Harold had 1400 stamps he gave 350 of them to his brother and the rest to his sister.

a)what percent of the stamps did he give to his brother
b)what percent of the stamps did he give to his sister

Answer:

P( cinder cones ) =  13/37

P ( shield ) =  18/37

P ( stratovolcanoes) =  6/37

Step-by-step explanation:

We need to find the total number of volcanoes

13 +18 + 6 = 37

P( cinder cones ) = number of cinder cones/ total = 13/37

P ( shield ) = number of shield /total = 18/37

P ( stratovolcanoes) = number of Strato /total = 6/37

Answer:

Let's take each share by itself first.

First, the value of each share rose by 2. So we have +2. Then it fell by 5. So we have 2 - 5 = -3. Each share has a net value of negative 3.

Dave owns 15 shares. So 15 * (-3) = -45.

-$45

Answer: 6.25,-5

Step-by-step explanation:

all you have to do is go along the x and then the y-axis. the point is roughly 6.25 and because the y-axis is below 0 it will be minus therefore -5.

Answer:

57

Step-by-step explanation:

⟼ 9 + 6( 2² + 4)

Using PEMDAS which stands for;

Parenthesis, exponents, multiplication, division, addition, subtraction

Solve parenthesis first

With Multiplication second

⟼ 9 + 6 (2² + 4)

⟼ 9 + 6 (4 + 4)

Now it time to add the parenthesis

⟼ 9 + 6(8)

PEMDAS

Multiply before adding

⟼ 9 + 48

PEMDAS

Add 9 and 48

⟼ 57

Answer:

n≤6

Step-by-step explanation:

90=3.72x+11.65+56

90=3.72x+67.65

22.35=3.72x

6.008=x

Answer:25

Step-by-step explanation:

the whole triangle equals 180

add 99+56 which gives you 155.

do 180-155 which gives you 25.

Answer:

A

Step-by-step explanation:

Step-by-step explanation:

12y = -5x + 13

y = -5/12 x + 13/12

The slope-intercept form is y = -5/12 x + 13/12.

Answer:

I Hope it help u  dear

Step-by-step explanation:

As given that ,

5x+12y=13

As we know the standard form of slope intercept form,

y=mx+ c

12y=13-5x      (subtracting 5x from both sides)

y=13/12-(5/12)x   (dividing 12 to both sides

Answer:

x = 3

Step-by-step explanation:

Perform the indicated multiplication.  We get  

8x - 6 - 8 = 4 + 2x

Combining the x terms results in:

6x - 14 = 4

Isolate x by adding 14 to both sides:

6x = 18

Find x by dividing both sides by 6:

x = 18/6 = 3

x = 3

The solution or the value of x for the given linear equation 2(4x-3)-8=4+2x is x = 3.

Given that:

2(4x - 3) - 8 = 4 + 2x

Use the distributive property on the left-hand side.

(2 × 4x - 2 × 3) - 8 = 4 + 2x

(8x - 6) - 8 = 4 + 2x

Using the associative property:

8x + (-6 - 8) = 4 + 2x

8x - 14 = 4 + 2x

Subtract both sides by 2x.

8x - 2x - 14 = 4

6x - 14 = 4

Add 14 on both sides.

6x = 18

Divide both sides by 6.

x = 3

Hence, the value of x is 3.

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Answer:12

Step-by-step explanation:15$/10 times 20$=120/10=12$

Answer:

5040

Step-by-step explanation:

Answer:

here

Step-by-step explanation:

Answer:1 and 2 is a function. But the third one isn't. explanation: When there is more than one point on a vertical line that is not a function.

Answer:

Step-by-step explanation:

With respect to angle Ф in the right triangle shown:

the opposite side is the leg LP, and

the adjacent side is the leg LM, and

the hypotenuse is MP.

The "perpendicular" is the leg LP, in which case the "base" is LM.  Notice that these two legs are perpendicular to one another.

To estimate the volume using the Midpoint Rule with \(\displaystyle n=5\), we need to divide the interval \(\displaystyle 0\leq x\leq 1\) into \(\displaystyle n\) subintervals of equal width. Since \(\displaystyle n=5\), each subinterval will have a width of \(\displaystyle \Delta x=\frac{1-0}{5}=\frac{1}{5}\).

Now, let's calculate the volume using the Midpoint Rule. The formula for the volume obtained by rotating about the y-axis is:

\(\displaystyle V\approx 2\pi \sum _{i=1}^{n}y_{i}\Delta x\)

where \(\displaystyle y_{i}\) represents the value of the function \(\displaystyle y=\sqrt{1+x^{3}}\) evaluated at the midpoint of each subinterval.

First, let's find the midpoints of the subintervals. Since the width of each subinterval is \(\displaystyle \Delta x=\frac{1}{5}\), the midpoint of the \(\displaystyle i\)-th subinterval is given by:

\(\displaystyle x_{i}=\frac{\Delta x}{2}+\left( i-\frac{1}{2}\right) \Delta x=\frac{1}{10}+\left( i-\frac{1}{2}\right) \frac{1}{5}\)

Substituting \(\displaystyle x_{i}\) into the function \(\displaystyle y=\sqrt{1+x^{3}}\), we obtain:

\(\displaystyle y_{i}=\sqrt{1+\left( \frac{1}{10}+\left( i-\frac{1}{2}\right) \frac{1}{5}\right) ^{3}}\)

Now, we can calculate the approximate volume using the Midpoint Rule:

\(\displaystyle V\approx 2\pi \sum _{i=1}^{5}y_{i}\Delta x\)

Substituting the values of \(\displaystyle y_{i}\) and \(\displaystyle \Delta x\) into the formula, we can evaluate the sum and compute the estimated volume.

\(\huge{\mathfrak{\colorbox{black}{\textcolor{lime}{I\:hope\:this\:helps\:!\:\:}}}}\)

♥️ \(\large{\underline{\textcolor{red}{\mathcal{SUMIT\:\:ROY\:\:(:\:\:}}}}\)

Answer: WDYM SPRED

Step-by-step explanation:

Answer:

you didnt put enough context in your question but if shana kept using three she would have mixed even and odds in her numbers if you could give more context to the question id be glad to help more

Answer:

5^10 * 5^3

Step-by-step explanation:

5^10 * 5^3

= (5*5*5*5*5*5*5*5*5*5) * (5*5*5)

= 5*5*5*5*5*5*5*5*5*5*5*5*5

= 5^13

Answer: A) Reflection across the y-axis

Answer: 396

Step-by-step explanation:

Answer:

-5 5/8  or -5.625

Step-by-step explanation:

Answer:

3 1/8

Step-by-step explanation:

Answer:

The first on is 5 dollars per chore

Step-by-step explanation:

for every chore you get 5 dollars you can see because the first set is 3 chores you get 15 dollars and 3 divides by 15 equals 5

Answer: 5 dollars per chore

Answer: D

Step-by-step explanation: hope it helps

Answer:

Option B and C

Step-by-step explanation:

\(5^{-6}\) x \(5^{4}\) / \(5^{-4}\)

\(5^{-2}\) / \(5^{-4}\)  =  \(5^{2}\)

 \(5^{2}\) = 25

Option B : 25

and C :  \(5^{2}\)

I hope im right!!

Answer:

Step-by-step explanation:

The formula for percent change is

\(\frac{original-new}{original}*100\)

Therefore,

\(\frac{250-100}{250}*100=60\)%

Answer: 60%

Step-by-step explanation:250 - 100 = 150

150/250 = 60/100 = 60%

Answer:

f(x) = 26(x - 2)

Step-by-step explanation:

I’m pretty sure the answer should be 1,710 if not i’m sorry

Answer:

1710 fish

Step-by-step explanation:

Let the number of fish in the lake last year be 'x'

The equation becomes-
x + 15x/100=6210     (This is because 15% of x is added in x to become    
6210... hope you understand)

x + 15x/100 = 6210
115x/100 = 6210
23x/20 = 6210
x = 6210 * 20/23
x = 270 * 20
x = 5400

Therefore- The number of fish last year = 5400


Now, let the number of fish in the lake 2 years ago be 'y'

The equation becomes-
y + 20y/100 = 5400     (Same logic as last time)

y + 20y/100 = 5400
120y/100 = 5400
24y/20 = 5400
6y/5 = 5400
y = 5400 * 5/6
y = 900 * 5
y = 4500

Therefore- Fish in the lake two years ago = 4500 fish

Difference between current and two years ago = 6210-4500
                                                                               = 1710 fish

Hope you understood the answer and I hope it helps you :)

Answer:a

Step-by-step explanation:

The solution to the equation ax² + bx + c = 0 , has a graph that crosses the y-axis once and does not intersect the x-axis, then the equation has one real root and two complex conjugate roots that lie on either side of the axis of symmetry.

A quadratic equation is a second-order polynomial equation in a single variable x , ax² + bx + c=0. with a ≠ 0. Because it is a second-order polynomial equation, the fundamental theorem of algebra guarantees that it has at least one solution. The solution may be real or complex.

The roots of the quadratic equations are

x = [ -b ± √ ( b² - 4ac ) ] / ( 2a )

where ( b² - 4ac ) is the discriminant

when ( b² - 4ac ) is positive, we get two real solutions

when discriminant is zero we get just one real solution (both answers are the same)

when discriminant is negative we get a pair of complex solutions

Given data ,

Let the quadratic equation be represented as A

Now , the value of A is

If the graph of the equation ax² + bx + c = 0 crosses the y-axis once, it means that the equation has one real root. This is because when x = 0, the equation becomes:

c = 0² + 0 + c = c

Therefore, the point (0, c) is on the y-axis, which means the graph crosses the y-axis once.

If the graph does not intersect the x-axis, it means that the discriminant b² - 4ac is negative. This is because the discriminant determines the nature of the roots of a quadratic equation, and when it is negative, the roots are complex (not real) and the graph does not intersect the x-axis.

So, the solution(s) of the equation ax² + bx + c = 0 are:

x = (-b ± √(b² - 4ac)) / 2a

Since the discriminant is negative, the term inside the square root is negative, and there are no real solutions for x. Instead, the solutions are complex conjugates of the form:

x = (-b ± i√(4ac - b²)) / 2a

where i is the imaginary unit. Since the real part of these solutions is -b/2a, which is the axis of symmetry of the parabola, and the parabola does not intersect the x-axis, the complex roots will be a conjugate pair that lie on either side of the axis of symmetry.

Hence , the quadratic equation is solved

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