Simultaneous equations:
1) 3x + 2y = 23
2x - y = 6
2) 3x - 3y = 9
2x + y = 12
3) 4x + 2y = 34
3x + y = 21
(if you could answer with workings out that would be great)
Answer:
1)x=5 y=4
2)y=2 x=5
3)y=12 x=3
Step-by-step explanation:
hope that helps!
A principal of $480 earns $108 interest in 5 years . what rate of interest was being paid?
Answer:
4.5%
Step-by-step explanation:
Solving our equation
r = 108 / ( 480 × 5 ) = 0.045
r = 0.045
converting r decimal to a percentage
R = 0.045 * 100 = 4.5%/year
The interest rate required to
accumulate simple interest of $ 108.00
from a principal of $ 480.00
over 5 years is 4.5% per year.
Peter weighs 105 kg. He wants to lose 500 g per week. How many weeks will it take for him to have
a mass of 90 kg?
Answer:
It will take peter 30 weeks to weigh 90kg
Step-by-step explanation:
Answer:
30 weeks
Step-by-step explanation:
500g =0.5kg so 105-90=15
15*2=30
pls thanks
The polygons are similar. Find the scale factor from ABCD to EFGH.
Answer:
2.5
Step-by-step explanation:
45/18 = 2.5
35/24 = 2.5
40/16 = 2.5
PLEASE HELP, i'll mark the brain thingy !
Answer:
50
Step-by-step explanation:
make me brain
What is the square root of x to the 10 power
Answer:
x^5
Step-by-step explanation:
mutilply 2 3/5 x 1 3/7
Answer:3.71428571429
Step-by-step explanation:
Given the Standard Form equation y - 6x = 4
What is the slope and y intercept?
someone plz explain
Answer: 6 is the slope and 4 is the y-intercept.
Step-by-step explanation:
Based on the question, I feel this is the best way to answer your question. I'm assuming you are in a basic graphing class.
The best, most useful thing for you right now would be to learn slope-intercept form, y = mx + b, where m and b are constants.
Simply add 6x to both sides to get into this form
y = 6x + 4.
In slope-intercept form, m is the slope, and b is the y-intercept. Thus, 6 is the slope and 4 is the y-intercept.
Hope it helps and lmk if you need more <3 :)
If a hexagon is worth 5 and a triangle is worth 3, what is a circle
Answer:
6
Step-by-step explanation:
Call pentagon p, circle c and triangle t
We have 2c + 2p = 2p + 2t + c
p = 5, t = 3 so
2c + 2(5) = 2(5) + 2(3) + c
2c + 10 = 10 + 6 + c
2c = 6 + c
c = 6
6 answer
Call pentagon p, circle c and triangle t
We have 2c + 2p = 2p + 2t + c
p = 5, t = 3 so
2c + 2(5) = 2(5) + 2(3) + c
2c + 10 = 10 + 6 + c
2c = 6 + c
c = 6
i just want to know if this is correct if not Plss correct me (ZOOM IN TO SEE FULL PIC)
Answer:
A correct
B is 15 not 17
C correct
D correct
E correct
F is 10 not 3.5
Step-by-step explanation:
Answer:
Step-by-step explanation:
They are all correct except the last one f.
12.5^2-7.5^2=100
So the missing side should be 10 not 3.5
Solve the equation for x, and enter your answer in the box below.
12x = 36
Answer:
x = 3
Step-by-step explanation:
Step 1:
12x = 36 Equation
Step 2:
x = 36 ÷ 12 Divide by 12 on both sides
Answer:
x = 3
Hope This Helps :)
Find the difference: 4.9 - 2.46
Answer:
The answer is 2.44
Step-by-step explanation:
4.9 - 2.46 = 4.90 - 2.46
4.90 - 2.46 = ?. 44
4. 90 - 2.46 = 2.44
(40 POINTS) Let x = price of a standard ticket, y = price of a matinee ticket, and z = price of a senior ticket.
150x + 80y + 12z = 2,466
380x + 95y + 48z = 5,419
210x + 130y + 60z = 3,960
220x + 225y = 4,445
540x + 270y = 8,370 → y = −2x + 31
x = 11
The solutions to the system mean:
A.) Eleven tickets were sold on Friday. Nine tickets were sold on Saturday. Eight tickets were sold on Sunday.
B.) Eleven standard tickets were sold. Nine matinee tickets were sold. Eight senior tickets were sold.
C.) The price of a standard ticket is $11. The price of a matinee ticket is $9. The price of a senior ticket is $8.
Answer:
C. The price of a standard ticket is $11. The price of a matinee ticket is $9. The price of a senior ticket is $8.
Answer:
The answer is C
Step-by-step explanation:
What is the volume of the pyramid?
Answer: 484
Step-by-step explanation:
12x11x11=1,452
1,452/3=484
Determine whether AB is a median,altitude,or neither
Line AB is neither a Median nor an Altitude.
What is angle Bi-sector?In geometry, an angle bisector is a line that divides an angle into two equal angles. The term "bisector" refers to a device that divides an item or a form into two equal halves. An angle bisector is a ray that divides an angle into two identical segments of the same length.
Given, A triangle in that there is an angle bisector AB.
Since,
Median:
A median of a triangle is a line segment that joins a vertex to the mid-point of the side that is opposite to that vertex.
In our case, it is not specified if AB bisects the opposite line
Altitude:
The altitude of a triangle is the perpendicular drawn from the vertex of the triangle to the opposite side. Also, known as the height of the triangle, the altitude makes a right-angle triangle with the base.
In our case, it is not specified if AB makes a Right triangle or not.
Therefore, Line Ab is neither a Median nor an Altitude.
Learn more about angle bi-sector here:
https://brainly.com/question/18741365
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Which PERCENT is represented by the shaded area? (This is urgent!!)
Answer:
47%
Step-by-step explanation:
hope this helps
Answer:
47%
Step-by-step explanation:
47 blocks out of 100 were shaded, which makes it 47%
each piece of paper is a memo pad is a square. The length of of each side is 2 3/4 inches. What is the area of one piece. please and thank you
Answer:
approximately 7.5265in
Step-by-step explanation:
Area = length x width
2.75 x 2.75 = 7.5265in
...................help
which graph models the solution of the Inequality -6 ≤ -3x
We know that graph (B) models the solution of the given inequality -6 ≤ -3x.
What are graphs?Drawing the curve that represents a function on a coordinate plane is known as graphing a function. Every point on the curve will satisfy the function equation if the curve (or graph) represents the function.Line graphs, bar graphs, pie charts, scatter plots, and histograms are examples of common graph types. Graphs are a fantastic tool for displaying statistics and visualizing data. To depict numerical data that is unrelated to one another, a bar graph or chart may be utilized.So, in the given inequality:
-6 ≤ -3xWe know that:
Make x subject: -6/-3 ≤ xWhich is 2 ≤ x, represented in a graph (B).Therefore, we know that graph (B) models the solution of the given inequality -6 ≤ -3x.
Know more about graphs here:
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A. (−13)+(−7)= b. (−15)− (−15)= c. (2)∙ (−13)= d. (−44)÷ (11)= e. (−3)+(−5)+(8) +(25)= f. 3+4=4
Answer:
See answer below
Step-by-step explanation:
In this case, this is just sum, substraction and divisions using the properties or the signus. This is just basic operations using the negative and positive numbers.
To do this easily you just have to remember the following:
1. Numbers with same sign, must be summed and put the sign that have either number.
2. Numbers with different sign, must be substracted and then put the sign of the highest number.
3. If you have a multiplication or division:
- Same signs multiplied or dividied (Either positive or negative), result always positive.
- Different signs multiplied or dividied (positive and negative), result always negative.
Following this simple rules, you'll be able to solve almost any exercise of this.
Now, according to the rules above, let's solve the exercises:
A. (-13) + (-7)
In this case, you have two negative numbers, and one positive sign between them. Apply the 3rd rule. The negative sign remains and then:
-13 - 7
Now 1st rule applied, sum the numbers and let the same sign:
-13 - 7 = -20.
B. (-15) - (-15) = 0.
Applying 3rd rule and then 2nd rule, we have a subtration of -15 + 15.
C. (2) * (-13) = -26
Applying the 3rd rule, we have positive and negative, result always negative.
D. (-44) / 11 = -4
3rd rule applied.
E. (-3) + (-5) + 8 + 25 = 31
Applied 3rd and 1st rule.
