Solve the quadratic equation using any appropriate method.
- 2x2 + 7x - 7 = 0

Answers

Answer 1
X=11/7 i think that would be the answer

Related Questions

A carpet store has 8 commercials every hour on a local television station. How many commercials will have in 525 hours?

Answers

Answer:

4,200 commercials

Step-by-step explanation:

525 times 8 equals 4,200

For your birthday, you want to take a group of friends to an indoor trampoline
center. There are two trampoline parks available on your date. You only have
$250 to spend on your party.
Pricing Information:
Sky High: $50 for a party set up fee and $5 per person after that. Write an inequality model for both trampoline parks.
Jump it Up: $70 for a party set up fee and $2 per person.
In jump it up you can bring 90 friends.
In Sky high, you can bring 40 friends.

Answers

Answer:

Skyhigh : 40 friends

Jump it up : 90 friends

Step-by-step explanation:

Given that :

Total amount available to spend = $250

JUMP IT UP:

Party set up fee = $70

Amount paid per person = $2

Number of friends = 90

SKY HIGH:

Party set up fee = $50

Amount paid per person = $5

Number of friends = 40

INEQUALITY :

Party setup fee + amount per person * Number of persons ≤ available amount to spend

SKY HIGH:

50 + 5x ≤ 250

5x ≤ 250 - 50

5x ≤ 200

x ≤ 200/5

x ≤ 40

Hence,

Skyhigh = 90 friends

JUMP IT UP:

70 + 2x ≤ 250

2x ≤ 250 - 70

2x ≤ 180

x ≤ 180/2

x ≤ 90

Jump it up = 90

Plsss help due In 5 minutes

Answers

The vertex is 2, -1 :) djdnsnsnnsn

Answer:

(2, -1)

Step-by-step explanation:

By definition, a vertex is a point where two or more curves, lines, or edges meet; just look at the graph to determine that point/relative extrema.

john can decorate 3 christmas trees in 2 hours so how long will it take to decorate 12 christmas trees?

Answers

Answer:

8 hours

Step-by-step explanation:

3×4 is 12 so.. just take 4 and multiply by 4 as well

Answer:

8 hours

Step-by-step explanation:

[tex]Let\ the\ time\ taken\ by\ John\ to\ decorate\ 12\ Christmas\ Trees\ be\ x\\Hence,\\Through\ the\ ratio\ method\ (Of\ multiplying\ the\ means\ and\ the\ extremes;\\3:2::12:x\\3x=24\\x=8[/tex]

Is this a function

Yes or no

Answers

Answer:

yes.

Step-by-step explanation:

by performing the vertical line test, you can see that the line only goes through one point, so it is a function.

Answer:

yes

Step-by-step explanation:

it passes the vertical line test (you could draw a vertical line anywhere on the graph, and it wouldn't pass through the graph more than once.

Ms smartypants. Has 246 crayons for her art class of 22 students how many crayons will each student get if the crayons are divided equally

Answers

Answer:

11

Step-by-step explanation:

246 divide by 22

95 points need help match these to each other please

Answers

Answer:

1. Least common multiple

2. Least common denominator

3. multiple

4. solve

5. solution

Step-by-step explanation:

Answer: 1: connects with box number one

              2: connects with box number five

              3: connects with box number two- i think

              4: connects with box number three

              5: connects with box number four

♡ Glued

Sam is 12. In four years, his age will be 2/3 the age of his cousin Lupe. How old will Lupe be in two years?

Answers

Answer:

8

Step-by-step explanation:

Question 9
Determine the domain of the following relation.
input 3 5 6 8
Output 1 3 6

A
{3, 6}

B
{1, 3, 6}

C
{3, 5, 6, 8}

D
{1, 3, 5, 6, 8}

Answers

Answer:

C. { 3, 5, 6, 8 }

Step-by-step explanation:

The domain is the set of all possible inputs in a function.

The domain of the given function is;

C. { 3, 5, 6, 8 }

Consider the line y=8x-2 find the equation of the line that is parallel to this line and passes through the point (-5,2)

Answers

Answer:

the answer is y=8x+42

Step-by-step explanation:

y-y=m(x-x¹)

y-2=8(x-(-5))

y-2=8x+40

+2 +2

y=8x+42

An experiment consists of tossing an unfair coin (48% chance of landing on heads) a specified number of times and recording the outcomes.

a. What is the probability that the first head will occur on the second trial?
b. Does the probability change if we toss the coin three times? What if we toss the coin four times?

Answers

Answer:

a. [tex]Probability = 0.2496[/tex]

b. No, it won't change

Step-by-step explanation:

Represent [tex]the\ head[/tex] with H and [tex]Tail\ with[/tex] T

Such that:

[tex]P(H) = 48\%[/tex]

Solving (a): First head in second trial

First, we determine P(T) i.e. the probability of obtaining a tail

[tex]P(H)+P(T) = 100\%[/tex]

[tex]P(T) = 100\% -P(H)[/tex]

Substitute 48% for P(H)

[tex]P(T) = 100\% -48\%[/tex]

[tex]P(T) = 52\%[/tex]

If the first head is obtained in the second trial, the probability is:

[tex]Probability = P(T\ and\ H)[/tex]

[tex]Probability = P(T)\ and\ P(H)[/tex]

[tex]Probability = P(T)\ *\ P(H)[/tex]

[tex]Probability = 48\%* 52\%[/tex]

[tex]Probability = 0.2496[/tex]

Solving (b): Will it change if tossed three or four times?

Irrespective of the number of times the coin is tossed, the probability of obtaining a head in the second toss will always be the same because the coin has to be tossed twice before the third and the fourth time.

uri plots point S at (Negative 1, 2.5). Which graph shows the location of point S?
On a coordinate plane, point S is 1 unit to the right and 2.5 units up.
On a coordinate plane, point S is 2.5 units to the right and 1 unit down.
On a coordinate plane, point S is 1 unit to the right and 2.5 units down.
On a coordinate plane, point S is 1 unit to the left and 2.5 units up.

Answers

Answer:

its A.

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

I took the test!

Hope this helps plz give brainliest :D

I need 20 characters to post this so ignore

Answers

KSKDWKDKSODMEMFKSCK HHHHhhhHhHhHhHhhsenfjsockwmf

Zoom it in if u can’t see

But what is the slope

Answers

-2 please mark brainliest if you will. Have a great day

Answer:

5/-2

Step-by-step explanation:

the slope formula is rise over run. the rise is 5 and the run is -2. in decimal form the answer is -2.5

A survey of 1000 Californians finds reports that 48% are excited by the opportunity to take a statistics class.
The margin of error in this report is 5%. Which answer choice best describes a reasonable range of values for the percent of
students who are excited to take a statistics class?

Answers

Answer:

(0.449, 0.511) is the range for the percent of students who are excited to take a statistics class

Step-by-step explanation:

First of all, let's check that the sample size is large enough to use normal approximation.

Conditions are;

np > 10

n(1-p) > 10

Now, we have;

n = 1000

p = 48% = 0.48

Thus;

np = 1000 × 0.48 = 480 > 10

Also;

n(1 - p) = 1000 × (1 - 0.48) = 520 > 10. This means the conditions for normal approximation have been fulfilled. Hence we can use the confidence interval formula to get the range of values which is;

CI = p ± z√(pq/n)

We are given a margin of error and thus the confidence interval is at 95%.

Critical value of z at 95% CI is 1.96

Thus;

CI = 0.48 ± 1.96√(0.48 × 0.52/1000)

CI = 0.48 ± 0.031

CI = (0.449, 0.511) is the range for the percent of students who are excited to take a statistics class

I just want to tell you, that ya'll all beautiful even if you think your not.BE free and live your life by yourself or with others. You are one of a kind. So I love you and Hope you have a bless day. Thank you

Answers

Answer:

awww XD thats awesome thankyou made my day :)) hope you have a good day :P good people like you sharing kindness is good we need more of that.

Step-by-step explanation:

:P best wishes to you homie

whats the answer (5x+4y)(x-y)

Answers

Answer:

5x²-xy-4y²

Step-by-step explanation:

1. Stop guys I need help!
3 1/2 -2 1/2


Answers

Step-by-step explanation:

3 1/2 = 7 /2

2 1/2 = 5 /2

7/2 - 5/2

= 2/2 = 1

hope it helpful

Jack is mixing a cleaning solution that is 15% bleach. After mixing the solution, Jack has 150 ounces of cleaning solution. How many ounces of bleach did Jack use?

Answers

Answer:

22.5 ounces

Step-by-step explanation:

150 times .15



Find the slope of the line that passes through (4, 1) and (6, 2).

Answers

The formula to solve for slope is:
Y2-Y1/X2-X1

Details:
X is the left number of the point, Y is the right number of the point. The 1 means the first point, 2 means the second point.

Y1= 1
Y2= 2
X1= 4
X2= 6

2-1= 1
6-4= 2

Slope= 1/2

I hope this helped you! :)



The owner of an Apple orchard wants to buy more trees the table below shows the cost for buying different numbers of trees. pls help me

Answers

Answer:

We conclude that the cost of 10 trees will be: $350

Step-by-step explanation:

From the table, it is clear that:

The cost of 6 trees = $210

So the cost of 1 tree = 210/6 = $35

The cost of 13 trees = $455

So the cost of 1 tree = 455/13 = $35

The cost of 18 trees = $630

So the cost of 1 tree = 630/18 = $35

Thus, the table indicates that the cost of 1 tree = $35

In other words,

unit rate = $35 per tree

Therefore, the cost of 10 trees will be: 35 × 10 = $350

Thus, we conclude that the cost of 10 trees will be: $350

Find the sum of the interior angle measures of the polygon

Answers

Since it’s an octagon and it has eight sides, the interior angle sum would be 1080 degrees

Refer to the figure.




