Answer: Add the two equations together to eliminate y
Step-by-step explanation:
X+y=3
4x-y=7
I would use elimination since one equation has +y and one equation has -y
Add the two equations together
X+y=3
4x-y=7
-------------------
5x = 10
Find the length of the tangent segment AB to the circles centered at O and O' whose radii are a and b respectively when the circles touch each other
Answer:
[tex]AB=2\sqrt{ab}[/tex]
Step-by-step explanation:
From figure,
[tex]OA=a, \quad \quad O'B=b\\\Rightarrow OO'= (a+b) \quad \quad \text{and}\quad OD=(a-b)[/tex]
In triangle [tex]OO'D[/tex]
[tex](OO')^2=(OD)^2+(O' D)^2[/tex]
[tex]\Rightarrow (a+b)^2=(a-b)^2+(O' D)^2\\\Rightarrow a^2+b^2+2ab-a^2-b^2+2ab=(O' D)^2\\\Rightarrow 4ab=(O' D)^2\\\Rightarrow O'D=2\sqrt{ab} \\\Rightarrow O' D=2\sqrt{ab}=AB \quad \quad [\because O' DAB\;\; \text{is a rectangle.}][/tex]
Hence, [tex]AB=2\sqrt{ab}[/tex]
3x^3-21x^2-54x multiplicity
Answer:
3x (x+2) (x−9)
(factored)
hope this helps :D
Simplify the following expression:
9^−53 ⋅ 9^37
Please also explain your answer. Thanks!
Answer:
Simplify the expression.
Exact Form:
1 /1853020188851840
Decimal Form:
5.39659527 x 10 − 16
Step-by-step explanation:
please help me with these two problems thank you!!
Answer:
1st question: y=1/3x-1
2nd question: y=-2/3x+9
Step-by-step explanation:
Y=mx+b form is what you are using
when a line in parallel to a line they have the same slop wich is m
when a line in perpendicular they have the opposite reciprocal
Examples: 2/5 opposite reciprocal would be -5/2
Six students share 8 granola bars equally. How many granola bars does each student get?
Answer:
1 whole one and a third of one.
Step-by-step explanation:
1 1/3 of a granola bar
Answer: 1.33333333333 or 1.3 as a repeating decimal
Just divide 8 ÷ 6
Can someone Help me please
Answer:
47
Step-by-step explanation:
using exterior angle property,
23+5x-1=9x+2
→20=9x-5x
→20=4x→ x=5
angle PRS= 9X +2 = 9*5 +2= 47
Let the x and y represent the tens digit and ones digit of a two digit number respectively. The sum of the digits of a two-digit number is 9. If the digits are reversed, the new number is 27 more than the original number. What is the original number?
Answer:
The Original Number is 36 :)
explanation:
A study found that 23% of the cars manufactured last year were SUVs, 13% of the cars manufactured were white, and 2% of the cars manufactured were white SUVs.
To the nearest whole percent, what is the probability that a car is an SUV, given that it is white?
9%
15%
21%
57%
Answer:
15%
Step-by-step explanation:
Which of the following equations is true for ATUX? I u A X t e tan X = O cos X = O sin X =23 O Sin X =
Answer:
second is a answer cos X= x/i
Answer:
Step-by-step explanation:
sin X = x / u
NOT THE PREVIOUS ANSWER
2 x 2 x 4 x 4 x 4 x 5 x 5 x 5 x 5 use expoments to show your work)
Answer:
16,000
Step-by-step explanation:
Solving using exponents (picture)
Answer:
2^(2)*4^(3)*5^(4)=160000
Step-by-step explanation:
Miles and kilometers are twi different scales for measuring distances. A 5-kilometer race is approximately 3.1 miles, and a 10-kilometer race id approximately 6.2 miles. Write an equation that shows the approximate distance in kilometers as a function if the distance in miles
Answer:
[tex]x=\dfrac{y}{0.62}[/tex]
Step-by-step explanation:
[tex]5\ \text{km}=3.1\ \text{miles}\\\Rightarrow 1\ \text{km}=\dfrac{3.1}{5}=0.62\ \text{miles}[/tex]
[tex]10\ \text{km}=6.2\ \text{miles}\\\Rightarrow 1\ \text{km}=\dfrac{6.2}{10}=0.62\ \text{miles}[/tex]
Let [tex]y[/tex] be the distance in miles. So distance in km is given by
[tex]x=\dfrac{y}{0.62}[/tex].
The equation that shows the approximate distance in kilometers as a function if the distance in miles is [tex]x=\dfrac{y}{0.62}[/tex].
Find the selling price.
Cost to store: $140
Markup: 25%
The selling price is $
Find the selling price.
Cost to store: $80
Markup: 60%
The selling price is $
Find the selling price.
Cost to store: $50
Markup: 10%
The selling price is $
Answer:
1.$175
2.$128
3.$55
Step-by-step explanation:
1.
40×.25=35
140+35=175
2.
80×.6=48
80+48=128
3.
50×.1=5
50+5=55
Answer:
1 87.5
2 49.7
3 0.79
4 700
5 4.8825
6 24
7 10
explanation:
sana makatulong
Which of the following changes in a dilation? (Help fast please)
A. shape
B. slope
C. size
D. angle measures
Answer:
C. size
Step-by-step explanation:
A dilation does not change the shape of a figure, but it can change the size.
Deshawn earned $48 raking leaves last October. He decided to save 38 of his money. How much money did Deshawn save?
Answer: I don't know i'm taking a benchmark about that question an that pop up
Step-by-step explanation:
Answer:
Step-by-step explanation:
Therefore, you would multiply 48/1 * 3/8 and that will give you your answer. 48/1 * 3/8 = 144/8, which is 144 divided 8. And that comes out to be 18, so Deshanwn saved $18.
Hope this helps
Round 344,501 to the nearest ten thousand
Answer:
340,000
Step-by-step explanation:
340e3
200 ÷ 70 ONLY THE ANSWER AND REMAINDER IF THERE IS.
Answer:
2 remainder 60!
Step-by-step explanation:
Similar
Not Similar
Please help please
Answer:
I dont think thats similar
Step-by-step explanation:
y = 5x + 14
what is the CROC (Constant Rate Of Change)?
and how do you know. (please help i've been stuck on this for about an hours now :,). )
Answer:
The answer is 5.
Step-by-step explanation:
Well if you were to graph this equation you'll see that the rise over run would be 5/1 which simplifies to 5.
HELP NEEDED ASAP!!!!!
Which point IS a solution?
A: (0,6)
B: (-3,4)
C: (1,0)
D: (-4,3)
Answer: (-3, 4)
Step-by-step explanation:
The point at which both lines intersect is (-3, 4)
And since they intersect at ONE point, it just has one solution.
Hope I helped!
If the diameter of a circle is 80m, then what is the radius of the circle
Answer:
40m
Step-by-step explanation:
Radius is half of diameter
The sum of two numbers is 57 and the difference is 23 what are the numbers?
Answer:
40 and 17
Step-by-step explanation:
40 + 17 = 57
40 - 17 = 23
Not much of an explanation but hope it helps!
A table of equivalent ratios is given.
What is the missing number in the table?
Answer:
It's 30
..................
they all are equal to 1:3
so 90/3=30
answer is 30 !
Val is in a race that has a 2 10-mile swim and a 26 10-mile run. How far does Val
swim and run altogether?
28 miles
28 miles
28 miles
29 miles
Step-by-step explanation:
bdhdhjndnfdndnnskdkdkskdkdkd
A cube is cut in to three parts by vertical slices find the volume of the shaded area The length and width of original is 20 cm and cut part is 10 cm
Answer:
4000 cm^3
Step-by-step explanation:
Note that no image was attached for reference purposes
Step one:
We are given that the original length and width of the cube is 20cm
if the cut part is 10cm
hence the dimension of the cut part is
lenght = 20cm
Width= 20cm
Hieght= 10cm
Step two:
the volume of the cut part will be
Volume= 20*20*10
Volume= 4000 cm^3
PLEASE HELP!!!!
What is the average between 0.0, 1.2, 2.8, 4.2, 16.34
Answer:
4.904
Step-by-step explanation:
To find this, add all of the numbers up then divide by however many numbers there is
All numbers equal 24.52 the divide by 5
Help pls. Rauls classmates evaluated Raul’s conjecture as to whether it was true or false and gave a reason. Which response is correct?
A super clearance sale, bathing suits were marked 85% off. What is the sale price of a bathing suit that was originally priced $60 ?
simplify the equation(-3)^-4
Answer:
-12
Step-by-step explanation:
which description is correct?
an increase by 5/6
a decrease by 5/11
Answer:
a decrease by 5/11 I beleive.
What is the answer in a whole number or decimal
Answer:
i = 8
Step-by-step explanation: