Answer:
13
Step-by-step explanation:
3(7)-4x
3(7)-4(2)
21-8
=13
Which is more, 7 feet or 81 inches?
Answer: 7 feet
Step-by-step explanation:
1 foot = 12 inches
7 * 12 = 84
7 feet = 84 inches
84 inches are more than 81 inches
Answer:
7 feet is greater
Step-by-step explanation:
you can change feet to inches. one foot is the same as 12 inches. so 7 feet = 84 inches. so 84 > 81 so 7 feet is greater
my question is y = 4x + 1 and my options are
a. 4, 3
b. 4,1
c. 1,4
d. 3,1
Answer:
B. 4,1
Step-by-step explanation:
Geometry question can somebody help answer it?
Answer:
5
Step-by-step explanation:
looking at the congruency statement, we can tell A and D are equal
so we set up the equation that way: 10x=50
divide by 10 on both sides: x=5
Solve each equation by completing the square. I need help with #9 show work too plsss
Answer:
9) we get value of x: [tex]\mathbf{x=-4+\sqrt{42}\:i, x=-4-\sqrt{42}\:i}[/tex]
Option C is correct.
10) The difference is [tex]2k^3+3k-1[/tex]
Option A is correct.
Step-by-step explanation:
9) We need to solve:
[tex]x^2+8x+58=0[/tex]
Solving using quadratic formula: [tex]x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}[/tex]
We have a=1, b=8 and c=58
Putting values and finding value of x
[tex]x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}\\x=\frac{-8\pm\sqrt{(8)^2-4(1)(58)}}{2(1)}\\x=\frac{-8\pm\sqrt{64-232}}{2}\\x=\frac{-8\pm\sqrt{-168}}{2}\\We\:know\sqrt{-1}=i \\x=\frac{-8\pm2\sqrt{42}\:i}{2}\\x=\frac{2(-4\pm\sqrt{42}\:i)}{2}\\x=\frac{2(-4+\sqrt{42}\:i)}{2}, x=\frac{2(-4-\sqrt{42}\:i)}{2}\\x=-4+\sqrt{42}\:i, x=-4-\sqrt{42}\:i[/tex]
So, we get value of x: [tex]\mathbf{x=-4+\sqrt{42}\:i, x=-4-\sqrt{42}\:i}[/tex]
Option C is correct.
10) [tex](5-2k^3-5k)-(-4k^2+6-8k)[/tex]
Combining like terms and subtracting:
[tex](5-2k^3-5k)-(-4k^3+6-8k)\\=5-2k^3-5k+4k^3-6+8k\\=-2k^3+4k^3-5k+8k+5-6\\=2k^3+3k-1[/tex]
The difference is [tex]2k^3+3k-1[/tex]
Option A is correct.
If the measure of angle DBC = (12x - 3), the measure of angle DBE = (5x + 12), and the measure of angle EBC = (3x + 13), find the measure of angle EBC.
Consider the below figure attached with the question.
Given:
m∠DBC = (12x - 3), m∠DBE = (5x + 12), m∠EBC = (3x + 13).
To find:
The measure of ∠EBC.
Solution:
From the figure, it is clear that,
[tex]m\angle DBC-m\angle DBE=m\angle EBC[/tex]
Putting the given values, we get
[tex](12x-3)-(5x+12)=(3x+13)[/tex]
[tex]12x-3-5x-12=3x+13[/tex]
[tex]7x-15=3x+13[/tex]
[tex]7x-3x=15+13[/tex]
[tex]4x=28[/tex]
Divide both sides by 4.
[tex]x=7[/tex]
Now,
[tex]m\angle EBC=(3x+13)^\circ[/tex]
[tex]m\angle EBC=(3(7)+13)^\circ[/tex]
[tex]m\angle EBC=(21+13)^\circ[/tex]
[tex]m\angle EBC=34^\circ[/tex]
Therefore, the measure of angle EBC is 34 degrees.
A ski jump rises 3ft over a run of 7ft what is the length of the surface of the jump?
Answer:
7.6158 feet
Step-by-step explanation:
The rise and run form the shorter sides of a right triangle with the hypotenuse as the surface (see figure)
Hypotenuse (surface length) is given by the Pythagorean formula
[tex]c = \sqrt{a^2 + b^2}[/tex] where c is the hypotenuse and a, b the shorter sides
Here
[tex]\sf c = \sqrt{7^2 + 3^2} = \sqrt{49 + 9} = \sqrt{58} = 7.6158\;feet[/tex]
HELP AM ABOUT TO GET AND F!!!
what is neagtive four equal r over twenty minus five
Answer:
r=-20
Step-by-step explanation:
if you need any other help lmk!
