9// Please help for 20 points!! thank you if you help
Which property of equality should be used to cancel the operation performed on the variable in the following equation?
2x= 8
Answer:
division
Step-by-step explanation:
2x/2=8/2=x=4
x=4
algebra 1 question please help
Answer:
y-intercept = 5common ratio = 1/2Step-by-step explanation:
The y-intercept and the common ratio of an exponential function can be read from the equation. The form of the equation is ...
y = a·b^x
where 'a' is the y-intercept, and 'b' is the common ratio.
You have ...
y = 5·(1/2)^x
Comparing this to the above form, you can see that ...
y-intercept = 5
common ratio = 1/2
A triangle has angles measuring 10°, 40°, and 130° with side lengths of 23 cm, 84 cm, and 100 cm.
Classify this triangle by its angles and sides.
o A. acute equilateral
O
B, obtuse isosceles
o
C. acute isosceles
D. obtuse scalene
I NEED HELP ASAP
Answer:
Step-by-step explanation:
ok so you need help asap i will give a quick answer: obtuse
I
opposite of -25x^{2}+30x+9
Answer:
25x² - 30x - 9
Step-by-step explanation:
the opposite of the expression is its negative , that is
- (- 25x² + 30x + 9) ← multiply each term in the parenthesis by - 1
= 25x² - 30x - 9
What is the value of the expression shown below?
3 over 5 to the power of 2 + 4 × 3 − 2 (4 points)
10 and 9 over 25
11 and 2 over 25
12 and 9 over 25
13 and 2 over 25
A rectangle has an area of 60 square meters. The width is 4 more than 1 time the length. Find the length and width, in meters of the rectangle
Answer:
length: 6 mwidth: 10 mStep-by-step explanation:
The product of length and width is the area, 60 m². The width is 4 more than the length, so we need factors of 60 that differ by 4.
60 = 1·60 = 2·30 = 3·20 = 4·15 = 5·12 = 6·10
The last pair of factors, 6 and 10, differ by 4.
The width is 10 meters; the length is 6 meters.
please help me i’ll mark brainlist
i dont see it it is too far
Answer:
see explanation
Step-by-step explanation:
A - eliminate the fractions → d
B
[tex]\frac{1}{r_{1} }[/tex] + [tex]\frac{1}{r_{2} }[/tex] = [tex]\frac{1}{R}[/tex]
multiply through by Rr₁r₂ to clear the fractions
Rr₂ + Rr₁ = r₁r₂ ( factor out R from each term on the left side )
C
R(r₂ + r₁) = r₁r₂ ← divide both sides by (r₂ + r₁)
R = [tex]\frac{r_{1}r_{2} }{r_{2}+r_{1} }[/tex]
Bonjour je ne comprend pas cette exercice pouvez vous m'aider svppp
Je suis un rectangle
Mon aire est 10+5x une de mes dimensions est 5
Que vaut mon autre dimension ?
Mercccii
Answer:
l'autre dimension x+2
Step-by-step explanation:
Formule por 'aire
L × l, longueur fois largeur
(5) x (x+2) = 5x+10
Suppose that 23 inches of wire costs 92 cents. At the same rate, how much (in cents) will 19 inches of wire cost?
Answer:
76 cents
Step-by-step explanation:
23 inches = 92 cents
1 inches = 92 ÷ 23
= 4 cents
19 inches = 19 × 4
= 76
help me dawg. I need this
The answer is Choice (A)
please help, with an explanation !!
Ratio remains same
AX:XC=DX:XB=3:2So
DX=12cmXB=8cmAX=7.2cmXC=4.8cmNow
<ABX be P
[tex]\\ \rm\Rrightarrow tanP=\dfrac{AX}{BX}[/tex]
[tex]\\ \rm\Rrightarrow tanP=\dfrac{7.2}{8}[/tex]
[tex]\\ \rm\Rrightarrow tanP=\dfrac{9}{10}[/tex]
[tex]\\ \rm\Rrightarrow P=41.98°[/tex]
And
<XBC be N[tex]\\ \rm\Rrightarrow tanN=\dfrac{XC}{BX}[/tex]
[tex]\\ \rm\Rrightarrow tanN=\dfrac{4.8}{8}=\dfrac{3}{5}[/tex]
[tex]\\ \rm\Rrightarrow tanN=0.6[/tex]
[tex]\\ \rm\Rrightarrow N=30.96[/tex]
Now
<ABC=30.96+41.98=72.94°Answer:
∠ABC = 73.74° (nearest hundredth)
Step-by-step explanation:
Properties of a kite:
A kite has two pairs of equal sides.It has one pair of equal angles.The diagonals bisect at right anglesIf X is the point of intersection, the length of BD = 20 cm
and DX : XB = 3 : 2, then
⇒ DX = 3/5 of 20 and XB = 2/5 of 20
⇒ DX = 12 cm and XB = 8 cm
(see attached diagram)
∠ABC =∠XBC + ∠XBA
As ∠XBC ≅ ∠XBA then ∠ABC = 2∠XBC
To find ∠XBC use tan ratio:
[tex]\mathsf{tan(\theta)=\dfrac{opposite \ side}{adjacent \ side}}[/tex]
Given in ΔXBC
angle = ∠XBCside opposite the angle = 6 cmside adjacent the angle = 8 cm[tex]\mathsf{tan(XBC)=\dfrac{6}{8}=\dfrac34}[/tex]
[tex]\mathsf{angle(XBC)=tan^{-1}\left(\dfrac34\right)}[/tex]
∠XBC = 36.86989765...°
Therefore, ∠ABC = 2 x 36.86989765...°
= 73.73979529...°
= 73.74° (nearest hundredth)
What is the solution to log[sub=2]9x-log[sub=2]^3=3
x = three-eighths
x = eight-thirds
x = 3
x = 9
Step-by-step explanation:
[tex]\begin{aligned}\log_2(9x)-\log_2(3)&=3\\\log_2\left(\frac{9x}{3}\right)&=3\\\log_2(3x)&=\log_2(2^3)\\3x&=2^3\\3x&=8\\x&=\frac{8}{3}\end{aligned}[/tex]
-
Your cousin gave you $16 with which to
8
buy a present. This covered – of the cost.
9
How much did the present cost?
Answer:
If my cousin gave me $16 ( my real cousins never did T_T) and I am left with $8 while buying a present. The present cost $8...
Wow, I thought I was bad at math
please help thank yous
144,702
104,392
146,310
114,573
144,719
These are all the numbers written out in order from the picture.
146,310
144,719
144,702
114,573
104,392
These are the numbers greatest to least.
The attached file is the order it all goes in, 1 being greatest, 5 being least.
I know what Y is but I don't know X
Answer: y = 120 degrees, x = 31 degrees
Step-by-step explanation:
Y is 120 degrees because same-side exterior angles are supplementary.
Therefore, 60+ y = 180; y = 120
Since "y" and "4x-64" are supplementary, they add up to 180.
We already know y as 120.
So 120 + 4x - 64 = 180
4x = 124
x = 31
Can someone please give me the (Answers) to this? ... please ...
I need help….
Answer:
see below
Step-by-step explanation:
I will be using pythagorean triples for some, but you can use sqrt(a^2+b^2)=c^2
1. 12 13 5 x=5
2. 3 4 5 x=5
3. sqrt(14.7^2-11.9^2)=sqrt(74.48) or around 9 (root is irrational)
4. sqrt(15.4^2-6.3^2)=sqrt(197.47) or around 14 (same thing)
5. sqrt(15^2-11^2)=2*sqrt(26) or around 10
6. sqrt(4^2-sqrt(6)^2)=sqrt(16-6)=sqrt(10) or around 3
7. sqrt(12^2+9^2)= 15, so it is a right triangle
8. 9, 12, 15 divide by 3- 3, 4, 5 pythagorean triple - is a right triangle
9. 9, 12, 15-17>15, obtuse
10. sqrt(20.1^2+18^2)=20.4 - 20.1<20.4, acute
11. sqrt(4.8^2+28.6^2)=29, 29=29, right
3. The angle measures of a triangle are shown in the diagram. What is the
value of x?
(HINT: If you aren't able to solve it using an equation, you can plug in your answer choices
to see which one gets you to the correct tolal for the interior angles of a triangle.)
500
((2x)"
30°
Answer:
x=50
Step-by-step explanation:
angles in a triangle add up to 180 degrees
hence, 50 + 2x + 30 = 180
solving for x
50 + 2x + 30 = 180
combine like terms
2x + 80 = 180
subtract 180 from both sides
2x = 100
divide both sides by 2
x = 50
Answer:
x=50
Step-by-step explanation:
50°+30°+2x = 180° (sum of all angles of a triangle)
or, 2x +80°= 180°
or, 2x = 180°-80°
or, 2x=100°
or, x= 100°/2
therefore,x°=50°
Again,
2x = 2×50°=100°
(would appreciate it if you could mark me the brainliest:))
5
Which of the following represents points
on the graph of y = 3x?
А (3, 6), (4, 12), (-1, -3)
B (2,6), (3,9), (1,3)
В
(4, 12), (5,8), (2, 6)
D
(-1,3), (5, 15),(-3,-9)
Help I am kinda of confused by this problem so solve it and show your work please!
Answer:
You need to sell each week at least 15 subscriptions to earn at least
$40/week (15 subscriptions or more)
Step-by-step explanation:
s= subscriptions
2s+ 10 ≥40
2s ≥ 30
s ≥ 15
$2x15 =$30
$30+ $10 of salary = $40
Arturo bought some belts online for $73. He used a coupon code to get a 20%
discount. The website also applied a 15% processing fee to the price after the
discount. How much was the processing fee? Round to the nearest cent.
Answer:
The processing fee will cost $8.76
Step-by-step explanation:
the price after the discount:
20% = 0.2
100% = 1
1 - 0.2 = 0.8
0.8
$73 • 0.8 = $58.4
cost of processing fee:
15% = 0.15
$58.4 • 0.15 = $8.76
A triangle is formed by the building's height and shadow. Another triangle is formed by the flagpole's height and shadow. Using the following diagram, find the height of the building. Show work.
Answer:
475 ft
Step-by-step explanation:
[tex]\frac{x}{25}[/tex] = [tex]\frac{38}{2}[/tex]
cross multiply
2x = 950
x = 475
The height of the building is 475 ft.
What are similar triangles?In similar triangles, corresponding sides are always in the same ratio.
Given that, a triangle is formed by the building's height and shadow. Another triangle is formed by the flagpole's height and shadow.
The triangles are forming similar triangles,
Let the height of the building be x
Therefore, x/25 = 38/2
x = 475
Hence, The height of the building is 475 ft.
For more references on similar triangles, click;
https://brainly.com/question/25882965
#SPJ2
Antonio earns $5 an hour for raking leaves. He also has $35 in savings which equation shows the amount of money m Antonio will have after raking leaves for a number of hours h
Answer:
5h + $35 = x
Step-by-step explanation:
Answer:
Step-by-step explanation:
5 dollars an hour = 5
35 savings shows the amount of money = 35m
Raking leaves for numbers of hours = h
5h + 35m=h
This is for cloud breeze thanks cloud breeze so much
Answer/Step-by-step explanation:
Thank you I really Appreciate it <3
A student said that 42% of 78 is 45. Is this answer reasonable? Explain.
WORTH 20 POINTS
Answer:
42% can round to 40%, and 78 can round to 80. 40% of 80 is 32, so 42% of 78 should be about 32. 45 is much greater than 32, so the answer is not reasonable.
Step-by-step explanation:
I need help with the attached
Answer: super sorry! i have no idea but im sure someone else knows (:
Step-by-step explanation:
sorry
13x - 6 = 8x + 19 solve for x
Answer:
x=5
Step-by-step explanation:
13x-6=8x+19 +6 on both sides
13x=8x+25 -8 on both sides
5x=25 /5 on both sides
x=5
At a football game, 43% of people attending were supporting the home team, while 57% were supporting the visiting team. If the total number of people attending the game was 4500, how many people attending were supporters of the home team?
Multiply total people by the percent that support the home team:
4500 x 43% = 4500 x 0.43 = 1935
Answer: 1935 people
How do you get why by itself in this equation? 4x+5y=5
Answer:
first we get y on one side by itself.
4x+5y=5
we'll move x to the other side.
4x-4x+5y=5-4x
simplify.
5y=5-4x
now we get rid of the coefficient on y.
5y/5=(5-4x)/5
simplify.
y=5/5-4x/5
y=1- [tex]\frac{4}{5}x[/tex]
The answer is [tex]y=1-\frac{4}{5}x[/tex]
can you help me? aaaaaaaaaaaaaaaaaaaa
Answer:
8.6
Step-by-step explanation:
First look at the small triangle and find the angle that is common between the big and small triangle.
TanФ=Opp/Adj
TanФ=2/3
now look at the big triangle,
again TanФ= h/13
we know tanФ=2/3,
∴2/3=h/13
(2/3)*13=h
h= 8.6