I don't understand the f, but you can use the rules here and get the final answer of that one.
Hope this helps
Has anyone done this
1. Use the Notes Expand Linear Expression (aka Distributive Property) pg. 237 ex. 4-6 which we covered on the Edpuzzle to complete the assignment.
Assignment pg. 241 9-14
2. Take a clear/readable picture and submit in Schoology
Posted Thu Jan 14, 2021 at 10:20 am
34.98×104= -------------
because the number 10 to the 4th power has
------------- zeros when it is written without an exponent.
brainliest if right easy question
Answer:
349,800.0 because the number 10 to the 4th power has four zeros when it is written without an exponent.
Step-by-step explanation:
34.98 x 10^4 = 349,800.0 = 349,800
34.98×10⁴ = 349,800.0 because the number 10 to the 4th power has four zeros when it is written without an exponent.
Here, we have,
given that,
the term is: 34.98 x 10⁴
now, we have to find the result of multiplication without an exponent.
so, we get,
34.98 x 10⁴
=34.98 x 10000
= 349,800.0
= 349,800
Hence, 34.98×10⁴ = 349,800.0 because the number 10 to the 4th power has four zeros when it is written without an exponent.
To learn more on multiplication click:
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During a normal sleep, a bears heart beats about 50 times a minute. In its deepest state of hibernation, a bears heart may beat 55 times in 5 minutes. During deep hibernation, how many times would the bear heart beat in 45 minutes
Answer:
495
Step-by-step explanation:
First you would do 45/5=9
Then do 9*55=495
YW!!!!
Find the slope of the line that passes through
(7,-1) and (9,0)
Answer:
1/2 or 0.5
Step-by-step explanation:
so to find the slope of two points you use the slope formula which is rise over run, y2-y1/x2-x1. so that would be -1-0/7-9. leading to -1/-2. so the slope is 1/2 or 0.5.
Alis needs 10 strips of ribbon each 2 and 1/2 feet. how much ribbon in all is needed
Answer:
She needs 25 feet
Step-by-step explanation:
10 * 2.5 = 25
Answer: There are 3 strips that can be cut from the roll of ribbon.
I need help !! This is being timed
Divide the number of people who bought tickets by total people in the seats:
15 / 22 = 0.681818
The 8181 part continues forever, so there will be a line above the 81.
The answer is the first one.
Pls answer fast I will give brainliest!
Write an expression for the measure of ∠DBC. Justify your expression.
Write an expression for the measure of ∠BDC. Justify your expression.
Write an expression for the measure of ∠ADH. Justify your expression.
Write an equation that can be used to determine the value of x from triangle △DAB. Justify your equation. What does x equal?
What are the measures of ∠DBC, ∠BDC, ∠ADH, and ∠EBG?
Answer:
in triangle ABD
x+6+2x-3+90=180(sum of interior angle of triangle) (since each angle of rectangle=90)
3x+3=180-90
3x=90-3
x=87/3=29°
<DBC=<ADB{ALTERNATE ANGLE)=2x-3=2×29-3=55°
<BDC=ABD(ALTERNATE ANGLE)=x+6=29+6=35°
<ADH=180-<ADB{LINEAR PAIR)=180-2x-3=180-2×29-3=180-58-3=119°
<EBG=<DBC(VERTICALLY OPPOSITE ANGLE)=55°
WILL GIVE BRAINLIEST AND 20 POINTS!
A circular, inlaid-wood design for a dining table cost $35 per square foot to build. If the radius of the design is 18 in, find the cost to build the design. Use 3.14 for . Round to the nearest dollar. Hint: 144 in2 = 1 ft2.
Please help I really need it I will be giveing 15 points to whoever can help me
Answer:
the slope is: -1/2
y-intercept: (0,-f)
hopefully that makes sense
Find the value of x in the trapezoid
Please help me fast I’ll give you Brainly if it’s right
Answer: 9.95
Step-by-step explanation:
in similar trapezoids a rearranged formula can be used to solve for the missing base:
[tex]c^{2} =ab[/tex] ⇒ [tex]c=\sqrt{ab}[/tex]
a = the top of the trapezoid
b= the base of the trapezoid
c = the missing base
[tex]c=\sqrt{(9)(11)}[/tex]
[tex]c = 9.949[/tex]