Answer:
volume = mass / density
volume = 720 g / 18 g/cm³
volume = 40 cm³
Step-by-step explanation:
PLEASE HELP ME SOLVE BOTH
30 POINTS!!!
Answer:
1) x = 4
2) a square root cannot be equal to a negative value
Step-by-step explanation:
1) add 1 to each side
2) square each side
(√2x + 1)² = 3²
2x + 1 = 9
2x = 8
x = 4
2) subtract 4 from each side
√2x + 1 ≠ -5
- 6 + \sqrt{9 - 8a} = 1−6+
9−8a
=1
Answer:
[tex]a = -5[/tex]
Step-by-step explanation:
Given
[tex]- 6 + \sqrt{9 - 8a} = 1[/tex]
Required
Solve for a
[tex]- 6 + \sqrt{9 - 8a} = 1[/tex]
Add 6 to both sides
[tex]6- 6 + \sqrt{9 - 8a} = 1+6[/tex]
[tex]\sqrt{9 - 8a} = 7[/tex]
Square both sides
[tex]( \sqrt{9 - 8a})^2 = 7^2[/tex]
[tex]9 - 8a = 49[/tex]
Subtract 9 from both sides
[tex]9-9 - 8a = 49-9[/tex]
[tex]- 8a = 40[/tex]
Make a the subject
[tex]a = -\frac{40}{8}[/tex]
[tex]a = -5[/tex]
answer and ill give brainliest
Answer:
1/25 or 2/5 i guess
Step-by-step explanation:
Answer:
A) 3/100
Step-by-step explanation:
3/10x1/10=3/100
if £1 = 0.864 Lt, work out the amount, to the nearest penny , that 1 Lt is worth
Answer:
[tex]1\ Lt = \pounds 1.157[/tex]
Step-by-step explanation:
Given
[tex]\pounds 1 = 0.864\ Lt[/tex]
Required
Determine the worth of 1 Lt
[tex]\pounds 1 = 0.864\ Lt[/tex]
Divide both sides by 0.864
[tex]\pounds \frac{1}{0.864} = \frac{0.864}{0.864}\ Lt[/tex]
[tex]\pounds \frac{1}{0.864} = 1\ Lt[/tex]
[tex]1\ Lt = \pounds \frac{1}{0.864}[/tex]
[tex]1\ Lt = \pounds 1.157[/tex] -- approximated
There were two partners Fred and jack Fred can paint 3 paintings per hour, and jack can paint 2 paintings per hour Fred has already painted 9 paintings and Jack has completed 10 paintings they took a break when they finished the same total number of paintings how many paintings did they each make in total? How long will it take each painter?
Answer:
bbbdbrhrhfhdbfhfhchchfhffh
can someone help me ?
Answer:
What question are you referring to? a question references question 5 and 6 which aren't displayed.
Find the slope of the line through each pair of points(-13,-18),(0.-17)
Find the slope of the line through each pair of points(-18,-9),(-17,-16)
Find the slope of the line through each pair of points(8,18),(-13,20)
Find the slope of the line through each pair of points(7,-10),(3,-10)
Find the slope of the line through each pair of points(-17,-15),(-17,10)
Find the slope of the line through each pair of points(-1,-13)(6,-12)
Please help with this question asap
Answer:
36/5
Step-by-step explanation:
Did it in my head, hopefully its correct
please help me thank you in advance!
Answer:
D) [tex](x-4.5 )^{2} =16.25[/tex]
Step-by-step explanation:
Explanation
Given that the equation
x² - 9 x +11 =7
[tex]x^{2} -\frac{9}{2} (2x) +11=7[/tex]
[tex]x^{2} -\frac{9}{2} (2x) +(\frac{9}{2} )^{2} -(\frac{9}{2}) ^{2}+ 11=7[/tex]
By using (a-b)² = a²-2ab+b²
[tex](x-\frac{9}{2} )^{2} -(\frac{9}{2}) ^{2}+ 11=7[/tex]
[tex](x-\frac{9}{2} )^{2} -(\frac{9}{2}) ^{2}+ 11-7=0[/tex]
[tex](x-\frac{9}{2} )^{2} -(\frac{81}{4}) + 4=0[/tex]
[tex](x-\frac{9}{2} )^{2} +(\frac{-81+16}{4}) =0[/tex]
[tex](x-4.5 )^{2} -16.25 =0[/tex]
Final answer:-
[tex](x-4.5 )^{2} =16.25[/tex]
The sales tax in Texas is 8.25% and an item costs $600. How much is the tax?
Answer:
49.5
Step-by-step explanation:
how many triangles can be constucted measuring 60°, 60°, and 40°
Answer:
None, the sum of those angles does not equal 180 degrees
Answer:
none of the traingle can be constructedThe answer of this question is none. The sum of these three angles is 160°. So, none of the triangles can be constructed with angles measuring 60°, 60° and 40°
60°+60°+40°=160°The sum of three angles is 160°
so, none of the traingle can be constructed with angles measuring 60°,60°and 40°.
Step-by-step explanation:
Hope it is helpful....
find the maximum and minimum values of the function y=1/2 sin2x
Answer:
Maximum value equals 1/2
Minimum value equals -1/2
Step-by-step explanation:
The Sin Function when Graphed Shows a Range of [-1 , 1]
apply that on y=1/2 sin2x
y = 1/2 * 1 = 1
y = 1/2 * -1 = -1
so y = 1/2 , -1/2 .
Another Method using 1st derivativedy/dx = 2 * 1/2 * cos2x
put dy/dx=0
cos2x=0
x= 45, x=135
Apply x values on y=1/2 sin2x
y = 1/2 , -1/2 .
Hope you understand it ^^.
Answer: A
Step-by-step explanation:
Darren makes $10 per hour. Next semester, he will be making
$14 per hour. What rate of increase does this represent?
4%es la tasa de aumento
Greta currently works 45 hours per week and earns a weekly salary of $729. She
will soon be starting a new job where her salary will be increased by 10% and her
hours reduced by 10%.
How much more will she be earning per hour at her new job?
Answer:
Step-by-step explanation:
current rate = $729/(45 hours) = $16.20/hour
increased salary = 1.10×$729 = $801.90
decreased hours = 0.90×45 = 40.5
increased rate = $801.90/(40.5 hours) = $19.80/hour
increase in rate = $19.80/hour - $16.20/hour = $3.60/hour
triangle inequality proof
/a + b/ ≤ /a/ + /b/
Answer:
a^2+b^2+2|a||b|≥a2+b2+2ab(|a|+|b|)2≥|a+b|2(∵∀x∈R;x2=|x|2)∴|a|+|b|≥|a+b|\
Step-by-step explanation:
Which is the better deal?
$4.09 for 4 kg
$6.19 for 6 kg
Answer:
$4.09 for 4kg
Step-by-step explanation:
4.09/4 is less than 6.19/6
Answer:
4.09 for 4kg
it would be a better deal bc it will b 1.0225 for each and for 6 it would be 1.0316
Hope this helps
i to the power of 121 is equal to what
Answer:
1
Step-by-step explanation:
Hope this helps and have a great day!!!!!
What is the value of the expression 4 × (2a − 1) if a = 3?
A16
B20
C23
D25
460 000 X 500 000
In Scientific notation
Answer:
2.3 x 10^11
Step-by-step explanation:
Swimming pool was 9 meters wide with an area of 90 square.What is the length of the pool?
Answer:
90/9 = 10, the length of the pool. This can be proven as 10 x 9 = 90²
Step-by-step explanation:
4. There are 9x - 7 customers in a store on Monday and 5x + 15 customers on Tuesday. What is the total number of customers for the two days? *
Answer:
14x +8
Step-by-step explanation:
9x -7 + 5x +15
9x +5x -7 +15
THERE ARE 7 CONSECUTIVE NUMBERS.
IF THE LARGEST NUMBER 15 99, WHAT
IS THE SUM OF ALL THE GIVEN NUMBENS.
Answer:
S₇ = 672
Step-by-step explanation:
If there are 7 consecutive numbers and the largest is 99, then there are 6 smaller consecutive numbers:
Smallest number = 99-6 = 93
The sequence is 93, 94, 95, 96, 97, 98, 99.
Where:
a₁ = 93
an = 99
n = 7
Sum of the sequence:
Sn = n/2(a₁ + an)
S₇ = 7/2 (93 + 99)
S₇ = 7/2 (192)
S₇ = 7(96)
S₇ = 672
2, 6, 14, 39, 49, 5, 54, 47, 41, 55, 8, 47, 23, 6
What is the outliers?
Answer:
I think the outliers are 2, 5, 6, and 6. Not sure about 8 though
Please help I’ll give brainleist
A flagpole casts a shadow that is 11 feet long. At the same time, a girl standing nearby who is 3 feet tall casts a shadow that is 2 feet long. How tall is the flagpole to the nearest foot?
Answer:
17 feetStep-by-step explanation:
The two shadows are parallel lines and are part of similar triangles formed.
Corresponding sides of similar triangles have same ratio. Let the length of the flagpole be x.
Then we have ratios:
x/11 = 3/2x = 11*1.5x = 17 feet (rounded up)COMPLETE THE TABLE!!!!!!!!!!!
Answer:
4, 5, 6, 7
Step-by-step explanation:
Arithmetic sequence
Answer:18
Step-by-step explanation:
Note: Mathematicians start counting at 1, so by convention, n=1 is the first term. So we must define what the first term is. Then we have to figure out and include the common difference.
Taking a look at the examples again,
Sequence: 1, 2, 3, 4, … | Formula: a(n) = n + 1 | Recursive formula: a(n) = a(n-1) + 1, a(1) = 1
Sequence: 3, 8, 13, 18, … |Formula: b(n) = 5n - 2 | Recursive formula: b(n) = b(n-1) + 5, b(1) = 3
A)
450 mm2
B)
67,500 mm2
C)
600 mm2
D)
150 mm2
Answer:
im pretty sure its c
Step-by-step explanation:
solucion plis 4x- 2x > -8 -6
The answer is,
[tex]x > - 7[/tex]
hope it helps.
Answer:
x>-7
Step-by-step explanation:
4x-2x>-8-6
-2x>-14
x>-7
Please help me solve and explain these two questions:
1. Find f'(x) for f(x) = ln(x^2 + e^(3x))
2. Find dy/dx by implicit differentiation for ysin(x) = xsin(y)
Answer:
go by basics u will get it easier
Step-by-step explanation:
assume X2 + e3x as some function t
now find derivative you get (1/t )dt/dx
now find dt /dx. simply derivative with respect to x
for second question use formula
dy/dx = - partial derivative of function with x / partial derivative of function with respect to y