Answer:
Step-by-step explanation:
r=20
need any help just text me
rationalize the denominator of 3/4√3
please give me answer
Answer:
[tex]\dfrac{\sqrt3}{4}[/tex]
Step-by-step explanation:
The given expression is :
[tex]x=\dfrac{3}{4\sqrt{3} }[/tex]
Multiplying both numerator and denominator by [tex]\sqrt{3}[/tex],
[tex]x=\dfrac{3}{4\sqrt{3} }\times \dfrac{\sqrt{3} }{\sqrt{3} }\\\\=\dfrac{3\sqrt3}{4\times 3}\\\\=\dfrac{\sqrt3}{4}[/tex]
So, the rationalized form of the given expression is [tex]\dfrac{\sqrt3}{4}[/tex]
steven has 5 more marbles than jon has, suppose s is the number of marbles that steven has, and j is the number of marbles that jon has. a. write an equation to describe how many marbles steven has. b. write a different equation to describe how many marbles jon has.
(11a-8b) - (13a-9b) when simplified is
Answer:
[tex]-2a+b[/tex]
Step-by-step explanation:
[tex]\left(11a-8b\right)-\left(13a-9b\right)\\11a-8b-\left(13a-9b\right)\\11a-8b-13a+9b\\11a-13a-8b+9b\\-2a-8b+9b\\-2a+b[/tex]
Yesterday I drank 16 cups of coffee. Today I drank 82% more cups. How many cups of coffee did I drink today?
Answer: 29.12 cups of coffee
Step-by-step explanation:
16 cups of coffee x 0.82 = 13.12
13.12 + 16 = 29.12
Looking at this graph, what are the coordinates of the two points in Quadrant II?
Make sure you write them correctly as an ordered pair (x, y).
Add a space between the two pairs. Also, remember to put a space after the commas.
m
Answer:
In quadrant II -
Top point: (-2, 3)
Bottom point: (-3, 1)
Step-by-step explanation:
hope this helps :)
Triangle PQR is transformed to similar triangle P'Q'R':
What is the scale factor is diliation?
1.) 1/2
2.) 1/3
3.) 1/4
4.) 1/5
Answer:
1/3 hope this helps!!!
Solve the inequality for .x.
1
=x
6
+4>-3x-8
Simplify your answer as much as possible.
We need to know about inequality to solve this problem. The solution of the inequality is x>-4/3.
Inequality represents the comparison between two unequal expressions. Two expressions can be related to each other as greater than, less than,greater than or equal to or less than or equal to. While solving inequality we always have to keep in mind the change of sign and corresponding change of the comparison. Here in the question we have an inequality of the variable x, we have to get a solution for x by solving this inequality.
6x+4>-3x-8
6x+3x>-8-4
9x>-12
x>-4/3
Therefore the solution set that we get from the inequality 6x+4>-3x-8 is x>-4/3.
Learn more about inequality here:
https://brainly.com/question/14361489
#SPJ9
(picture included) brainliest
Can any one help me in this please any math genius
What is the value of 1/4 - 7/8
plz hurry help fast hurry
When Jose installs a new app on his phone, it creates a square icon on his home screen. The square starts with
side lengths of 1 cm. The side lengths grow by 2.8 cm each second until the square reaches its maximum size.
What is the perimeter of the square after 1.5 seconds? Recall that the perimeter of a shape is the sum of its side
lengths.
O16.8 centimeters
O 19.2 centimeters
O 20.8 centimeters
O 29.2 centimeters
Lo
Answer:
O 20.8 centimeters
Step-by-step explanation:
Guessed on Edge and got it right.
The perimeter of the square after 1.5 seconds will be 20.8 centimeters so option (C) will be correct.
What is the perimeter?Perimeter is the addition of an external measure of sides it will always positive.
Perimeter of square = side + side + side + side
Initial side length of square = 1 cm
Rate of grow side = 2.8 centimeter per minutes
By multiplying 1.5
Rate of grow side = 4.2 centimeter per 1.5 minute
So,
New side = 1 + 4.2 = 5.2 cm
Perimeter = 4 × side
Perimeter = 4 (2.5) = 20.8 cm
Hence "The perimeter of the square after 1.5 seconds will be 20.8 centimeters".
To learn more about Perimeter,
https://brainly.com/question/6465134
#SPJ2
G is the centroid of tiangle ABC, AB = AC, AD= 15, CG= 13, and AD is perpendicular to CB. Find the length of the segment.
