algebra 1 lesson 7.1.4 jorunal

Answer:

equation: y=-2x+2

a=-3

b=-8

Step-by-step explanation:

we need to find the equation of the line containing the point (3,-4) and has the slope (m) of -2

slope-intercept form is given as y=mx+b, where m is the slope and b is the y intercept

we can plug what we know into the equation:

y=-2x+b

we need to find b though

since the point will pass through the point (3,-4) we can subsitute it into the equation to find b

-4=-2(3)+b

-4=-6+b

2=b

the y intercept is 2

so the equation is y=-2x+2

the line also contains the points (a,8) and (5,b)

first, let's find a

a is the x value of the point

we know the value of y (8)

substitute y as 8 and solve for x

8=-2x+2

subtract

6=-2x

-3=x=a

so a is -3

now find b

b is the y value of the point

we know the x value (5)

substitute x as 5 and solve for y

y=-2(5)+2

y=-10+2

y=-8=b

so b is -8

hope this helps!

Answer: Its the first one

Explanation:Yes because it is trust me yes

2/5 is the aneswer. beacuse 7/8/9/10 eqaul 4 times out of 10 to win 4/10 reduces down to 2/5.

Answer:

In SI base units: 1 m2  SI unit: Square metre

Step-by-step explanation:

Area is the quantity that expresses the extent of a two-dimensional region, shape, or planar lamina, in the plane. Surface area is its analog on the two-dimensional surface of a three-dimensional object.

ACF and ROB?  you didnt show the rest of the answer options

Answer:

A:1/18 B:1/6 for 4 and 1/3 for red

Step-by-step explanation:

Answer:

17 is what percent of 60? = 28.33.

what percent of 238 is 48 = 20.17

what percent of 365 is 40 = 10.96

Step-by-step explanation:

Answer:

the answer should be like -4, 1 if i'm not mistaken

Answer:

hope this helps you.keep it up..

Answer:

What is the length of EF: 12

What is the length of BC: 8

Step-by-step explanation:

Since there congruent shapes the line segments are gonna be the same lengths.

Answer:

Step-by-step explanation:

If the figures are congruent then BA and FE are equal. You only know this by the shape.

Answer:

D = 3 cm

Step-by-step explanation:

Given that,

The circumference of a circle is 9.45cm.

We need to find the length of the diameter.

The formula for the circumference of a circle is given by :

[tex]C=2\pi r[/tex]

We know that, Diameter = 2r

So,

[tex]C=D\pi\\\\D=\dfrac{C}{\pi}\\\\D=\dfrac{9.45}{\pi}\\\\D=3\ cm[/tex]

So, the length of diameter is equal to 3 cm.

Answer:

129.3 in²

Step-by-step explanation:

The shaded segment is calculated as

area of sector ABC - area of triangle ABC

area of sector = area of circle × fraction of circle

A = πr² × [tex]\frac{60}{360}[/tex]

   = π × 18² × [tex]\frac{1}{6}[/tex]

   = 324π × [tex]\frac{1}{6}[/tex] = 54π in²

area of Δ ABC = [tex]\frac{1}{2}[/tex] × 18 × 18 × sin60°  ≈ 40.30 in²

Then

shaded area = 54π - 40.30 ≈ 129.3 in² ( to the nearest tenth )

Answer:

if Y=-3 and 4y is the equation then the answer is -27

Answer:

4y=-12

4+y=1

Step-by-step explanation:

when y=-3

then you substitute the value of y into the questions

4(-3)=

4×-3

=-12

4+y

4+(-3)

we know that plus(+) multiplied by(×) minus(-) is equal to(=) minus(-)

so therefore,

4-3

=1

Answer:

a) 40

b)1h30m

Step-by-step explanation:

a) from graph

b) from 10:00 to 11:30 is 1h30min

Answer:

51.0

Step-by-step explanation:

Answer:

no because the parenthesizes means your multiplying

Step-by-step explanation:

Answer:

6/3

Step-by-step explanation:

Lisa is baking 3 cakes

Each cake required 2/3 water

Therefore the total needed to finish the cake can be calculated as follows

=>2/3 ×2

= 6/3

Hence 6/3 cup of water needed for the cake

Answer:

The graph in the middle with points all around the place would be the answer.

