Answer:
b = -9
Step-by-step explanation:
-7b - 4(b + 7) = -3b - 4(b -2)
First we want to distribute the coefficients across the parentheses. To do so, we multiply the coefficient by every term within the parentheses.
-7b - 4(b + 7) = -3b - 4(b - 2)
-4 • b = -4b
-4 • 7 = -28
-4 • b = -4b
-4 • -2 = 8
Simplify the expression with these new values.
-7b - 4b - 28 = -3b - 4b + 8
Now we want to combine the like terms. First combine the variables.
-7b - 4b - 28 = -3b - 4b + 8
-11b - 28 = -7b + 8
Combine further by adding 7b to both sides.
-4b - 28 = 8
Combine the constants by adding 28 to both sides.
-4b = 36
Isolate b by dividing both sides by -4.
b = -9
This is your answer.
Check your answer by plugging b = -9 back into the original equation.
-7b - 4(b + 7) = -3b - 4(b - 2)
-7(-9) - 4(-9 + 7) = -3(-9) - 4((-9) - 2)
63 - 4(-2) = 27 - 4(-11)
63 + 8 = 27 + 44
71 = 71
Your answer is correct.
Hope this helps!
Answer:
-9 is the required answer of b
Step-by-step explanation:
-7b - 4(b + 7) = -3b - 4(b-2)
open bracket
-7b-4b-28=-3b-4b+8
-11b-28=-7b+8
-11b+7b=28+8
-4b=36
b=36/-4=-9
Original Price Percent of Discount Sale Price $ 15% $146.54
Answer:
$21.98
Step-by-step explanation:
Answer:
172.40
Step-by-step explanation:
Susan is planting a flower garden. She planted 4 lilies for every 5 rose bushes. If Susan plants 16 lilies, how many rose bushes did she plant?
Answer:
20 rose bushes
Step-by-step explanation:
(2.5) to the power of 2 = ? please help ASAP
Answer: 6.25
Step-by-step explanation:
What is the approximate height of a man who wears a
size 7 shoe? Round to the nearest whole number,
inches
Answer: 64 inches
Step-by-step explanation:
Got it right
ILL MARK YOU BRAINLIST PLEASE Simplify this expression
3x^(2) times 4x^(5)
Answer:
12[tex]x^{7}[/tex]
Step-by-step explanation:
3x^2(4)x^5
=3*x^2*4*x^5
=12*x^7
=12x^7
Please mark brainlist!
algebra 1, help please
Answer:
A
Step-by-step explanation:
slope of line ⊥ to the line 4x-2y=6 or 2y=4x-6 or y=2x-3 is -1/2
eq. of line through (6,-8) with slope -1/2 is
y+8=-1/2(x-6)=-1/2 x+3
or y=-1/2 x+3-8
or y=-1/2 x-5
6
B
42°
3.1 m
32°
A
D
С
Calculate the length of AB.
Show your working clearly.
Give your answer correct to 3 significant figures.
Answer:
D i did the test and got a 100
Step-by-step explanation:
Drag and drop the appropriate parts of an inequality into the boxes to form a complete inequality that
represents the description.
Max has less than 7 carrots (number of carrots Max has = c).
The inequality that describes this situation is
Answer:
c < 7.
Step-by-step explanation:
Number of carrots c is less than 7.
14 cm
8 cm
8 cm
....
Answer:
88cm²
Step-by-step explanation:
8 x 8 = 64
14 - 8 = 6
6 x 8 = 48
48 ÷ 2 = 24
64 + 24 = 88
Solve for x
2^x= 0.0625(X is an integer)
Answer:
there you go:)
..................
What is the best method to use?
- 4x - 2y = -12
4x + 8y = -24
Answer:
x=6, y=-6. (6, -6). I used elimination method.
Step-by-step explanation:
-4x-2y=-12
4x+8y=-24
-------------------
6y=-36
y=-36/6
y=-6
-4x-2(-6)=-12
-4x+12=-12
-4x=-12-12
-4x=-24
4x=24
x=24/4
x=6
Find the perimeter of the figure to the nearest hundredth.
Answer:
42.84cm
Step-by-step explanation:
The perimeter is the sum of all the side length and the circumference of the semicircle
circumference of the semicircle = 2πr/2 = πr
circumference of the semicircle = 3.14 * (12/2)
circumference of the semicircle = 3.14 * 6
circumference of the semicircle = 18.84cm
Perimeter of the figure = 10cm + 6cm + 8cm + 18.84cm
Perimeter of the figure = 42.84cm (to nearest hundredth)
3) Simplify:
[tex] {12x}^{2} - 27 \\ 4 - (2x + 1)[/tex]
Answer:
4+ [tex]\frac{3}{5}[/tex]
Step-by-step explanation:
Answer:
[tex]3(4x^2-9)[/tex]
Step-by-step explanation:
First, we can start by factoring [tex]12x^2-27[/tex] so that we get:
[tex]3(4x^2-9)[/tex]
Second Question:
Answer:
Step-by-step explanation:
We can get rid of the parentheses by multiplying the minus inside:
[tex]4-(2x+1)=4-2x-1 \text{ Now, we see that -1+4=3, and that we have:}\\3+2x \text{ as our final answer }[/tex]
what is more ? 3 slices of a 12 inch pizza or 2 slices of a 14 inch pizza
The universal set is U = {Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday}. If A = {Monday, Tuesday,Wednesday, Thursday, Friday} and B = {Friday, Saturday, Sunday}, find the indicated set.
