Write an algebraic expression to model the unknown number situation. the sum of five and a number Complete each statement to explain how to model this situation. Replace “a number” with . Replace “sum” with . Replace “five” with . The correct algebraic expression is .

Answer:

75 degrees

Step-by-step explanation:

All the interior angles of a triangle add up to 180 degrees. Knowing this, we can construct the following equation:

180=65+40+x

180=105+x

Subtract both sides by 105

180-105=105+x-105

75=x

Therefore, angle C has a measure of 75 degrees.

I hope this helps!

Answer:

35 is its width and 63 is its length.

Step-by-step explanation:

7 x 5 = 35 and 98 - 35 equals 63 which is the length.

Answer:

The area of the piece of paper is 466 cm²

Step-by-step explanation:

First you would want to find the area of the rectangle

39x20=780 cm²

Both semi-circles are the same, so you can just find the area of the whole circle

The diameter is 20 cm so you would use 10 as the radius

A=πr²

A=3.14x10²

A=3.14x100

A=314

Then you have to subtract the area of the circle from the area of the rectangle.

780-314=466

The area of the piece of paper is 466 cm²

Answer:

rotation? I think I'm not sure to or reflection

Answer:

rotation

Step-by-step explanation:

size, shape, and angle measures are preserved but orientation is not

Answer:

a). -6x³ - 12x²    b). -12     c). 12

Step-by-step explanation:

a). (g x f)(x) can also equal f(g(x))

= f (2x +4)

= -3x² (2x+4)

= -6x³ - 12x²

b). f(g(-1))

g(-1) = 2(-1) + 4

= -2 + 4

= 2

f(2) = -3x²

= -3(2)²

= -12

c). g(h(3))

h(3) = 3x-1/2

= 3(3) - 1 / 2

= 4

g(4) = 2x + 4

= 2(4) + 4

= 12

Given:

In triangle DEF, [tex]DE = EF[/tex] and [tex]m\angle 98^\circ[/tex].

To find:

The measure of angle EFD.

Solution:

In triangle DEF,

[tex]DE = EF[/tex]           (Given)

It means triangle DEF is an isosceles triangle.

[tex]m\angle EDF=m\angle EFD[/tex]           (Base angles of an isosceles triangle are equal)

Using angle sum property in triangle DEF, we get

[tex]m\angle DE F+m\angle EFD+m\angle EDF=180^\circ[/tex]

[tex]98^\circ +m\angle EFD+m\angle EFD=180^\circ[/tex]

[tex]2m\angle EFD=180^\circ-98^\circ[/tex]

[tex]2m\angle EFD=82^\circ[/tex]

Divide both sides by 2.

[tex]m\angle EFD=\dfrac{82^\circ}{2}[/tex]

[tex]m\angle EFD=41^\circ[/tex]

Therefore, the measure of angle EFD is 41 degrees.

it is gonna be c trust me I know for a fact

Step-by-step explanation:

Hi...

You ask any irrelevant Question, that is why they get deleted.

Answer:

60 miles

Step-by-step explanation:

There are two ways to solve this:

1. They tell you that you drive at 60 miles an hour, so , in an hour, you drive 60 miles.

2. Is the way you should use in the future:

Distance = speed * time

Substitute the speed and times.

Distance = 60 * 1

Thus, you drive 60 miles in one hour

The distance that should be traveled be 60 miles

As we know that

[tex]Speed = \frac{distance}{time}[/tex]

Here

speed be 60 miles per hour

And, the time should be one hour

So, the distance should be

[tex]= 60\ miles\ per hour \times one\ hour[/tex]

= 60 miles

Therefore the distance that should be traveled be 60 miles

Learn more about the distance here:brainly.com/question/23774048

Answer:

that number is in standard form

Answer:

Step-by-step explanation:

I’m not smart

Answer:

(4,-4)

Step-by-step explanation:

(x-value, y-value)

Answer:

(4, -4)

Step-by-step explanation:

Just look at the X axis  first and then the Y axis

The X axis is the horizontal line

and the y is the verticle line

[tex]6\pi = \boxed{18.9ft}[/tex]

9514 1404 393

Answer:

  18 6/7 ft

Step-by-step explanation:

The circumference is given by the formula ...

