Evaluate 8x^2 + 2x + 5, when x =7

Answers

Answer 1

Answer:

432

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Step-by-step explanation:

Step 1: Define

8x² + 5x + 5

x = 7

Step 2: Evaluate

Substitute in x:                                                                                                8(7)² + 5(7) + 5Evaluate exponents:                                                                                         8(49) + 5(7) + 5Multiply:                                                                                                             392 + 35 + 5Add:                                                                                                                 427 + 5Add:                                                                                                                 432

Related Questions

What is the measure of the missing angle?

Answers

Answer: 42

explanation is not needed

Ethan says that if the diameter of a bicycle wheel is 3.5 feet then its
radius must be 1.75 feet. Is Ethan correct?

Answers

Answer: Yes he is correct

Explanation:

The radius is half the diameter

radius = diameter/2 = 3.5/2 = 1.75

Answer:

yes hes right.

Step-by-step explanation:

d = 2 x 1.75

d = 3.5

c = 2 x pi x 1.75

c = 3.5

ur answer is 3.5 ethans right

Water is leaking out of an inverted conical tank at a rate of 12,500 cm3/min at the same time that water is being pumped into the tank at a constant rate. The tank has height 6 m and the diameter at the top is 4 m. If the water level is rising at a rate of 20 cm/min when the height of the water is 2 m, find the rate (in cm3/min) at which water is being pumped into the tank. (Round your answer to the nearest integer.)

Answers

Answer:

12500cm x3= 37500

6x3=18

37500+18=37518

13 POINTS MATH
Look at the image to see the problem!!

Answers

12+30+100=142 sry if I’m wrong

Help plz I’ll mark brainliest

Answers

Answer:

you're answer is definitely d

32%. The other answer included the percent of females that don’t own cars.

I really don’t understand slope graphs

Look at this graph, what is the slope?

Answers

Slope= 1/2x
Y-intercept= 3

Hope this helps

2(x + 4) + 5( 6 - x)​

Answers

Answer:

3x+32

Step-by-step explanation:

2(x+4) +5(6-x)

Use the distributive property

2x+8+24-5x

Simplify

3x+32

Please help my grades come out soon

Answers

The answer to the last problem, would mean that the right answer would be B. 0 ≤ m ≤ 500

C The triangles in this picture are similar. Find the height of the tree.

Answers

Answer:

Please find attached pdf

Step-by-step explanation:

I DONT KNOW WHAT IM DOING, PLEASE HELP

Answers

Answer:

you should check out Microsoft Math! It's a free app :)

Line l passes through point (0, -1) and is parallel to the line whose equation is y = -2x + 7. Which equation best describes the graph of line l? a) y = -2x + 6, b) y = 2x + 6, c) y = 1/2x - 1, d) y = -2x - 1

Answers

Answer:

[tex]y = -2x -1[/tex]

Step-by-step explanation:

Given

Passes through: (0, -1)

Parallel to: y = -2x + 7

Required

Determine the line equation

If the line is parallel to y = -2x + 7, then it has the same slope as y = -2x + 7.

For an equation of form: [tex]y = mx + b[/tex]

The slope is m

By comparison:

[tex]m = -2[/tex]

So, the slope of the extorted is -2.

The equation is then calculated using:

[tex]y = m(x - x_1)+ y_1[/tex]

[tex]y = -2(x - 0)-1[/tex]

[tex]y = -2(x )-1[/tex]

[tex]y = -2x -1[/tex]

The box plot describes the height of flowers selected randomly from two gardens. Use the box plot to find the median of Garden Y and Garden Z? (HELP PLEASE THIS IS FOR AN IMPORTANT TEST)

Answers

Answer:

Garden y median =6, garden z median =3

Answer: Look at the explanation please

Step-by-step explanation:

Garden Y has the median of 6 inches

Garden Z has the median of 4 inches

A comparative inference about thre two gardens would look like something like this

The flowers in Garnden Y generally grow taller than the flowers that are in Garden Z

Hopes this helps :)

15x120 helppp what is this and how do u get the answer

Answers

Answer:

if this is regular multiplication the answer is 1,800

Step-by-step explanation:

Complete the following statement.

Mac mixes 14 ounces of red paint with 6 ounces of blue paint. The ratio of blue paint to total paint is because for every 6 ounces of , there is 20 ounces of .

Answers

Answer:

The Ratio you are looking for is 5:8

Step-by-step explanation:

Answer:

6: azul

20: lila o morado

In a lab experiment, 5400 bacteria are placed in a petri dish. The conditions are such that the number of bacteria is able to double every 4 hours. How many bacteria would there be after 17 hours, to the nearest whole number?

Answers

It will become 45900 bacteria in 17 hours
Step-by-step explanation:
In 4 hours 5400 bacteria becomes 5400*2 = 10800
Therefore in 17 hours, it will become
17*10800/4
= 183600/4
= 45900

Answer:

1.62

Step-by-step explanation:

hope it helps god bless

Multiply and Simplify:
(5a+7b)(3a−8b)
Question 2 options:
15a2−19ab−56b2
15a2+21ab−56b2
15a2−56b2
15a2−40ab−56b2

Answers

The answer is 1. 15a2-19ab-56b2

200 percent of d is 18 what is d please help this is a question i have been needing help on for a long time

Answers

Step-by-step explanation:

what do u mean ??

