what is x2−4x−45=0 and what did you do

Answers

Answer 1
Add to 4x and multiple to -45

Related Questions

3(5x + 2) = -5(3x - 5) + 3x

Answers

Answer:

x=19/27

Step-by-step explanation:

[tex]3(5x+2)=-5(3x-5)+3x\\15x+6=-15x+25+3x\\15x+6=-12x+25\\27x=19\\x= 19/27[/tex]

Hope this helps plz hit the crown :D

[tex]3(5x+2)=-5(3x-5)+3x[/tex]

Distribute 3 in 5x+2 and -5 in 3x-5

[tex]15x+6=-15x+25+3x[/tex]

Multiplying 2 negatives will be positive (Same goes to dividing 2 negatives.)

[tex]15x+15x-3x=25-6[/tex]

Move the x term to the same side and constant term to the same side.

(Whenever you move to another side, change the sign/operator to opposite. From plus to minus and from multiply to divide.)

[tex]27x=19\\x=\frac{19}{27}[/tex]

Thus, the answer is 19/27

In ∆ABC, ∠A is a right angle, and ∠B measures less than 40°. Which of the following phrases best describes the measure of ∠C?

Answers

The phrase that describes the measure of ∠C is greater than 50°.

What is a right triangle?

A right triangle is a triangle that has one of its angle as 90 degrees.

The triangle is named as ABC.

∆ABC

where

∠A = 90 degrees

∠B < 40 degrees

The sum angles in a triangle is 180 degrees.

Therefore,

let x be the third angle

Hence,

∠A + ∠B + ∠C = 180°

∠B + ∠C = 180 - 90

∠B + ∠C  = 90°

∠B < 40 degrees

Therefore,

∠C > 50 degrees.

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1. Thomas has a deck of cards numbered 1-10. What is the probability that he draws an even number, does not replace it and then draws a 3?​

Answers

Answer:

0.0556

Step-by-step explanation:

Probability of even number.

1/2

Probability of a 3 from 9 cards

1/9

Probability or both:

1/2*1/9

0.0556

I'm pretty sure this is right

How many total hours does a grocery clerk work if he gets 4hr 30 min in the morning and 4 hr 15 min in the afternoon 5 days per week? Would this employee qualify for overtime? If so, how many hours of overtime would this employee qualify for?

Answers

Answer:

Step-by-step explanation:

8 hours 45 minutes a day for 5 days a week.

43.75 hours or 43 hours 45 minutes for total hours.

Depends what the overtime is for your country. Take the difference from overtime and total work.

PLEASE HELP AGAIN DUE TONIGHT WILL GIVE BRAINLIST!!!

Answers

Answer:

B. -3,072

Step-by-step explanation:

20 or 40 points-
I need help on question 17 not 15 or 16 only 17

Answers

Answer:

9.5 hours

Step-by-step explanation:

Question 1 options:
f(x) = -2x-1

f(-2) =

Answers

Answer:

f(-2) = 3

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Algebra I

Function Notation

Step-by-step explanation:

Step 1: Define

f(x) = -2x - 1

f(-2) is x = -2

Step 2: Evaluate

Substitute:                    f(-2) = -2(-2) - 1Multiply:                        f(-2) = 4 - 1Subtract:                       f(-2) = 3

Answer:

-5

Step-by-step explanation:

f(×)=2x-1

f(-2)=2×(-2)-1 (here,x= -2)

=-4-1

= -5

Find CD if C(0, 3) and D(4.7).​

Answers

It’s asking you to plot the numbers on a grid chart if given one if not make a your own grid chart and plot like is

Kenise will begin college as a freshman next fall and has received a 10-year $5,500 Federal Direct Unsubsidized Loan with an interest rate of 6.8%. She will be required to begin making payments six months after graduation. How much interest will accrue while she is still in school and over the six-month grace period?

Answers

Answer:

The interest accumulated will be $3,927

Step-by-step explanation:

Mathematically;

Simple interest = PRT/100

From the question, we have P as the amount borrowed = $5,500

R is the interest rate = 6.8%

T is the time which is 10 years + 6 months = 10 1/2 years

The interest accrued will thus be;

(5,500 * 6.8 * 10.5)/100 = $3,927

Review the diagram.
Awagon is being pulled by a force of 15 pounds. How
much work is done in moving the wagon 50 feet if the
handle makes an angle of 40° with the ground?
O 11.49 foot-pounds
O 38.30 foot-pounds
O 574.53 foot-pounds
O 750.00 foot-pounds

Answers

Answer:

C) 574.53 foot-pounds

Step-by-step explanation:

got it right on edge :)

Awagon is being pulled by a force of 15 pounds.  the required work done is 574.53 to pull the wagon So, Option C) is correct work done = 574.53.

What is work done?

The work done is product of force and cosine of displacement.

Given; Awagon is being pulled by a force of 15 pounds. We need to find How much work is done in moving the wagon 50 feet if the handle makes an angle of 40° with the ground.

Force = 15 pounds

distance = 50 feet

Ф = 40°

We can calculate the work done as;

work done = force x displacement x cosФ

work done = 15 x 50 x cos40

work done = 15 x 50 x 0.76

work done = 574.53

Therefore, the required work done is 574.53 to pull the wagon.

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What is the measure of angle x? (1 point)
1) 25 degrees
2) 40 degrees
3) 55 degrees
4) 105 degrees

Answers

Answer:

x=55degree because x+25=80 so x=55

Answer:

55°

Step-by-step explanation:

This is because that angle is 80° but is split into two and 80-25=55

- 7x > 24
solve this guys it's too urgent ​

Answers

Answer:

x> 24/_7

x>_3.43

..............

The answer must be x = -4

a hostel gets rs 5000000 net profit in a year .the hostel distributes rs 50000 to each workers equally .find the total amount of bonus received by 55 workers​

Answers

Answer:

pls state the question in another state

Step-by-step explanation:

okay

Select the correct answer.
2n
7
Which expression is equivalent to n + 4 + n - 1 if no denominator equals zero?

Answers

Answer:2n + 3

Step-by-step explanation:

The provided expression is equivalent to the first expression in the option, choice (A) is correct.

What is an expression?

It is defined as the combination of constants and variables with mathematical operators.

The question is incomplete.

The complete question is in the picture, please refer to the attached picture.

We have expressions:

[tex]\rm = \dfrac{2n}{n+4}+\dfrac{7}{n-1}[/tex]

[tex]\rm =\dfrac{2n\left(n-1\right)}{\left(n+4\right)\left(n-1\right)}+\dfrac{7\left(n+4\right)}{\left(n+4\right)\left(n-1\right)}[/tex]

[tex]\rm =\dfrac{2n^2+5n+28}{\left(n+4\right)\left(n-1\right)}[/tex]

Thus, the provided expression is equivalent to the first expression in the option, choice (A) is correct.

Learn more about the expression here:

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Help please, please only answer if you know, 20 points.

Answers

Answer:

Slope=8

Step-by-step explanation:

42. The Good Food n' More grocery store loses an average of $210 a day due to breakage, shoplifting, and food
expiration. How much money does the store lose on average per 7-day week?

Answers

$1470. Multiply $210 times 7 and it gives you an average of 1470

THIS IS URGENT PLS!!!

Answers

Answer:

b i believe

Step-by-step explanation:

Answer:

the answer is c

Step-by-step explanation:

y is slowly decreasing in both of them

pls help me. i suck at math and need help. pls help .​

Answers

Answer:

a= (4,-2) b= (6,-1) c= (6,2)

Are the two triangles congruent?

Choose 1 answer:

A. Yes

B. No

C. There is not enough information to say.

Answers

Answer:

The shown triangles have the same angles 96° and 61°, and the same length 6.

Thus, the two triangles are congruent.

Step-by-step explanation:

We know that two triangles would be termed as congruent If:

Their corresponding sides have equal lengthTheir corresponding angles have equal measure

The orientation of a congruent triangle can be different.

Consider the two triangles shown.

Though their orientation is different, both triangles have the same angles 96° and 61°, and the same length 6.

Therefore, the two triangles are congruent.

Answer:

Yes

Step-by-step explanation:

It’s right on khan academy

John and his family went out to eat. Their total
bill was $65 but they used a 10% coupon. How
much did John and his family spend at the
restaurant?

Answers

Answer:

$58.5

Step-by-step explanation:

plz mark as brainliest

2/3 of 2 is____
Please answer as quick as possible

Answers

Answer:

4/3

Step-by-step explanation:

2/3 TIMES 2 IS 4/3

f(x) = -x2
Find f(-5)

Answers

Answer:

f(-5) = -25

Step-by-step explanation:

f(-5) = -(-5)^2

f(-5) = -25

hope this helps, pls mark brainliest :D

Help me with this it’s for geometry

Answers

Answer:

110⁰

Step-by-step explanation:

It's a rule that in parallel intersections such opposite angles are congruent.

110 degrees because they are congruent angles

Simplify:
5x - 6x- 8x + 7

Answers

Answer:

-9x+7

Step-by-step explanation:

please help lol !!! :)

Answers

Answer:

C

Step-by-step explanation:

The 6 students
10,8,14,7,13,12. Find the mean and median round to the nearest tenth ​

Answers

Answer:

median is 10 or 12 and the mean is 10.6

Step-by-step explanation:

7, 8, 10, 12, 13, 14

-34 is less than 2 times -16

Answers

Answer:

False

Step-by-step explanation:

-34 is greater than 2 times -16 because 2 x -16=-32. -34>-32

URGENT! PLEASE HELP

The Greenland ice sheet contains about 3 million cubic kilometers of ice. If completely​ melted, this ice would release about 2.1 million cubic kilometers of​ water, which would spread out over​ Earth's approximate million square kilometers of ocean surface. How much would the sea level​ rise?

Answers

Answer:

Answer: 0.005523 kilometer = 5.52 meter In this case, you are asked how much the water height and given the water volume ( 1.9 million cubic kilometers) and the earth area (344milion square kilometers). To answer this question you just need to divide the volume with the area.

Angela has $2,200 to invest at a simple interest rate of 4.5%. If she wants to earn $297 in interest, how long does she have to invest her money?

Answers

Answer:

I will not give you an answer, but I will give you how too get the equation started.

Step-by-step explanation:

set up an equation using:

 

x= amount invested at 3%

 

7800 - x = amount invested at 12%

 

.03(x) + .12(7800 - x) = 504

 

.03x +936 - .12x = 504

 

-.09x = -432

 

x = 4800

PLEASE HELP! ILL GIVE BRAINLIEST!

Answers

Answer:

-5

Step-by-step explanation:

I think it is -5 as I used y=Mx+C where it is the intercept

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