  C = 2πr

The circumference of the larger circle is then ...

  C' = 2π(r+3) = 2πr +6π

The difference in circumference is ...

  C' -C = (2πr +6π) -(2πr) = 6π

For the given value of π, the difference in circumference is ...

  (22/7)(6 ft) = 132/7 ft = 18 6/7 ft

The circumference of the outer circle is greater by 18 6/7 ft.

Answer:

11

Step-by-step explanation:

a + 4 when a = 7

First, plug in 7 for a.

7 + 4

Add.

11

This is your answer.

Hope this helps!

Answer:

ill help u lol im pretty positive its 8

Answer:

answer is 1

Step-by-step explanation:

$41.25

100%->$55.00

1%->$55.00÷100=$0.55

25%->$0.55×25=$13.75

100%-25%=75%

Price of sweatshirt during sale->75%->$55.00-$13.75=$41.25

Answer:

5 years

Step-by-step explanation:

Hope I helped!

Answer:

i was proud of myself when I finally figured out a difficult math problem. I didn't even ask for help. it was a hard time for me but I eventually came through.

Answer:

y = -x + 2, B is the answer

Step-by-step explanation:

If slope is -1, the equation is y = -x+b

Plug in (3,-1) into that equation.

-1 = -3 + b

b = 2

Answer:

The answer is below

Step-by-step explanation:

A triangular pyramid is a pyramid with a triangular base. It is a polyhedron (3 dimensional shape) composed of four triangular faces, six straight edges, and four vertex corners.

The surface area of a triangular pyramid with congruent equilateral triangles = 4 * area of one triangle

Area of one triangle = (1/2) * base * height  = (1/2) * 15 in * 13 in = 97.5 in²

Surface area of pyramid = 4 * 97.5 in² = 390 in²

Answer:

35 dogs

Step-by-step explanation:

40% more than 25 is 35

Answer: The answer is net B

Step-by-step explanation: If you look at the net it has one rectangle for the base and four triangles for the side. Then when you look at the completed figure the shapes are the same. Also all the other nets have the wrong shapes.

Hope this helps.

(Edit- was lookin at the wrong stuff answer = d lol sorry

Answer:

this Question

The manager of a home-improvement store is reviewing last year's profit from paint and paint-related accessories. In January, the store earned 5% of its $60,000 profit from paint and paint-related accessories. Based on this information, the manager estimates that the store earned $30, 000 from paint and paint-related accessories last year. A: Is the managers estimate correct? Why or why not? B: Which answer shows the correct estimate for the store's total profit from paint and paint-related accessories last year? Select one answer that is completely correct for question A and select one answer for question B B: $3,000 A: No, the manager incorrectly used the statistic established from his research to estimate the given parameter A: No, the manager incorrectly used the parameter established from his research to estimate the given statistic. A-Yes, the manager correctly used the parameter established from his research to estimate the given statistic. A: Yes, the manager correctly used the statistic established from his research to estimate the given parameter. B: $30,000 B: $15,000 B: $36, 000 A grocery store surveys 200 random customers to see how frequenty they will buy Charlie's Chocolate Cereal. The results indicate that 30 people will by the cereal month Estimate the number of customers that will buy the cereal monthly if 20.000 people shop at the store each m Enter your answer as a number, like this:42 A university conducts a study of tobacco use among 1000 of its students. Researchers survey male volunteers and female volunteers to find the frequency of tobacco use. The study finds that, of the people surveyed, 250 men and 50 women regularly use tobacco. The university concludes that male students use tobacco more frequently than female students. Which of the following situations would create a lurking variable that could impact the study? There may be more than one correct answer. Select all that apply. D if the university surveyed only men who used tobacco at least once in high school, participarnt history would be a lurking variable. nif the university extended the study to include 2000 participants, the number of participants would be a lurking variable. If the university surveyed more men than women, the number of male and female participants would be a lurking variable. If the university surveyed only students aged 18 to 22, the age f participants would be a lurking variable if the university conducted surveys between only 8 a.m, and 2 p.m., the time of day would be a