Answer:
20
Step-by-step explanation:
Find the solution to the system of equations. You can use the interactive graph below to find the solution. 8x + 4y = 24
-7x + 7y = 28
x=
y=
Answer:
X=11y+4 y= -1/11x + 4/11
Step-by-step explanation:
Let's solve for x.
8x+4y+24−7x+7y=28
Step 1: Add -24 to both sides.
x+11y+24+−24=28+−24
x+11y=4
Step 2: Add -11y to both sides.
x+11y+−11y=4+−11y
________________________________
answer: x=−11y+4
_______________________________
Let's solve for y.
8x+4y+24−7x+7y=28
Step 1: Add -24 to both sides.
x+11y+24+−24=28+−24
x+11y=4
Step 2: Add -x to both sides.
x+11y+−x=4+−x
11y=−x+4
Step 3: Divide both sides by 11.
11
11y/11 = - x+4/11
y=-1/11x +4/1
____________________
Answer: y= -1 / 11 x + 4/11
Answer:
x=-2
y= 2
Step-by-step explanation:
for khan academy
Bill $42, fax 9%,
tip 18%
Please help urgent I give extra point and BRAINLY please help
Sorry I am late, but I think the first answer is wrong.
Answer:
53.34
Step-by-step explanation:
42 x .18 = 7.56
42 x .09 = 3.78
---------------------------
7.56 + 3.78 = 11.34
---------------------------
42 + 11.34 = 53.34
---------------------------
Answer = 53.34
simplest form of 1/4 - 3/5
Answer:
-7/20
Step-by-step explanation:
1/4 - 3/5 = 5/20 - 12/20 = -7/20
Anyone mind helping
Answer:
angle FEH= angle FGH (0pposite angle of parallelogram is equal)
angle FGH=68°
hope it helps.
1/2 (x-4)= -8 find the variable
Answer:
x = -12
Step-by-step explanation:
=> 1/2 (x-4) = -8
=> x-4 = -8 × 2
=> x-4 = -16
=> x = -16+4
=> x = -12
PLEASE HELP A, B, C, and D have the coordinates (-8, 1), (-2, 4), (-3, -1), and (-6, 5), respectively. Which sentence about the points is true?
A. A, B, C, and D lie on the same line.
B. AB and CD are perpendicular lines.
C. AB and CD are parallel lines.
D. AB and CD are intersecting lines but are not perpendicular.
E. AC and BD are parallel lines.
Answer:
C
Step-by-step explanation:
Graph them
What is x!!! PLSSSSSSSSS ANSWEREEE
Answer:
13 bc 100 x (13 - 3) = 100 x 10 = 1000
Step-by-step explanation:
Answer:
13
Step-by-step explanation:
Which expression is equivalent to 16(30x – 24y) –18 (32x – 16y)?
Answer:
\frac{1}{6}\left(30x-24y\right)-\frac{1}{8}\left(32x-16y\right)
Step-by-step explanation:
there ya go
Twenty-one more than three times a number is equal to the difference between 46 and twice the number. Find the number.
Answer: The number is =5
Step-by-step explanation:
21 + 3X = ("Difference means subtract.) 2X
Twenty-one more than three times a number is equal to the difference between 46 and twice the number
Then write the proper equation: 21+3x= 46-2x.
Next get rid of the smaller "x" so 3x+2x=46-25
solve X
5x=25
x=5
Thank you
Steven has 1/3 of package of biscuit mix left.He will use equal para of the leftover mix to make three watches of biscuits. If he uses all of the mix, what fraction of the original package will he use for each batch?
Answer:
1/9
Step-by-step explanation:
(1/3)/3 = 1/9
Determine the slope of the line passing through the points (1, 2) and ( – 2, – 2).
Answer:
4/3
Step-by-step explanation:
Find g in the right triangle.