Answer:
AG=13
AB=AC
AD is | to BC
CG=BG
line segments is BG or GB
-8(6x+12)=-32x-24 SHOW YOUR WORK PLS whats x
Answer:
x= -9/2
Hope I helped
Answer:
[tex]x=-\frac{9}{2}[/tex]
Step-by-step explanation:
Simplify the given equation by solving for x. Isolate the x variable in:
[tex]-8(6x+12)=-32x-24[/tex]
Expand the left side by using the distributive property. Remember that when a negative and positive are multiplied, the result is always negative:
[tex]-8(6x)-8(12)=-32x-24\\\\-48x-96=-32x-24[/tex]
Use inverse operations to isolate the variable. Add 96 to both sides, canceling out the -96 on the left:
[tex]-48x-96+96=-32x-24+96\\\\-48x=-32x+72[/tex]
Add 32x to both sides to isolate x:
[tex]-48x+32x=-32x+32x+72\\\\-16x=72[/tex]
Now divide both sides by 16:
[tex]\frac{-16x}{16} =\frac{72}{16} \\\\-x=\frac{9}{2}[/tex]
Make the variable positive by multiplying both sides by -1:
[tex]-1(-x)=-1(\frac{9}{2})\\\\x=-\frac{9}{2}[/tex]
:Done
Note:
You do the same thing to both sides in order to keep the equation balanced. Using the opposite value of a term cancels it out, moving it to the other side.
can someone help ASAP
Answer:
a. y = -3x+[tex]\frac{1}{2}[/tex]
b. y = -2
Step-by-step explanation:
The equation for a line is y=mx+b (m= the slope b= the y-intercept) Simply insert the variables into the equation.
Please help asap! if you could also explain how you did it so I can answer the other questions by myself
Answer:
Step-by-step explanation:
true
PLEASE SOLVE i wiLL MARK BRainLiest PLSPLS
Answer:
(-1, 2 ,4, 6, 6.9, 6.99, 6.999)
Step-by-step explanation:
The < symbol means less than. The inequality r < 7 means r can be any number less than 7.
That means any value less than 7 would make the inequality true. Any value equal to or greater than 7 would be incorrect and make it false.
−4x+5−x−2
what is x?
Answer:
−4x+5−x−2= 28
Step-by-step explanation:
−4x+5−x−2 = 28
-5x+3=28
-5x=25
x= -5
Consider the number lines shown below which shows jump from one number to another. There are four different arrows, starting from the number . Match the number lines given in the first column with the correct mathematical expression that results in the number on the other side of the arrow. Number line 1 Number line 2 Number line 3 Number line 4 Number line 1 Number line 2 Number line 3 Number line 4 DRAG & DROP THE ANSWER −45−20+5-45-20+5−45−20+5 −45+10+5-45+10+5−45+10+5 −45+30−20-45+30-20−45+30−20 −45+35−15-45+35-15−45+35−15
Answer:
Step-by-step explanation:
Its number line 2.
whet is 2y+14x-7x+9y
Answer:
Step-by-step explanation:
2y + 14x - 7x + 9y
2y + 9y + 14x - 7x
11y + 7x
Answer:
11y+7x
Step-by-step explanation:
because you combine like terms which is 14x - 7x which is 7X and 9y plus 2y which is 11y so 11y plus 7x is the answer
Solve for x solve for x solve for x solve for x solve for x
a² + b² = c²
6² + 3² = c²
36 + 9 = c²
45 = c²
[tex] \sqrt{45} = c[/tex]
[tex] \sqrt{5 \times 3 \times 3} = c[/tex]
[tex] \sqrt{5} \times 3 = c[/tex]
[tex]3 \sqrt{5} = c[/tex]
I WILL GIVE A BRAIN LIST TO THE FIRST PERSON WHO ANSWERS!!!!!!!
Compare the pair of numbers. Use .
three-fourths ___ start fraction 33 over 40 end fraction
A. three-fourths > start fraction 33 over 40 end fraction
B. three-fourths < start fraction 33 over 40 end fraction
C. three-fourths = start fraction 33 over 40 end fraction
I WILL GIVE BRAINLIST TO FIRST PERSON WHO ANSWERS!!!!
Answer:
its c
Step-by-step explanation:
Our denominators are 40 and 4. What we need to do is find the lowest common denominator of the two numbers. This is the smallest number that can be divided by both 40 and 4. In this case, the lowest common denominator is 40.
If we multiply the first denominator (40) by 1 we will get 40. If we multiply the second denominator (4) by 10 we will also get 40. We also need to multiply the numerators above the line by the same amounts so that the fraction values are correct:
33 x 1
40 x 1
3 x 10
4 x 10
This is what 33/40 and 3/4 looks like with the same denominator:
33
40
&
30
40
Now that these fractions have been converted to have the same denominator, we can clearly see by looking at the numerators that 33 is greater than 30 which also means that 33/40 is greater than 3/4.
Answer:
b
Step-by-step explanation: