Answer:
1
Step-by-step explanation:
If it was 0, then the variable would not be there since anything times 0 is 0. Now you might be wondering how it is 1. Anything times 1 is itself, so there is no need to write x as 1x, you can just write it as x. Same thing with a. No need to write 1a, just a
The coefficient of a plain variable is 1.
What is coefficient?A coefficient is a number multiplied by a variable.
Whenever a variable is given without any coefficient, we consider the coefficient as 1, because multiplying any digit or variable by 1 does not change its value.
Hence, The coefficient of a plain variable is 1.
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Which function is a quadratic function? A. c(x) = 6x + 3x3 B. d(x) = x – 8x4 C. p(x) = –5x – x2 D. k(x) = 2x2 + 9x4
This is the same as p(x) = -x^2-5x
The degree is the largest exponent to determine what kind of polynomial we're dealing with.
For choice C, the degree is 2, so we have a quadratic here.
-----------
Extra info:
Choice A is cubic because the largest exponent is 3 (degree = 3)Choice B is a quartic of degree 4Choice D is the same story as choice Bif x and y vary directly and x= 60 when y=5, what is the value of y when x=36?
Answer:
12
Step-by-step explanation:
what would the vairable be in this equation 1÷k=2
Answer:
yes
Step-by-step explanation:
Barbara sells iced tea for $1.49 per bottle and water for $1.25 per bottle. She wrote an equation to find the number of bottles she needs to sell to earn $100. 1.25x + 1.49 = 100 What error did Barbara make in writing the equation? Barbara’s equation did not consider the number of bottles of water. Barbara’s equation did not consider the number of bottles of iced tea. Barbara’s equation did not use the correct price for the bottles of iced tea. Barbara's equation did not use the correct total for sales.
Answer:
B
Step-by-step explanation:
Just took the quiz!
The solution is : B = Barbara’s equation did not consider the number of bottles of iced tea.
What is equation?An equation is a mathematical statement that is made up of two expressions connected by an equal sign. In its simplest form in algebra, the definition of an equation is a mathematical statement that shows that two mathematical expressions are equal.
here, we have,
given that,
Barbara sells iced tea for $1.49 per bottle and water for $1.25 per bottle.
Let the water bottles she needs to sell be = x
Let the iced tea she needs to sell be = y
As she wants $100, she has to sell the following numbers of drinks.
1.25x + 1.49y = 100
But, Barbara wrote an equation
1.25x + 1.49 = 100
She did not put a variable with 1.49, that will depict the number of iced teas she needs to sell.
Hence, option B is correct.
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If the hypotenuse of a right angled triangle is 37cm long and a side is 35cm. Find the length of the third side. 9cm
10cm
11cm
12cm
Answer:
From the pythagorean theorem:
AB²+BC²=AC²
x+35²=37²
x+1225=1369
x=1369-1225
x²=144 cm
x=radical 144=12
Answer:
[tex]\huge\boxed{b = 12 cm}[/tex]
Step-by-step explanation:
Using Pythagorean Theorem:
[tex]c^2 = a^2 + b^2[/tex]
Where c is hypotenuse(37 cm), and one of the side is 35 cm.
=> [tex]37^2 = 35^2 + b^2[/tex]
=> [tex]b^2 = 37^2-35^2\\[/tex]
=> [tex]b^2 = 1369 - 1225\\[/tex]
=> [tex]b^2 = 144[/tex]
Taking sqrt on both sides
=> b = 12 cm
You have a box with 6 blue marbles, 7 red marbles, and 2 yellow marbles. You are going to pull out one
marble, record its color, put it back in the box and draw another marble. What is the probability of
pulling out a yellow marble followed by a blue marble?
Answer:
12/225 or 4/75.
Step-by-step explanation:
I hope this helps!
Answer as a fraction = 4/75
Answer in decimal form = 0.05333 (approximate)
Answer in percent form = 5.333% (approximate)
=======================================================
Work Shown:
A = event of pulling a yellow marble on the first selection
P(A) = 2/15 since there are 2 yellow out of 6+7+2=15 total.
B = event of pulling a blue marble on the second selection
P(B) = 6/15 = 2/5
Note how the 15 does not drop to 14 since we put the first marble back. Therefore events A and B are independent
---------
P(A and B) = probability of getting yellow, then blue
P(A and B) = P(A)*P(B)
P(A and B) = (2/15)*(2/5)
P(A and B) = (2*2)/(15*5)
P(A and B) = 4/75
P(A and B) = 0.05333 approximately
P(A and B) = 5.333% approximately
What is the value of x? 4/5 times 1/10 =3/10
Answer:
D) 1/2
Step-by-step explanation:
4/5x-1/10=3/10
4/5x=3/10+1/10
4/5x=4/10
4/5x=2/5
x=2/5÷4/5
x=2/5*5/4
x=10/20
x=1/2
plz help ASAP !! will mark u brainlist
Answer:
D. The 4th choice.
Step-by-step explanation:
We can see from the graph that the point (-2, -5) is excluded from the line since there is there an open circle.
The domain is all real numbers except -2.
The range is all real numbers except -5.
D. The 4th choice.
D. The 4th choice.
D. The 4th choice.
D. The 4th choice.
D. The 4th choice.
D. The 4th choice.
D. The 4th choice.
D. The 4th choice.
Which method and additional information would prove triangle ONP and triangle MNL similar by the AA similarity postulate?
A. Use rigid and nonrigid transformations to prove segment PN over segment MN equals segment LN over segment ON.
B. Use a rigid transformation to prove that angle NPO is congruent to angle NLM.
C. Use rigid and nonrigid transformations to prove segment PN over segment ML equals segment LN over segment ON.
D. Use a rigid transformation to prove that angle NLM is congruent to angle LMN.
Use a rigid transformation to prove that angle NPO is congruent to angle NLM
=====================================================
Explanation:
The AA stands for "angle angle". So we need two pairs of angles to prove the triangles to be similar. The first pair of angles is the vertical angles ONP and MNL, which are congruent. Any pair of vertical angles are always congruent.
The second pair of angles could either be
angle NOP = angle NMLangle NPO = angle NLMso we have a choice on which to pick. The pairing angle NOP = angle NML is not listed in the answer choices, but angle NPO = angle NLM is listed as choice B.
Saying angle NLM = angle LMN is not useful because those two angles are part of the same triangle. The two angles must be in separate triangles to be able to tie the triangles together.
We would use a rigid transformation to have angle NPO move to angle NLM, or vice versa through the use of a rotation and a translation.
Angle Angle AA similarity postulate states that two triangles are similar if
two angles in one of the triangles are congruent (equal) to two angles in the
other triangle
The correct option for the method and additional information that would
prove triangle ONP and triangle MNL similar by AA similarity postulate is
option B.
B. Use rigid transformation to prove that angle NPO is congruent to angle NLM
The reason for arriving at the above selection is as follows;
The known parameter in triangle ΔONP and ΔMNL are;
Lines MO and LP intersect at vertex point N.
The angles on opposite side of the point N (either side of the X shape
formed by the two lines) which are ∠ONP and ∠LNM are vertically opposite
angles or opposite angles.
According to vertically opposite angles theorem ∠ONP and ∠LNM, which
are vertically opposite angles are congruent, and we can write.
∠ONP ≅ ∠LNM
The required parameter;
To find the additional information that would prove ΔONP and ΔMNL by
AA (Angle-Angle) similarity postulate.
Strategy;
Given that from the drawing, one (vertex) angle in one triangle is congruent
to one (vertex) angle in the other triangle, that is ∠ONP ≅ ∠LNM, it is
required to prove that one other angle in triangle ΔONP is congruent to a
corresponding angle in triangle ΔMNL.
Solution;
Prove that either ∠NPO or ∠NOP in ΔONP are congruent to ∠NLM or
∠NML respectively in ΔMNL by performing rigid transformations
(transformations that does not change shape) on either ΔONP or ΔMNL
including;
Rotating triangle ΔONP by 180° with origin at point N, to form the image ΔO'N'P'.Translating the vertex point P' in the image ΔO'N'P', to the location of the point L in ΔMNL, and verify that the segments LN and LM in ΔMNL coincide with the segments P'N' and P'O' respectively of triangle ΔO'N'P'.Therefore, the correct option is option B. Use rigid transformation to prove
that angle NPO is congruent to angle NLM.
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If a 2.2-kg ball is thrown with a velocity of 10m/s what is its KE
Answer:
110 joulesStep-by-step explanation:
[tex]Mass = 2.2kg\\Velocity = 10m/s \\K.E = \frac{1}{2} mv^2\\K.E = \frac{1}{2} \times 2.2 \times 10^2\\K.E = \frac{1}{2} \times 220\\K.E = \frac{220}{2} \\K.E = 110 joules[/tex]
Answer:
The answer is 110 JoulesStep-by-step explanation:
Kinetic energy ( KE) of an object is given by
[tex]KE = \frac{1}{2} m {v}^{2} [/tex]
where
m is the mass
v is the velocity
From the question
m = 2.2 kg
v = 10 m/s
Substitute these values into the above formula
That's
[tex]KE = \frac{1}{2} \times 2.2 \times {10}^{2} [/tex]
[tex]KE = 1.1 \times 10[/tex]
We have the final answer as
Kinetic energy = 110 JoulesHope this helps you
the compound interest of a sum of money for 1 year and 2 years are rs 450 and rs 945 respectively. find the rate of interest compounded yearly and he sum.
Answer:
The answer is below
Step-by-step explanation:
The compound interest is given by the formula:
[tex]A=P(1+\frac{r}{n} )^{nt}[/tex]
Where A is the final amount, p is the principal (initial amount), r is the rate, t is the number of period and n is the number of times it was compounded per period.
Given that:
The interest is compounded yearly, i.e n = 1, for 1 year, t = 1, the compound interest is Rs 450 i.e A = 450. Therefore:
[tex]450=P(1+\frac{r}{1} )^{1*1}=P(1+r)\\450=P(1+r).\ .\ .\ (1)[/tex]
For 2 year, t = 2, the compound interest is Rs 945 i.e A = 945. Therefore:
[tex]945=P(1+\frac{r}{1} )^{1*2}=P(1+r)^2\\945=P(1+r)^2.\ .\ .\ (2)[/tex]
Dividing equation 2 by equation 1 gives:
2.1 = 1 + r
r = 2.1 - 1 = 1.1
r = 1.1
Put r = 1.1 in 450 = P(1 + r)
450 = P(1 + 1.1)
450 = 1.11P
P = 405.4
Therefore the rate is 1.1 = 110% and P = Rs 405.4
Julie has 12 gummy worms on her plate. She also has some gummy worms in a bag. All together, she has 36 gummy worms. The letter g stands for the number of gummy worms in the bag. Which equation can you use to find g?
Answer:
12 + g = 36
Step-by-step explanation:
If you work out the Two-Step Equation, you will get the amount for g.
Hi i kinda stuck on this question.
Help please.
Workings Please
Answer:
D. 4[tex]m^{2}[/tex]
Step-by-step explanation:
First find the area of 1 tile
= length * breadth
= 8 * 5
= 40[tex]cm^{2}[/tex]= 40/10000 = 0.004
no. of tiles= 1000
therefore, total area of 1000 tiles = area of room= 1000*0.004
=4[tex]m^{2}[/tex]
(9.9 x 10^2)/(1.5 x 10^-14) =
Does anyone know how to solve this?
Answer:
6.6 × 10^16
Step-by-step explanation:
Tell which set or sets the number below belongs to: natural numbers, whole numbers, integers, rational numbers, irrational numbers, or real numbers.
- 14
Answer:
I think the answers are, rational and real.
Step-by-step explanation:
- 14 belongs to the sets of rational numbers and real numbers.
What is a rational number in math?
Rational Numbers: Any number that may be written as a ratio (or fraction) of integers is a rational quantity.
A Rational number is a number that is expressed because of the ratio of two integers, wherein the denominator ought to now not be the same as zero, whereas an irrational number cannot be expressed inside the form of fractions. Rational numbers are terminating decimals however irrational numbers are non-terminating and non-habitual.
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The graph of a quadratic function having the form f(x) = ax? + bx + c passes
through the points (0, -8), (3, 10), and (6,34). What is the value of the function
when x = -3?
Answer:
f(-3) = -20
Step-by-step explanation:
We observe that the given x-values are 3 units apart, and that the x-value we're concerned with is also 3 units from the first of those given. So, a simple way to work this is to consider the sequence for x = 6, 3, 0, -3. The corresponding sequence of f(x) values is ...
34, 10, -8, ?
The first differences of these numbers are ...
10 -34 = -24
-8 -10 = -18
And the second difference is ...
-18 -(-24) = 6
For a quadratic function, second differences are constant. This means the next first-difference will be ...
? -(-8) = -18 +6
? = -12 -8 = -20
The value of the function at x=-3 is -20.
_____
The attachment shows using a graphing calculator to do a quadratic regression on the given points. The graph can then be used to find the point of interest. There are algebraic ways to do this, too, but they are somewhat more complicated than the 5 addition/subtraction operations we needed to find the solution. (Had the required x-value been different, we might have chosen a different approach.)
Find the value of c and a.
Answer:
c = 93.5° , a = 52°Step-by-step explanation:
x = 52°
b = ¹/₂(2x) = x = 52°
y = 180° - 90° - x
y = 90° - 52° = 38°
a = 180° - 90° - y = 90° - 38° = 52°
p = 83°
q = ¹/₂p = 41.5°
(180° - c) + b + q = 180°
180° - c + 52° + 41.5° = 180°
- c = - 93.5°
c = 93.5°
from the numbers below
is this a parallelogram?
Answer:
No
Step-by-step explanation:
A parallelogram has opposite angels equal and opposite sides equal. in this case, only a single pair of angels are equal.
which ones does not belong 1/2 5/3 2/10 2/5
Answer:
the one that doesn't belong is 5/3
4. Which correlation coefficient is stronger 0.52 or -0.52?
Answer:
They are both the same because the coefficient of -0.52 is negative and 0.52 is a positive which makes 0.52 a stronger coefficient.
y=-5x 2 + 15x - 10 fffffft
Answer:
To find the x-intercept, substitute in 0 for y and solve for x. To find the y-intercept, substitute in 0 for x and solve for y.
x-intercept(s): ( 2,0 ), ( 1,0 ) (2,0), (1,0)
y-intercept(s): ( 0, − 10 )
What equation represents a population of 300 animals at the crease and an annual rate of 23%
-5 + x = 2 1/2
How do I solve this problem
Answer:
x = 15/2
Step-by-step explanation:
Solve for x:
x - 5 = 2 + 1/2
Hint: | Put the fractions in 2 + 1/2 over a common denominator.
Put 2 + 1/2 over the common denominator 2. 2 + 1/2 = (2×2)/2 + 1/2:
x - 5 = (2×2)/2 + 1/2
Hint: | Multiply 2 and 2 together.
2×2 = 4:
x - 5 = 4/2 + 1/2
Hint: | Add the fractions over a common denominator to a single fraction.
4/2 + 1/2 = (4 + 1)/2:
x - 5 = (4 + 1)/2
Hint: | Evaluate 4 + 1.
4 + 1 = 5:
x - 5 = 5/2
Hint: | Isolate terms with x to the left hand side.
Add 5 to both sides:
x + (5 - 5) = 5/2 + 5
Hint: | Look for the difference of two identical terms.
5 - 5 = 0:
x = 5/2 + 5
Hint: | Put the fractions in 5/2 + 5 over a common denominator.
Put 5/2 + 5 over the common denominator 2. 5/2 + 5 = 5/2 + (2×5)/2:
x = 5/2 + (2×5)/2
Hint: | Multiply 2 and 5 together.
2×5 = 10:
x = 5/2 + 10/2
Hint: | Add the fractions over a common denominator to a single fraction.
5/2 + 10/2 = (5 + 10)/2:
x = (5 + 10)/2
Hint: | Evaluate 5 + 10.
5 + 10 = 15:
Answer: x = 15/2
Answer:
7 1/2
Step-by-step explanation:
Hello!
To solve this we have to get x by itself
What we do to one side of the equation we have to do to the other
-5 + x = 2 1/2
To get -5 to the other side we have to add 5 to make it zero
What we do to the left side we have to do to the right
-5 + 5 + x = 2 1/2 + 5
Simplify
0 + x = 7 1/2
We can drop the 0
x = 7 1/2
The answer is 7 1/2
Hope this helps!
A yacht sailed from wharf A in a south-east direction for 10km and north-east for 24km. Find how far the yacht is from wharf A.
(A)26km
(B)21km
(C) 45km
(D) 40km
Answer:
D
Step-by-step explanation:
The answer is 40km.
24 plus 10 equals to 34 and a few extra km would lead to 40km
A new Community sports complex is being built in Erie. The perimeter of the rectangular playing is 292 yards. The length of the field is 7 yards less than double the width. What are the dimensions of the playing field?
Answer:
length = 95 yardswidth = 51 yardsStep-by-step explanation:
Perimeter of a rectangle = 2l + 2w
where
l is the length
w is the width
From the question
Perimeter = 292 yards
The statement
The length of the field is 7 yards less than double the width is written as
l = 2w - 7
Substitute the expression into the above formula and solve for the width
292 = 2( 2w - 7) + 2w
292 = 4w - 14 + 2w
292 = 6w - 14
6w = 292 + 14
6w = 306
Divide both sides by 6
w = 51
Substitute this value into l = 2w - 7
That's
l = 2(51) - 7
l = 102 - 7
l = 95
Therefore we have
length = 95 yards
width = 51 yards
Hope this helps you
Which best describes how to determine the decimal number that is modeled? 7 of 100 parts have been shaded, and 7 hundredths is written as 0.07 7 of 10 parts have been shaded, and 7 tenths is written as 0.7 7 of 100 parts have been shaded, and 7 hundredths is written as 0.7 7 of 10 parts have been shaded, and 7 tenths is written as 0.07
Answer:
7 of 100 parts have been shaded, and 7 hundredths is written as 0.07
Step-by-step explanation:
Note that we have a grid of 100 squares and 7 of those squares are shaded. We can represent the shaded portion by saying 7/100 which is equivalent to .07.
With this information, we can say 7 out of 100 is shaded and is representative of 7 hundredths.
Note that each digit after the decimal is a multiple of (1/10). We can express this as (1/10)^n where n is the digit place after the decimal.
In this case, we have 7, two digits after the decimal so it will be equivalent to 7 * (1/10)^2 = 7 * (1/100) = 7/100.
Cheers.
Hi pls help if you’re good at trigonometry, tysm
Answer:
1) a = 65
2) b = 61
3) c = 55
Step-by-step explanation:
1)
a + 115 = 180
a = 65
2)
b + 119 = 180
a = 61
3)
c + 75 + 50 = 180
c = 55
find the area of a regular octagon with a perimeter of 80 ft and an apothem of 12.07 feet
Answer:
The area of a regular octagon with a perimeter of 80 ft and an apothem of 12.07 feet is 482.8 ft².
Step-by-step explanation:
An octagon is a polygon with eight sides. An octagon is regular (also called a regular octagon) is a polygon with all eight sides equal.
The apothem of a regular octagon is the shortest distance between the center and any of its sides, in other words, it is the distance that separates the center of the polygon from the central point of each side of the octagon.
The area is calculated using the following formula:
[tex]Area=\frac{n*L*Ap}{2}[/tex]
Where:
n is the number of sides. L is the length of one of the sides. Ap is the value of the apothem.Being n = 8 being an octagon and the perimeter P the sum of the sides of the octagon (P = 8 * L), the area of the regular octagon can be calculated by:
[tex]Area=\frac{P*Ap}{2}[/tex]
In this case:
P=80 ftAp=12.07 ftReplacing:
[tex]Area=\frac{80ft*12.07ft}{2}[/tex]
Solving:
Area=482.8 ft²
The area of a regular octagon with a perimeter of 80 ft and an apothem of 12.07 feet is 482.8 ft².
what is the coefficient of x in 4x/5 a)1/5 b.5 c.4/5 d.4 e.-0.8
Answer:
C
[tex] \frac{4}{5} [/tex]
Co efficient means the number or value beside preventing the variable from standing alone
Answer:
c. 4/5
Step-by-step explanation:
4x/5 is the same as 4/5 * x