Replace f(x) with f(3)
f(3) = -3x - 2
This means that you replace any x values with 3
f(3) = -3(3) - 2
Now solve. Multiply first then subtract
f(3) = -9 - 2
(f3) = -11
Ja’Miya needs to save $84. She has saved $63. What percent of the money she needs , has she saved
Answer:
75%
Step-by-step explanation:
63/84 = .75
.75= 75%
IF FGH = QRS, find the measure of
Answer:
x=9 which makes angle q 28 degrees
Step-by-step explanation:
please mark me as the brainliest
Question
A fence is in the shape of an isosceles triangle with a base of 61 feet. The perimeter of the fence is 190 feet. How long is
each of the equal sides of the fence?
Provide your answer below:
feet
Answer:
x = 64.5 feet
Step-by-step explanation:
Equations
An isosceles triangle has two sides of the same length and one of different length.
The fence has the shape of an isosceles triangle with a base of 61 feet. The base is the side with a different length.
Call x to the length of each of the equal sides. Since the perimeter is the sum of all three sides, and the perimeter is given as 190 feet, then:
x + x + 61 = 190
Simplifying:
2x + 61 = 190
Subtracting 61:
2x = 190 - 61 = 129
Dividing by 2:
x = 129/2
x = 64.5 feet
Can someone please help
I need points lol ,, i hope you find your answer i guess .
9. SHOW FULL STEPS. Solve for f(-4) and f(7) of the function below
f(x)=7-2x-3x²
Answer:
f(-4) = 33
f(7) = -154
Step-by-step explanation:
In this question, you will solve the function by plugging in the given value.
Solve:
f(-4) = 7 - 2(-4) -3(-4)²
= 7 - 2(-4) - 48
= 7 + 8 - 48
= 7 - 40
f(-4) = 33
----------------------------------
f(7) = 7 - 2(7) -3(7)²
= 7 - 2(7) - 147
= 7 - 14 - 147
= 7 - 161
f(7) = -154
Mr. Chen is painting one wall of a room in his attic. He needs to detemine the area of the wall so he will know how much paint he will buy. The drawing below shows the dimensions of the wall.
Part A: Given the drawing, what is the area of the wall?
The area of the wall is
square feet.
Part B: If one quart of paint will cover 22 square feet, how many whole quarts will Mr. Chen need to buy?
He will need to buy
whole quarts.
Area of the figure
= (area of rectangle) + (area of triangle)
= (8 × 10) + (½ × 4 × 8)
= 80 + 16
= 96
Area = 96ft²
Quarts of paint needed
= 96/22
= 48/11
= 4.36
Mr. Chen will have to buy 5 quarts of paint.
Need help quickly, please and thank you;
Amy loaned \$5$5dollar sign, 5 to each of 202020 people. She recorded each loan by writing -\$5−$5minus, dollar sign, 5 in her bank book.What is the total change in the amount of money Amy had before the loans?
Answer:
-30
Step-by-step explanation:
Answer:
its actually -100 in khan academy
Step-by-step explanation:
Find the time required for an investment of 5000 dollars to grow to 9000 dollars at an interest rate of 7.5
percent per year, compounded quarterly.
Your answer is t =
years.
Answer:
i think its 3.5 years
Step-by-step explanation:
4. Tonya bought each of her two sisters
a new basket. She spent $27.94.
How much was each basket?
F $9.31
H $18.21
G $13.97
J $55.88
Answer:
G
Step-by-step explanation:
you just divide the number by 2
Ben Lee earns $86,720 annually. What is his semimonthly pay
Answer:
$3,998 would be the semi monthly pay.
Cassidy has a bag of 72 red beads and 90 blue beads. She would like use the beads to make bracelets that have the same ratio of red to blue beads as in the bag. If a bracelet has 15 blue beads, how many red beads does it have? *
Answer:In a question like this, you are trying to find the Highest Common Denominator, or HCF. This can be done manually, by finding all the factors of 42
(
1
,
2
,
3
,
6
,
7
,
14
,
21
,
42
)
, all the factors of 72
(
1
,
2
,
3
,
4
,
6
,
8
,
9
,
12
,
18
,
24
,
36
,
72
)
, and comparing them to see that their HCF is
6
. Or, it can be done by dividing both numbers,
=
72
42
, simplifying the fraction
=
12
7
, then dividing the starting number with the new simplifiied number, remembering always to divide numerator with numerator and denominator with denominator.
72
12
=
6
or
42
7
=
6
This process works with any two numbers which you want to find the HCF of, and can be simplified into this rule:
If
a
=
any number,
b
=
any number and
c
d
is the simplified fraction of
a
b
,
The HCF
=
a
c
or
=
b
d
I hope that helped!
