Which two statements true ?
Which is the best estimate for
written in scientific notation?
Answer:
3 x 10^4
(3rd option)
Step-by-step explanation:
8.9 divided by 3.3 is 2.69
8.9 is roughly 9
3.3 is roughly 3
9 divided 3 is 3
10^8 divided 10^4 is 10^4
when dividing numbers with exponents you subtract the exponents
so the best estimate is
3 x 10^4
If out of 15 pencils 2 times of the one third are disributed as priza how many pencils are left there
Answer:
Suppose there are x students,
a) 4 pencils x students+20 (*=multiplication)
b) 5 pencilsx students+10
But a = b so
4x+20=5x+10
x=10
4 10+20 or 5 10+10 = 60 pencils.
Hope it helps!!!Brainliest pls!!!Find the value of x for which m || n.
The value of x for which m | n is
n
Answer:
x=40
Step-by-step explanation:
The angles of both expressions (4x-28) and (3x+12) are congruent (alternating exterior angles). So, you can set up the equation 4x-28 = 3x+12 because both expressions are equivalent, so it makes sense. Then solve for x.
4x - 28 = 3x + 12
x - 28 = 12
x = 40
I Need Help In Solving For X
how much is 150 rolls of nickles
Answer: A roll of 150 nickels is $300 :)
2/n = 2/3
a. n=30
b. n= 3/4
c. n=3
d. n= 1 1/3
Answer:
C
Step-by-step explanation:
2/n=2/3
n=3
The equations are in the picture
Answer:
m∠R = 56°
Step-by-step explanation:
2(8x - 12) = 16x - 24
2(3x + 5) = 6x + 10
16x + 6x + 10 - 24 = 360
22x - 14 = 360
22x = 374
x = 17
3x + 5 = 17 x 3 = 51 + 5 = 56
Charlotte has 30 beads. She has 8 more red beads than blue beads.
Which equation represents this situation?
Answer:
I think it is the last One
Step-by-step explanation:
Answer:it’s the last one
Step-by-step explanation: I did the test
How many feet tall is it
I believe 12 inches because 1 ft is equal to 12 inches.
food is tight and you are given 98 oz. of bread every week. If you want to eat the same amount of bread every day, how many oz. should you eat each day?
Answer:
14 oz
Step-by-step explanation:
A week has 7 days and you need to ration your bread over them.
98 / 7 = 14
Determine whether the following represents a linear relationship or a nonlinear relationship.
Answer:
the answer to this is
A) nonlinear
Step-by-step explanation:
this is not linear because the line is not a line that goes in 1 direction. It has points of an increase and decrease so it is non linear
Answer:
it is not linear
Step-by-step explanation:
It is not a linear line because it is not going straight
List the prices for the first 8 carwashes of each package below.
Answer:
you might have to post a pic of the question
Solve using quadratic formula for 2x^(2)-10x+5=0
Answer:
[tex]x=\frac{5+\sqrt{15}}{2},\:x=\frac{5-\sqrt{15}}{2}[/tex]
Step-by-step explanation:
[tex]\mathrm{For\:a\:quadratic\:equation\:of\:the\:form\:}ax^2+bx+c=0\mathrm{\:the\:solutions\:are\:}[/tex]
[tex]x_{1,\:2}=\frac{-b\pm \sqrt{b^2-4ac}}{2a}[/tex]
[tex]\mathrm{For\:}\quad a=2,\:b=-10,\:c=5[/tex]
[tex]x_{1,\:2}=\frac{-\left(-10\right)\pm \sqrt{\left(-10\right)^2-4\cdot \:2\cdot \:5}}{2\cdot \:2}[/tex]
[tex]\sqrt{\left(-10\right)^2-4\cdot \:2\cdot \:5}[/tex]
Apply exponent rule: (-a)^n=a^n, if n is even
[tex]\left(-10\right)^2=10^2[/tex]
[tex]=\sqrt{10^2-4\cdot \:2\cdot \:5}[/tex]
[tex]\mathrm{Multiply\:the\:numbers:}\:4\cdot \:2\cdot \:5=40[/tex]
[tex]=\sqrt{10^2-40}[/tex]
[tex]10^2=100[/tex]
[tex]=\sqrt{100-40}[/tex]
[tex]\mathrm{Subtract\:the\:numbers:}\:100-40=60[/tex]
[tex]=\sqrt{60}[/tex]
[tex]60\:\mathrm{divides\:by}\:2\quad \:60=30\cdot \:2[/tex]
[tex]=2\cdot \:30[/tex]
[tex]30\:\mathrm{divides\:by}\:2\quad \:30=15\cdot \:2[/tex]
[tex]=2\cdot \:2\cdot \:15[/tex]
[tex]15\:\mathrm{divides\:by}\:3\quad \:15=5\cdot \:3[/tex]
[tex]=2\cdot \:2\cdot \:3\cdot \:5[/tex]
[tex]2,\:3,\:5\mathrm{\:are\:all\:prime\:numbers,\:therefore\:no\:further\:factorization\:is\:possible}[/tex]
[tex]=2\cdot \:2\cdot \:3\cdot \:5[/tex]
[tex]=2^2\cdot \:3\cdot \:5[/tex]
[tex]=\sqrt{2^2\cdot \:3\cdot \:5}[/tex]
Apply Radical Rule:
[tex]=\sqrt{2^2}\sqrt{3\cdot \:5}[/tex]
Apply Radical Rule:
[tex]\sqrt{2^2}=2[/tex]
[tex]=2\sqrt{3\cdot \:5}[/tex]
[tex]\mathrm{Refine}[/tex]
[tex]=2\sqrt{15}[/tex]
[tex]x_{1,\:2}=\frac{-\left(-10\right)\pm \:2\sqrt{15}}{2\cdot \:2}[/tex]
[tex]\mathrm{Separate\:the\:solutions}[/tex]
[tex]x_1=\frac{-\left(-10\right)+2\sqrt{15}}{2\cdot \:2},\:x_2=\frac{-\left(-10\right)-2\sqrt{15}}{2\cdot \:2}[/tex]
[tex]\frac{-\left(-10\right)+2\sqrt{15}}{2\cdot \:2}[/tex]
Apply Rule -(-a)=a
[tex]=\frac{10+2\sqrt{15}}{2\cdot \:2}[/tex]
[tex]\mathrm{Multiply\:the\:numbers:}\:2\cdot \:2=4[/tex]
[tex]=\frac{10+2\sqrt{15}}{4}[/tex]
[tex]=\frac{2\left(5+\sqrt{15}\right)}{4}[/tex]
[tex]\mathrm{Cancel\:the\:common\:factor:}\:2[/tex]
[tex]=\frac{5+\sqrt{15}}{2}[/tex]
[tex]\frac{-\left(-10\right)-2\sqrt{15}}{2\cdot \:2}[/tex]
[tex]=\frac{10-2\sqrt{15}}{2\cdot \:2}[/tex]
[tex]\mathrm{Multiply\:the\:numbers:}\:2\cdot \:2=4[/tex]
[tex]=\frac{10-2\sqrt{15}}{4}[/tex]
[tex]=\frac{2\left(5-\sqrt{15}\right)}{4}[/tex]
[tex]\mathrm{Cancel\:the\:common\:factor:}\:2[/tex]
[tex]=\frac{5-\sqrt{15}}{2}[/tex]
[tex]\mathrm{The\:solutions\:to\:the\:quadratic\:equation\:are:}[/tex]
[tex]x=\frac{5+\sqrt{15}}{2},\:x=\frac{5-\sqrt{15}}{2}[/tex]
Here are scores for two softball teams for seven innings. Rosie's Riveters beat The Susan Bees by how many runs?
here is the score
Answer:
3
Step-by-step explanation:
Rosie's Riveters
1 + 3 + 4 + 2 + 1 + 0 + 2 = 13
Susan Bees
0 + 0 + 5 + 3 + 0 + 1 + 1 = 10
To find out how many they beat the Susan Bees by you need to subtract.
13 - 10 = 3
Rosie's Riveters beat the Susan Bees by 3 runs.
Use the given equation to find the missing coordinates of the points and then find the slope of the line for each equation.
y= -2/3x+1/6, A(..., 6), B(9,...)
Expand the polynomial.
(-1-2a^2b)(1-2a^2b)
Was it this instead? [tex](-1-2a^{2}b)(1-2a^{2}b)[/tex]
Answer:
[tex]4a^{4b}-1[/tex]
Step-by-step explanation:
I am assuming your question is this.
[tex](-1-2a^{2b})(1-2a^{2b})[/tex]
Apply the difference of 2 squares formula.
[tex](a-b)(a+b)=a^{2} -b^{2}[/tex]
So then we have.
[tex](-1-2a^{2b})(1-2a^{2b})=(-2a^{2b})^{2}-1^{2}[/tex]
Then simplify.
[tex]4a^{4b}-1[/tex]
what is the standard form of the linear equation of the line through (-7,8) with a slope of 3/4
Answer:
See below.
Step-by-step explanation:
When graphed, the line would have a y-intercept of 13.25.
So, the equation would be y=3/4x+13.25.
-hope it helps
Please help! Will give brainiest if correct
Answer:
Step-by-step explanation:
First Choice
a candy company usually makes bags that have 100 candies in them? Each bag included 25 blue, 30 red, 25 green and 20 orange candies. If you had ten bags of candy in front of you and you reached into each one and grabbed just one candy how many red candies would you expect to have
The expected number of red candy that you will get out of 10 bags is 3 red candies.
