Answers
a = 21
Answer:
[tex] \frac{a}{7} + \frac{a}{3} = 10 \\ \frac{(3a + 7a)}{21} = 10 \\ \frac{10a}{21} = 10 \\ a = \frac{(10 \times 21)}{10} \\ \boxed{a = 21}[/tex]
a=21 is the right answer.Related Questions
What is the equation of the line that passes through the point (-2, 7) and has a slope of zero? A.x = 7 B.y = -2 C.x = -2 D.y = 7
Answers
Answer:
A X=7
Step-by-step explanation:
no slope so it is a horizontal line
f(x) = 5x^3 – 4x - 12
Answers
Answer: -12
Step-by-step explanation:
Five less than three times the length L.
Answers
Is this what you are looking for ?
Determine the resulting polynomial:
f(x) = x + 10
g(x) = -22 – 2x – 4
Find: f(x) g(x)
Answers
Answer:
-x³-12x²-24x-40
Step-by-step explanation:
f(x)=(x+10)
g(x)=-x²-2x-4
f(x)*g(x)=(x+10)(-x²-2x-4)
x(-x²)+x(-2x)+x(-4)+10(-x²)+10(-2x)+10(-4)
-x³-2x²-4x-10x²-20x-40
-x³-12x²-24x-40
5x−4y=34
−x+8y=22
elimination
Answers
Answer:
The solution to the system of equations is:
[tex]x=10,\:y=4[/tex]
Step-by-step explanation:
Given the system of equations
[tex]\begin{bmatrix}5x-4y=34\\ -x+8y=22\end{bmatrix}[/tex]
Multiply -x+8y=22 by 5: -5x+40y=110
[tex]\begin{bmatrix}5x-4y=34\\ -5x+40y=110\end{bmatrix}[/tex]
so adding the equations
[tex]-5x+40y=110[/tex]
[tex]+[/tex]
[tex]\underline{5x-4y=34}[/tex]
[tex]36y=144[/tex]
solve 36y = 144 for y:
[tex]36y=144[/tex]
divide both sides by 36
[tex]\frac{36y}{36}=\frac{144}{36}[/tex]
Simplify
[tex]y=4[/tex]
For 5x-4y=34 plug in y=4
[tex]5x-4\cdot \:4=34[/tex]
[tex]5x-16=34[/tex]
Add 16 to both sides
[tex]5x-16+16=34+16[/tex]
Simplify
[tex]5x=50[/tex]
Divide both sides by 5
[tex]\frac{5x}{5}=\frac{50}{5}[/tex]
Simplify
[tex]x=10[/tex]
Therefore, the solution to the system of equations is:
[tex]x=10,\:y=4[/tex]
Eric is told by his doctor that he needs to lose 15 pounds. If Eric now weights 285 pounds,then by what percentage should Eric weight decrease?
Answers
Answer:
5.26%
Step-by-step explanation:
15/285=x/100. 15 is the amount of weight he wants to lose. x=5.26%
last question for the day
Answers
Answer:
a
Step-by-step explanation:
Can anyone help me with this please
Answers
Answer:
no linear function hope this helped
If a item goes from 1.50 to 2.20 what's the percent increase
Answers
HELP ASAP!!! Due at 11:59
Answers
Hope this helps!
There are 8 cookies in each box. Rhyan ate 6 from her box and Juan ate 4 from his box. How many boxes of cookies did they eat altogether?
Answers
600×4 what is it hhhhhhhhhhhh
Answers
Answer:
2400
Step-by-step explanation:
Simplifying Radicals pls help with full calc
Answers
Answer:
√98=√2×7×7=7√2
√16b^5=√4×4×b×b×b×b×b=4b²√b
√26x2=√13×2×2=2√13
hope it helps.
Can someone help me ?
Answers
Answer:
Step-by-step explanation:
Given
let the unknown angle be x then,
with reference angle x
perpendicular(p) = 3
base(b)= 9
now
tan x = p/b
tan x = 3 / 9
tan x = 1 / 3
x = tan ^-1( 1/3)
x = 18.43°
hope it will help u :)
Can anyone help me with this question please.
Answers
Help ASAP this math is really hard to me im trusting yall
Answers
Answer:
it should be c
Step-by-step explanation:
Answer:
The anser is C
Step-by-step explanation:
both are equal to 12
Soos is spending money at an average rate of $5 per day. After 9 days, he has $25 left.
How much money did Soos have at the beginning (on day 0)?
y - 5= 9(x - 25)
Answers
Answer:
$70
Step-by-step explanation:
According to the problem, calculation of given data are as follows:
Spending money at rate = $5 per day
After 9 days money left = $25
We can calculate the money on day 0 by using following formula,
y = mx + b
Here, y = money left after 9 days
m = rate of spending money
x = number of days
b = money on day 0
So, by putting value, we get
$25 = (-5 × 9 ) + b
b = $25 + $45
= $70
The height of a door is about?
A) 5 Feet
B) 7 Feet
C) 16 Feet
D) 12 Inches
E) 36 Inches
Answers
Answer:
B
Step-by-step explanation:
:0 : )
114 points on the coordinate plane below which point would lie on both the X axis and the Y axis?
Answers
Answer:
(0, 0 )
Step-by-step explanation:
The point at the origin, where the x and y axes meet is on both
The coordinates of the origin are (0, 0 )
Please help due in 5 minutes
Answers
Answer:
the first one belongs to 1 and the second one belongs to 2
Step-by-step explanation:
I need this really fast in like 2 min
2 + 5x – 3 – 2 + 4x = 15
Answers
Answer: x=2
Step-by-step explanation:
Find the value of x.
110°
X + 116
Answers
PLEASE HELP! ITS DUE TODAY!!!
Answers
Answer:
Step-by-step explanation:
1.24 * 0.15 = 0.0186
As you can see, the numbers are the same, but the order of the decimal is different.
Since the order of the decimal is different, so will the answer.
1,860 and 0.0186 do have the same numbers in them, but since the decimal is located in different spots, then the answer will be different with different values.
You might not see the decimal in 1,860, but it is after the 0.....
1,860.0 ( same thing just added a decimal, but it is the same value)
Hope this helped!
Have a supercalifragilisticexpialidocious day!
Hi I'm looking to solve this question for my work but I'm super stuck and I need help asap. Thsnks
6w = 4w + 9
Answers
Find the greatest common factor (GCF) for each pair of numbers.
9 and 33
Answers
Answer:
3
Step-by-step explanation:
Write the factors for each term
9 = 1,3,9
33 = 1,3,11,33
The greatest common factor is 3
Given that DE, DF, and FE are the lengths of mid-segments, what is the perimeter of the triangle ABC?A)23B)32C)46D)69
Answers
Answer: 46
Step-by-step explanation:
A hot air balloon holds 2,200 cubic meters of helium. The density of helium is 0.1785 kilograms per cubic meter. How many kilograms of helium does the balloon contain, rounded to the nearest tenth of a kilogram?
Answers
Answer:
392.7
To get the answer multiply Density * Volume
Mass = 0.1785 * 2200
Mass = 392.7
The mass of the helium with a density of 0.1785 kilograms per cubic meter and volume of 2,200 cubic meters is 392.7 kg
What is density?
The density of a substance is its mass per unit volume. It can be represented mathematically as follows:
density = mass / volume
Therefore,
mass of the helium = ?
density of the helium = 0.1785 kilograms per cubic meter
volume of helium = 2,200 cubic meters
Therefore,
mass = density × volume
mass = 0.1785 × 2200
mass = 392.7 kg
learn more on density here: https://brainly.com/question/4504994
#SPJ2
Divide these fractions
2/3 = 3/4
Answers
Answer:
8/9
Step-by-step explanation:
I'm pretty sure after you make it a reciprocal you multiply it
Type the missing number in this sequence:
1, 2, 5, 10, , 26, 37, 50
Answers
I just need help solving for A
Answers
Answer:
115
Step-by-step explanation: