Answers
A = a+b/2 * h
A = 6 + 3 /2 *6
A = 9 / 2 * 6
A = 4.5 * 6
A = 27
Related Questions
Solve this system of equations.
Answers
Answer:
(8,0)
Step-by-step explanation:
y= 0.50x - 4
y= -0.25x + 2
I changed it to make it:
0.25x + y = 2
-0.50x + y = -4
--
We subtract the y's and every equation to cancel out the y.
0.25x - (-0.50x) = 0.75x
2-(-4)=6
0.75x = 6
x = 8.
Plug the x into either equation. We'll do the first eqn.
0.25(8)+y=2
2 = y = 2
y = 0.
(8,0).
Answer:
x = 8, y = 0
Step-by-step explanation:
Given system of equations:
[tex]\begin{cases}y=\dfrac{1}{2}x-4&\\y=-\dfrac{1}{4}x+2\end{cases}[/tex]
First, substitute the first equation into the second:
[tex]\implies \dfrac{1}{2}x-4=-\dfrac{1}{4}x+2[/tex]
SOLVE FOR X.
Step 1: Multiply both sides by [tex]4[/tex] and simplify.
[tex]\\\implies 4\left(\dfrac{1}{2}x\right)-4(4)&=4\left(-\dfrac{1}{4}x\right)+2(4)\\\\\implies \dfrac{4}{2}x-16=-\dfrac{4}{4}x+8\\\\\implies 2x-16=-x+8[/tex]
Step 2: Add (1)[tex]x[/tex] to both sides.
[tex]\\\implies 2x + x-16=-x+x+8\\\\\implies 3x-16=8[/tex]
Step 3: Add [tex]16[/tex] to both sides.
[tex]\\\implies3x-16+16=8+16\\\\\implies 3x=24[/tex]
Step 4: Divide both sides by [tex]3[/tex].
[tex]\\\implies \dfrac{3x}{3}=\dfrac{24}{3}\\\\\implies \boxed{x=8}[/tex]
SOLVE FOR Y.
Step 1: Substitute [tex]8[/tex] as the value of [tex]x[/tex] in any of the given equations.
[tex]\\\implies y=\dfrac{1}{2}(8)-4[/tex]
Step 2: Simplify.
[tex]\\\implies y=4-4\\\\\implies \boxed{y=0}[/tex]
The solution to this system of equations is (8,0).
Another example:
brainly.com/question/26578673
There are 80 girls and 70 boys in the sixth grade. Of these students, 11 girls and 7 boys are left handed. What percentage of the sixth graders are left handed?
Answers
Answer: 12%
Step-by-step explanation:
Total number of people in 6th grade: 70+80 = 150
Total numbers of lefties: 11 + 7 = 18
Percent:
18 ÷ 150 = 0.12
0.12 x 100 = 12
Answer:
12%
Step-by-step explanation:
80+70=150 which is the whole
11+7= 18 which is the part
The equation is
Part= Percent x Whole
18= % x 150 or 18 divided by 150 is
.12 or 12%
hope this helps
Doubling the difference between a number and 4 is 6 more than the number.
Answers
Answer:
The number is 14
Step-by-step explanation:
please find the answer you dont need to show your work but you can
Answers
If I’m wrong I’m sorry. I tried multiplying it and dividing it and that’s what I got.
can you please help me
Answers
Answer:
That would be 180°(angle of a straight line)-105°= 75°
Answer:
x=75
Step-by-step explanation:
1. 105+x=180? step1: subtract 105 on both sides
2. x=75
Decide whether each equation is true or false, and explain how you know.
9⋅9⋅3=35
True
False
:
7+7+7=3+3+3+3+3+3+3
True
False
:
17⋅17⋅17=37
True
False
:
41=4⋅1
True
False
:
6+6+6=63
True
False
:
Answers
Plssssss someone help solve this
Answers
Answer:
I would say B
Step-by-step explanation:
leave a thx
pls ill give brainelist
Answers
Answer:
60
Step-by-step explanation:
look at the temperature on the bottom of the graph and find the line between 8 and 12 which will be 10, then go straight up till you reach a point and that point is 60
So the answer is :A
pls help im dying lol
Answers
Answer:
what you would do would be all those coordinates times by 2/3 than add 6 to the x intercept
pls ill give brainelist
Answers
Answer:
c is the correct option
Find the missing length of the figure.
Answers
Answer:
x=37mm
Step-by-step explanation:
Pythagorean theorem:-
[tex]x^2=\sqrt{(13^2-5^2)}^2+(35)^2[/tex]
[tex]x^2=12^2+35^2[/tex]
[tex]x^2=144+1225[/tex]
[tex]\sqrt{x^2}=\sqrt{1369}[/tex]
[tex]x=37[/tex]
~
Hope this helps!
5/6=−4/x+2 A. x=−2 4/5 B. x=−4 2/5 C. x=−5 1/5 D. x=−6 4/5
Answers
Answer:
D is your answer i think it is
1. Trig problem......
Answers
Answer:
2.7
Step-by-step explanation:
i divided 8 by 3 but please dont rely on my answer i didnt do one of this problems in a long time
At a dog show, the entries included Welsh corgis and cocker spaniels. The table compares the weights within this sample of dogs.
Answer the questions to compare the weights of the dog breeds and determine which breed of dog had the heaviest entry.
1. What is the median weight of the Welsh corgis? What does the median tell you about their weights? (3 points)
2. Which type of dog has the greater variation in weights? Justify your answer. (3 points)
3. Do you think the heaviest dog in the show was a Welsh corgi or a cocker spaniel? Explain how you made your choice. (4 points)
Answers
Answer:
Where is the table?
Step-by-step explanation:
We need the table to to answer this
Answer:
Step-by-step explanation
Kelvin went skiing with his family. They kept track of how long they each skied without falling. The table lists the longest time that each family member skied without falling.
Person Time Skied
(seconds)
Kelvin 223
Lori 55
Vanessa 265
Devon 172
Celia 112
Arnold 356
Part A
Kelvin wants to know whether he skied without falling more than twice as long as anyone else in his family. His dad tells him that he can check by using the inequality 2f < 223, where f is the time skied in seconds for each person. Plug the values for the time skied by each person into the inequality to find the answer.
Answers
Kelvin did not skied without falling more than twice as long as anyone else in his family.
Answer:
He only skied more than Lori.
Step-by-step explanation:
Lori*2: 110
Vanessa*2: 530
Devon*2: 344
Celia*2: 224
Arnold*2: 712
i need help on my homework! i've tried a couple of times on these 3 but im confused thanks
Answers
25/2.5=10cm
For the second problem, you put 15/6 and set in equal to x/8 when you cross multiply you get 6x=120 then you divide x=20
For the last problem, you divide 43,75 by 5 then multiply it by 400 to get the kiloliters which equals 3,500.
PLS HELP ME DUE IN A FEW MINUTES
Answers
What is the effect of multiplying both sides of an inequality by a negative number? Explain and give an example.
Answers
Answer: You would swap the ineqaulity
Step-by-step explanation:
Multiplying or dividing both sides by a negative number reverses the inequality. This means < changes to >, and vice versa. For example, given that 5 < 8 we can multiply both sides by 6 to obtain 30 < 48 which is still true.
Please lend me a hand thanks
Answers
Answer:
The answer is 9
Step-by-step explanation:
A linear equation is an equation of a straight line. To solve linear equations, it is important to keep the following key concepts in mind:
Maintain balance of the equation by applying the same operations to both sides of an equation
Isolate for the variable by collecting like terms
Use inverse operations to rearrange an equation
Answer:
x must be 9 (Answer C).
Step-by-step explanation:
The two angles marked in red are "vertical angles," and, as such, they are equal: 5x - 8 = 2x + 19.
Combining like terms results in 3x = 27, and therefore x must be 9 (Answer C).
Toys R Us is having a 38%
off sale on all of their
backpacks. If a backpack
normally costs $22.00, how
much will it be on sale?
Answers
Answer:
$13.64
Step-by-step explanation:
38/100 cross multiplied by x/22 multiply 22 and 38, then divide by 100
PLSSS help, trig problem....
Answers
please help me tysm!
Answers
Answer:
1) f=650 2) a=16 3) d=91
Step-by-step explanation:
1) To make f=...
We can multiply both sides by 26
f=26×25
f=650
2) To make a=...
We can divide both sides by 5
a=80÷5
a=16
3) To make d=...
We can times both sides by 7
d=13×7
d=91
HELP FAST!!!!!!!!!!!!!!
The student council is asking people to donate money for the new park outside the school. Everyone who makes the suggested donation amount will be given a bracelet.
If everyone donates the suggested amount, and b bracelets are given away, what is the algebraic expression that represents the total amount collected in donations?
Answers
Answer:
x(b) or b(x)
Step-by-step explanation:
x for the number of people who suggested.
b for the number of bracelets given.
The bracelets are not needed in this equation because they do not relate the the total amount of donations collected.
let's first introduce some variables:
let p= the number of people
let d= the suggested amount of of donation
equation:
number of people × suggested amount of donation
d×p
oddest question but can u help me its a real school problem
Suppose that an individual has a body fat percentage 18.5% of and weighs 136 pounds. How many pounds of her weight is made up of fat? Round your answer to the nearest tenth.
Answers
Answer:
25.2 pounds
Step-by-step explanation:
136 multiplied by .185 = 25.16
25.16 to the nearest tenth is 25.2
The 10-second barrier in the 100-meter dash was first broken in the 1968 Olympics, when the winning time was 9.95 seconds. A gym teacher ran the 100-meter dash in 14.7 seconds. How much faster was the 1968 Olympic time than the gym teacher’s time
HELP
Answers
Answer:
4.75 seconds
Step-by-step explanation:
14.7 - 9.95
Answer:
The Olympian completed the 100-meter dash 4.75 seconds faster than the gym teacher. You could also say he was 3.25 meters per second faster.
Step-by-step explanation:
To get 4.75 I just subtracted and found the difference between both of their times.
To find the difference between their speeds, I divided 100 by each time to get each person's distance per second. The olympian's speed was 10.05 meters per second and the gym teacher's speed was 6.80 meters per second. To find the difference between these, I subtracted the same way I did with the time difference.
Which function is equivalent tof(x)=4x(to the power of 2)+12x+9
Answers
Answer:
The other function that matches this function is...
[tex](2x+3)^{2}[/tex]
Step-by-step explanation:
Krista wants the pen 5 feet long by 4 1/2 feet wide to be 4 times the area that it is now , what are the two ways she could change the lengthened or width give her that new area to be 4 times the area it is
Answers
Answer:
90ft^2
Step-by-step explanation:
If she was trying to make it 4 times bigger is multiply the length or the width by a factor of 4
If the starting measurements were
5ft long and 4 1/2 feet wide you simply multiply the two
5 x 4.5 = 22.5 ft
Then when trying to make it 4 times bigger multiply your answer by 4
22.5 x 4 = 90ft^2
I belive its 15
Hope this helped.
SOMEONE? PLEASEEEEEEEEEEEEE I DONT KNOW AB THIS
Answers
Answer:
Love your pfp
Step-by-step explanation:
Forest rangers at a state park have observed a decline in the rate of trees per acre over a 5 year period. At the beginning of their observations, there was an average of 48 trees per acre. At the end of the 5 year period, there was an average of 42 trees per acre. If this trend continues how many trees per acre will there be in 4 1/2 years from the end of the 5 hear observation period?
Answers
Answer:i think it would be 38 and a half
Step-by-step explanation:
Which best describes the data for June, July, and August?
A. a cluster
B. a gap
C. low frequency
D. symmetric