Step-by-step explanation:
MADEAAA HELPPPPPPPPPPPPP MEEEEEEEEE
Answer:
7 inches
Step-by-step explanation:
SOMEONE AWNSER FAST PlS
Answer:
15X - 11 = <LMN
Step-by-step explanation:
add the two expressions together
3. Which of the following objects does not have three dimensions?
a cube
a house
a soda can
a line
reciprocal of 4 3/5
Answer:
5/23 (Simplified)
Step-by-step explanation:
There ya go.. :D
Daisy cut a square out of a sheet of graph paper. The square had an area of 16 square cm. She then trimmed 1 cm from each side of the square. What is the area of the snaler square?
Answer: 4 cm^2, it went from 4x4 to 2x2.. clipped on all sides...
Hope I helped!
Giving me brainliest is much appreciated! :).
I need help please thanks
Answer:
12
Step-by-step explanation:
12
Which of the following expressions is in simplified form?
-9+ 2.7x + 0.8
03 w+ 1.3w
62 - 4
02t - 5 - t
Answer:
None of these expressions are in simplified form.
Step-by-step explanation: So basically simplified form is that an equation/expression is till you cant combine any like terms. Liked terms are like 4 and 5 or 2x and 3x.
Number 1_ 2.7x-8.2.
Number 2_ 4.3w. Is the 03 a 3 or 0.3?
Number 3_ 58.
Number 4_ t-5. Is the 02t a 2t or 0.2t?
I hope this helps and please let me know about the questions on Number 2 and 4 that I asked about in the explanation below in the comments. Thanks!
Hello!!:)
Please help me answer 7-10 will give brainlst <3
Answer:
7. Slope = -7/4
8. Slope = 2
9. Second Point = (0, 0)
10. Second Point = (0 ,-5)
Step-by-step explanation:
Find the slope: Slope Formula = y2-y1/x2-x1
7. (2, 4) and (6, -3)
x1,x2 = (2, 4) y1,y2 = (6, -3)
(-3 - 4)/(6 - 2)
-7/4
8. (-5, 1) and (-1, 9)
x1,x2 (-5, 1) y1,y2 (-1, 9)
(9 - 1)/(-1 - (-5))
8/4
2
Second Point on Line:
9. We know: slope = 1/2, and (2, 1) is on the line; So:
y = 1/2x + b where we have to still find b
so b = y1 - m * x1
b = 1 - 1/2 * 2
b = 1 - 1
b = (0,0)
If you plug this in to the slope formula, it comes out to 1/2
10. We know: slope = -4, and (-3, 7) is on the line; So
y = -4x + b where we have to still find b
so b = y1 - m * x1
b = 7 - (-4) * -3
b = 7 - 12
b = (0,-5)
If you plug this in to the slope formula, it comes out to -4
Someone can help, I really don't understan
Answer:
B
Step-by-step explanation:
we take 18.90 and subtract 2.95.
now we have 15.95
then divide 15.95 by 5
and now we have 3.19
Answer I think it’s b
Which equation is equivalent to x + 8 = 21? (x + 8) × 4 = 21 (x + 8) × 4 = 21 ÷ 4 (x + 8) × 4 = 21 × 2 (x + 8) × 4 = 21 × 4
Answer:
(x + 8) × 4 = 21 × 4
Explanation:
x + 8 = 21
21 - 8 = 13
(13 + 8) × 4 = 21 × 4
21 × 4 = 21 × 4
84 = 21 × 4
84 = 84
Solve this system by elimination
10x+6y=14
-x-6y=-23
Answer:
(-1, 4)
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDASEquality PropertiesAlgebra I
Solving systems of equations using substitution/eliminationStep-by-step explanation:
Step 1: Define systems
10x + 6y = 14
-x - 6y = -23
Step 2: Solve for x
Elimination
Add 2 equations together: 9x = -9Divide 9 on both sides: x = -1Step 3: Solve for y
Define original equation: -x - 6y = -23Substitute in x: -(-1) - 6y = -23Multiply: 1 - 6y = -23Subtract 1 on both sides: -6y = -24Divide -6 on both sides: y = 45 < k -2 < 11 ?
-4 > y + 2 > -10 ?
5 -m < 4 or 7m > 35 ?
3 < 2p -3 < 12 ?
Answer:
[tex]7 < k < 13[/tex]
[tex]-6>y>-12[/tex]
[tex]m > 5[/tex]
[tex]3 < p < \frac{15}{2}[/tex]
Step-by-step explanation:
Given
[tex]5 < k -2 < 11[/tex]
[tex]-4 > y + 2 > -10[/tex]
[tex]5 -m < 4\ or\ 7m > 35[/tex]
[tex]3 < 2p -3 < 12[/tex]
Required
Solve
Solving (1):
[tex]5 < k -2 < 11[/tex]
The above can be represented as:
[tex]5<k -2[/tex] and [tex]k -2<11[/tex]
Solving [tex]5<k -2[/tex]
[tex]5 + 2 <k[/tex]
[tex]7<k[/tex]
Solving [tex]k -2<11[/tex]
[tex]k < 2 + 11[/tex]
[tex]k < 13[/tex]
So, we have:
[tex]7<k[/tex] and [tex]k < 13[/tex]
This can be combined as:
[tex]7 < k < 13[/tex]
Solving (2):
[tex]-4 > y + 2 > -10[/tex]
Split as:
[tex]-4 > y + 2[/tex] and [tex]y + 2 > -10[/tex]
Solving [tex]-4 > y + 2[/tex]
[tex]-4 - 2 > y[/tex]
[tex]-6 > y[/tex]
Solving [tex]y + 2 > -10[/tex]
[tex]y > -10 - 2[/tex]
[tex]y > -12[/tex]
So, we have:
[tex]-6 > y[/tex] and [tex]y > -12[/tex]
This gives
[tex]-6>y>-12[/tex]
Solving (3):
[tex]5 -m < 4\ or\ 7m > 35[/tex]
Solve for m in both cases:
[tex]5 - m < 4[/tex]
[tex]-m<4 - 5[/tex]
[tex]-m<- 1[/tex]
[tex]m > 1[/tex]
[tex]7m > 35[/tex]
Divide both sides by 5
[tex]m > 5[/tex]
So, we have:
[tex]m > 1[/tex] or [tex]m > 5[/tex]
The solution is [tex]m > 5[/tex] because [tex]5> 1[/tex]
Solving (4):
[tex]3 < 2p -3 < 12[/tex]
The above can be represented as:
[tex]3 < 2p - 3[/tex] and [tex]2p - 3<12[/tex]
Solving [tex]3 < 2p - 3[/tex]
Add 3 to both sides
[tex]3 + 3 < 2p - 3 + 3[/tex]
[tex]6 < 2p[/tex]
Divide both sids by 2
[tex]3 < p[/tex]
[tex]2p - 3<12[/tex]
Add 3 to both sides
[tex]2p - 3 + 3 < 12 + 3[/tex]
[tex]2p < 12 + 3[/tex]
[tex]2p < 15[/tex]
Solve for p
[tex]p < \frac{15}{2}[/tex]
So, we have:
[tex]3 < p[/tex] and [tex]p < \frac{15}{2}[/tex]
Combined as:
[tex]3 < p < \frac{15}{2}[/tex]
Find the constant and exponents of 7y + x-5 + 2
Answer:
Exponents: 1
Constants: -5, 2
Step-by-step explanation:
7y + x - 5 + 2
Exponents: 1
Constants: -5, 2
84/12 = 28/x
Please select the best answer from the choices provided.
A: x = 4
B: x = 28
C: x = 12
D: x = 7
84/12 = 7.
Hence 28/x = 7 and x = 4. (A)
Select all the equations that have the same solution as 2x - 5 = 15
A
2x = 10
B
2x = 20
C С
2(x - 5) = 15
D
2x - 20 = 0
E
43 - 10 = 30
F 15 = 5 – 22
Answer:
Step-by-step explanation:
2x - 5 = 15
Bringing like terms on one side
2x = 15 + 5
2x = 20
Option B is the correct answer
Answer:
b) 2x = 20
c) 2(x - 5) = 15
D) 2x - 20 = 0
Explanation
2x - 5 = 15
2x = 15 + 5
2x = 20
x= 20/2
x= 10
a) 2x = 10
x= 10/2
x= 5 (which is not correct)
b) 2x = 20
x= 20/2
x = 10 (which is correct )
c) 2(x- 5) = 15
2x - 10 = 15.
2x = 15 +10
2x = 20
x = 20/2
x= 10 ( which is correct)
d) 2x - 20 = 0
2x = 20
x= 20/2
x= 10 ( which is correct)
The box by players performed the lion king 3 times to a sold out theater. Tickets cost $19 each. And ticket sales totaled $7068. How many people saw the show each night?
Number of tickets sold:
Number of people in the audience each night:
Answer:
Number of tickets sold: 372
Number of people each night: 124
Answer:
Number of tickets sold:
372
Number of people in the audience each night:
Roughly 124 per night
Which is greater -3.7 or -3 2/5
Answer:
-3 2/4 is greater that -3.7
Step-by-step explanation:
2/4 is 0.4 and when dealing with negatives so the lower negative is the closest to 0 so the smaller negative is the greatest.
Help don’t understand
Answer:
Wait u don’t understand what is there supposed to be a pick or something?
Step-by-step explanation: