Answer:
(-5,2)
Step-by-step explanation:
Using elimination:
Multiply x+9y=13 by -2 which would equal -2x-18y=-26
Then you add the two question together
2x+3y=-4 + -2x-18y=-26
Since 2x-2x=0, you can cross them out
3y+(-18y)= -15y
-4+-26 =-30
You are now left with -15y=-30
Then you divide both by -15
Your answer is y=2, now you need to find x by plugging y into one of the equations
x+9(2)=13
x+18=13
Subtract 18 from both sides
x=-5
(sorry if this is confusing or too long)
The mean of 5 numbers is 11. the numbers are in the ratio 1:2:3:4:5 find the smallest number?
The smallest number is x = 11/3. The smallest number in the given ratio of 1:2:3:4:5 whose mean is 11 is 11/3.
Given that the mean of 5 numbers is 11. The numbers are in the ratio 1:2:3:4:5. We need to find the smallest number. We can start solving the problem by following these steps:
Step 1: Let us assume the smallest number to be x.
Step 2: According to the question, the numbers are in the ratio 1:2:3:4:5. Hence, the other four numbers can be written as 2x, 3x, 4x, and 5x.
Step 3: The mean of these 5 numbers is given as 11.
Therefore, we can write:(x + 2x + 3x + 4x + 5x)/5 = 11.
Step 4: Simplifying the above equation, we get:15x/5 = 11x = 11/3.
Step 5: Therefore, the smallest number is x = 11/3.
The smallest number in the given ratio of 1:2:3:4:5 whose mean is 11 is 11/3.
For more question on ratio
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The sum of the 1st nth term gp is 127.the sum of the reciprocal is 127/64,if the 1st term is 1.find n and the common ratio
Answer:
r=2,n=7
Step-by-step explanation:
The formula for the sum of the nth term of a Geometric Progression is given as:
Sn = a(1-r^n)/(1-r)
Where n = Number of terms
r = Common ratio
From the above question, we are told that:
The sum of the 1st nth term gp is 127.
Hence:
127 = 1(1-r^n)/(1-r)
We are also told that:
The sum of the reciprocal is 127/64
This means the inverse, the formula is given as:
Sn = 1/a(1-r^n)/(1-r)
127/64 = 1(1-1/r^n)/(1-1/r)
= r^(1-n)(1-r^n)/(1-r)
Solving the above, we obtain:
r^(n-1) = 64
r^(n-1) = 2⁶
Hence:
r = 2
Solving for n
n - 1 = 6
n = 6 + 1
n = 7
Therefore:
r=2,n=7
what is the square root of 7686.3652736?
Answer: 87.6719183867
Step-by-step explanation:
Exact Form: √ 7686.3652736
Decimal Form: 87.67191838 …
Step-by-step explanation: The radical cannot be simplified, but it can be approximated.
Give me brainliest or a thank you pls :)
What is the slope of the line that
passes through these two points?
(-4, 6)
(-4,-2)
Remember. Slope is
a) 0
rise (y2-yı)
run (x2-x1)
c) undefined
b) 1/3
d) -3
Answer:
undefined
Step-by-step explanation:
( -4, 6) & (-4, -2)
To find the slope of the line, we use the slope formula: (y₂ - y₁) / (x₂ - x₁)
Plug in these values:
(-2 - 6) / (-4 - (-4))
Simplify the parentheses.
= (-8) / (-4 + 4)
= (-8) / (0)
Simplify the fraction.
-8/0
= undefined
This slope is undefined because you cannot divide a number by 0. These points also fall on a vertical line, which has an undefined slope.
Hope this helps!
Saephan walked 400 feet per minute.
What was his speed in feet per hour?
Dennis has to take a short multiple choice quiz that 4 questions and each question has 4 answer choices. What is the probability he gets all 4 questions incorrect?
Answer:
3/4?
Step-by-step explanation:
Simplify.
Remove all perfect squares from inside the square root.
[tex]\sqrt{63}[/tex]
Answer:
[tex]3 \sqrt{7} [/tex]
Step-by-step explanation:
1) Rewrite 63 as its prime factors.
[tex] \sqrt{3 \times 3 \times 7} [/tex]
2) Group the same prime factors into pairs.
[tex] \sqrt{(3 \times 3) \times 7} [/tex]
3) Rewrite each pair in exponent form.
[tex] \sqrt{ {3}^{2} \times 7 } [/tex]
3) Use this rule
[tex] \sqrt{ {x}^{2} } = x[/tex]
[tex]3 \sqrt{7} [/tex]
+
The sum of ages of Paula and her mother is 48.
Her mother is 12 years more than twice as old as Paula. Use a linear system to
determine the ages of Paula and her mother.
Answer:
Step-by-step explanation:
It’s 12
Please Help with this question!!
Answer:
The answer is C.
Step-by-step explanation:
Parallel lines m and n are cut by a transversal t. Which two angles are corresponding angles? A. 1 and 5 B. 1 and 6 C. 1 and 2 D. 1 and 7
Answer:
1 and 5
Step-by-step explanation:
So basically corresponding angles are the angles which lie on the same line of the transversal
And also one of them will be an interior angle and the other a exterior angle
Answer:
D
Step-by-step explanation:
A cone and its dimension are shown in the diagram. Find the volume of the cone in cubic feet.
Answer:
[tex]\pi/4[/tex]
Step-by-step explanation:
The volume of a cone is [tex]\pi r^2h/3[/tex]. We have that [tex]r=1[/tex] and [tex]h=3/4[/tex]. Therefore, the volume is [tex]\pi/4[/tex].
