Answer:
The original number is 83
Step-by-step explanation:
let the number be ab
Sum of the two is 11
a + b = 11
tens digit a is one less than 3 times the ones digit
3b - a = 1
a = 3b - 1
3b -1 + b = 11
4b = 11 + 1
4b = 12
b = 12/4
b = 3
a = 3b - 1
a = 3(3) - 1
a = 9-1
a = 8
choose the symbol that correctly compares these mixed numbers .
Answer:
B. <
Step-by-step explanation:
The whole parts are equal since they are both 9.
We just need to compare the fractions 3/8 and 5/7.
The LCD is 8 * 7 = 56
3/8 = 21/56
5/7 = 40/56
3/8 < 5/7
9 3/8 < 9 5/7
Hector's goal is to run at least 135 miles. He is going to run at least 3 miles per day.
Answer:
what's the question here if ur asking how long It'll take it's 45
two times what wade's age was seven years ago
Answer:
how old is he now...?
The shadow of a vertical tower is 52.5 meters long when the angle of elevation of the sun is x degrees. The height of the tower is 41 meters. Find the angle of elevation rounded to the nearest degree.
Answer:
Angle of Elevation = 38°
Step-by-step explanation:
Angle of Elevation formula is given as
tan x = Opposite /Adjacent
Where
x = Angle of Elevation
Opposite = Height of the tower = 41 meters
Adjacent = Shadow of the vertical tower = 52.5 meters
Hence:
tan x = 41 m/52.5m
x = arc tan (41 m/52.5m)
x = 37.988141726°
Approximately to the nearest degree x = 38°
4(2x - 5) = 5x - 8
step by step
Answer:
x = 4
Step-by-step explanation:
4(2x - 5) = 5x - 8
Distribute 4: 8x - 20 = 5x - 8
Add 20 to both sides: 8x = 5x + 12
Substract 5x from both sides: 3x = 12
Divide both sides by 3: x = 4
(3,1) and (w,9); slope = -8/3
W= ?
Answer:
w=0
Step-by-step explanation:
We know a point (3,1) and the slope (-8/3), so we can use point-slope form, which is y-y1=m(x-x1)
For reference, y1 is the y in the point, m is the slope, and x1 is the x in the point
So we subsitute it
y-1=-8/3(x-3)
do distributive prop.
y-1=-8/3x+8
add 1 to both sides
y=-8/3x+9
This is the equation of the line.
Now to find w, which is the x value.
The point will pass through line, so we can susbtitute the point into the equation.
9=-8/3x+9
subtract 9 from both sides
0=-8/3x
multiply by -3/8 on both sides (the reciprocal of -8/3), we need to isolate x
0=x
x=w
therefore, w=0
Hope this helps!
please help
Simplify:
-(7x - 9)
Evaluate 8 • 3^x for (a) x = -2 and (b) x = 3. Write your
answers in simplest form.
Answer: 216
Step-by-step explanation:
Solve (5x-5)
6x-3 = 5x-5
Answer:
x=-2 willl be your answer
Answer:
X=-2
please mark brainliest if satisfied
Step-by-step explanation:
Subtract 5x from both sid
55 simplified plssssss
Answer:
11/20 is a simplified fraction for 55/100
Can someone plz help .quick!!! Plz I beg u
Answer:
its number 2
Step-by-step explanation:
What is the solution to the system of equations? y = 12x + 2 2y = x + 4
Answer:
(x,y)=(-28/11,16/11)
Step-by-step explanation:
hope this helps!
Answer:
x=0, y=2. (0, 2).
Step-by-step explanation:
y=12x+2
2y=x+4
------------
2(12x+2)=x+4
24x+4=x+4
24x-x=4-4
23x=0
x=0/23
x=0
y=12(0)+2
y=0+2
y=2
y=9x; (4, 36)
Is the ordered pair a solution to the equation?
Somebody help me out
8=-5k+k
Answer:
k = -2
Step-by-step explanation:
8 = -4k
8 / -4 = k
k = -2
Please mark as Brainliest!!!samantha works at a nursery where she pots plants it takes her 1/1/2 hours to pot 12 plants ) how many plants can samantha pot in 1 hour
Answer:
its 1/8.
Step-by-step explanation:
i think its that
I need help with only 1-4. I'll give brainliest to the most helpful answer !!!
Answer:
1. the second picture
2. the third picture
3. the third picture
4.the first picture
ASAP 20 points - Which expression best estimates 6 and 3/4 divided by 1 and 2/3?
A. 7 divided by 2
B. 6 divided by 1
C. 8 divided by 3
D. 3 divided by 2
Answer:
A. 7 divided by 2
Step-by-step explanation:
The computation is shown below;
[tex]= 6\frac{3}{4} \div 1 \frac{2}{3} \\\\= \frac{27}{4} \div \frac{5}{3}\\\\= \frac{27}{4} \times \frac{3}{5}\\\\= \frac{27\times 3}{4\times 5} \\\\= \frac{81}{20} \\\\= 4 \frac{1}{20}[/tex]
It could be 4.05
So according to the given options, the option 1 is chosen at is closed to 4.05
Hence, the option A is correct
Make x the subject of the formula [tex]mx^2=p[/tex]
Answer:
x = ± [tex]\sqrt{\frac{p}{m} }[/tex]
Step-by-step explanation:
Given
mx² = p ( divide both sides by m )
x² = [tex]\frac{p}{m}[/tex] ( take the square root of both sides )
x = ± [tex]\sqrt{\frac{p}{m} }[/tex]
Which is a value for a that makes the following true? a/-3 - 1 > 4
Answer:
a= -18
Step-by-step explanation:
-18/-3 = 6
6-1=5
5>4
I just used guess and check to find -18 :)
ill give brainliestetfgeyhe on other question too!! PLS ANSWER I CANT GO TO SUMMER SCHOOL
Answer:
8 grams
Step-by-step explanation:
The balance is in equilibrium, so the weights of the two sides are equal.
Let the weight of a square be s.
Left side: 2s + 4
Right side: s + 3(4) = s + 12
The weights are equal, so we set the two expressions equal.
2s + 4 = s + 12
s = 8
Answer: The weight of a square is 8 grams.
Question 2: The first step was the combine the like terms; in this example he is subtracting the 3x on both sides of the =.
Answer: x=14
only #2
Step-by-step explanation:
Step 1: Subtract 3x from both sides.
2x+6−3x=3x−8−3x
−x+6=−8
Step 2: Subtract 6 from both sides.
−x+6−6=−8−6
−x=−14
Step 3: Divide both sides by -1.
-x/-1=-14/-1
Jordyn went to the fair and paid $5 for admission (entrance fee). Additionally, she paid $2 for every ride she went on. How much money did Jordyn spend at the fair if she paid for admission and to go on 6 rides? *
Answer:
Jordyn spent $17 at the fair.
Step-by-step explanation:
From the information given, you know that the amount spent at the fair would be equal to the entrance fee plus the result of multiplying the price for every ride for the number of rides, which could be express as:
Total amount=5+2x, where:
x is the number of rides
With this formula, you can find the amount that Jordyn spent at the fair if she paid for admission and to go on 6 rides by replacing x with 6:
Total amount=5+(2*6)
Total amount=5+12
Total amount=17
According to this, the answer is that Jordyn spent $17 at the fair.
help please !!
don’t understand
Step-by-step explanation:
For two lines to be parallel they must have the same slope that is,M1=M2
For two lines to be perpendicular the slope of one must be the negative reciprocal of the other
Let's first find the slope of all three lines.
For line 1
6x-6=10y
2/5x-2/5=y
slope=2/5
For like 2
slope=5/3
For line 3
y=5/3x+2/3
We can therefore say that:
line 1 and line2 are neither parallel nor perpendicular
line 1 and line 3:
neither parallel nor perpendicular
line 2and line 3:
parallel lines
To the nearest hundredth, which is the value of x in the solution of the following system? 3.5x - 2.8 = -4.67x + 12.5 Select one: a. -3.75 b. -1.87 c. 1.87 d. 3.75
Answer:
C. 1.87
Step-by-step explanation:
3.5x - 2.8 = -4.67x + 12.5
3.5x + 4.67x = 12.5 + 2.5
8.17x = 15.3
x = 15.3 ÷ 8.17
x = 1.87270501836
So, the closest choice to 1.87270501836 is 1.87, so the answer is C.
Hence, the answer would be C. 1.87. I am 100% sure on this, for I am a pro.
Please mark as Brainliest!!!sove this given equation
Answer:
Love you too
As a friend :)
please answer!!
True or False: Rectangles, Rhombuses, and Squares are Parallelograms and
have all the properties of Parallelograms.
Answer:
False
Step-by-step explanation:
Answer:
False
Step-by-step explanation:
A solar phone charger can use energy from the Sun to supply electric power to your cell phone. How does this phenomenon support the particle model of light? O A. It is the result of the photoelectric effect. O B. It is the result of reflection. C. It is the result of diffraction. O D. It is the result of interference.
Answer:
A. It is the result of the photoelectric effect.
Step-by-step explanation:
Answer:A
Step-by-step explanation:
please help with thus question
Answer:
The Temperature at 7PM
Step-by-step explanation:
Can somebody please help me with this
Answer:
first one is: y=-2^×+4
second one is:2^×4
third one is:3y=2^×-4
fourth one is:y=-2^×+4
Step-by-step explanation:
i think so
good luck
2. y is inversely proportional to cube of x.
When x = 2, y = 4.
Find y when x = 4
(3 Points)
Answer:
y = 0.5 at x = 4
Step-by-step explanation:
According to question,
y is inversely proportional to cube of x i.e.
[tex]y\propto \dfrac{1}{x^3}\\\\y=\dfrac{k}{x^3}[/tex]
or
[tex]k=yx^3[/tex]
Put x = 2 and y = 4 in above expression to find k.
[tex]k=4\times (2)^3\\\\=32[/tex]
Now put x = 4 to given equation to find y.
[tex]y=\dfrac{32}{4^3}[/tex]
y = 0.5 or 1/2
So, the value of y is 0.5 when x = 4.
Can you help with this math please?
Answer:
3 on the other side and 7 and 7 on the sides
Step-by-step explanation: