Mathematics High School

need help with both questions please​

Need Help With Both Questions Please

Answers

Answer 1

Answer:

vertical angle are congruent

because BD and CE intersect and intersecting lines make vertical angle

Step-by-step explanation:

Related Questions

3x+2x=20. What is the answer dor this equation. ​

Answers

5x=20

Divide 5 by each side

x=4

factorise the following
a) 5x-x²
b) x²-6x-27
c) x²+x-56
d) x³+8
e) 3x⁴-54t
f) x²+3x-10
g) 2(x⁴+x³-12x²)
h) 20(x³-1)​

Answers

Answer:

Below.

Step-by-step explanation:

a) 5x-x² = x(5 - x).

b) x²-6x-27 = (x - 9)(x + 3).

c) x²+x-56 = (x - 7)(x + 8).

d) x³+8 = (x + 2)(x^2 - 2x + 4)

e) 3x⁴-54t = 3(x^4 - 18t)

f) x²+3x-10 = (x - 2)(x + 5)

g) 2(x⁴+x³-12x²) = 2x^2(x + 4)(x - 3)

h) 20(x³-1)​ = 20(x - 1)(x^2 + x + 1)

Simplfy the answer t-4t2/t2

Answers

Answer:

t - 16

Step-by-step explanation:

Hope this helps!! :))

which expressions are equivalent to 4 (4a + 5)
choose 3 answers

A. 16a + 5
B. 16a + 20
C. 12a + 20 + 4a
D. 2 (8a + 10)
E. 16a + 5 + 4

Answers

Answer:

B 16a + 20

Step-by-step explanation:

4(4a + 5) = 4 times 4a + 4 times 5

= 16a + 20

Hello.My question is......what are my chances of rolling a 4 when i throw a dice if i rollo it two times?

Answers

Answer:

Step-by-step explanation:

3

Answer:

1/6 because wanting to roll a four every time you roll a dice is going to be a 1.6 chance since there is only one 4

Step-by-step explanation:

Alexa is y years old. Nate is 22 years old, and Alexa is one-half Nate's age Which equation shows an equality between two different ways of expressing Nate's age? OA) 22 = 2y OB) 22 = 2 + y OC) 22==y - 22 OD 22 = y2​

Answers

Answer:

A. is the correct answer

Step-by-step explanation:

Stay safe.

When deriving the Quadratic Formula, we start with the general equation for a quadratic:

Answers

Answer:

Step-by-step explanation:

c sss

Find the slope for the table.

Answers

Answer:

2

Step-by-step explanation:

as x increases by 2, y increases by 4, slope= rise/run, so the slope= 4/2=2

si el examen tenia 44 puntos y saque 40 ¿Que nota tengo?

Answers

Answer:

90%

Step-by-step explanation:

Solve the system of equations using substitution.
X + y = 13
x - y = 5
Please help

Answers

Answer:

x=9

y=4

Step-by-step explanation:

Given a circle with radius 5cm and using π=3.14 calculate it's circumference (I will make you Brainliest)​

Answers

Answer:

Circumference = 31.4 feet

Area= 78.5 sq. feet.

Step-by-step explanation:

brainliest please?????

someone please help me

Answers

i think it’s the last one

Solve the quadratic equation 2x + x-7 = 0
Give your answers to 2 decimal places.

Answers

[tex]\text{Its not a quadratic equation but the answer is 2.33}[/tex]

7075806785463087580370x98437532794395798243757934

Answers

Answer:

6.9652496e+47

Step-by-step explanation:

Answer:

use calculator to solve this equation

Need Asap pls
Find the excluded value of the Following. Make sure to show the solution.
1. - 4/b + 6
2. x - 1 / (x - 3) (x + 4)

Answers

Number 1 is -4/6 + 6

learnt this topic a while ago and somehow completely forgot could someone explain?

Answers

Answer:

99.5

Step-by-step explanation:

in right angle triangle

sin x = opposite side / hypotenuse

sin 34 = x  / 178

x  = sin 34 * 178

= 99.5

The sum of 3 odd integers is 33. what is the second integer? (and how would I show my work)​

Answers

33 / 3 = 11. 11 is the middle term of the three consecutive numbers. So, the other two numbers are obviously 10, the first term, and 12
11

If you do 33/3 it is 11

PLS HELP ME IMMA CRY ONGG GGHGHJH

Answers

Answer:

127

Step-by-step explanation:

We started at 7

We keep going up 3

multiply

[tex]3\cdot40=120[/tex] Now add [tex]120+7=127[/tex] at the 40th term

Answer:

I believe its 127?

Step-by-step explanation:

I solved this by 7+3x40 and that was my answer.

Please tell me if its wrong, if so tell me what the correct one is. :)

Have a good day!

What fraction of 1 km is 725 m?​

Answers

Answer:

It is 725/1000.

Step-by-step explanation:

The fraction can be simplified but that will result in a loss of information about its accuracy.

have a great day!

725/1000 hope this helps you !!!!

what is the coefficient of the first term in the expression 8x+3y+4


a: y

b: 3

c: x

d: 8

Answers

Answer:

d

Step-by-step explanation:

the first term is 8x. 8 is the coefficient and x is the base. so the answer is 8.

Pls help ASAPI don’t understand can you show steps too pls

Answers

Answer:

x = -2 , y = -1

(-2,-1)

The angle of elevation from the tip of the shadow to the top of the tree is 36°. Find the distance from the top of the tree to the tip of the shadow. Round the answer to the nearest tenth. A. 26. 7 feet b. 30. 2 feet c. 40. 8 feet d. 42. 9 feet.

Answers

The expression that represents the required distance is [tex]\mathbf{ s = \frac{h}{0.5878}}[/tex]

The given parameters are:

[tex]\mathbf{\theta =36^o}[/tex] --- the angle of elevation to the top of the tree

To do this, we make use of the following representations

s represents the distance from the tip of the shadow to the top of the treeh represents the height of the tree

The distance (s) is then calculated using the following sine ratio

[tex]\mathbf{ sin(\theta) = \frac{h}{s}}[/tex]

Make s the subject

[tex]\mathbf{ s = \frac{h}{sin(\theta)}}[/tex]

Substitute [tex]\mathbf{\theta =36^o}[/tex]

[tex]\mathbf{ s = \frac{h}{sin(36)}}[/tex]

Evaluate sin(36)

[tex]\mathbf{ s = \frac{h}{0.5878}}[/tex]

The height of the tree is not known.

Hence, the expression that represents the required distance is [tex]\mathbf{ s = \frac{h}{0.5878}}[/tex]

Read more about elevations and distance at:

https://brainly.com/question/14550522

The expression that represents the required distance is

The given parameters are:

--- the angle of elevation to the top of the tree

To do this, we make use of the following representations

s represents the distance from the tip of the shadow to the top of the tree

h represents the height of the tree

The distance (s) is then calculated using the following sine ratio

Make s the subject

Substitute

Evaluate sin(36)

The height of the tree is not known.

Hence, the expression that represents the required distance is

Read more about elevations and distances at:

brainly.com/question/14550522

#SPJ4

tatiana had $350. she spent $180 on herself ad the rest on presents for her family.writ an equation to express how much tatiana spent on her family.

Answers

Answer:

$350 - $180 = $170

$180 = T

$170 = F

T = Tatiana

F = Family

Step-by-step explanation:

Answer:

Equation to express how much Tatiana spent on her family

= $(350-180)

The population mean for a college Introduction to Biology quiz is 15 points. A sample of 45 high school seniors earns an average of 18.54 points. A 90% confidence interval for the true mean of high school seniors is [15.87, 21.20]. Based on this confidence interval, what would your decision be in regard to a 2-tailed null with an alpha level of 0.1

Answers

Answer:

C) Reject null, because 15 is not in the interval.

Step-by-step explanation:

Work out the midpoint A of the line segment B, where A(3,10) and B(5.8).

Answers

Answer:

Midpoint of (3,10) & (5,8) is (4,9)

Dave throws sweets upwards at a speed of 8ms^-1 from a first floor window to his sister Carol who is standing at a second floor window 3m directly above Dave. Carol misses catching the sweet as it passes her hand on the way up, but catches it on the way down. Calculate the time it takes for Carol to catch the sweet after Dave has thrown it.

Answers

It would take [tex]1 second[/tex] for Carol to catch the sweet after Dave threw it.

Let

[tex]h=\text{maximum height}\\y=\text{distance from maximum height to Carol}\\t_h=\text{time taken to reach maximum height}\\t_y=\text{time taken to fall from maximum height to Carol}[/tex]

we want to calculate the value [tex]t_h+t_y[/tex]

First, we have to calculate [tex]t_h[/tex] using the formula

[tex]v=u+at[/tex]

using [tex]v=0[/tex], [tex]u=8[/tex], [tex]a=-10[/tex] (the sweets are decelerating due to gravity!)

[tex]0=8-(10)t_h\\10t_h=8\\t_h=\frac{8}{10}=0.8seconds[/tex]

To calculate [tex]t_y[/tex], first calculate [tex]h[/tex], then [tex]y[/tex]. Using the formula

[tex]h=ut+\frac{1}{2}at^2[/tex]

and the values [tex]u=8[/tex], [tex]t=t_h=0.8[/tex], [tex]a=-10[/tex] (again, the sweets are decelerating to get to maximum height)

[tex]h=(8)(0.8)+\frac{1}{2}(-10)(0.8)^2\\\\=6.4-3.2\\=3.2m[/tex]

since, Carol is standing [tex]3m[/tex] above Dave, we have the relationship

[tex]h=y+3[/tex]

so that

[tex]y=h-3\\=3.2-3\\=0.2m[/tex]

we can now calculate [tex]t_y[/tex];

[tex]y=ut_y+\frac{1}{2}gt_y^2[/tex]

taking [tex]y=0.2[/tex], [tex]u=0[/tex], [tex]g=10[/tex] (the sweets are falling, so they are now accelerating)

[tex]0.2=(0)t_y+\frac{1}{2}(10)t_y^2\\\\0.2=5t_y^2\\t_y^2=0.04\\\implies t_y=0.2seconds[/tex]

So it would take

[tex]t_h+t_y=0.8+0.2=1.0seconds[/tex]

for Carol to catch the sweet after Dave threw it from the first floor.