Which of the
following points
would be a solution
to this system of
linear inequalities?
help me out please
The pic is attached.
Answer:
(-2, -4)
Step-by-step explanation:
The solution to a system of equations is an ordered pair. In order to be a solution to a system of inequalities, it has to be in the shaded area of both lines. Since both lines are shaded below the lines, the point has to be in that middle area where both the green and purple shades overlap. (-2, -4) is the only point in that picture that is in that overlapping shaded area. (-4, -1) is only in the green shaded area.
Find the area of the regular pentagon with side 10 cm and an apothem of 7.8 cm.
Answer:
78cm
Step-by-step explanation:
multiply 10 and 7.8
Question 1
A sweater was originally $38.00, but the department
store is running a 15% off sale. What is the sale price of
the sweater?
Answer:
$32
Step-by-step explanation:
It’s a. 8* and pls pls help meee
Answer:
x = 1.5
Step-by-step explanation:
Since they are corresponding angles, they equal to themselves
8x + 13 = 12x + 7
Subtract 12x from both side
-4x + 13 = 7
Subtract 13 from both side
-4x = -6
Divide by -4
x = 1.5
Answer:
20x=20
Step-by-step explanation:
8x+13+12x+7
(8x+12x)+(13+7)
20x+20
Josie is saving money to purchase a new pair of shoes. She has already saved $5 and will earn $0.50 for each chore she completes. Graph the relationship between number of chores Josie completes and the total amount she will have saved.
Answer:
The graph would be y=0.5x+5
Step-by-step explanation:
0.5 is the slope since it can change anythime and 5 stays the same so therefore it is the y-intercept. :)
Events AA and BB are independent. P(A\ \mathrm{and}\ B)=0.25P(A and B)=0.25 Enter possible probabilities for events AA and BB.
Answer:0.5, 0.5
Step-by-step explanation:
Given
[tex]P(A\cap B)=0.25[/tex]
Also, A and B are independent events. So, we can write that
[tex]P(A\cap B)=P(A)\times P(B)[/tex]
[tex]0.25=P(A)\times P(B)[/tex]
So, the two most possible value of [tex]P(A)\ \text{and}\ P(B)[/tex] are [tex]0.5\ \text{and}\ 0.5[/tex]
Find the accumulated Value of 5,000
investment which is invested for 8 years at an
interest
rate of 12% compounded
Which is a man-made resource?
Answer:
a house?
Step-by-step explanation:
What is the answer for this problem?
Answer:
answer c for question 9 answer
Determine the center and radius of the following circle equation:
x2 + y2 + 4x + 20y + 68 = 0
Answer:
center( -2,-10)
radius:6
Step-by-step explanation:
I hope this helps.
David uses 1/4 cup of apple juice for every 1/2 cup of carrot juice to make a fruit drink . Enter the number of cups of apple juice David uses for 1 cup of carrot juice. HELP ME PLSSS!!!!
Answer:
1/2 cup
Step-by-step explanation:
1 cup is equal to 2 1/2 so that means you use 2 times 1/4 which is 2/4 cups which is equal to 1/2
Answer:
1/2 cup of apple juice
Step-by-step explanation:
Hi,
1/4 cup of apple juice = 1/2 cup of carrot juice
We're trying to find the number of cups of apple juice when the carrot juice is equal to a whole cup. To do this, we have to get 1/2 to a whole number. Simply multiply 1/2 by 2 to get a whole number. Here's what I mean...
1/4 cup of apple juice = 1/2 cup of carrot juice
1/2 x 2 = 1 (whole number)
So, when we have a whole cup of carrot juice we have...
1/4 x 2 (since we multiplied the 1/2 by 2, we have to do the same to the other side).
1/4 x 2 = 1/2
David will use 1/2 cup of apple juice when he makes a cup of carrot juice.
Hope this helps :)
You move down 1 unit. You end at (0, -3). Where did you start?
2. In Geometry
is a location that has no size.
O coordinate
und
O spot
point
O dot
Carmen left her house and drove 11 mi north, 16 mi east, 14 mi south, 9 mi west, and 3 mi north. How far was she from home? Carmen was miles from home.
Answer:
7 mi.
Step-by-step explanation:
If two adjacent sides of a rhombus measures 4x – 5 and 7x – 14 respectively. Find the length of each sides.
Answer:
3
Step-by-step explanation:
all sides are equal in a rhombus.
therefore,
[tex]4x - 5 = 7x - 14[/tex]
[tex]14 - 5 = 7x - 4x[/tex]
[tex]9 = 3x[/tex]
[tex]x = 3[/tex]
Can someone please help me?
Answer:
-26.5
Step-by-step explanation:
(53/|2/2|)/3(1)-5
=(53/1)/3-5
=(53)/-2
=-26.5
Round 39.711 to the nearest whole number
Answer:
40
Step-by-step explanation:
The .7 causes the 39 to round up to 40
Answer:
40
Step-by-step explanation:
Believe me or not but hope this helps
Help me this is due I dont know this answer can someone help me please.
Answer:
i think its 43?
Step-by-step explanation:
11. It took Mr. Owen 12 hours to build
a 36-foot long brick wall around the
perimeter of his garden. At what rate
did Mr. Owen build the wall? Show
your work.
Answer quick plzzz no website
Answer:
3 feet per hours
Step-by-step explanation:
To get unit rate divide foot by hours
[tex]\frac{36}{12} = 3[/tex]
Answer:
36/12 =3 so ans = 3 hours
Step-by-step explanation:
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