A intersect B '
Answer:
{Monday, Tuesday, Wednesday, Thursday}
Step-by-step explanation:
First we need to get the complement of B i.e B'
B' are the set in the Universal set but that are not in B
B' = {Monday, Tuesday, Wednesday, Thursday}
A= {Monday, Tuesday, Wednesday, Thursday, Friday}
A intersect B ' are the days of the week that are common to both sets;
A intersect B ' = {Monday, Tuesday, Wednesday, Thursday}
can someone help me plz ??
Answer: c
Step-by-step explanation:
Answer:
C
Step-by-step explanation:
What numbers are less than 2.9 and -4.2?
Austin’s mother bakes muffins at a rate of 4 dozen per hour. She signed up to bake 42 dozen for Sunday’s bake sale. How long will it take Austin’s mother to bake the required muffins?
Answer:
10.5 hours
Step-by-step explanation:
42/4 = 10.5
Someone please please help me on this!!!!
Answer:
constant of proportionality is 3.5, just divide the y column by the x column
Are the two triangles below congruent? explain how you know
can you check my answers?
Answer:
theyre correct
Step-by-step explanation:
2/3 x 2/3 x 2/3 = plz answer me
The answer is 8/27 beacuse you must moltiplicate 2 for 2 and after for 2. Then 3 for 3, and after for 3
Graph the image of the polygon after a reflection in the line y=x
PLEASE HELP
Answer:
a6,-3
b1,-2
c4,1
Step-by-step explanation:
The image of the polygon after a reflection in the line y=x is has vertices at A'(-3, 6), B'(-2, 1) and C'(1, 4) as shown in the diagram attached.
Transformation is the movement of a point from the initial location to a new location. Types of transformation is rotation, reflection, translation and dilation.
Reflection is the flipping of a figure. If a point A(x, y) is reflected about the line y = x, the new point would be at A'(y, x)
Given the polygon with vertices at A(6, -3), B(1, -2) and C(4, 1). The image of the polygon after a reflection in the line y=x has vertices at:
A'(-3, 6), B'(-2, 1) and C'(1, 4)
The image of the polygon is attached
Find out more at: https://brainly.com/question/15487308
Please help!!! my teacher doesn’t even know how to answer!!
Answer:
It is B
Step-by-step explanation:
If you subract the numbers(year5-year4=#) and you gather all of the # and add them, then subract the years again, you end up with B.
What is Obama's last name?
Answer:
OBAMA
Step-by-step explanation:
Answer:
obama
Step-by-step explanation:
So, Christian has a collection of 18 shark teeth. He identified them as 6 tiger shark teeth, 8 sand shark teeth, and the rest as bull shark teeth, I don’t get the 2nd question, can anyone help??
Answer:
So, the question means that if we add the number of tiger shark teeth and the sand shark teeth and subtract it from the total number of teeth, we will get the number of bull shark teeth. And, the number of bull shark teeth is 4.
Step-by-step explanation:
So, the question means that if we add the number of tiger shark teeth and the sand shark teeth and subtract it from the total number of teeth, we will get the number of bull shark teeth.
Since Christian has 18 shark teeth, and 6 are tiger shark teeth, 8 are sand shark teeth and the rest are bull shark teeth.
Let x represent the number of bull shark teeth.
So, total number of shark teeth = number of tiger shark teeth + number of sand shark teeth + number of bull shark teeth.
18 = 6 + 8 + x
18 = 14 + x
subtracting 14 from both sides, we have
18 - 14 = 14 - 14 + x
4 = 0 + x
4 = x
x = 4
So, the number of bull shark teeth is 4.
PLS HELP I WILL GIVE BRAINLIEST PLS
Answer:
B.
Step-by-step explanation:
x represents the amount of guests going to the birthday party, with the amount of money per guest being 12. You would multiply those two together, but as we do not know the total amount of guests, we keep it as a variable. 125 is the amount before the guests even know about the party, so therefore, you would need to use that equation.
jada jumped rope for 15 mins.. what percentage of diegos time is that? (diegos time is 20 mins)
Answer:
103 percent
just divide 20 by 15 and multiply the answer by 100 to convert to percentage form bro
If the image below is dilated with a scale factor of 2, what is the perimeter of the dilated image?
Answer:
the answer is 24
Step-by-step explanation:
i got it correct on my test
Someone help me with this please
Answer:
1/3 x 1/3 = ?
3 x 3 = ?
Step-by-step explanation:
3 x 3 = 9 yesyes
1/3 x 1/3 = 1/9
now we add, right? 9/1 ( same as 9 ) + 1/9 = ?
does it want it in fraction, decimal, or whole?
Answer:
9 1/9 is the answer
Step-by-step explanation:
1/3 to the power of 2 becomes 1/9
3 to the power of 2 becomes 9
[tex]\frac{1}{9} + 9[/tex]
whole numbers always go over a 1
[tex]\frac{1}{9} + \frac{9}{1}[/tex]
make 9/1 have the same denominator as 1/9 by multiplying the top and bottom with 9
[tex]\frac{1}{9} + \frac{81}{9}[/tex] [tex]= \frac{82}{9}[/tex]
the simplify 82/9
[tex]\frac{82}{9} = 9\frac{1}{9}[/tex]