What are the solutions to the following equation? x^2+8x+15=0

Answers

Answer 1

Answer: It can be either one.

x=−3

or

x=−5


Related Questions

1) f(x) = 5x^4+ 49x^2+ 36

Answers

Answer:

That's the simplest I could do, sorry

Will mark as brainliest ❤️

Answers

Answer:

is just a "place-holder" or "variable.

If

f

x

=

x

+

7

then (using a different variable)

f

(

t

)

=

t

+

5

or

using a constant

f

(

x

)

=

5

+

7

Since

5

+

7

=

12

for the given example

f

(

5

)

=

12

A baseball is hit from an initial height of 3 feet and reaches a maximum height of 403 feet. Which function could be used to model this situation, where h(t) is the height, in feet, after t seconds?

A. h(t) = -16(t - 403)^2 + 3
B. h(t) = -16(t - 5)^2 + 3
C. h(t) = -16(t - 3)^2 + 403
D. h(t) = -16(t - 5)^2 + 403

Answers

Answer:

I believe its A

Step-by-step explanation:

D. h(t) = -16(t - 5)² + 403 could be used to model this situation.

What are the given informations ?

A baseball is hit from an initial height of 3 feet.

The baseball reaches a maximum height of 403 feet.

Here, h(t) indicates the height in feet after t seconds.

Which function is correct ?

At the start, t = 0 & Initial height = 3 feet ,i.e. h(0) = 3

We have to verify options by putting t = 0

A.  h(t) = -16(t - 403)² + 3

So, h(0) = -16(0-403)² + 3 = -16(-403)² +3 = -2598544+3 = -2598541

B.  h(t) = -16(t - 5)² + 3

So, h(0) = -16(0-5)² + 3 = -16(-5)² + 3 = -400+3 = -397

C.  h(t) = -16(t - 3)² + 403

So, h(0) = -16(0-3)² + 403 = -16(-3)² + 403 = -144 + 403 = -259

D.  h(t) = -16(t - 5)² + 403

So, h(0) = -16(0-5)² + 403 = -16(-5)² + 403 = -400 + 403 = 3

Hence, in this function h(0) = 3 verified.

Therefore h(t) = -16(t - 5)² + 403 is the required function.

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Solve for X and Y using substitution.
1)
12x +y = 36
x+4y=24

Answers

{x,y}={24,12} I think that is the answer to this question....

A shadow 16 meters long is cast by a utility pole that is 12 meters tall. What is the length of
the shadow cast by a nearby apple tree that that is 6 meters tall?
Write your answer as a whole number or a decimal. Do not round.

Answers

Answer:

10

Step-by-step explanation:

The length of the hypotenuse, line segment AC, in right
triangle ABC is 25 cm. The length of line segment BC is
15 cm.

Answers

What is the question? The Hypotenuse? If so there is still not enough evidence.

if the question is asking for the length of AB :
since the triangle is a right angled one, we can apply the Pythagoras’ Theorem.

AC^2 = BC^2 + AB^2
25^2 = 15^2 + AB^2
625 = 225 + AB^2
AB^2 = 400
AB = 20cm

The length of line AB is 20cm.

9 ft=_____ in Do y'all know the answer to this plz help me out plz and thanks

Answers

Answer:

108

Step-by-step explanation:

As 1 foot = 12 inches, 9 foot = 12*9 = 108.

Hope this helps! :)

Answer:

The answer is 108. 1 foot equals 12 inches. So, you just need to multiply 9 by 12. 9 x 12 = 108.

Evaluate: 2x + 5x - 11 = -46

Answers

Answer:

x=-5

Step-by-step explanation:

Combine like terms: 7x-11=-46

Add 11 to -46: -35

Divide: 7x/-35

ANSWER: x=-5

Jim earns 3% commission every month on his total sales. This month, his total sales were $620,000. How much commission did Jim earn?
Group of answer choices

A-$18,600

B-$20,600

C-$206,000

D-$186,000

Answers

answer is A. $18,600 because $620,000 × 3% = $18,600

pretty sure its A.

Brainliest?... thx

Graph h(x)=8 I x+1 I -1.

Answers

Answer:

search it up its there

Step-by-step explanation:

I NEED HELP ASAP THANKSSS

factor x^2 +9x+20

Answers

Answer:

(x + 5)(x + 4)

Step-by-step explanation:

[tex]x^{2} +9x+20=(x+5)(x+4)[/tex]

Answer:

Step-by-step explanation:

x^2+9x+20

(x+4)(x+5)

Help? How do I do this.

Answers

z:60 y:36 x:48. I just look at the lengths and assign the values to the logical placement due to size.

If a/b= 8 and ac -5 = 11, then bc =?

Answers

Answer:

bc = 2

Step-by-step explanation:

From [tex]a/b = 8[/tex]

[tex]a=8b[/tex] (times b on both sides)

We can then substitute [tex]a[/tex] for [tex]8b[/tex]:

[tex]ac-5=11[/tex] (given equation)

[tex]8bc-5=11[/tex]

[tex]8bc=16[/tex]

[tex]bc=2[/tex]

I hope this helps :)

find the slope from the graph (help please)

Answers

For the slope I got 0

How many hours are in 40% of a week?

Answers

Answer:

67.2 hours

Step-by-step explanation:

Answer:

Step-by-step explanation:

67.2 hours are in 40% of a week.

evaluate the expression 2b3 + 5 when b = 3.

Answers

Answer:

Its 3

Step-by-step explanation:

Its Really easy ngl. if b = 3        and there is a 2 and u are supposed to replace the b its 3

An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.

The value of 2b³ + 5 at b = 3 is 59.

What is an expression?

An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.

Example: 2 + 3x + 4y = 7 is an expression.

We have,

2b³ + 5  _____(1)

We will find the value of the expression 2b³ + 5 at b = 3.

Substitute b =3 in (1).

= 2b³ + 5

= 2 x 3³ + 5

= 2 x 3 x 3 x 3 + 5

= 2 x 27 + 5

= 54 + 5

= 59

Thus,

The value of 2b³ + 5 at b = 3 is 59.

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Please help me out!​

Answers

Answer:

50

Step-by-step explanation:

0.2 is the correct answer

7. The graph of the linear function is shown on the coordinate grid below.

Answers

Answer:  C . The slope is -4/3  and the y-intercept is 4.

Step-by-step explanation:

Using the two given points, we will use them to evaluate the slope and the y intercept.  

(-1.5,6)

( 4.5,-2)  

To find the slope we will find the difference in the y coordinates of the points and divide it by the difference in the x coordinates of the point.

6-(-2) = 8  

-1.5 - 4.5 = -6

Slope :  8/-6=  -4/3.

Since the slope is -4/3, we will use the formula  y= mx + b to find the y intercept. In the formula  y= mx + b, the slope is m and b is the y intercept.  

Use one of the given points, and input its x and y values into the formula including the slope to solve for b(the y-intercept).

We will use the point,  ( -1.5,6)  

6 = -4/3(-1.5) + b

6 = 2 + b  

-2   -2

b = 4.

b is indeed equal to 4 because it even indicates on the  graph that the y intercept is 4 which is where x is equal to 0.

Determine if this quadrilateral is a parallelogram. Justify your answer.

Answers

Answer:no

Step-by-step explanation:

the properties for a parallelograms are

opposite angles are equalopposite sides are equaldiagonals bisect each othersum of any two adjacent angles is 180

we can conclude that the quadrilateral is not a parallelogram because it only has one pair of opposite sides that are equal. (the dashes through the sides show they are congruent to each other)

Then choose whether you would find the percent increase or percent decrease: A town’s population was 36,067 in 2005. Ten years later, the population is 37,902.

Answers

Answer:

Increase

Step-by-step explanation:

1,835 more people came

the length of a rectangle is 5 more than twice the width. if the perimeter of the rectangle is 76 meters, find the dimensions of the rectangle and choose the equation that represents the perimeter:

1. 76=2w+5
2. 76=2w+2(2w+5)
3. 76=w+2w+5
4. 76=2w+(2w+5)

Answers

Answer:

Dimensions: 11 meters by 27 meters

2. [tex]76=2w+2(2w+5)[/tex]

Step-by-step explanation:

Finding Dimensions:

The perimeter of a rectangle can be written as [tex]2l+2w[/tex] where [tex]l[/tex] is the length and [tex]w[/tex] is the width. It is given that the length is 5 more than twice the length of width and the perimeter of the rectangle is 76 meters.

With this information we can write:

Length = [tex]2w+5[/tex]

[tex]2(2w+5)+2w = 76[/tex] (perimeter of the rectangle)

[tex]4w+10+2w=76[/tex]

[tex]6w=66[/tex]

[tex]w=11[/tex]

Length = [tex]2(11)+5[/tex]

Length = [tex]27[/tex]

∴ The dimensions of the rectangle is 11 meters by 27 meters.

Perimeter

Since the length can be written as [tex]2w+5[/tex], the equation that represents the perimeter of the rectangle is [tex]76=2w+2(2w+5)[/tex]

i accedentaly wrote this

Answers

Answer:

uh

Step-by-step explanation:

Distance = 30 m, Time = 6 minutes, Speed = ?


Helpppp

Answers

Answer:

its 5 m/minute

Step-by-step explanation:

you have to use the units that are given in the equation

pls mark brainliest if you geel like it...

Answer:

5 minutes

Step-by-step explanation:

6 min x 5 min = 30

i just multiply

Which values from the given replacement set make up the solution set of the inequality? 2b≥6;

A) { 3, 4}

B) {2, 3, 4}

C) {1, 2, }

D) {1, 2, 3}

Answers

The answer is A because the variable can’t be no lower than 3 and every other answer has 2 in it. 2•(3) is equal to 6 and 2•(4) is greater than 6 which correlates with the sign (greater than or equal to).

4 A bricklayer lays 1500 bricks in an 8-hour day. Assuming he continues to
work at the same rate, calculate:
a how many bricks he would expect to lay in a five-day week
b how long to the nearest hour it would take him to lay 10000 bricks.

Answers

Answer:

answer of a is 7500and the answer of b is53 hours

A -7500 B-53hours
Explanation:

this is for pre-calc can someone pls help

Answers

Answer:

Question 18: 453,600

Step-by-step explanation:

A holiday costs £1900. Work out the
price after a 9% discount.

Answers

Answer:

$1729

Step-by-step explanation:

[tex]\frac{100-9}{100} * 1900[/tex]

Answer:

1729

Step-by-step explanation:

1900 divided by 100 is 19

1% equals 19

1 times 9 equals 9

19 times 9 equals 171

171 = 9%

171 - 1900 = 1729

price after a 9% discount is 1729

PLEASE HELP:URGENT
Ms Tyler has a rectangular patio that she would like to decorate with string lights as shown in the diagram. If she plans to string the lights around the perimeter and across both diagonals how many feet of lights will she need? (READ CAREFULLY)
A: 47 feet
B: 60 feet
C: 80 feet
D: 13 feet

Answers

The answer is C: 80 feet

Answer:

the answer is b

Step-by-step explanation:

the answer would be b because you add 12+12 then 5+5 and if you add those together it would be 34 then you would add the diagonal lines together which would be 20 so then you would add 34 plus 26 and then you would get 60 which is b

IF I'M WRONG I APOLOGIZE BUT I'M ALMOST 100% SURE THAT'S THE ANSWER

Who wants to be my gamergirl

Answers

Answer:

Well I'm not a girl soo No.

Step-by-step explanation:

Jackie has a maximum of $450 to spend on shirts and jeans. The shirts she wants to buy are $12 each, including tax. The jeans she wants to buy are $27 each, including tax. What is an inequality that represents all possible combinations of s, the number of shirts, and j, pairs of jeans, Jackie can buy

Answers

Answer: 12s+27j≤450

Step-by-step explanation:

From the question, we are informed that Jackie has a maximum of $450 to spend on shirts and jeans and that the shirts she wants to buy are $12 each, including tax while the jeans she wants to buy are $27 each, including tax.

The inequality that represents all possible combinations of s, the number of shirts, and j, pairs of jeans, Jackie can buy will be:

= 12s+27j≤450

Other Questions
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