Answer:
34 degrees
Step-by-step explanation:
Before solving for g, we must remember that the inside of a triangle will always equal 180 degrees. Also, keep in mind that the little square at the top left corner of the triangle represents 90 degrees, so we can add both the existing degrees we know of:
90 + 56 = 146
And to find g, we simply subtract 180 by 146:
180 - 146 = 34
So, g is 34 degrees
Hope this helps :)
What is the total measurement of the angels in a triangle?
Answer:
The sum of the three angles of any triangle is equal to 180 degrees.
Step-by-step explanation:
Mark brainliest please if my answer is correct thank you and have a nice day
what is (-9 - 6 x 5) x 10 = ?
Answer:
-390 is your answer
Answer:
Step-by-step explanation:
PEDMAS - Parenthesis , Exponents , Division, Multiplication , Addition and subtraction.
(-9 - 6 *5) *10 = (-9 - 30) *10
= -39 *10
= -390
The base of the following pyramid is a square. If the surface area of the pyramid is 896 in^2, what is it's volume? Side base length is 14 and distance to middle is 7.
Answer: 457.3
Step-by-step explanation:
[tex]V=\frac{lwh}{3}[/tex]
[tex]V=\frac{14*14*7}{3}[/tex]= 457.3
Answer:
V= 1568 in^3
Step-by-step explanation:
B = 14^2 = 196
896 = 14^2 + 2(14) (l)
896 = 196 + 28 (l)
700 = 281 l
25 = l
7^2 + b^2 = 25^2
49 = 625
24
1/3 (196)(24) = 1568
25 + (98 - 7) x 4 =?
Any help would be really nice right now!
Thanks!
Use long division to write 5/16 as a decimal number
15 points
Answer:
= 0.312
Step-by-step explanation:
Solution:
We have the equation:
5 ÷ 16 = 0.312
Calculated to 3 decimal places.
0. 3 1 2
1 6 5. 0 0 0
− 0
5 0
− 4 8
2 0
− 1 6
4 0
− 3 2
8
18x2 + 10x = 0
please help no spam!
Answer:
x= -5/9
That is the answer, try it.
Given a line with slope m = -3/2 and a point (5, -6), what's the y-coordinate of the y- intercept?
Answer:
3/2
Step-by-step explanation:
y = mx + b
-6 = -3/2(5/1) + b
-12/2 = -15/2 + b
b = 3/2
Find the value of x. The diagram is not to scale
Answer:
please post the pic or figure of the questions
Please help i am new here
Answer: 1. 3/8-1/4=1/8
2. 3/8+1/4=5/8
3. x=5/8
Step-by-step explanation: 1. you have to subtract 3/8 by 1/4 because you have to use the largest number to subtract for the smallest number so 3/8-1/4=1/8
2. Add by adding 3/8 by 1/4 because you have to find the value of x so 3/8+1/4=5/8
3. look at number 2. and the answer is x= 5/8
plz mark me brainliest
you can mark me brainliest when 2 people answered and on my answer look on the bottom right and tap the crown. thx!
In 2010, Kim-Ly earned $17.50 for 2 hours of work. Which table shows the relation ship between the number of hours worked and Kim-Ly’s total earnings, if her rate per hour is constant.
Answer:
8.75 an hour
Step-by-step explanation:
A box of staples contains 6 x 103 staples and weighs 12 oz. How much does one staple
weigh? Write your answer in scientific notation. Round your answer to the nearest tenth, if
necessary.
Answer:
2 * 10^-3 oz
Step-by-step explanation:
Given that:
Number of staples per box = 6 * 10^3
Weight of staple box = 12 oz
Weight per staple = (weight of staple box / number of staples per box)
Weight per staple = 12 / 6 * 10^3
Weight per staple = 12 / 6 * 1000
= 12 / 6000
= 0.002 oz
= 2 * 10^-3 oz
Please help what is 80 less than x?
