Which equation would describe "two times a number plus five equals 15"?

Answer:

the perimeter of this trapzoid is 26.5.

Sorry if I am wrong and please do correct me if I am wrong.

Step-by-step explanation:

Answer:

[tex]Pr(A\ or\ B) = \frac{1}{2}[/tex]

Step-by-step explanation:

Given

[tex]S = \{21,22,23,24,......40\}[/tex]

[tex]n(S) = 20[/tex]

[tex]A = \{21,24,27,30,33,36,39\}[/tex] -- Divisible by 3

[tex]B = \{23, 29, 31, 37\}[/tex] --- Prime numbers

Required

[tex]Pr(A\ or\ B)[/tex]

This is calculated as:

[tex]Pr(A\ or\ B) = Pr(A) + Pr(B) - Pr(A\ n\ B)[/tex]

Using probability formula, we have:

[tex]Pr(A\ or\ B) = \frac{n(A) + n(B) - n(A\ n\ B)}{n(S)}[/tex]

Where:

[tex]A = \{21,24,27,30,33,36,39\}[/tex]

[tex]n(A) = 7[/tex]

[tex]B = \{23, 29, 31, 37\}[/tex]

[tex]n(B) = 4[/tex]

[tex]A\ n\ B =\{\}[/tex]

[tex]n(A\ n\ B) = 0[/tex]

So:

[tex]Pr(A\ or\ B) = \frac{n(A) + n(B) - n(A\ n\ B)}{n(S)}[/tex]

[tex]Pr(A\ or\ B) = \frac{7 + 3 - 0}{20}[/tex]

[tex]Pr(A\ or\ B) = \frac{10}{20}[/tex]

[tex]Pr(A\ or\ B) = \frac{1}{2}[/tex]

Answer:

2

Step-by-step explanation:

2-2=4 which is equal to 4

Answer:

5/8 - 1/4

Step-by-step explanation:

because it makes more sense I don't know how to explain

Answer:

4th option.

Step-by-step explanation:

The number getting subtracted is 5/8 since there are 5 boxes shaded in.

The number subtracting from it is 2/8 but that is not an option so the only other option equivalent to 2/8 is 1/4.

5/8 - 1/4 = 3/8 so the answer would also need to include 3/8 as the difference.

The only choice with all this is the 4th one

Answer: A.

Step-by-step explanation:

Ya que cada dado tiene como maximo un numero 6 y si a esto se le suma el hecho de que son 4; es imposible que el resultado sea mayor a 24.

Answer:

m = 2

General Formulas and Concepts:

Algebra I

Slope-Intercept Form: y = mx + b

Perpendicular lines have a negative reciprocal slope.

Step-by-step explanation:

Step 1: Define

y = -1/2x + 4

Step 2: Identify

Slope m = -1/2

Step 3: Solve

Reciprocate and multiply by negative

m = 2

Algebra I

Slope-Intercept Form: y = mx + b

Perpendicular lines have a negative

reciprocal slope.

[tex]\pink:\implies[/tex]Define

y= -1/2x +4

[tex]\:[/tex]

[tex]\pink:\implies[/tex]ldentify

Slope m = -1/2

[tex]\:[/tex]

[tex]\pink:\implies[/tex]Solve

Reciprocate and multiply by negative

[tex]\dashrightarrow[/tex] m = 2

Answer:

10,000.33 GH¢

Step-by-step explanation:

Let's say p = original price and d is discount

so discounted price = p*(1-d%)

From the given data,

7600 = p * (1-0.25)

p = 7600/0.75

p = 10,000.33

Answer:

y = 1/2 x - 2

Step-by-step explanation:

The standard linear equationof a line is expressed as y = mx+b

Using the coordinate points (0, -2) and (2, -1)

Slope m = -1-(-2)/2-0

m = -1+2/2

m = 1/2

Since the line cuts the y axis sat y = -2, hence the intercept b = -2

Get the required equation;