200 per cent of 8???

If that's so, 200/ 8 * 100 = 2,500

Answer:

9

Step-by-step explanation:

When we calculate percentages, we multiply the numbers divided by 100. Therefore, 200% is the same as ×2.

need help ASAP Will mark u brainlyest

Answers

Step 2 is wrong: 4x - x = 5x
X = -11 is the actual answer, pretty sure.
Hope this helps and please mark as brainliest. If you have any other doubts, feel free to ask.

1. Mother gave donations worth Php 23 900.50 to the Children Foundation and
Php 32 097.50 to the Home for the Aged from her savings. If she had
Php 60 555.75 in her bag, how much money will be left to her?
What is asked?
What are given?
What operation should be used to solve the problem?
What is the number sentence?
What is the complete answer?​

Answers

Answer:

What is asked? Total amount left to her.

what are the given? Php 32,097.50 , Php 23,900.50 and Php 60,555.75

what operation should be used to solve the problem? Addition and subtraction

what is the number sentence? Php 23, 900.50+Php32, 097.50=n , Php 60, 555.75 - N = M

what is the complete answer? Php 14,557.75 is the total amount left to her.

How can you find the domain and range on this??

Answers

Answer:

1) Function

2) Set Notation

3) Domains: {-4, -2, -1, 1, 3, 4}

4) Ranges: {-3, -2, 0, 2, 3}

Step-by-step explanation:

1) This is a function because the x-values are NOT repeated, and it passes the vertical line test.

2) This is a set notation because it has the symbol --> {    } and it is "help define the elements of a set." You can search up "set notation" and you would get the idea. However, this is not an inequality because in inequality you would have, ex: x < 4 ≤ x

3) Domains mean the x-intercept. Remember to list domains from least to greatest!

4) Range means y-intercept. Remember to list the ranges from least to greatest! If a range is repeated then you do NOT need to re-write that number again.

Pls help me i have a min to finish pls I’ll make brainliest

Answers

answer:

it is not proportional.

step-by-step explanation:

14-10.50=3.5

17.50-14=3.5

24.50-17.50=7

in order for it to be proportional, they would all have to equal the same number and since in this case, they don't it is non-proportional

hopefully, this helps :)

have a nice day !!

i'm extremely sorry i couldn't help sooner :(

Which set of angle measures could be measures of the interior angle of a triangle?

Answers

Answer:

b

Step-by-step explanation:

23-105-45

Answer:  60°, 60°, and 60° is the set of interior angles of triangle.

The Earth is approximately 8.0 × 103 miles in diameter, from pole to pole. What number is the distance equivalent to?

Answers

Answer:

The diameter of earth  from pole to pole  is equal to [tex]8000[/tex] miles.

Step-by-step explanation:

The number to which the distance is equivalent is

[tex]8 * 10^3\\8 * 1000\\= 8000[/tex]

Thus, the diameter of earth  from pole to pole  is equal to [tex]8000[/tex] miles.

Evaluate c - 2 when c = 7.
Stuck? Watch a video or use a hint.
What is my final answer

Answers

Answer:

5

Step-by-step explanation:

Subtract 7-2=5.

1/4( -1 + 4)+3/5 please help ME missing work!

Answers

Answer:

1.35

Step-by-step explanation:

I believe this is right but it could be wrong. Hope this helps! <3

What base of this triangle


A. 10


B. 8


C. 80


D. 18

I gave Brainlist ​

Answers

Answer:

a is the base

Step-by-step explanation:

its right there

1. Frank is making a candle with the mold below. 4 in. 2 in. 2 in, He plans to fill half of the mold with wax. What volume of the mold will he fill? A 8 in. B 9 in.3 C 24 in. D 192 in.3​

Answers

Answer:

A

Step-by-step explanation:

4x2x2=16

16/2=8

In AJKL, the measure of ZL=90°, JK = 7.3 feet, and KL = 4.7 feet. Find the measure
of ZJ to the nearest tenth of a degree.

Answers

Answer:

40.1°

Step-by-step explanation:

JK is the hypotenuse of the right triangle.

For angle J, KL is the opposite leg.

sin A = opp/hyp

sin J = 4.7/7.3

J = sin^-1 4.7/7.3

J = 40.1

Answer: 40.1°

please give me the square root of 2

Answers

1.41421356 is the square root


Joanna is selling tickets for the school play $he ha$ already $old $35
worth of tickets. $he ha$ seven ticket$ left to sell for $5 per ticket. write
function to describe the total amount of money collected if she sells every single ticket

Answers

Answer:

okay, so given we have that she has already sold $35 worth of tickets. We know that she has seven tickets left to sell, and each is worth $5. So, we would do 7×$5=$35

Next, we would add $35(from the previous money she has made) and $35 (the money she just made from the 7 tickets) and that would equal $70

equation: y=35+7(5)

Step-by-step explanation:

I hope this helps! ^^

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