Answer:
I'm not 100% sure but I think if you graph them all
where they intersect is the solution
Answer:
The solution of such a system is the ordered pair that is a solution to both equations. To solve a system of linear equations graphically we graph both equations in the same coordinate system. The solution to the system will be in the point where the two lines intersect.
Step-by-step explanation:
b) Change 12.47l into cm.
Answer:
1247.1
Step-by-step explanation:
12.471 × 100 = 1247.1
formula= multiply the length value by 100
The average age of staff in the maths department is 40.
There are 7 members of staff (Jill, Nicky, Wendy, Cathy, Cerian, Alan and Andy).
The average age of Jill, Nicky and Wendy is 41.
The average age of Andy, Alan and Cathy is 43.
How old is Cerian?
Answer:
Cerian is 28 years old
Step-by-step explanation:
The given parameters are;
The average age of the staffs in the mathematics department = 40
The number of staffs in the department = 7
The average age of Jill, Nicky and Wendy = 41
The average age of Andy, Alan and Cathy = 43
From the given parameters, we have;
The average age of the staffs in the mathematics department = (The sum total of the ages of the members of the math department)/(The number of staffs in the department)
Therefore;
40 = (The sum total of the ages of the members of the math department)/ (7)
From which we have;
The sum total of the ages of the members of the math department = 40 × 7 = 280
Which gives;
Jill's age + Nicky's age + Wendy's age + Cathy's age + Cerian's age + Alan's age + Andy's age = 280 years
The average age of Jill, Nicky and Wendy = 41
Given that Jill, Nicky, and Wendy make up 3 of the 7 members of staffs, we have;
The average age of Jill, Nicky and Wendy = (The sum total of the ages of Jill, Nicky, and Wendy)/(The number of staff Jill, Nicky, and Wendt make)
Therefore;
The sum total of the ages of Jill, Nicky, and Wendy = 41 × 3 = 123
Which gives;
Jill's age + Nicky's age + Wendy's age = 123 years
Similarly, the sum total of the ages of Andy, Alan, and Cathy = 43 × 3 = 129
Which gives;
Andy's age + Alan's age + Cathy's age = 129 years
Therefore;
Cerian's age = (Jill's age + Nicky's age + Wendy's age + Cathy's age + Cerian's age + Alan's age + Andy's age) - (Jill's age + Nicky's age + Wendy's age) + (Andy's age + Alan's age + Cathy's age)
∴ Cerian's age = 280 years - 123 years - 129 years = 28 years
Ill give brainliest !!!
Solving quadratic equations - factoring.
Factor to solve each problem 1-3
Answer:
1) 1 1/2 ft.
2) 12 m.
3) 6 ft.
Step-by-step explanation:
1, 2) If the area is the same, then the sides are exactly half that of the surrounding square.
3) 9^2 = 81 ft^2 (or sqrt(81) = 9), if we take this 9 and subtract the 3 ft from it we will get the original side lengths.
A spinner is divided into 9 equal parts. What is the probability of it landing on an even number?
Answer:
4/9
Step-by-step explanation:
Evaluate the expression: 28-16+2x4’2
Answer: 44
Step-by-step explanation:
28 - 16 + 2 x 4^2
28 - 16 + 2 x 16
28 - 16 + 32
12 + 32
44
A family goes to an amusement park adult tickets cost $21 children under 10 years of age pay $15 write an algebraic expression for the total cost then find the total cost of 4 adult tickets and 3 children's tickets
Answer:
$129
Step-by-step explanation:
Let us represent:
Cost Adult tickets = x
Cost Children's tickets = y
The total cost of ticket = C =
A family goes to an amusement park adult tickets cost $21 children under 10 years of age pay $15
C = $21 × x + $15 × y
C = 21x + 15y
The total cost of 4 adult tickets and 3 children's tickets is calculated as:
C = 21 × 4 + 15 × 3
C = 84 + 45
C = $129
2. What is the difference?
10c3 – 8c3
A. 18c3
B. 2c3
C. 3c6
D. –80c6
3. What is the sum?
16x3 + 9x3
A. 25x6
B. 25x3
C. 7x3
D. 24x6
4.Find the difference.
(9a4 + 2a2 + 5) – (16a4 – 7a2 + 1)
A. 25a4 – 5a2 – 4
B. –7a4 – 5a2 + 6
C. 25a8 + 9a4 + 6
D. –7a4 + 9a2 + 4
5.Multiply 9x2(2x2 + 8x).
A. 18x4 + 72x3
B. 18x2 + 72x3
C. 11x4 – 17x3
D. 90x4
Step-by-step explanation:
2)B
3)B
4)B
5)A
Marks as brainlist
Step-by-step explanation:
(9a4 + 2a2 + 5) – (16a4 – 7a2 + 1)
A. 25a4 – 5a2 – 4
B. –7a4 – 5a2 + 6
C. 25a8 + 9a4 + 6
D. –7a4 + 9a2 + 4
5.Multiply 9x2(2x2 + 8x).
A. 18x4 + 72x3
B. 18x2 + 72x3
C. 11x4 – 17x3
D. 90x4
What is the length of the missing leg?
17 mm
15 mm
Answer:
17 mm + 15mm = 32
Step-by-step explanation:
how to get 3.15 ratio
Answer:
Step 1) Convert the 3.15 percent to a decimal number.
To convert 3.15 percent to a decimal number, you divide 3.15 by 100. In other words, the quotient you get when you divide 3.15% by 100 is the decimal number.
3.15 ÷ 100 = 0.0315
Step 2) Convert the decimal number to a fraction.
To convert the decimal number to a fraction, we make the decimal number the numerator, and 1 the denominator.
0.0315 =
0.0315
1
Step 3) Remove the decimal point in the numerator.
To remove the decimal point in the numerator, multiply both the numerator and denominator by 10000.
0.0315 × 10000
1 × 10000
=
315
10000
Step 4) Simplify the fraction.
The greatest common factor of 315 and 10000 is 5. Therefore, to simplify the fraction, divide the numerator and denominator by 5.
315 ÷ 5
10000 ÷ 5
=
63
2000
Step 5) Convert the fraction to a ratio.
To convert the fraction to a ratio, replace the fraction divider line with a colon.
63
2000
= 63:2000
That was the final step. Below is the answer to 3.15 percent as a ratio.
3.15% = 63:2000
Step-by-step explanation:
Answer:
the 3.42 would certainly have the advantage from a dead stop, providing that you have traction.. gear ratio makes little difference if the tires are spinning wildly ...
Step-by-step explanation:
Please please pleeeease I will mark brainliest if I get it right! Arrange the persuasive essay components in the correct sequence.
a statement of relevance to show
readers how the topic impacts society
a topic sentence in the
first body paragraph
a call to action
a topic sentence in the
last body paragraph
a restated thesis
a hook to catch the reader’s attention
a thesis statement
Components of a persuasive essay in correct sequence are,
a hook to catch the reader’s attentiona statement of relevancea thesis statementa topic sentence of first bodya topic sentence of last bodya restated thesisa call to actionWhat is a persuasive essay?A persuasive essay is an academic writing, which intends to convince readers to believe in an idea or opinion and to do an action.
Components of a persuasive essay in correct sequencea hook to catch the reader’s attentiona statement of relevancea thesis statementa topic sentence of first bodya topic sentence of last bodya restated thesisa call to actionLearn more about persuasive essay here: https://brainly.com/question/1513199
#SPJ2
What value of x makes this true? -90 =100 + x
Answer:
x=-190
Step-by-step explanation:
-90=100 + x
-90=100+(-190)
-90=-90
Pls need this for today (geometry) all the info I have for the question
Answer:
Step-by-step explanation:
the triangles are similar, also is a right triangle
therefore
16/8=10/x
x=(8*10)/16=5
x=5
NEED HELP ASAP PLZZZCircles can start with just a little bit of information and grow into equations and graphs. what are the coordinates of the center point and the radius of a circle?
Answer:
i need a photo this makes no sense
Step-by-step explanation:
Is the function represented by the table linear?
no because it does not have a constant rate of change Step-by-step explanation:
If XY = 48. XZ = 36, JQ = 7, and the radius of the circumscribed circle of AXYZ is 25, find QK.
Answer:
17.3
Step-by-step explanation:
I had a test and this is what they had as the answer.
-5x + 4(2x + 1)
please help!
(simplify it)
Answer:
3x+4
Step-by-step explanation:
Write an equation in slope-intercept form for the line with slope 1/5
and y-intercept 5.
Answer:
y=1/5x+5
Step-by-step explanation:
Slope-intercept form is written y=mx+b.
y- needs to be by itself in this form.
m- the slope.
x- always to the right side of the slope, or m.
b- y-intercept.
Now that we know this, all we have to do is plug in the numbers we have. So when we plug this in, the equation looks like this:
y=1/5x+5
Hope this helps you and have a great day :3
An ant weighs 5 grams. How many milligrams does an ant weigh?
A 5 Milligrams
B 500 Milligrams
C 5,000 Milligrams
D 0.005 Milligrams
Christina and her 2 friends spent $25.02 at there favorite restaraunt. If they split the cost equally about how much will they each pay?
I need help can anyone help me on this pls?
Answer:
Multiply 6 x 4 then add 10
or do the other way around
Step-by-step explanation:
convert the fraction 1/40 to a decimal form
Answer:0.025
Step-by-step explanation:
given an equation y=3x-1 copy the chart and fill in the gaps
1/2 of $20.00 is $10.00
Answer:
yes
Step-by-step explanation:
bc 20/2 is another way to fimd it which gets you 10
hi, pls help ry so much+20
James and Eron are going on a road trip. Eron drove the first 180 miles of their trip. James drove the next 150 miles of their trip. They decided to drive the same amount of hours each for the rest of the trip. Eron drove at a speed of 60 miles per hour when he drove. James drove at a speed of 55 miles per hour when he drove.Let h represent the number of hours driven by each person.
Question seems incomplete but some explanation could help
Answer and explanation:
Distance travelled = speed × time
We know the speed for each driver:
Eron drove at 60 miles per hour
James drove at 55 miles per hour
We know they both drove same amount of time = h
Therefore Eron's distance travelled = 60 miles per hour × h = 60h
Jame's distance travelled = 55 miles per hour × h =55h
Total distance travelled for the rest of the trip = 60h + 55h
A barrel contained 50 Gallons of oil.Oil leaked out of the barrel at a rate of 5 gallons every 2 days.How many days did it take for all 50 gallons of oil to leak out of the barrel?
Answer:
20 days
Step-by-step explanation:
50 divided by 5 = 10
10 times 2 = 20
A car travels 253 miles
in 8 hours. How far can
it travel in 7 hours?
Answer:
221 miles
Step-by-step explanation:
The car travels 253 miles in 8 hours, it means the car can travel in 221 miles in 7 hours.
Just imagine it
Does anyone know this ?
Answer:
the awnser is A
Step-by-step explanation:
9x=6x+3
x=1
9(1)
Answer:
x = 1
Step-by-step explanation:
set both sides equal to each other since it's a square:
9x=6x+3
move like terms from one side to the other:
9x-6x=6x-6x+3 = 3x=3
profit from your 9000 IQ play:
3x=3 so divide both sides by 3, and:
x = 1
For the equation
y = 2(.5^x)
Which of the following statements about the graph is true?
Select one:
O The graph has an asymptote at y=.5
O The graph has an asymptote at y=2
O The graph is increasing
O The graph is decreasing
Martin earn the following scores on his last five test. What is the interquartile of his course
Answer:
18
Step-by-step explanation:
The interquartile range is the middle 50% of the data.
To find the interquartile range, we must first find the lower and upper quartiles.
In this case, the lower quartile is 76.5, and the upper quartile is 94.5.
Subtracting 76.5 from 94.5 gives us the answer of 18.
Let me know if this helps!