If m∠BDC=(8x+12)° and m∠FDB=(12x−32)°, find m∠FDE.

Answers

Answer:

x=11

Step-by-step explanation:

And you didnt give the equation for FDE but substitute 11 in for X

35-(-8) find the difference

Answers

[tex]Answer:[/tex]

[tex]43[/tex]

[tex]Step-by-step~explanation:[/tex]

[tex]35-(-8)[/tex]

[tex]35 + 8[/tex]

[tex]= 43[/tex]

what is opposite of the opposite of -1.4​

Answers

Answer:

The opposite of -1.4 is 1.4 :)

Step-by-step explanation:

Answer:

1.4

(It says I need 20 characters so I put this)

on what interval is the function h(f)=|x+2|-2 increasing ?

Answers

Answer:

The increasing interval is [tex]S=(-2,\infty)[/tex]

Step-by-step explanation:

This absolute function has a vertex in x=-2. Now, from this point, the function has a positive slope (increasing), which means for values of x equals to -1,0,1,2,3,...,n.

Therefore the interval will

[tex]S=(-2,\infty)[/tex]

I hope it helps you!

P(x) = x4 – 7x3 + 14x2
+ 14x2 – 3x – 9
Find all real zeros

Answers

Step-by-step explanation:

x4-7x3+14x2-3x-9

This deals with polynomial long division.

Overview

Steps

Topics

Links

1 result(s) found

(x

2

−x−1)⋅(x−3)

2

See steps

Step by Step Solution:

More Icon

Reformatting the input :

Changes made to your input should not affect the solution:

(1): "x2" was replaced by "x^2". 2 more similar replacement(s).

STEP

1

:

Equation at the end of step 1

((((x4)-(7•(x3)))+(2•7x2))-3x)-9

STEP

2

:

Equation at the end of step

2

:

((((x4) - 7x3) + (2•7x2)) - 3x) - 9

STEP

3

:

Polynomial Roots Calculator :

3.1 Find roots (zeroes) of : F(x) = x4-7x3+14x2-3x-9

Polynomial Roots Calculator is a set of methods aimed at finding values of x for which F(x)=0

Rational Roots Test is one of the above mentioned tools. It would only find Rational Roots that is numbers x which can be expressed as the quotient of two integers

The Rational Root Theorem states that if a polynomial zeroes for a rational number P/Q then P is a factor of the Trailing Constant and Q is a factor of the Leading Coefficient

In this case, the Leading Coefficient is 1 and the Trailing Constant is -9.

The factor(s) are:

of the Leading Coefficient : 1

of the Trailing Constant : 1 ,3 ,9

Let us test ....

You can solve the following proportion by cross multiplying. What will the equation be after you cross multiply?
3 x= 9 • 15
3 x = 15
3 • 15 = 9 X
15 = 9 X

Answers

Answer: C) 3*15 = 9*x

=====================================

Explanation:

Anything in the form A/B = C/D will cross multiply to A*D = B*C

In this case, A = 3, B = 9, C = x and D = 15

So that's why 3/9 = x/15 cross multiplies to 3*15 = 9*x

Check out the diagram below for more information.

Solve the equation.
4+ 14 = – 2(7x-9)

Answers

Answer:

-63

Step-by-step explanation:

In 1965, about 44% of the U.S. adult population had never smoked cigarettes. A national health survey of 1472 U.S. adults (presumably selected randomly) during 2010 revealed that 677 had never smoked cigarettes.Suppose you wished to test whether there has been a change since 1965 in the proportion of U.S. adults that have never smoked cigarettes. You suspect that the proportion has grown since 1965. Which of the following are the appropriate hypotheses?A. H0: p = 0.44, Ha: p > 0.44B. H0: p = 0.51, Ha: p In 1965, about 44% of the U.S. adult population ha 0.51C. H0: p = 0.44, Ha: p In 1965, about 44% of the U.S. adult population ha 0.44D. H0: In 1965, about 44% of the U.S. adult population ha = 0.44, Ha: In 1965, about 44% of the U.S. adult population haIn 1965, about 44% of the U.S. adult population ha 0.44

Answers

Answer:

H0: p = 0.44, Ha: p ≠ 0.44

Step-by-step explanation:

The following information is mentioned

44% of the US adult population would never smoked cigarettes so that means the proportion would be

= 44 ÷ 100

= 0.44

Now we have to check the test whether this change represent increase or decrease

So the hypothesis is

[tex]H_o: P=0.44[/tex]

[tex]H_1: P \neq 0.44[/tex]

The two tailed means

[tex]P < 0.44 \, \, or \, \, P> 0.44 )[/tex]

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