the correct options are C, D, and E.
What is an equivalent expression?The equivalent is the expression that is in different forms but is equal to the same value.
The definition of simplicity is making something simpler to achieve or grasp while also making it a little less difficult.
The equations do the number 7 make true will be given as,
Let's check all the options. Then we have
20/21 × 7 = 3/20
20 / 3 ≠ 3 / 20
13/28 × 7 = 5/2
13 / 4 ≠ 5 / 2
11/14 × 7 = 11/2
11 / 2 = 11 / 2
3/35 × 7 = 3/5
3 / 5 = 3 / 5
5/7 × 7= 5
5 = 5
The equations that the number 7 makes true will be 11/14 × 7 = 11/2, 3/35 × 7 = 3/5, and 5/7 × 7= 5. Then the correct options are C, D, and E.
More about the equivalent link is given below.
https://brainly.com/question/889935
#SPJ5
Standard Form of a linear equation. Match the phrase with the equivalent term
Ax + By = C
equation
line
point
x-intercept
y-intercept
Which one is correct I’ll mark Brainlest
Answer:
pretty sure its equation, if its wrong im sorry!
what is the value of the x- intercept of the following equation? 2x-6y=14
Answer:
x-3y-7=0
Step-by-step explanation:
2x-6y=14
2x-6y-7=0
x-3y-7=0
Is c 9/10 ? I’m probably wrong
I’m a little confused please help
Find the total surface area of the rectangular pyramid.
Answer:
I think it's 52 but I'm not sure
Step-by-step explanation:
The 6 stands for the side right? so I did the 6x it's four side. and the 7 stands for all the triangles right? so I did 7x the other four and added the answers together
sorry if it's wrong tho
Ashely found 2 boxes of sugar in the kitchen. The green boxe is 1.26 kg and the red box is 1.026 kg. Which box contains more sugar?
Answer:
The green box by 0.234kg of sugar
Step-by-step explanation:
Given data
The green box weight= 1.26 kg
The red box weight= 1.026 kg
comparing the two values
the green box contains 0.234kg more sugar
=1.26-1.026
=0.234kg
ok whoever helps me is da best so plz :) 50 points
Answer:
A(-2/3)
B(-1/6)
C(1/2)
D(4/3)
Step-by-step explanation:
There are 6 tics in each section.
That means each tic is 1/6
A(-4/6) -> (-2/3)
B(-1/6)
C(3/6) -> (1/2)
D(8/6) -> (4/3)
What is the completely factored form of xy3 – x3y?
Answer: x y (y - x) (x + y)
-x y (x - y) (x + y)
x (y^3 - x^2 y)
Real roots:
x = 0
y = 0
Roots:
y = -x
y = x
hope this helps
Step-by-step explanation:
Answer
A
Step-by-step explanation:
Please help. my grade in math is terrible all i want is help please.
Charmaine buys candy that costs $5 per pound. She will spend less than $45 on candy. What are the possible numbers of pounds she will buy?
Use P for the number of pounds Charmaine will buy.
Write your answer as an inequality solved for P.
Answer:
8 pounds
Step-by-step explanation:
x = number of pounds
5x<40
x<40/5
so she can buy X<8 pounds
NEED ANSWER ASAP PLEASE
4. Which statement below is true about linear functions?
(1) Linear functions grow by equal factors over equal intervals
(2) Linear functions grow by equal differences over equal intervals
(3) Linear functions grown by equal differences over unequal intervals
(4) Linear functions grow by unequal factors over equal intervals
Answer:
(1) linear functions grow by equal factors over equal intervals
I think this is right, I may be wrong
Step-by-step explanation:
Hope this helps :)
Graph the linear equation 7x+4y=-28
Answer:F
Step-by-step explanation:
What is the slope of a line that goes through the points (10, -2) and (5,-5)? m =
Y1-Y2
11-12
Answer:
m = 3/5
Step-by-step explanation:
use the formula so m = -5 - -2 / 5 - 10 , so m = -5+2 / -5
m = -3/-5 so m = 3/5
PLEASEEEE HELP !!!!!!!!!!!!!!!!! Abanoub is using a machine to drill for oil that is 535 feet under the ground. The drill he is using is drilling at a rate of -35 feet per hour. How long did it take him to reach the oil? a 15.28 Hours b - 15.28 Hours c 18,725 Hours d -18,725 Hours
Answer:
a) 15.28 hours
Step-by-step explanation:
535/-35
≈-15.28
but time is always positive so it would take him 15.28 hours
Given AB= 20, BV=12, VA=14 and SR is a mid segment, find the given lengths
Given:
AB= 20, BV=12, VA=14 and SR is a mid segment.
To find:
The lengths of SR and AR.
Solution:
SR is a mid segment. So, SR is parallel to the non-included side BV and the length of SR is half of BV.
[tex]SR=\dfrac{1}{2}BV[/tex]
[tex]SR=\dfrac{1}{2}(12)[/tex]
[tex]SR=6[/tex]
SR is a mid segment. So, it divides the included sides in two equal parts. It means R is the midpoint of VA.
[tex]AR=\dfrac{1}{2}VA[/tex]
[tex]AR=\dfrac{1}{2}(14)[/tex]
[tex]AR=7[/tex]
Therefore, the measure of SR is 6 units and the measure of AR is 7 units.