Answer:
f(-1) = 1
Step-by-step explanation:
f(-1) just means you plug -1 into the equation:
-3x + 2x
-3(-1) + 2(-1)
3 - 2
1
Hopefully this helps!
Brainliest please?
Help help help help help help help help help
Answer:
subtract 20 from both sides
Step-by-step explanation:
1. To find the answer, let's actually try solving the equation first and find the 2nd step.
2. (Solving)
Step 1: Distribute 2 to each term.
[tex](2)(x)+(2)(10)=60[/tex] [tex]2x + 20 = 60[/tex]Step 2: Subtract 20 from both sides.
[tex]2x + 20 - 20 = 60 - 20[/tex] [tex]2x = 40[/tex]3. Since we got that the second step was "subtract 20 from both sides," the answer is subtract 20 from both sides.
4r – 4s + 4t=-4
4r +5 - 2t = 5
-3r - 3s – 4t=-16
Use elimination or substitution to solve the systems.
(1,-3,-1)
(1,3,1)
(-1,3,1)
Answer:
1,3,1
Step-by-step explanation:
Simplify: |7 – 9| + (7 – 9)^2
Answer:
6
Step-by-step explanation:
Following PEMDAS ( parentheses, exponents, multiplication, division, addition, subtraction)
| 7 - 9 | + ( 7 - 9 ) ^ 2
| 7 - 9 | + -2 ^ 2
| 7 - 9 | + ( -2 x -2 )
| 7 - 9 | + 4
| -2 | + 4
2 + 4
6
How do you line graph Y equals 7X -8
Answer:
x
y
0
−
8
8
7
0
Graph the line using the slope and the y-intercept, or the points.
Slope:
7
y-intercept:
(
0
,
−
8
)
Step-by-step explanation:
MARK ME AS BRAINLIEST
One example of a mathematical model is an equation that describes the relationship between two quantities.
a. True
b. False
Answer:
True
Step-by-step explanation:
Linear equations are often used to model the relationship between the dependent variable that is affected by changes in the independent variable.
For instance, the linear function: f(x) = 2x + 3, where f(x) is the output (dependent variable) depends on the value of the input, x (independent variable).
Therefore, the correct answer is True.
How many solutions does this equation have?
9p + 5 = 5 + 9p
A tree grew from a height of 6 feet to 15 feet. By what percent did its height increase?
Answer:
It increased by 150%
Step-by-step explanation:
In how many ways can a committee
of 5 men and 3 women be selected
from 9 men and 7 women ?
Answer：
use the same method
Step-by-step explanation:
Men=5
Women=3
Available Strength:
Men=7
Women=6
Objective:Finding no of such committees where particular 2 women are never together.
So initially ,Total possible number of commitee=7c5×6c3=420.
Now we need to find total committes where two particular women say(Sita and Gita ) are never together.
Approach—->
As the commitee requires 5 men and 3 women.
Let us first find number of committees where Sita and Gita are always together.
Hence we reserve 2 women seats for them.
Now we need one women out of remaining 4 women.
So possible number of such commitees 7c5×4c1.
=84.
Hence number of committees where Sita and Gita are never together
=420–84
=336.
matt is buying jeans and sweaters for his younger brothers. each pair of jeans will cost 22.50 and each sweater will cost 12.50. if matt spends a total of $200 at the clothing store and buys 12 articles of clothing, how many pairs of jeans and how many sweaters did he buy? you must create and solve the system for points
Answer: 220
Step-by-step explanation:
A- 22.50 x 12 = 270
B- 12.50 x 12 = 150
C- 270 + 150 - 200 = 220
ANSWER- 220
The image point of A after a translation right 4 units and up 4 units is the point B(-5, -1). Determine the coordinates of the pre-image point A.
Answer:
(-9, -5)
Step-by-step explanation:
You have to imagine where it came from so the only way to find that is by reversing the translation. Instead of adding 4, we need to subtract 4 left and down. Once you did the inverse you receive your answer.
Alex wrote the expanded form for the number 165.038 as “100 + 60 + 5 + 30 + 8.” Was he correct? If not, give the correct expanded form. P.S I really need the answer asap!
Answer:
no he is not correct.
the correct expanded form: 100+60+5+0.0+0.30+0.008
Step-by-step explanation:
Hope this helps also i learned about this r u in 5th grade
Alex's expanded form for the number 165.038 is not correct. The correct expanded form for the number 165.038 is 100 + 60 + 5 + 0.03 + 0.008.
The number 165.038 can be broken down into its individual place values:
Hundreds: 100
Tens: 60 (6 tens)
Ones: 5
Tenths: 0.03 (3 hundredths)
Hundredths: 0.008 (8 thousandths)
So, the correct expanded form for the number 165.038 is:
100 + 60 + 5 + 0.03 + 0.008
Hence, Alex's expanded form for the number 165.038 is incorrect. The correct expanded form is: 100 + 60 + 5 + 0.03 + 0.008.
To learn more on Number system click:
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Can someone pls help meee
_________
[tex] \: [/tex]
[tex] \triangle \sf \: abc = \triangle \sf \: xyz[/tex]
Soo :
Ab = Xy Bc = Yz Ca = ZxTriangle in the picture.
hedllloopp mee and u get brainlist!!!
Answer:
15 cm (make sure to not put value with answer (cm))
Step-by-step explanation:
9x9 = 81
12x12 = 144
81+144 = 225
[tex]\sqrt{225}[/tex] = 15
Answer:
15
Step-by-step explanation:
9^2 + 12^2 = C^2
81 + 144 = C^2
225 = C^2
15 = C
Hope this helps! Pls give brainliest!
WILL GIVE BRAINLIEST. a. determine a rule for the table B. complete the table. for input for 4 and n.
Answer:
WHAT TYPE OF MATH LIKE WHAT LESSON
Step-by-step explanation:
How do you solve this type of problem?
Thanks!
Carly withdraws $18 from her bank account. Which number line represents this amount?
-20 -15 -10 -5 0 5 10 15 20,
10 15 20 -20 -15 -10 -5 0 5
10 15 20 -20 -15 -10 -5 0 5,
-20 -15 -10 -5 05 10 15 20.
what is the equivalent value
1/2×6
Answer:
3
Step-by-step explanation:
Answer:
3Step-by-step explanation:
what is the equivalent value
1/2×6?
1/2 * 6 =
3
Can someone help me please
Step-by-step explanation:
5⁴×5² = 5⁶
10⁶/10³ = 10³
so, we have 5⁶/10³ = 15.625
and in scientific notation we have to write the first digit (which is not 0) in front of the decimal point, and the following digits of the number as pairings after the decimal point, and then indicate a multiplication with a power of 10 to tell us the right position of the decimal point in the plain number.
so, 15.625 as plain number is
1.5625 × 10¹ in scientific notation.
therefore option 1 is correct.
PLEASE HELP WILL MARK BRAINLIEST NO FAKE ANSWERS
Represent algebraically
1. 3n - 5
Five less = -5
Than thrice (three times) a number = 3n
2. 7n + 3
The product of 7 and a number = 7n
Added to 3 = + 3
3. 1/2(3n - 4)
One-half = 1/2
The difference of thrice a number and 4 = 3n - 4
Hope this helps!! :)
Answer:
1. 5-x
2. (7*x)+x
3. 1/2(3x-4)
The perimeter of the rectangle below is 65 inches.
a. What is the value of x?
b. What are the dimensions of the rectangle?
Answer:
A :-) Given -
perimeter = 65 inches
Side ‘a’ = 2x
Side ‘b’ = 3 1 by 4x + 1
Solution -
Perimeter = 65
= a + b = 65
= 2x + 3 1 by 4x + 1 = 65
( 3 1 by 4 = 4 x 3 + 1 = 12 + 1 by 4
= 13 by 4 )
= 2x + 13 by 4x + 1 = 65
= 2x + 13 by 4x = 65 - 1
= 2x + 13 by 4x = 64
= 15 by 4 x = 64
= x = 64 x 4 by 15
= x = 256 by 15
= x = 17.06
.:. The value of x = 17.06.
