I need help... on this question.
Answer:
Step-by-step explanation:
A+B= we will add both expressions
A+B=3x^4+2x^2-2x+1-2x^3+4x^2-3 we will add like terms
A+B= 3x^4-2x^3+6x^2-2x-2
A-B=3x^4+2x^2-2x+1-(-2x^3+4x^2-3)
A-B=3x^4+2x^2-2x+1+2x^3-4x^2+3
A-B=3x^4+2x^3-2x^2-2x+4
Determine the total surface area of the prism below.
Answer:
I need a picture of the prism, then I will answer the question.
Step-by-step explanation:
Use the slope formula to find the slope of the lie with these points.
(8, 10), (-7, 14)
True False
18 is 3 more than 9.
18 is 3 times as much as 6.
19 is 3 times as much as 27.
9 is 3 more than 6.
Answer:
it goes in this order
false
true
false
true
The answers are as follow:
a) False
b) True
c) False
d) True
What is Number system?A system of writing numbers is known as a number system. It is the mathematical notation for consistently employing digits or other symbols to represent the numbers in a particular set. It represents the arithmetic and algebraic structure of the numbers and gives each number a distinct representation.
Given:
a) 18 is 3 more than 9.
But, 3 more than 9.= 12
So, it is false
b) 18 is 3 times as much as 6.
= 3 x 6
= 18
So, it is true
c) 19 is 3 times as much as 27.
= 3 x 27
= 81
So, it is false
d) 9 is 3 more than 6
= 3+6
= 9
So, it is true
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(the difference of d minus 3 divided by 2)
Answer:
(d-3)/2
Step-by-step explanation:
Given:
A number "d" Subtract by 3
So,
⇒ (d-3)
Product is divided by 2
So,
⇒ (d-3)/2
Solve the system by substitution.
y = 3x
y = -4x – 49
Answer:
Step-by-step explanation:
Substitute 3x into y=-4x-49
y=−4x−49
3x=−4x−49
3x+4x=−4x−49+4x(Add 4x to both sides)
7x/7=−49/7
(Divide both sides by 7)
x=−7
Step: Substitute−7forxiny=3x:
y=3x
y=(3)(−7)
y=−21(Simplify both sides of the equation)
Answer:
x=−7 and y=−21
The solution set to the given system of equation is (- 7, - 21).
Differentiate between a mathematical function, equation and expression? Function : In mathematics, a function from a set X to a set Y assigns to each element of X exactly one element of Y. The set X is called the domain of the function and the set Y is called the codomain of the functionExpression : A mathematical expression is made up of terms (constants and variables) separated by mathematical operatorsEquation : A mathematical equation is used to equate two expressions.Given are the system of equations as follows -
y = 3x
y = - 4x - 49
We have the equations as -
y = 3x .... Eq [1]
y = - 4x - 49 .... Eq [2]
Now, we can write the equation [2] as -
3x = - 4x - 49
7x = -49
x = - 7
So, we can find the value of [y] as -
y = 3x
y = 3 x - 7
y = - 21
Therefore, the solution set to the given system of equation is (- 7, - 21).
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Can somebody plz help me?
what is the probability of rolling a number greater than 3 on a standard dice
A) 1/2
B) 1/3
C) 1/6
D) 1/4
Answer:
1/2 is the answer
step-by-step explqnation:
Answer:
The answer is 1/2.
Find the area of a circle with a radius of 6 feet. Round to the hundredths place
Answer:
Area of circle = 113.04 square feet
Step-by-step explanation:
Explanation:-
Given that radius of the circle (r) = 6 feet
Area of circle
A = π r²
A = π (6)²
A = 36 π
A = 36 × 3.14
A = 113.04 square feet
True or false concave polygon has all interior angles describe any angles less than 180 Degrees degrees??
Answer:
true
Step-by-step explanation: In a concave polygon, each interior angle is less than 180°.
The data shows 68% percent of the area under the normal
distribution. This is equivalent to:
Answer: Plus or minus 1 standard deviation from the mean.
Step-by-step explanation:
According to the Empirical rule,
If the population is normally distributed then, about 68% of the population lies within 1 standard deviation from the mean value.
Here, the data shows 68% percent of the area under the normal distribution.
This is equivalent to "plus or minus 1 standard deviation from the mean."
Hence, the correct option is : plus or minus 1 standard deviation from the mean.
Which equation has a graph parallel to the graph of 9x + 3y =22?
Answer:
y = -3x + 8.3
Step-by-step explanation:
You need to rearrange 9x + 3y = 22 in the form y = mx +c.
9x+3y = 22
3y = -9x +22
y = -3x + 7.3
As long as the gradient is the same, the lines will be parallel. So you can give any number to the intercept (in this case I gave 8.3) and you will have parallel equations.
sonya has a bag with 4 green marbles, 7 orange marbles and 9 blue marbles. She randomly selects one marble, does not replace it and then selects another marble. What is the probability that sonya will pick two blue marbles?
Angie traveled 240 miles in the first 30% of her road trip. At this rate,
how long will the trip be all together?
+
+
o
200
+
o
10
20
30
Answer:
the trip would be 800 miles all together
Step-by-step explanation:
if you divide 240/3 it is 80 which means that 80 miles is 10% of the trip so you can multiply 80 by 10 to see that 800 miles is 100% of the trip.
The expression (x-5)^2 is equivalent to...
Answer:
option a x²-25
Step-by-step explanation:
(x-5)²
x²-25
I need helppp badd pleaseeeee
Answer:
it shows the unit rate of the graph per hour.
answer all 4 for braininess
Answer:Number 1 .is 33 because its the nearest number
number 2. is 3 dollars a pound s
number 3. she would take 22 minutes to walk 3.3 miles
number 4 he would drive 166 miles plz brainliest plz
Step-by-step explanation:
1.
296÷8=37
2.
15.98÷2=7.99 per pound
7.99x3=23.97
3.
3.5÷0.5=7 times as many
11x7=77 minutes or 1 hour 17 minutes
4.
500÷8=62.5 per hour
62.5x3=187.5
EM
0
What’s the domain and range?
Step-by-step explanation:
The set of input (argument) values for which a function is defined is domain.
The set of values (points) which a function can obtain is range.
In the diagram, triangle QRS is congruent to triangle XYZ. Find the measure of angle R.
Answer:
the correct answer is C. 75°
The value of ∠R = 75⁰
What are congruent triangles?The measurements of the sides and angles of two or more triangles determine whether they are congruent. A triangle's size is determined by its three sides, and its shape is determined by its three angles. If the pairs of their corresponding sides and angles are equal, two triangles are said to be congruent.
Given ΔQRS ≅ ΔXYZ
for congruency the sides and angle of both the triangles should be equal so for ΔQRS and ΔXYZ ; QR = XY, QS = XZ, and RS = YZ and
∠Q = ∠X, ∠S = ∠Z and ∠R = ∠Y
from figure ∠Q = ∠X = 55⁰, ∠S = ∠Z = 50⁰
sum of angle of triangle is 180⁰,
∠Q + ∠S + ∠R = 180⁰
∠R = 180 - 55 - 50
∠R = 75⁰
Hence ∠R = 75⁰
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suppose that 6 people sitting in a enclosed room are each generating about 400BTU's of body heat per hour. if the room is 20ft×15ft×10ft, how many BTU's per cubic foot do they produce in 5 hours?
3BTU's/ft^3
4
5
6
Answer: 4 BTUs/ft^3
Step-by-step explanation:
i just did a test and this was the right answer
Factor the algebraic expression.
30a + 25
Answer:
5(6a+5)
Step-by-step explanation:
-7a-3<2a
Please solve
Mr. Stubbert wants to buy a $520 sword, and he has a coupon for 15% off.
Select each expression that will determine how much will he pay.
PLEASE NOW!
Answer:
442
Step-by-step explanation:
What is the distance, in units, between the points (-4,5) and (8,0) in the
standard (x,y) coordinate plane?
Issacs television is 25 inches wide and 18 inches high. What is the diagonal size of Issac’s television? Round to the nearest tenth if necessary.
Answer:
Diagonal = hypotenuse. Approximately 30.8 inches to the nearest tenth.
Step-by-step explanation:
Linear Expressions
Which terms are like terms? 3t2, t, 2t, 5, 4t2, 8, t3
Select each correct answer.
A: t and 2t
B: 3t2, 4t2, t3
C: 3t2, t, 2t, 5, 4t2
D: 3t2 and 4t2
E: 3t2, t, 2t, 4t2, t3
F: 5 and 8
Answer:
Correct answers are A,D and F
Step-by-step explanation:
I need help on math.
r = 5.8 cm r = 7.1 cm
d = 11.6 cm d = 14.2 cm
C = 36.44 cm C = 44.611 cm
A = 105.68 cm2 A = 158.37 cm2
( I can't find where square is )
One spring, a group of students measured rainfall
totals at their school. This chart shows how many
inches of rain the students measured each month.
How many more inches did it rain in May than in
April?
MONTH RAINFALL
March 3.9
April 6.9
May 9.4
May have rained 2.5 more inches then in April. First you would need to subtract 9.4 because that’s how much it rained in May and then subtract it with 6.9 because that’s how much it rained in April. Then you get the answer of 2.5. You didn’t have to subtract the March because they didn’t ask you for the inches for the March.
Given the Vertex (1,0) and the Directrix y = -¼, find the equation of the quadratic
(x - 1)2
(x + 5)2
2(x - 1)2
-x2 - 1
Answer:
y = (x - 1)²
Step-by-step explanation:
A parabola is the locus of a point such that its distance from a fixed point (known as the focus) and a fixed line (known as the directrix) is always constant. The equation of a parabola is a quadratic equation.
The equation of a parabola with a horizontal directrix is given by:
(x - h)² = 4p(y - k).
Where the directrix (y) = k - p, vertex = (h, k)
Given that: Vertex (1,0) and the Directrix y = -¼, Therefore:
vertex = (h, k) = (1, 0). h = 1 and k = 0.
y = k - p
but y = -1/4. Hence:
-1/4 = k - p
p = k + 1/4
p = 0 + 1/4
p = 1/4
Since the equation of the parabola is:
(x - h)² = 4p(y - k).
Substituting:
(x - 1)² = 4(1/4)(y - 0)
(x - 1)² = y
y = (x - 1)²
y = x² - 2x + 1
Solve x-34=78 find the value of x
Answer:
112 is the answer
Step-by-step explanation:
to find the value of x, you need to add both the numbers 34 and 78 to find x.
Answer:
x=112
Step-by-step explanation:
x=78+34
(here the 34 passes to the other side, and because it is substracing, you pass it adding)
x=112
Solve for x in this inequality: -13 < 3x – 7 < 5
-13 < 3x – 7 < 5
Add 7 to all 3 terms;
-6 <3x<12
Divide all 3 terms by 3:
-2<x<4