Answer:
x - 80
Step-by-step explanation:
"80 less than x"
__________________
We have the expression 80 less than x. X has no artifical value therefore we do nothing with it. Based off of the wording of the sentence, it says that the total of this unknown number is 80 less than x. Meaning the 80 has been subtracted by x to get this unknown number. Therefore,
x - 80
What is 7.8 * 7.8 * 7.8 * 7.8 * 7.8 as a power
Answer:
7.8^5
Step-by-step explanation:
I need very urgent help with this
Answer:
Yep the dude is right
Step-by-step explanation:
7 chickens laid 35 eggs. How many eggs will be laid by 40 chickens
Answer:
200 eggs
Step-by-step explanation:
7/35=40/x
simplify 7/35 into 1/5
1/5=40/x
cross product
5*40=1*x
200=x
Answer:
200 eggs
Step-by-step explanation:
First I divided 35 by 7 and got the answer 5. This means that each chicken will lay 5 eggs. 40 x 5 = 200. So 40 chickens will lay 200 eggs.
I hope this helps!!
Pls mark me brainliest
Assume that random guesses are made for eight multiple choice questions on an SAT test, so that there are n= 8 trials, each with probability of success (correct) given by p=0.3. Find the indicated probability for the number of correct answers. Find the probability that the number x of correct answers is fewer than 4
Answer:
0.80589
Step-by-step explanation:
So all of the numbers of correct answers less than 4 are 0,1,2,3
We need to calculate the probability for each separately and then add them together.
To find the probability we have to first find the combination. We know that there’s n=8 trials and that p=0.3. So 1-0.3 gives us 0.7.
The combination formula is: ! / (!(−)!)
So the n would always =8, and the r would be 0,1,2,3. So you would have to calculate it for 0,1,2,3 Separately. This can be done by hand or you can use a simple combinations calculator online.
For 0;
The combination is 1,
1 x 0.3^0 x 0.7^8-0 =
0.057648
For 1;
The combination is 8,
8 x 0.3^1 x 0.7^8-1 =
0.19765
For 2;
The combination is 28
28 x 0.3^2 x 0.7^8-2 =
0.296475
For 3;
The combination is 56
56 x 0.3^3 x 0.7^8-3 =
0.254122
All that’s left is to add these four numbers;
0.057647 + 0.19765 + 0.296475 + 0.254122 = 0.80589
Using the principle of binomial probability, the probability of correct answers fewer than 4 is : 0.8059
Recall the binomial probability formula :
P(x = x) = nCx * p^x * q^(n-x)
Where :
n = number of trials x < 4 p = probability of success = 0.3q = 1 - p = 1 - 0.3 = 0.7P(x < 4) = P(x = 0) + P(x = 1) + P(x = 2) + P(x = 3)
Using a binomial probability calculator :
P(x = 0) = 0.0576P(x = 1) = 0.19765P(x = 2) = 0.29648P(x = 3) = 0.25412Therefore,
P(x < 4) = (0.0576+0.19765+0.2965+0.25412) = 0.8059Learn more : https://brainly.com/question/12474772
fator the following problem x^2+12x+36
Answer:
(x-6)^2
Step-by-step explanation:
Hope this helped
Answer:
(x+6)2
Step-by-step explanation:1
What two numbers sum up to the middle term (6), and have a product of the last term (36)?
After some trial and error, we arrive at 6 and 6, which means we can factor this as
(x+6)(x+6) or (x+6)2
Another way we could have approached this is that we see that the leading term and the last term are both perfect squares.
With this in mind, we could rewrite the expression as
(x)2+12x+(6)2
Now, it becomes a little more clearer that we can factor this as
(x+6)2
The price of a cup of coffee has dropped to $2.50 today. Yesterday's price was $2.75. Find the percentage decrease. Round your answer to the nearest tenth of
a percent.
Answer:
9.1%
Step-by-step explanation:
The price of a coffee has dropped to $2.50
Yesterday the price was $2.75
Therefore the percentage decrease can be calculated as follows
= 2.50 - 2.75/2.75 × 100
= -0.25/2.75 ×100
= 0.09090 × 100
= 9.1%
Hence the percentage decrease is 9.1%