Solving System equations using substitution
5x+2y=21
-x-y=-9
Can someone help solve this
Answer:
x = 1
Step-by-step explanation:
-5x+2(7x)=9
-5x+14x=9
9x=9
x=1
also you can use math_way to help solve this
Have a great day!
Find f(-2) for the function f (x) = 3x^2-2x+7
Answer:
23
Step-by-step explanation:
plug -2 in for x then solve
PLZ HELP WILL MARK BRAINLIEST
The lenght of one side rectangle is x cm the length of longer side is (X+4) cm if the rectangle has the peimeter of 48 cm find the area?
Answer: 140cm²
Step-by-step explanation:
Perimeter of a rectangle is calculated as: = 2(length + width)
where,
Length = x+4
Width = x
Therefore, perimeter = 2(length + width)
2(x + x+4) = 48
2(2x + 4) = 48
4x + 8 = 48
4x = 48 - 8.
4x = 40
x = 40/4
x = 10cm
The other side = x+4 = 10+4 = 14cm
Area = length × width
Area = 10cm × 14cm
Area = 140cm²
Please help!! Im super confused
Answer:
Outlier is 3 points.
Step-by-step explanation:
Because it stands out from the other data points!
There are 11 kites in the sky, and 6 of those kites are striped. What fraction of
the kites are striped?
Answer:
no
Step-by-step explanation: yes
You and your friends were playing basketball last week. You were short a
player, so your younger sister joined the game. She crushed it scoring 12 shots for 28 points. How many 2 and 3 point baskets did she score?
Write a solution to the sister's basketball game.
Answer:
there are multiple solutions to this but one is...
3+3+3+3+2+2+2+3+2+2+3
Step-by-step explanation:
you can create other solutions by taking both 2 and 3 consecitvly and adding them until you get 28.
Answer:
She made eight 2 pointers
She made four 3 pointers
Step-by-step explanation:
2x + 3y = 28
x + y = 12 Multiply this equation by 2
2x + 2y =24
Write the first and third equations underneath each other,
2x + 3y = 28
2x + 2y = 24 Subtract.
y = 4
x + y = 12
x + 4 = 12 Subtract 4 from each side
- 4 -4
x = 8
Kirsten has a bag of 20 blocks. The probability of selecting a green block from the bag is 3 over 5. How many of the blocks in Kirsten's bag are green?
hi
3/5 *20= 60/5 = 12
12 block are green
You want to create a scale model for a building that will be 120feet tall and 40 feet wide. If you make the model 6 feet tall, how wide should it be?
Given:
Length of the building = 120 feet
Width of the building = 40 feet
Length of the model = 6 feet
To find:
Width of the model.
Solution:
The scale model similar to the original figure and the corresponding sides of the similar figures are proportional.
Let x be the width of the building.
[tex]\dfrac{\text{Length of the building}}{\text{Length of the model}}=\dfrac{\text{Width of the building}}{\text{Width of the model}}[/tex]
[tex]\dfrac{120}{6}=\dfrac{40}{x}[/tex]
[tex]20=\dfrac{40}{x}[/tex]
[tex]x=\dfrac{40}{20}[/tex]
[tex]x=2[/tex]
Therefore, the width of the model is 2 feet.
Write the number 560 in scientific notation.
Answer:
5.6 x 10 2
Step-by-step explanation:
Answer:
5.6 × [tex]10^{2}[/tex] - scientific notation
hope this answer helps you.....
2) 24, 12, 10, 15, 10, 22, 12 mean: _________ median: _________ mode: ________ range: ________
Stella needed to get her computer fixed. She took it to the repair store. The technician
at the store worked on the computer for 3.25 hours and charged her $75 for parts.
The total was $188.75. What was the cost of labor, per hour?
9514 1404 393
Answer:
$35 per hour
Step-by-step explanation:
The total charge is the sum of costs of parts and labor. If h is the cost of a labor hour, then we have ...
188.75 = 75 + 3.25h
113.75 = 3.25h . . . . . . . . subtract 75
113.75/3.25 = h = 35 . . . divide by the coefficient of h
The cost of labor, per hour, is $35.
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NATION
The function g(x) = x2 + 3. The function f(x) = g(x + 2).
The function f(x) is shifted horizontally
a bakery reduced the price of their cakes from $35 to $28 each
Answer:its actually 20%
Step-by-step explanation:
I looked it up
PLS HELP PLSSS HELP!
how to graph y=2x-4
At the beginning of the week, a puppy weighed 5 1/4 pound. During the week the puppy gained another 8 pounds.
how much does the puppy weigh, in pounds, at the end of the week
The answer would be 13.25 :)).
Answer:
5 3/4
Step-by-step explanation:
Please help.
Is algebra.
PLEASE HELP NO LINKS OR FILES.
I don't want links.
Answer:
points srry
Step-by-step explanation:
Solve :p (algebra)
3+5
Answer:
8...
Step-by-step explanation:
it's all on the picture please
Events A and B are mutually exclusive. Suppose event A occurs with probability 0.36 and event B occurs with probability 0.31. Compute the following. (If necessary, consult a list of formulas.) (a) Compute the probability that A does not occur or B does not occur (or both). 0. x 5 ? (b) Compute the probability that either A occurs without B occurring or A and B both occur. 0.36
Answer:
Events A and B are dependent
Step-by-step explanation:
If A and B are two events such as A and B are dependent then
P(A∩B) P(A) P(B)
An event A will occur with probability 0.4 that is
An event B will occur with probability 0.6 that is
The probability that both A and B will occur is 0.20 that is P(A∩B) = 0.20
Therefore,
P(A∩B) P(A) P(B)
So,
events A and B are dependent
In right triangle ABC, m∠ B ≠ m∠ C. Let sin B = r and cos B = s.
What is sin C – cos C?
Draw and label a diagram.
sin A = CB / AB
cos B = CB / AB
sin A = cos B
2x - 1.3 = 5x
Can you solve for x and answer?
The value of expression sin C - cos C is,
⇒ r - s
What is mean by Triangle?Triangle is a three sided polygon, which has three vertices and three angles and which has sum 180 degrees.
Given that;
In right triangle ABC,
⇒ m∠ B ≠ m∠ C.
Let us assume that,
⇒ sin B = r
And, cos B = s.
Now, We get;
sin B = rh / h
= r
And, cos B = sh / h
= s
Hence, We can formulate;
sin C = sh / h = s
cos C = rh / h = r
Thus, We get;
⇒ sin C - cos C
⇒ r - s
Therefore, The value of expression sin C - cos C is,
⇒ r - s
Learn more about the triangle visit;
brainly.com/question/1058720
#SPJ2
Segment FG begins at point F(-2, 4) and ends at point G(-2, -3). The segment is translated 3 units left and 2 units up, then reflected across the y-axis to form segment F'G'.How many units long is segment F'G'?
Answer:
[tex]F'G' = 7[/tex]
Step-by-step explanation:
Given
[tex]F = (-2,4)[/tex]
[tex]G = (-2,-3)[/tex]
Required
Distance of F'G'
The transformation that give rise to F'G' from FG are:
TranslationReflectionThe above transformations are referred to as rigid transformation, and as such the side lengths remain unchanged.
i.e.
[tex]F'G' = FG[/tex]
Calculating FG, we have:
[tex]FG = \sqrt{(x_1 - x_2)^2 + (y_1 - y_2)^2}[/tex]
Where:
[tex]F = (-2,4)[/tex] --- [tex](x_1,y_1)[/tex]
[tex]G = (-2,-3)[/tex] --- [tex](x_2,y_2)[/tex]
[tex]FG = \sqrt{(-2 - -2)^2 + (4 - -3)^2}[/tex]
[tex]FG = \sqrt{(0)^2 + (7)^2}[/tex]
[tex]FG = \sqrt{0 + 49}[/tex]
[tex]FG = \sqrt{49}[/tex]
Take positive square root
[tex]FG = 7[/tex]
Recall that:
[tex]F'G' = FG[/tex]
[tex]F'G' = 7[/tex]
1-point free throw 2-point field goal he made 35 shots he scored 62 points how many of each shot does he make in 1 minute write the two equations for the problem
Answer:
x + y = 35 equation 1
x + 2y = 62 equation 2
He made 8 1 point free throw
He made 27 2 point field goal
Step-by-step explanation:
let x = 1 point free throw
y = 2 point field goal
two equations can be derived from the question
x + y = 35 equation 1
x + 2y = 62 equation 2
Subtract equation 1 from 2
y = 27
Substitute for x in equation 1
x = 35 - 27 = 8
He made 8 1 point free throw
He made 27 2 point field goal
We can divide x^3 + x^2 + 3x – 4 by x^2 + 1 using synthetic division.
true or false?
Find the percent of increase from 58 pounds to 83 pounds. Round to the nearest tenth of a percent if necessary.
Answer:
43%
Step-by-step explanation:
Orinally the decimal percentage is 43.1034% so we just round to 43%
Answer:
43.1`
Step-by-step explanation:
my friend helped me :)
Please read short story and answer questions **50 points
Answer:
Step-by-step explanation:
A find the main idea
M -1
N -2
B -3
1- C
2-B
3-A
4-C
5- C
Hello, I Am BrotherEye
Answer:
Is This Question Still Require My Attention?
Step-by-step explanation:
PLEASE HELP AND EXPLAIN HOW TO DO THIS
Find Sn for the given geometric series.
1=0.11, 5=895.956875, =9.5
Answer:
1001.35
Step-by-step explanation:
Assuming
n
=
5
for which sum to be found.
We know sum of geometric series up to
n
th term is
S
n
=
a
1
⋅
r
n
−
1
r
−
1
Here
a
1
=
0.11
,
r
=
9.5
,
n
=
5
∴
S
5
=
a
1
⋅
r
5
−
1
r
−
1
=
0.11
⋅
9.5
5
−
1
9.5
−
1
≈
1001.35
[Ans]
Help for 15 points !!!!!!
HELP!! Im Working on homework and not sure how to do this and its due tomorrow can anyone help me!! Btw it’s geometry!
Answer:
1. 7.3
2. 33.3
3. 9.2
4.31.9
5.25.6
6.11
7.42°
8.64°
9.13°
10. 51°
Step-by-step explanation:
Hope this helps.