Step-by-step explanation:

The result of the survey showed no correlation, so there would be no pattern or trend line in the graph. So it cannot be the 1st graph or the 3rd.

Answer:

Im pretty sure its B.(2n+3)

Step-by-step explanation:

You start off with two dots and it keeps adding three in each picture, so yeah :)

Answer:

C

Step-by-step explanation:

Answer:

100%

300 students

Step-by-step explanation:

let b = number of students in the school

this equation can be derived = 10% x b = 30

to find b, divide both sides of the equation by 10%

b = 30/0.1 = 300

we want find the total number of students in the school, which is equal to 100%

Answer: -4x-6

Step-by-step explanation: 2(4x^2-x+1-6x^2+x-4)

2(-2^2-3)

-4x^2-6

Answer:

i got 616 for the answer good luck!!

Step-by-step explanation:

Answer:

B.) 205.3³

Step-by-step explanation:

                          Volume = (length·width·height) divided by 3

                                                            ⬇

                                                    V = (lwh)/3

                                                            ⬇

                                        V = (11·7·8)/3 ≈ 205.33333

                                                            ⬇

                                                        205.3³

Answer:

A

Step-by-step explanation:

Mark as brainllest

Answer:

A

Step-by-step explanation:

give fitzroywilliamsjr6 Brainllest plz

Answer:

The bigger pizza has a diameter of 14 inches, or a radius of 14 / 2 = 7 inches.

The smaller pizza has a diameter of 12 inches, or a radius of 12 / 2 = 6 inches.

Step-by-step explanation:

The area of a circle is πR2 where R is the radius.

The difference in the size of the pizzas is  

Area of bigger pizza - Area of smaller pizza

= π(7 inches)2 - π(6 inches)2 = = 49π inches2 - 36π inches2 = 13π inches2  

The area of the large pizza is 13π inches² larger than the area of the medium pizza.

The bigger pizza has a diameter of 14 inches,

a radius = 14 / 2 = 7 inches.

The smaller pizza has a diameter of 12 inches.

radius = 12 / 2 = 6 inches.

The area of the circle is defined as the product of the pie and the square of the radius.

The area of the circle =πR²

The area of a circle is πR², where R is the radius.

The difference in the size of the pizzas = Area of bigger pizza - Area of smaller pizza

= π(7 inches)² - π(6 inches)²

= 49π inches² - 36π inches²

= 13π inches²

Learn more about circle here;

brainly.com/question/12512221

#SPJ2

Answer:

C: 8.96

Step-by-step explanation:

We know taht ZX is similar to PQ. We can now set up the ratio of 6.4: 5.12

This ratio gives us .8:1

Multiply VX by the ratio to find its corresponding similar side of RQ

(11.2) * .8 = 8.96

Answer:

3 ,5 , and 2

Step-by-step explanation:

Hope it helps :)

Answer:

Chess board, arrow , kite , sign board

Step-by-step explanation:

A quadrilateral is a 2D shape which has 4 straight sides .

Answer:

1/8 square unit.

Step-by-step explanation:

Remark

The piece of information that is missing is     is the middle line parallel to 2 of the sides. You have to assume it is, otherwise the question is impossible to do.

Givens

The height of the red triangle is 1/2 the top or bottom white triangle. That's because the diagonals and the horizontal line all meet in the middle.

The base of the red triangle is equal to 1/2 the length of the base.

Formula

Area red = 1/2 b * h

Solution

b = 1/2

h = 1/2

Area = 1/2 * 1/2 * 1/2

Area = 1/8