Learn more here: https://brainly.com/question/84352

8. Makayla and Haylee are selling oranges for a school fundraiser. Customers can buy small boxes of oranges and large boxes of oranges. Haylee sold 6 small boxes and 12 large boxes for a total of $330. Makayla sold 12 small boxes and 4 large boxes for a total of $280. a. Write a system of equations that gives the cost of one small box of oranges and one large box of oranges.

b. Find the cost of a small box of oranges and the cost of a large box of oranges​

Answers

Answer:

x = 55 - 2y

y = 70 - 3x

x = 17

y = 19

Step-by-step explanation:

let x = small box

y = large box

6x + 12y = 330

12x + 4y = 280

6x + 12y = 330

6x = 330 -12y

6x/6 = (330-12y)/6

x = 55 - 2y

12x + 4y = 280

4y = 280 -12x

4y/4 = (280 -12x)/4

y = 70 - 3x

small box cost:

x = 55 - 2y

x = 55 - 2(70-3x)

x = 55 -140 + 6x

x - 6x = -85

-5x = -85

x = 17

large box

y = 70 - 3x

y = 70 - 3(17)

y = 70 - 51

y = 19

if the output number y is -52 (y=5x-2) what is the input number? SHOW WORK

Answers

Answer:

-10

Step-by-step explanation:

The 'y' variable is associated with outputs and the 'x' variable is associated with inputs.

[tex]y = 5x-2\\\rule{150}{0.5}\\-52 = 5x - 2\\\\-52 + 2 =5x - 2 + 2\\\\-50 = 5x\\\\\frac{-50=5x}{5}\\\\\boxed{-10 = x}[/tex]

-10 (x) should be the input number.

Answer:

x = -10

Step-by-step explanation:

Equation:

-52 = 5x - 2         [tex]\longmapsto[/tex]       Add 2 to both sides

-50 = 5x              [tex]\longmapsto[/tex]       Divide both sides by 10

x = -10

-Chetan K

ANSWER PROPERLY FOR BRAINLIEST OR ELSE I REPORT

Answers

Answer:

A: 0.3

B: 0.3

Step-by-step explanation:

Basically both answers are the same

A bag contains three red marbles, three blue marbles, and three yellow marbles. You randomly pick three marbles without replacement. The first marble is red, the second marble is blue, and the third marble is red.

Answers

Answer:

first one is yellow

Step-by-step explanation:

Other Questions
Find the angles of a triangle which are in the ratio 4:3:2. please help meeeee c: Think about a group of cells that are undergoing very frequent cell divisions (e.g. cells that are part of a growing embryo). Suppose that you looked at 100 of these cells. How many of these cells would you expect to be in interphase A fundamental basis of regression analysis is the assumption of a. the lack of a relationship between independent variables. b. a curvilinear relationship between two weakly associated dependent variables. c. a uniform normal distribution between dependent variables. d. a straight-line relationship between the independent and dependent variables. e. the existence of two independent variables for every dependent variable. What is commensalism Should people who are able to break a hashing algorithm be allowed to post their findings on the Internet? What is 5 times 9 divided 5 add 40 subtract 100 Choose the response that best completes the following statement."If you're not sure if you should be on a site or signing up for a profile, ________." ask permission consider the outcome don't say it online use the 5-second pause Which of the following is NOT a possible tax or deduction that could be withdrawn from your paycheck? will giver brainliest to the person with the most detailed answer. That means tell me how you got ur answer. And the person who answers with the most clear explanation as well. Good luck!! This is due in 8 minutes as well. And pls number ur answers in order so it is clear!! How to integrate absolute value. Spanish QuestionHow to solve this type of question what is the sum of the polynomials(8x^2-9y^2-4x) + (x^2-3y^2-7x) complete the table by indicating the change in each determinant necessary to increase aggregate demand. What is the value of y in the following system of equation3x-4y=-20 -x+2y=10 How to divide long division with decimals. How many solutions are there to the equation shown below?4(2x3)2x=6x+8pls answer ASAP I will give brainliest to the first geoligest in egypt and ethiopia are comparing rock samples from rocks founf in two contries what is 282.74 in terms of pi I im ored does nyone nn tlk?