Recall that y = mx+b

y = 1/2 x + (-2)

y = 1/2 x - 2

This give the required linear equation

Answer:

4 ≤ x ≥ -7

I think this is right. I'm not 100% sure! But maybe it will help :)

Answer:

x ≥ -7 ≤ 4

Step-by-step explanation:

Answer:

[tex]x+y=2[/tex]

[tex]y=-x+2[/tex]

[tex]slope (m)=-1[/tex]

[tex]slope ~of ~perpenddicular ~line:-[/tex]

[tex]-1/m_{2}[/tex]

[tex]\frac{-1}{-1} =1[/tex]

------------------------

hope it helps...

have a great day!

Answer:

Girl's plot

Step-by-step explanation:

The exact question is as follows :

Given - The dot plots compare the number of raffle tickets sold by boys and girls during a school fund-raiser.

To find - Which plot has an outlier?

Proof -

The correct answer is - Girls

Reason -

Girls plot has an outlier because values way outside the majority of the data.

Definition of outlier -

A value that "lies outside" (is much smaller or larger than) most of the other values in a set of data.

Here in the Girl's plot we can see that, all the dots are close but there is one dot that is lies outside

But in Boy's plot all the dots are close to each other , no dot is lies outside to any other dots.

So,

The correct option is -

Girl's plot has an outlier.

Let x = p+qi be the complex root and x = r be the the real root. The p and q are real numbers.

Multiply the two factors like so:

(x-p-qi)(x-r)

y(x-r) ..... let y = x-p-qi

xy - ry ..... distribute

x( y ) - r( y )

x( x-p-qi ) - r( x-p-qi ) ........ plug in y = x-p-qi

x^2 - px - (qi)x - rx + pr + qr*i ........ distribute

x^2 + (-px-qi*x-rx) + (pr+qr*i)

x^2 + (-p-qi*-r)x + (pr+qr*i)

x^2 + ((-p-r)-qi*)x + (pr+qr*i)

We end up with an expression in the form ax^2 + bx + c where the coefficients are:

The coefficients b and c are complex numbers. So it is possible to have one real root and exactly one complex root; however, as shown above, it leads to some of the coefficients being complex numbers. I'm assuming your teacher wants all coefficients to be real numbers. If that's the case, then a quadratic equation cannot have one real root and one complex root. You would need to have the complex roots come in conjugate pairs. Meaning that if a quadratic equation with real coefficients has a complex root, then there's another complex root as its nearly "twin" pair so to speak.

Recall that quadratic equations have at most 2 roots according to the fundamental theorem of algebra. Having 2 complex conjugate pairs for the roots will then mean there isn't enough room for that third real root. In other words, here are all the possible scenarios:

Again this only applies if all coefficients a,b,c are real numbers. For scenario B, the root repeats itself and we consider it a double root. For instance, x^2+10x+25 = 0 has the root x = -5 repeat itself. In scenarios A and B, we don't have any complex roots happen.

Because always that we have a discriminant different than zero, we have two solutions.

A quadratic equation has complex roots when its discriminant is negative, where for the general quadratic:

y = a*x^2 + b*x + c

The discriminant is:

D = b^2 - 4ac

And the solutions of the roots are:

[tex]x = \frac{-b \pm \sqrt{b^2 - 4ac} }{2a}[/tex]

Because we have two possible signs for the square root of the discriminant, we always will have two solutions when the discriminant is different than zero.

If you want to learn more about quadratic equations, you can read:

https://brainly.com/question/1214333

Answer:

sefsefff

Step-by-step explanation:

Answer:

1/3

Step-by-step explanation:

Probability calculates the likelihood of an event occurring. The likelihood of the event occurring lies between 0 and 1. It is zero if the event does not occur and 1 if the event occurs.

For example, the probability that it would rain on Friday is between o and 1. If it rains, a value of one ids attached to the event. If it doesn't a value of zero is attached to the event.

Experimental probability is based on the result of an experiment that has been carried out multiples times

Based on experience, the band sells out 2 out of its 6 shows. So, the experimental probability of selling out its next show = 2/6

To transform to the simplest form. divide both the numerator and the denominator by 2

1/3

Answer:

Tn=n+9

Step-by-step explanation:

Tn=n+9

T15=15+9

T15=24

Answer:

                      Male                   Female            Total

American 11/17 = 0.647  l 6/17 = 0.353 l 17/17 = 1.000

Non-American 9/23 = 0.391 l 14/23 = 0.609 l 23/23 = 1.000

Step-by-step explanation:

Answer:

4ft

Step-by-step explanation:

4ft is the ansjdjfjdjsdmdhdkd

Answer:

B

cause when dividing you are subtracting the exponents

so it 4^-3+1 = 4^-2

you shouldnt have negative exponents

so you flip it, which become 1/4^2

Hope that answers your question

Don't hesitate to comment if you are confused about something

Step-by-step explanation:

Answer:

E because is covered all angle

< DCE ≅ < GCF must be true

Hence Option A and E are true statements.

A circle has a total of 360 degrees all the way around the center, so if that central angle determining a sector has an angle measure of 60 degrees, then the sector takes up 60/360 or 1/6, of the degrees all the way around. In that case, the sector has 1/6 the area of the whole circle.

According to the given figure:

DE ≅ FG

So < DCE ≅ < GCF must be true

Because DE ≅ FG

< DCE ≅ <GCF is similar to DE ≅ FG

Hence, < DCE ≅ < GCF must be true

Hence Option A and E are true statements.

Learn more about angles of circle here

https://brainly.com/question/23247585

#SPJ2

Answer:

24

Step-by-step explanation:

Answer:

slope = 5

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

y = 5x + 4 ← is in slope- intercept form

with slope m = 5

Answer:

-15

Step-by-step explanation:

Answer:

nth term = -5n + 30

Step-by-step explanation:

Given sequence:-

25 20 15 10 5

To find the nth term, we have to find the algebraic expression, Xn.

Xn = dn + b

Here, 'd' means the common difference and 'b' means 'first term -- common difference'

the common difference here is -5

So, b = 25 - (-5)

b = 25 + 5

b = 30

Xn = -5n + 30

Therefore, nth term equals -5n + 30

Answer:

-x2+4=-x=4-2=2

-x=2

x= -2

Answer:

Mass

Step-by-step explanation:

Answer:

83 degrees

Step-by-step explanation:

We can use the consecutive angle theorem to find the the value of x.

We can do that by doing 5x+10.5+6x+10 = 180

After simplifying, we get 11x+20.5=180

Subtract 20.5 on both sides and you get 11x=159.5.

Divide by 11 on both sides and you get x=14.5

Now we can use opposite angle theorem and set angle N and angle T equal.

That means we could write 5x+10.5 = m<T

We can substitute 14.5 for x and we get 72.5+10.5 = m<T

Simplify and you get 83 = m<T

----------------------------------------------

Hope this helps!

Answer:

notice the two angles are vertical to each other making them equal to each other

for the first angle add 45 and 15 together to get 60

set 60 = 4x (the other angle using the vertical angle congruence theorem)

solve for x gives us 15

Step-by-step explanation:

Answer:

2m+4b+4a

Step-by-step explanation:

should be this

Answer:

i am not sure man sry

Step-by-step explanation:

2m+4b+4 i found the answer!

Answer:

List Price = $ 8.75

Discount Amount = $ 1.75

[tex]volume = \frac{1}{3} \times \pi \times {r}^{2} \times h[/tex]

Plugging in our values,

[tex]volume = \frac{1}{3} \times 3.142 \times {1}^{2} \times 2 = \frac{1}{3} \times 3.142 \times 2 = 2.095{m}^{3} \\ [/tex]

So the answer is,

[tex]2.095{m}^{3} [/tex]

Step-by-step explanation:

Answer

(z+15)

Use the quadratic formula to get the answer you seek.

You should arrive at

(z-6)(z+15)