Answers
Answer:
[tex]\displaystyle S_{27}=675[/tex]
Step-by-step explanation:
The sum of N consecutive natural numbers is given by:
[tex]\displaystyle S_N=\frac{N}{2}(F+L)[/tex]
We need to find the sum of the natural numbers between 12 to 38.
To calculate the required sum we have F=12, L=38, but we don't have the value of N.
From 12 to 38 there are 38 - 12 + 1 = 27 natural consecutive numbers, thus N=27.
Substituting in the formula:
[tex]\displaystyle S_{27}=\frac{27}{2}(12+38)[/tex]
[tex]\displaystyle S_{27}=\frac{27}{2}(50)[/tex]
[tex]\displaystyle S_{27}=27*25[/tex]
[tex]\mathbf{\displaystyle S_{27}=675}[/tex]
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Rotate this figure 90 degrees counterclockwise.
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−5x+13y=−7
5x+4y=24
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Answer:
Using eliminating method then adding equation 1 and 2 give
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Answer:
c. y=7x-2
Step-by-step explanation:
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4. Estimate.
12 x 11
36 x 29
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Step-by-step explanation:
12*11=132
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For f(x) = -x + 8, which statement is true?
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Find the slope and y-intercept for the table.
slope:
y-intercept:
Answers
Answer:y is 60 slope is -10
Step-by-step explanation:
The graph of a function f is shown below.
Find f(-2).
Answers
Answer:
-4
Step-by-step explanation:
The value of the function evaluated at [tex]x = -2[/tex] is -4.
The horizontal axis represents the set of the domain of the function, whereas the vertical axis is for the set of the range of the function. In this exercise, we need to need to find the value on the vertical axis that corresponds with a given value of the horizontal axis ([tex]x = -2[/tex]).
By direct inspection, we conclude that [tex]f(-2) = -4[/tex].
We kindly invite you to see this problem related to functions: https://brainly.com/question/12431044
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Answers
2(-1)-1 = -2-1 = -3
2(0)-1 = 0-1 = -1
2(1)-1= 2-1 = 1
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you went out to eat with 3 friends and your meal cost 72.50 how much was the bill if 6.75 sale taxes was included
Answers
Answer:
$29.67 each
Step-by-step explanation:
6.75% of $72.50 = $4.90
72.50 + 4.90 = $77.40
15% of 77.40 = 11.61
77.40 + 11.61 = 89.01
89.01 divided by 3 = $29.67 each
PLEASE HELP QUICK
The costume jewelry and accessories for the show are bought from sales racks at two different stores on different days. Use x to represent the price of each item on the sales rack at the first store and y to represent the price of each item on the sales rack at the second store.
On the first day, the students spent $30 on 4 items from the first store and 7 items from the second store. On the second day, the students spent $22 on 3 items from the first store and 5 items from the second store. On the third day, the students need to buy 10 items from the first store and 17 items from the second store.
What is the amount of money the students will need on the third day? Find your answer by creating and solving a system of linear equations based on the first day and the second day. Explain your reasoning.
Answers
Answer:
74
Step-by-step explanation:
Using linear equations, we are given two equations from the questions:
4x +7y=30 from day one and 3x +5y=22 from day two
Multiply the first equation by 3 and second by 4 giving us
12x +21y=90 and 12x +20y=88. Minus both equations.
12x - 12x +21y - 20y= 90 - 88, Gives you y=2,
You can now use the value of y to find x.
4x + 7y = 30
4x + 7(2)= 30
4x + 14= 30. Minus 14 on both sides giving you
4x=16. Divide both sides by 4.
x=4
Now use both values to find how much money is needed on the third day.
10x + 17y
=10(4) + 17(2)
=40 +34
=74
in the figure below, m
Answers
Step-by-step explanation:
In figure below what???
Answer:
here is no pictures sorry
Please help me with this maths question, brainiest and points will be given. THANK YOU!!!
Answers
Step-by-step explanation:
Let the number of weeks be X.
[tex]743 = x \times 63 + 50 \\ 743 = 63x + 50 \\ 743 - 50 = 63x \\ 693 = 63x \\ x = 693 \div 63 \\ \frac{693}{63} \\ \\ = 11 \: weeks[/tex]
Here, is your answer.
...and by the way myself Zeeshan Khan from India
There were 5 boys for every 8 girls at Foster High School last year. If there were 390 students at the school, how many were girls and how many were boys?
Answers
Answer:
it would be 150 boys and 240 girls
Step-by-step explanation:
does anyone know this?
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Answer:
2.4x10^-2
Step-by-step explanation:
since this number is a decimal you will use a negative number above the 10...
Pleassssseeee help. I neeed help
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Answer:
B.
Step-by-step explanation:
Took the test :}
Solve the equation. m + (-22) = -25
Answers
Answer:
m=-3
Step-by-step explanation:
move the -22 to the other side by adding 22 on both sides:
m-22+22=-25+22
Simplify:
m=-3
Answer: m=-3
Hope this helps!
Helpp with bothhhh!!!!!
Answers
Answer:
3. x = 5
4. -5 1/25
Step-by-step explanation:
-3x+5=-10
Subtract the 5 from both sides...
-3x = -15
Divide by -3
x = 5
For 4, it's just multiplying.
-2 4/5 in improper form is -14/5
1 4/5 in improper form is 9/5
-14/5 x 9/5 is -126/25
-126/25 can be -5.04 or -5 1/25.
Answer:
3. a (x=5)
4. -126/25
Step-by-step explanation:
3. -3x+5=-10
-3x=-10-5
-3x=-15
x=5
4. -(-2 4/5) x 1 4/5
(-14/5) x 9/5
= -126/25
which of the following quadrilaterals are always parallelogram? select all that apply
Answers
Answer: square, rectangle and rhombus
Step-by-step explanation:
The Captain of a boat is steering at
a heading of
327° at 18 mph.
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Answers
Answer:
59.97 º at 18.23 mph
Step-by-step explanation:
What is the x intercept of 4y+9x=18
Answers
Answer:
Step-by-step explanation:
step 1. 4y+9x=18
step 2. 4y=-9x+18
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Answer:
(2,0)
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Write an equation of a line that safely lands the plane
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Answers
m=(y2-y1)/(x2-x1)
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Plug in the x-coordinates of each of the ordered pairs. That is -4 and 5
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Now that you know the slope, you want to take one of the ordered pair and plug them into the equation y=mx+b. I’ll take (-4,4). You want to find the b.
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Answers
Answer:
8 spaces away
Step-by-step explanation:
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Answers
Answer:
The absolute value for x would be 30
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Answers
Answer:
1. A=1, B=4, C=9
2.A=5 B=6, C=-2
Marcus can choose between a monthly salary of $1,500 plus a 5.5% commission of sales or $2,000 plus a 3% commission of sales. He expects about $8,000 in sales each month. Which salary option should he choose?
Answers
Answer:
2,000 plus a 3% commision :))
Step-by-step explanation:
¿Cuál es el volumen de un prisma octagonal cuyo lado de la base es de 2 cm
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Answer:
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Step-by-step explanation:
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Answer:
x=18
Step-by-step explanation:
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10x=180
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Which graph shows a function with a zero of –5?
Answers
Answer:
Look for the y-intercept where the graph crosses the y-axis. Look for the x-intercept where the graph crosses the x-axis. Look for the zeros of the linear function where the y-value is zero.
Step-by-step explanation: