Answer:
4.9
Step-by-step explanation:
Plug in 13 and 2 for each variable separately to get 0.7(13) - 2.1(2). 0.7 multiplied by 13 equals to 9.1 and 2.1 multiplied by 2 equals 4.2. Subtract 4.2 from 9.1 to get your final answer which is 4.9.
. Find three consecutive square numbers whose sum is 149.
Answer:
The three consecutive square numbers that added together give 149 are 6, 7 and 8.
Step-by-step explanation:
To determine which are the three square consecutive numbers that added together add up to 149, the following calculation must be performed:
1 x 1 = 1
2 x 2 = 4
3 x 3 = 9
4 x 4 = 16
5 x 5 = 25
6 x 6 = 36
7 x 7 = 49
8 x 8 = 64
9 x 9 = 81
10 x 10 = 100
Thus, we can see that 36 + 49 + 64 gives the result 149. Therefore, the three consecutive square numbers that added together give 149 are 6, 7 and 8.
Can u pls help me with this question
WILL GIVE BRAINLIEST!!!
Event B is a subset of the sample space S.
what is represented by the shaded area?
A. the complement of B
B. the intersection of B and S
C. the union of B and S
D. the complements of S
Step-by-step explanation:
The shaded area shows the region where it is enclosed in sample space S but does not include the subset B.
Hence it is the complement of B. (A)
If event B is a subset of the sample space S, hence the area represented by the shaded part is complement of B
Set theoryThe set is a collection of members and things.
According to the venn diagram given, the whole set including the set B is the universal set.
The part not shaded is not part of the universal set, hence, we name them the complement of a set.
If event B is a subset of the sample space S, hence the area represented by the shaded part is complement of B
Learn more on set here: https://brainly.com/question/2166579
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What is the value of x in the figure?*
Answer:
x=25Step-by-step explanation:
according to the question
the equation is
130+2x=180
2x=180-130
2x=50
x=25
Find the sales tax.
Sales Tax
Selling Price Rate of Sales Tax Sales Tax
$60.00
6%
?
The sales tax is $
$3.60 is the sales tax
After tax the price is $63.60
Answer
$63.60
Step-by-step explanation:
6% of 60 = 3.60
3.60+ 60= 63.60
y = 4x + 10 y = 3x + 15
Answer:
-(135/31), 60/31
Step-by-step explanation:
y=60/31
x=-(135/31)
(40 points) !!! Super easy math question
Given the equation y = 5x - 1, what are the intercepts?
options in screenshot
Answer:
D
Step-by-step explanation:
*WILLL GIVE BRAINIEST TO COORECT RESPONCE*
how do i do this?
what is the answer?
Answer:
line mo
Step-by-step explanation:
Because the triangle are congrument
RST and MNO are the triangle
RT is a line in the RST triqangle
it is equal to the MO line in MNO
Suppose y varies directly as x, and y = 16 when x = 8. Find y when x = 16. Write the numeric answers only.
Answer:
k= 2
y = 32
Step-by-step explanation:
y is inversely proportional to x
y = 16, x = 8
find y when x = 16
k= 2 & y = 32
A model rocket is launched in the air. The quadratic function is modeled by the equation y = - 16x ^ 2 + 32x where is measuring time and y is the height of the model rocket. What is the max height the rocket reaches?
Answer:
The maximum height the rocket reaches is 16.
Step-by-step explanation:
You know that a model rocket is launched in the air and the quadratic function is modeled by the equation y = -16*x² + 32*x where x is measuring time and y is the height of the model rocket.
A quadratic function or function of the second degree is a polynomial function defined by:
y= a*x² + b*x + c
A quadratic function has a maximum or a minimum and the vertex formula is used to get the highest or lowest value of the function. When a> 0, the vertex of the parabola is at the bottom of it, being a minimum (that is, the parabola opens "upward"), and when a <0 the vertex is at the top , being a maximum (that is, the parable opens "downward").
The value of the vertex on the x-axis can be calculated with the expression [tex]x=\frac{-b}{2*a}[/tex]
The value of the vertex on the y axis must be obtained by substituting the value of the vertex on the x axis in the function y= a*x² + b*x + c
In this case, a= -16, b=32 and c=0. Since a<0 the vertex will indicate the maximum of the function.
The value of the vertex on the x-axis is [tex]x=\frac{-32}{2*(-16)}=1[/tex]
The value of the vertex on the y axis is:
y = -16*1² + 32*1
Solving:
y= -16*1 +32
y= -16 +32
y=16
The maximum height the rocket reaches is 16.
Find the missing side lengths . Leave your answers as radicals in simplest form.
Does anybody knows how to do it cause I don’t so can y’all plz help me
Step-by-step explanation:
Question 9:
Hypotenuse = 7
Leg = Hypotenuse / √2 = 7/√2 = 7√2 / 2.
Therefore x = y = 7√2 / 2.
Question 10:
Leg = 10
Since x is also a Leg, x = 10.
Hypotenuse = Leg * √2 = 10√2. => y = 10√2.
Question 11:
Leg = 7
Since x is also a Leg, x = 7.
Hypotenuse = Leg * √2 = 7√2, => y = 7√2.
Quinten paid 4.16 for a pound of taffy. If his sister purchases 3 ounces of the same candy, how much will she pay?
OMG HELP OMG HELP OMG HELP
Answer:
a
Step-by-step explanation:
Answer:
D
Step-by-step explanation:
3 bouquets of 3$ is 3*3 = 3^2
4 bouquets of 2$ = 2 * 4
What is the y-intercept of y = -3x
Answer:
0
Step-by-step explanation:
The y-intercept of y = -3x is zero.
Answer:
0
General Formulas and Concepts:
Algebra I
Slope-Intercept Form: y = mx + b
m - slope b - y-interceptStep-by-step explanation:
Step 1: Define
y = -3x
Step 2: Break Function
Identify Parts
Slope m = -3
y-intercept b = 0
*We assume that if the variable isn't there, it is 0 or being multiplied by 0.
Find the zeros for 2x^2
- 24 = 26. What is the positive value of x?
Answer:
The zeroes are -1 and 13
Positive value: [tex]x = 13[/tex]
Step-by-step explanation:
Given
[tex]2x^2 - 24x = 26[/tex]
Solving (a): The zeros
[tex]2x^2 - 24x = 26[/tex]
Subtract 26 from both sides
[tex]2x^2 - 24x - 26= 26-26[/tex]
[tex]2x^2 - 24x - 26= 0[/tex]
Divide through by 2
[tex]\frac{1}{2}(2x^2 - 24x - 26) = \frac{1}{2} * 0[/tex]
[tex]x^2 - 12x - 13 = 0[/tex]
Expand
[tex]x^2 - 13x + x - 13 = 0[/tex]
Factorize:
[tex]x(x-13)+1(x-13)=0[/tex]
[tex](x+1)(x-13)=0[/tex]
Split:
[tex]x +1 =0\ or\ x-13=0[/tex]
[tex]x =-1\ or\ x=13[/tex]
Hence, the zeroes are -1 and 13
Solving (b): The positive value of x
In (a) above:
[tex]x =-1\ or\ x=13[/tex]
The positive value is:
[tex]x = 13[/tex]
use the number line to find the absolue value of 7 (A -7, (B 0, (C 7, (D 14
Answer:
Can you put a number line in the picture?
Step-by-step explanation:
That would really help
Answer:
I think its C but without the number line a cant tell.
Step-by-step explanation:
Please please help please
Answer:
AB = BC = 4[tex]\sqrt{2}[/tex]
Step-by-step explanation:
This is a 45-45-90 triangle (right isosceles). This means that the side ratio is
1:1:[tex]\sqrt{2}[/tex], where AC is sqrt 2, and AB and BC are 1. Now, we need to plug this into our ratio. If sqrt 2 is 8, then 1 is x.
8/[tex]\sqrt{2}[/tex] = x/1 = x
x = 8/[tex]\sqrt{2}[/tex] = 4[tex]\sqrt{2}[/tex] (rationalized)
AB and BC are both 4 * sqrt 2
The answer is AB = BC = 4√2
a^2y+a^3 for a=-1.5 and y = -8.5
Step-by-step explanation:
I think it will be 1.7
i am not sure
A family spends $520 every month on food if the family's income is 3 200 each month what percent of the inco.E is spent on food
Answer:
16.25% was spent on food
Step-by-step explanation:
Step one
given data
A family spends $520 every month on food
The family's income is $3200 Monthly
Required
We want to find the percentage of the income spent on food only
Step two
percentage spent on food= amount spent on food/income*100
percentage spent on food= 520/3200*100
percentage spent on food= 0.1625*100
percentage spent on food= 16.25%
=16.25%
The midpoint of UV is point W. What are the
coordinates of point V?
Can anyone help me with this ?
Answer:
D
Step-by-step explanation:
The 1220 feet is positive because the plane is above her.
The 14 feet is negative because the tree is below her.
Because you're comparing distances, you need the absolute value of both distances.
The absolute value of 1220 is 1220 and the absolute value of -14 is 14, so the absolute value of 1220 is greater than the absolute value of -14. The answer is D.
ILL GIVE BRAINLIEST!!!!!
For questions 3 – 5, use the FOIL method to find the product of the binomials.
3. (2x + 3)(x + 1) 4. (x – 5)(3x + 2) 5. (x2 + 2)(5x + 1)
Answer:
The answer to question 3 is : 2x^2 + 5x + 3
Step-by-step explanation:
The FOIL method is multiplying the first variables, the outside variables, the inside variables and the last variables.
(2x + 3)(x + 1)
F = 2x times x = 2x^2
O = 2x times 1 = 2x
I = 3 times x = 3x
L = 3 times 1 = 3
2x^2 + 5x + 3
I'll leave the rest to you. You got this!
Answer:
1. 2x^2+5x+3 2.3x^2-13x-10 3.10^2+12x+2
Step-by-step explanation:
trust
and plz mark brainliest
Point D is the midpoint of AB.
Is this information enough to prove ACD - EBD?
Answer:
yes
Step-by-step explanation:
By ASA similarity;
<b=<a
<c=<e
DE=DC
just tell me which one.
B
NEED HELP ASAP Angles A and B are
supplementary. If
MLB-IoTº, what is
the M
(The pic is of the question)
Answer:
79
Step-by-step explanation:
Supplementary are angles that will add up to 180. So to find the missing angle we do 180 - 101 and get 79.
hope this helps (:
which expression shows the relationship between the ratios 1 to 2 and 3 to 6
Answer:help me
Step-by-step explanation:
Answer:
x3
Step-by-step explanation:
Which of the following is an equation of the line through (11, –3) and (7, 9)?
Answer:
y = -3x + 30.
Step-by-step explanation:
The slope of line = (9- (-3)) / (7 - 11)
= 12/-4
= -3.
We use the point-slope form of a straight line:
y - y1 = m(x - x1) where m = slope = -3 and (x1, y1) = (7, 9)
y - 9 = -3(x - 7)
y - 9 = -3x + 21
y = -3x + 21 + 9
y = -3x + 30.
You haven't supplied a list of possible answers so the correct answer might not be in the above form but will be equivalent to it.
PLEASEEEEEEEE HELP MEEEEE
Answer:
11
Step-by-step explanation:
hope that helps out :)
Step-by-step explanation:
by collecting like terms =
7y - 12y = -38 - 17
-5y = - 55
by dividing both sides by -5
-5y/-5 = -55/-5
y = 11
 help pleaseeeeee !!!! i’ll give brainliest !
please help me please will give brainliest
do only 23 ,25,
by factoring
9514 1404 393
Answer:
23) x = ±3i, ±√2
26) x = 4/3, (-2/3)(1 ± i√3)
Step-by-step explanation:
23) Put in standard form to make factoring easier.
x^4 +7x^2 -18 = 0
(x^2 +9)(x^2 -2) = 0 . . . . factors in integers
Using the factoring of the difference of squares, you can continue to get linear factors in complex and irrational numbers:
(x -3i)(x +3i)(x -√2)(x +√2) = 0
x = ±3i, ±√2
___
26) This will be the difference of cubes after you remove the common factor.
81x^3 -192 = 0
3(27x^3 -64) = 0
(3x -4)(9x^2 +12x +16) = 0 . . . . . factor the difference of cubes
The complex roots of the quadratic can be found using the quadratic formula.
x = (-12 ±√(12^2 -4(9)(16)))/(2(9)) = (-12 ±√-432)/18 = -2/3 ± √(-4/3)
Then the three solutions to the equation are ...
x = 4/3, (-2/3)(1 ± i√3)