How many red candies you would expect to get?
In each bag there are 100 candies, such that there are:
25 blue30 red25 green20 orange.All the candies have the same probability of being randomly selected, so the probability of getting a red candy is equal to the quotient between the number of red candies in each bag and the total number of candy.
P = 30/100 = 0.3
Then if you draw one candy of each bag of 10 bags, the expected number of red candies that you will have is 10 times the above probability:
N = 10*P = 10*0.3 = 3
3 red candies.
If you want to learn more about probability, you can read:
https://brainly.com/question/251701
please answer this equation fast !!!
Trey made a scale drawling of a micro chip using a scale of 2 inches long and 4inches wide
Answer:
Perimeter- 12 inches
Area- 8 inches
Shape- Rectangle
(I didn't know what the question was)
x^2+5y^2+2y=75; dx/dt =14 when x= 6 and y=-3; find dy/dt
Answer:
7
Step-by-step explanation:
x² + 5y² + 2y = 75
2x + 10y * dy/dx + 2 dy/dx = 0
2x + (10y + 2) dy/dx = 0
x + (5y + 1) dy/dx = 0
when x = 6, y = -3
6 + (-15 + 1) dy/dx = 0
6 - 12 dy/dx = 0
dy/dx = 1/2
dy/dt = dy/dx * dx/dt = 1/2 * 14 = 7
HELP PLEASE!!!!
Find the tangent line approximation to 21/x near x = 21.
21/x≈
Answer:
y = -0.05x + 2.05
Step-by-step explanation:
y = 21/x = 21x^-1
y' = -21x^-2 = -21/x^2
At x = 21 slope = -21/(21)^2 = -0.05 to nearest hundredth.
Tangent line is y - 1 = -0.05(x - 21)
y = -0.05x + 1.05 + 1
y = -0.05x + 2.05
What is the value of x? X
+ 4/9= 3/4
Answer:
X = 11/36
Step-by-step explanation:
First, find the common denominator of the fractions and convert them.
(4/9) x 4 = 16/36
(3/4) x 9 = 27/36
X + 16/36 = 27/36
Now you can solve for X
X = 11/36
The fraction cannot be simplified
Assume the random variable X has a binomial distribution with the given probability of obtaining a success. Find the following probability, given the number of trials and the probability of obtaining a success. Round your answer to four decimal places.
P(X≥18), n=20, p=0.9
4. You are given 20 boxes. 19 of the boxes each have 20 balls weighing 30kg per ball. However, one box has 20 balls weighing 29kg each. All the balls and boxes are identical in appearance. You are asked to determine which box contains the 29kg balls. You have a suitable scale, but may only take a single measurement. No other measurements may be taken (like trying to determine by hand). You may remove balls from the boxes but may still only take one measurement. How can you determine the box with 29kg balls.
To find out the box number the boxes, extract the same number of balls as the number of the box, calculate the total weight.
What are the steps to find the box with the 29 kg balls?Considering you can only weigh the balls extracted once and you need to find the box with balls that are 1-kilo lighter; here are the steps you can follow:
Number the boxes from 1 to 19.Extract the same number of balls as the number given to the box. For example, from box 9 extract 9 balls.Weight all the balls together.Find out the box with the 29 kg balls. Here is an example:The total weight using this method would be 6,300 kg which is the result of adding 30 kg (first box) + 60 kg (second box)... However, since there is a box with lighter balls the total weight will be less.
Let's imagine the weight is 6,290, this means there are 10 fewer kilos and therefore the box with the lighter balls is box 10 since this is the box number from which 10 balls were extracted.
Learn more about weight in: https://brainly.com/question/10069252
Write answer in Simplest Form
the product of number is 1 236 if one factor is 103 what is the other factor?
12 or 10 or 9 or 8?
Answer:
The other factor is 12⇒ A
Step-by-step explanation:
The factors of a number are all the numbers multiplied to form this number
Examples:
The factors of 12 are 1, 2, 3, 4, 6, 12 because
1 × 12 = 12
2 × 6 = 12
3 × 4 = 12
∵ The product of numbers = 1236
∵ One factor of that number is 103
∴ ------ × 103 = 1236
→ Divide the number by its factor to find the other number
∴ 1236 ÷ 103 = -------
∵ 123 ÷ 103 = 1 R 20
∵ 206 ÷ 103 = 2
∴ 1236 ÷ 103 = 12
∴ The other factor is 12
Spencer can do a piece of work in 20 days and Toby in 25 days. They began to work together.
But Spencer leaves after some days. Toby finish the remaining work in 11 days. After how many
days did Spencer leave?
Show work
Answer: spencer left after 14 days
Step-by-step explanation: