Answer:
C
Step-by-step explanation:
x + 2y = 21
4x + y = 21
Multiply the second equation by -2 to get:
-8x - 2y= -42 {Add this to the original equation; y's will be eliminated}
+ x + 2y = 21
-7x = -21
x = 3
see if y = 9 works . . .
3 + 2(9) = 21 and it does
The table below shows the possible outcomes of rolling a six-sided number cube and flipping a coin.
what is the probability of getting a number less than 3 and tails
A. 1/12
B. 1/6
C.1/4
D. 1/3
Answer:
c is the correct answer but i am not sure
The Wildcats soccer team won 85% of their matches last season. If the team played 40 matches during the entire season, how many matches did they win?
Answer:
wap by cardi
Step-by-step explanation:
2+3
For what value of a does
9
(3)"
?
-
73
3
1
Answer:
3
Step-by-step explanation:
3 × 3 = 9
( 3 + 3 + 3 = 9 )
______________________________________
find the value of using property of 3295×999+3295 Solution
Answer:
3295000
Step-by-step explanation:
3295×999+3295
3295 * 999 = 3291705
3295×999+3295
3295 * 999 + 3295
3291705 + 3295 = 3295000
Need help!!!!!!!!!!!! Struggling
A = 28.26 sq yds
Step-by-step explanation:
diameter (D) = 6 yds
radius (r) = D/2 = 3 yds
A = πr^2
= (3.14)(3 yds)^2
= 28.26 sq. yds
Find the solution to the system of equations y=1/2x +1, y= -x-2
Answer:
answer is (1,0)
Step-by-step explanation:
Which equation has a graph that lies entirely above the x-axis?
Answer: c
Step-by-step explanation:
y=(x-7)^2+7
.................help....................me..........
Answer:
10m = height
Step-by-step explanation:
Volume of a Cylinder = πr²(h), where r is the radius and h is the heigh of the circle, therefore;
=> 1000π = π(10)²(h)
=> 1000π = 100π(h)
=> 1000π/100π = h
=> 10 = h
Hope this helps!
24-67-88+77-77+78-55+888
Answer:
780
Step-by-step explanation:
24 - 67 = - 43
- 43 - 88 = - 131
- 131 + 77 - 77 = - 131
- 131 + 78 = - 53
- 53 - 55 = - 108
- 108 + 888 = 780
Which of the following is equivalent to 24/80
Answer:
0.3
Step-by-step explanation:
speeeeeeeeeeeddddddddddddddddd (might give brainlest
Answer:
6
Step-by-step explanation:
6 times 6 is 36 and the formula for area is
lxw(Length times width)
Please help me I would appreciate it a lot
Answer:
Juan can consume 2.22 calories per day
Step-by-step explanation:
[tex]68.820 \div 31 \: day \: month \: \\ \\ = 2.22[/tex]
Plz help me plzzz thank you if you do
=========================================================
Explanation:
We have c^2 + 2c, where 2 is the coefficient of the c term
This halves to 2/2 = 1, and then we square that to get 1^2 = 1.
Adding 1 to c^2+2c will result in c^2+2c+1, allowing it to be factored. This is because it's a perfect square
The rule we use is
(a+b)^2 = a^2 + 2ab + b^2
can someone help me find x
Answer:
x = 5
Step-by-step explanation:
Since this shape is a quadrilateral, the sum of the interior angles is 360.
Equation:
81 + 20x - 16 + 15x + 30 + 16x + 10 = 360
51x + 105 = 360
51x = 360 - 105
51x = 255
x = 5
The point (8, 7) is reflected over the x-axis. What quadrant is the new point located in? A. Quadrant I
B.Quadrant II
C.Quadrant III
D.Quadrant IV
Answer:
.quadrant 4 is the new point locatef
Solve 4(x - 3) - 2(x - 1) > 0.
OXIX > 2)
OxIx>7)
Oxlx> 14)
O x 1 x>5)
Answer:
4(x - 3) - 2(x - 1) > 0
(4x - 12) - 2x + 2) > 0
4x - 2x - 12 + 2 > 0
2x - 10 > 0
2x > 10
x > 10/2
x > 5
Amplitude and Period
Determine the amplitude of the function y = sin x from the graph shown below:
a. 2
b. 1
c. 3
d. 4
Please select the best answer from the choices provided
Answer:
A. 2
Step-by-step explanation:
I calculated it logically
which expression represents the value of pi?
Two lines and a ray intersect to form five angles. The angles are numbered in the diagram 1 through 5.
If the measure of ∠4 is 55°, what is the measure of ∠2?
Answer:
[tex]\angle 2 =145^\circ[/tex]
Step-by-step explanation:
Given
[tex]\angle 4 = 55^\circ[/tex]
Required
Find [tex]\angle 2[/tex]
From the attached image, we have:
[tex]\angle 5 = 90[/tex] --- right angle
So, we have:
[tex]\angle 5 +\angle 4 = 90 + \angle 4[/tex]
Substitute: [tex]\angle 4 = 55^\circ[/tex]
[tex]\angle 5 +\angle 4 = 90 + 55[/tex]
[tex]\angle 5 +\angle 4 = 145[/tex]
To solve for [tex]\angle 2[/tex], we have:
[tex]\angle 2 =\angle 5 +\angle 4[/tex] --- Vertically opposite angles
So:
[tex]\angle 2 =145^\circ[/tex]
Find the original price of a pair of shoes if the sale price is $48 after a 60% discount.
Answer:
$68.80
Step-by-step explanation:
First you need to find 60% of 48 which is 28.8. Then you add the 28.8 and 48 to get a total of $68.80.
Hope this helped :)
help me! the answer is not unit
Find the median of the data in the dot plot below.
Answer:
The median is 6.
Step-by-step explanation:
To find the median, put the numbers in order then find the middle number. In this data set, there are 2 numbers, so you add those 2 and divide by 2.
5+7 equals 12. 12 divided by 2 is 6.
V+2/v + 4/3v =11
How to solve this ?
Answer:
0.189
4.525
Step-by-step explanation:
v/1 + 2/v + 4v/3 = 11
we can eliminate denominators if we distribute 3v to each term:
3v(v/1 + 2/v + 4v/3) = 3v(11)
3v² + 6 + 4v² = 33v
7v² - 33v + 6 = 0
factor this trinomial:
there are no factors of 6 that would add to -33 so we can use the quadratic formula to solve: (-b ± √b²-4ac) / 2a
a = 7
b = -33
c = 6
[33 ± √(-33)² - 4(7)(6)] / 2(7)
(33 ± √1089 - 168) / 14
(33 ± √921) / 14
(33 ± 30.35) / 14
(33+30.35) / 14 = 4.525
(33-30.35) / 14 = 0.189
Simplify (5m - 4)2 using the square of a binomial formula.
A) 5m2 - 20m - 4
B) 25m2 – 40m + 16
C) 25m2 + 40m + 16
D) 5m2 – 40m + 4
Answer:
[tex]25m^{2} -40m+16[/tex]
Step-by-step explanation:
Rewrite (5m−4)^2 as (5m−4)(5m−4).
Expand (5m−4)(5m−4) using the FOIL Method.
[tex]25m^{2} -40m+16[/tex]
The function g(x) =x^2 is transformed to obtain function h:
h(x) = g(x) + 1.
Which statement describes how the graph of h is different from the graph of g?
OA.
The graph of his the graph of g horizontally shifted right 1 unit.
O B. The graph of his the graph of g vertically shifted up 1 unit.
Oc. The graph of h is the graph of g horizontally shifted left 1 unit.
OD.
The graph of h is the graph of g vertically shifted down 1 unit.
Answer:
B. The graph of his the graph of g vertically shifted up 1 unit.
Step-by-step explanation:
[tex]Given:-[/tex]
[tex]g(x)=x^2[/tex]
[tex]h(x)=g(x)+1[/tex]
[tex]so,h(x)=x^2+1[/tex]
[tex]f(x)=x^2[/tex]
[tex]vertical ~ shift~ up ~1 ~ unit[/tex]
----------------------------
hope it helps...
have a great day!!
The sum of two numbers is 32. One number is 10 more than the other. Find the numbers
Answer:
12 and 10
Step-by-step explanation:
Answer:
11 and 21
Step-by-step explanation:
Let the first number equal x. If the first number, the second number is ten more, and can represented as x + 10. Now, the sum is 32, so we can add the two numbers to get 32:
x + x + 10 = 32
2x + 10 = 32
2x = 22
x = 11
If the first number 11, the second number is 10 more, and therefore is 21.
Find the perimeter of the rectangle
Answer:
I got 21 ft
Step-by-step explanation:
I converted all of the measurements that were shown in feet to inches (there are 12 inches in 1 foot), then added all of the sides together. Once I got that answer, I converted the inches back to feet by dividing the sum of the sides by 12.
Solve the system of equations.
9x+11y=2
3x+4y=4
Answer:
X= -12 Y=10
Step-by-step explanation:
The solution is, Solve of the system of equations.
9x+11y=2 & 3x+4y=4 is, x = -12 & y =10.
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. For instance, 3x + 5 = 14 is an equation, in which 3x + 5 and 14 are two expressions separated by an 'equal' sign.
here, we have,
given that, the system of equations.
9x+11y=2 .......(1)
3x+4y=4 ...........(2)
now, for solving, multiply (2) by 3 & subtract from (1),
we get,
9x + 11y = 2
9x + 12y = 12
---------------------
y= 10
from (1), we get, x = -12
Hence, The solution is, Solve of the system of equations.
9x+11y=2 & 3x+4y=4 is, x = -12 & y =10.
To learn more on equation click:
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Please answer number 7 I’ll give brainliest thanks!
1. Which function represents exponential decay?
y= 4^0.3t
y= 7^-t
y= (1/3)^-t
y= 1.5^2t
Justify your response.
Answer:
y= 7^-t
Step-by-step explanation:
Equation for exponential decay:
An equation represents exponential decay if a term between 0 and 1 is elevated to the independent variable.
In this question:
First option 4 is elevated, so not exponential decay.
Second option:
[tex]7^{-t} = \frac{1}{7^t} = (\frac{1}{7})^{t}[/tex]
[tex]0 < \frac{1}{7} < 1[/tex], thus, the second option represents exponential decay.