Fill in the missing number. 40% of = 800
Answer:
40% of 800 is 320
Step-by-step explanation:
0.40×800=320
Solve for x. 3(x−7)=6(x−10) Enter your answer in the box. x =
Answer:
X = 13
Step-by-step explanation:
Isolate the variable by dividing each side by factors that don't contain the variable.
Pablo's family began their trip with a full tank of gas in their car. They drove 384.1 miles and
stopped to fill their tank back up with gas. It took 14.2 gallons of gas to fill up their tank.
About how many miles per gallon of gasoline did they average on their trip?
Work Shown:
(384.1 miles)/(14.2 gallons) = (384.1)/(14.2) mpg = 27.049 mpg approximately
mpg = miles per gallon
Answer:
27.05 miles per gallon
Step-by-step explanation:
384.1 miles = 14.2 gallons
x = 1 gallon
14.2x = 384.1
x = 384.1/14.2
= 27.0492958
≈ 27.05 miles per gallon
Hope this helps and be sure to have a wonderful time at Brainly! :D
Find the missing side of each triangle. Round your answers to the nearest tenth if necessary.
Please show ur work
Answer:
x = 11.2 mi
Step-by-step explanation:
[tex]c^{2} = a^{2} + b^{2}\\(14.4)^{2} = (9)^{2} + b^{2}\\207.36 - 81 = b^{2} \\126.36 = b^{2}\\\sqrt{126.36} = b\\b = 11.2[/tex]
___________
[tex] \: [/tex]
[tex]\boxed{ \rm{answer \: by \: { \boxed{ \rm{☆HayabusaBrainly}}}}}[/tex]
Step by step :x² = (14,4)² - (9)²
x² = 207,36 - 81
x² = 126,36
x = 11,2mi✔
Help
O A) 18cm?
OB) 36cm
OC) 72cm
D) 144 cm
Answer:
C) 72cm
Step-by-step explanation:
Multiply 12 x 6
A. 6
B. 7
C. 12
D. 24
Answer:
A
Step-by-step explanation:
If you count, the number is 12. Then divide that number by 2. You get 6.
[you divide by 2 because you need to find the average. i rlly don't know how to explain better]
Answer:
The answer is A.
6
Which two triangles are congruent by the SSS Theorem? Complete the congruence
statement.
PLEASE HELP!! 50 POINTS!!! Multiply the polynomials (3^2 − 5 + 7) and (2^2 + − 2). Simplify the answer. Show your work.
Answer:
Your answer is 22
Step-by-step explanation:
(3^2-5+7) = 11
2^2+-2 = 2
So 11*2 = 22
Hope this helps
Emma has just started a new sales job. She makes $20 an hour. On top of her hourly wages, she’ll be paid a commission of 15% on all sales she makes. Use this information to answer the following questions.
Part A
Question
Which equation in the form y = mx + cs models Emma’s situation?
y = 20x + 0.15
y = 20x + 15
y = 20x + 0.15s
y = 20x + 15s
Answer:
y = 20x + 0.15s
Step-by-step explanation:
Shew makes $20 par hour, so for x hours, she makes 20x.
She makes 15% commission on the sales, s. 15% = 0.15,so for the sales, s, she makes 15% * s = 0.15s.
The total she makes is 20x + 0.15s
Answer: y = 20x + 0.15s
The equation in the form y = mx + cs models Emma’s situation is
y = 20x + 0.15s
Shew makes $20 par hour, so for x hours, she makes 20x.
What is the slope-intercept form of the line?
The slope-intercept of the line y= mx+c
Where y co-ordinate
x- x co-ordinate
m=slope of the given line
C-y intercept.
She makes 15% commission on the sales, s. 15% = 0.15,
So for the sales, she makes
15% * s = 0.15s.
The total she makes is 20x + 0.15s
y = 20x + 0.15s
To learn more about the line visit:
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List the first 4 terms of the sequence 2n² +n -2
Answer:
1, 7, 17, 31
Step-by-step explanation:
2(1)² + 1 - 2 = 3-2 = 1
2(2)² + 1 - 2 = 9-2 = 7
2(3)² + 1 - 2 = 19-2 = 17
2(4)² + 1 - 2 = 33-2 = 31