what are the roots of the equation -3x + 19 = -x^2+1​

Answers

Answer 1

Answer:

(3 ± 3√7i)/2

Step-by-step explanation:

-3x + 19 = -x^2+1​x^2 - 3x + 19 - 1 = 0x^2 - 3x + 18 = 0x = (3 ± √9 - 72)/2 x = (3 ± √-63)/2x = (3 ± 3√7i)/2

It has no real solutions and two complex roots


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Answers

Answerlol

Step-by-step explanation:

Given D'E'F'G' is a dilation of DEFG, find the scale factor of dilation.

Answers

Answer:

7.5

Step-by-step explanation:

157.5/21 = 7.5

What is the length of a hypotenuse when the legs are 72 and 65?​

Answers

Answer:

97

Step-by-step explanation:

you square 72 and 65 and add them together then take the square root of your answer aka 97 and thats the hypotenuse

Math graphing and solution ​

Answers

Step-by-step explanation:

what do you mean bro???????

whatttt you sayyyyyyy

a=5 and c=13 what is the value of b?​

Answers

Answer: 8 is the answer

Step-by-step explanation:

Answer:

13.928

Step-by-step explanation:

Help please thank you !

Answers

Answer:

3

Step-by-step explanation:

2/36=x/54

Cross multiply and find x

Answer:

it is 3 cups!

Step-by-step explanation:

36+18=54

2 cups were used for 36, 3 cups were used for 54 :)

How much would your total be if you bought 2 lbs of ground
beef and 1 lb of steak?
Beef:$5.99$ per lb
Steak:$9.99 per lb

Answers

Answer:

$21.97

Step-by-step explanation:

2(5.99)+ 1(9.99) = 11.98 + 9.99 = 21.97

It would be 12$ because plus tax would be 6$ and 6+6 is 12

9 = -5b - 23
What is b?

Answers

Answer:

9=-5b-23 +23

32=-5b ÷(-5)

-6.4=b

Step-by-step explanation:

prove me wrong

b is equal to -6.4!!!

Which point is at 44.197 on the number line?

Answers

Answer:

C

Step-by-step explanation:

because C

___________: next to or adjoining to something else.​

Answers

Hey there!

The correct answer is adjacent.

The exact definition in the Oxford dictionary is "next to or adjoining something else."

Hope it helps and have a great day!

P.S. A picture of adjacent angles is below, you can see they are adjacent because they are connected.

Robin had 7/8 pound of butter when she started baking a cake. She used 1/4 pound of butter while baking. How much butter was left after she was done baking?

Answers

Answer:

[tex]\dfrac{5}{8}[/tex] butter was left after she was done baking.

Step-by-step explanation:

Robin had 7/8 pound of butter when she started baking a cake. She used 1/4 pound of butter while baking.

We need to find how much butter was left after she was done baking.

It can be calculated as follows,

Left =

[tex]=\dfrac{7}{8}-\dfrac{1}{4}\\\\=\dfrac{7}{8}-\dfrac{2}{8}\\\\=\dfrac{7-2}{8}\\\\=\dfrac{5}{8}[/tex]

Hence, [tex]\dfrac{5}{8}[/tex] butter was left after she was done baking

-0.8b^2+7.4b+(5.6b-0.2b^2)

Answers

Answer:

what? I don't understand lol

Which value of x makes the equation true?
3.1 – 6
3
71 - 3
6
A.
-11
B.
-9
C.
-3
D. 3

Answers

Answer:

B. -9

Step-by-step explanation:

PLATO correct

In one week, a printing center made 1,232 copies of a 26 page article. The printing center also printed 639 copies of a 14 page essay. How many pages did the printing center print during the week?

Answers

Answer: they printed 40,978 pages in a week

HELPPP PLS I DON’T UNDERSTAND

Answers

Answer:

a.

[tex]h=\dfrac{2A}{b}[/tex]

b.

A = 220 mm²

b = 20 mm

[tex]h=\dfrac{2 \cdot 220}{20}=22 \: {mm}[/tex]

Answer:

A=1/2bh

2*A=1/2bh*2

2A/b=bh/b

h=2A/b

b)h=2(220)/20

height=22mm

Step-by-step explanation:

find the value of x.

Answers

Answer:

2

Step-by-step explanation:

Since they are similar triangles then the ratio will be the same on all sides.

You know the one side 5 is the same ratio to 5x   so you multiply x to all sides of the little triangle to get the value of the equivalent side in the big one.

so the missing side x times x will equal the big size of the bigger triangle which is 4

x times x = 4   can only be 2

5. A cube has width of 8 cm. What is the volume of the cube?
Anyone got an answer?

Answers

Answer:

8×8×8 =512

Step-by-step explanation:

prove me wrong

Answer:

512 cm

Step-by-step explanation:

the formula to find volume is length × width + height (L×W×H) and since it is a cube all of the sides are equal so simply multiple 8 × 8 × 8 to get 512

What does the Pythagorean theorem state?

Answers

Answer:

Step-by-step explanation:

Pythagorean theorem state that

Hypotenuse² = altitude² + base²

Answer :

Pythagoras theorem states that square of hypotenuse of a right angled triangle is equal to the sum of squares of base and altitude of that triangle.

Hypotenuse² = Base² + Altitude ²

Evaluate the given expression if x = 25, y = 10, w = 11, and z = 18.
(x - y)2 + 10wz
1995
b. 3205
C.-1755
a.
d. 2205

Answers

first we must replace each variable with their given number.
(25-10)2+10(11)(18)

then we use PEMDAS to simplify.

(30)+ 1980

30+1980 is 2010

2010 is the correct answer, not sure why it is not an option

Below are two parallel lines with a third line intersecting them.

Answers

Answer:

x = 77

Step-by-step explanation:

no hablo ingles lo siento

Need Help!!!!!!!!!!!!!!

Answers

Answer:

Option a. id have other relations for them, but they are not listed, so their ya go.

Step-by-step explanation:

Answer:

You add 5 to get from x to y

Step-by-step explanation:

10+5 =15

13+5 = 18

16+5 = 21

Can someone help me ASAP !

Which fraction and decimal forms match the long division problem?
15) 7.000
6 0
1 00
90
100
90
10

Answers

Answer:

It has to be either A or B. Im sorry Im not completely sure which one it is. I believe it is B. im sorry of im incorrect.

Answer: c

Step-by-step explanation:

27= 3 (3х - 6)


Help please

Answers

the answer for this equation would be x=5

Answer:

x = 5

Step-by-step explanation:

27= 3 (3х - 6)

27 = 9x - 18

27 + 18 = 9x

45 = 9x

45/9 = x

5 = x

x = 5

The diagram shows an isosceles right
triangle. Follow these steps to explore the
relationship between side lengths.
m2 ABC = 45°
MZ ACB = 45°
1. Measure the length of each leg and
the hypotenuse:
AB =
units
AC =
units
BC =
units
B
C
A
III
IIIIIIIIIIIIIIIII

Answers

Answer:1. 1.0 1.0 1.4

Step-by-step explanation:

The  length of the sides are given by the 45°45°90° triangle theorem.

Correct responses:

AB = 1AC = 1BC = √2

Methods used to find the lengths

The 45°–45°–90° triangle theorem states that the ratio of the lengths of

the sides of triangles having interior angles of 45°, 45°, 90° is 1 : 1 : √2

The lengths of the legs of an isosceles triangle are equal.

The legs of the given isosceles right triangle are AB and AC

Therefore;

AB = AC

Taking the lengths of AB as 1 unit, we have;

AB = 1 = AC

According to Pythagorean theorem, we have;

[tex]\overline{BC}^2 = \mathbf{\overline{AB}^2 + \overline{AC}^2}[/tex]

Which gives;

[tex]\overline{BC}^2 = 1^2 + 1^2 = \mathbf{ 2}[/tex]

Therefore;

BC = √2

Therefore, by setting the length of AB = AC = 1, we have;

AB = 1AC = 1BC = √2 ≈ 1.414

The above values are in the ratio 1 : 1 : √2, which corresponds with the

45°-45°-90° triangle theorem.

Learn more about Pythagorean theorem here:

https://brainly.com/question/66231

HELP PLEASE! Write a quadratic function that passes through the point (-1,9), has an axis of symmetry of x=-3 and a minimum value of 7.

Answers

Answer:

[tex]y = \frac{1}{2}x^{2} - 3x + 11.5[/tex]

Step-by-step explanation:

Vertex Form of a quadratic equation;

[tex]y = a( x - h )^{2} + k[/tex]

Vertex of the parabolas (h, k)

The vertex of the parabola is either the minimum or maximum of the parabola. The axis of symmetry goes through the x-coordinate of the vertex, hence h = -3. The minimum of the parabola is the y-coordinate of the vertex, so k= 7. Now substitute it into the formula;

[tex]y = a ( x + 3 ) ^{2} + 7[/tex]

Now substitute in the given point; ( -1, 9) and solve for a;

[tex]9 = a( (-1 ) + 3)^2 + 7\\9 = a (2)^{2} + 7\\9 = 4a + 7\\-7 -7\\2 = 4a\\\frac{1}{2} = a\\[/tex]

Hence the equation in vertex form is;

[tex]y = \frac{1}{2}(x - 3)^{2} + 7[/tex]

In standard form it is;

[tex]y = \frac{1}{2}x^{2} - 3x + 11.5[/tex]

HELP I NEED HELP ASAP ILL GIVE U BRAINILEST!

Answers

(a).

36 players = 100%

? = 10%

(36×10) / 100%

= 3.6 gloves for left hand players.

Explanation :- Object needs to be in full form whereas 3.6 would be written as only 3 gloves in full.

Ans: Yes. Total gloves were enough.

(b).

36player gloves = 100%

7 lefties = ?

=700/36 = 19.4%

=19.4444444 as recurring would be,

19 % (nearest to whole percent) DONE ✅.

Which statements are true?

Select each correct answer.


Since −6 is 6 units to the left of 0, |−6|=6 .

The absolute value of −6 is negative.

The absolute value of −6 is less than the absolute value of 6.

​ −6 ​ is closer to zero on the number line than ​ −7 ​ , so |−6|<|−7| .

Answers

Answer:

The first one and the last one are true (Since −6 is 6 units to the left of 0, |−6|=6 and −6 is closer to zero on the number line than −7, so |−6|<|−7|.)

Step-by-step explanation:

Absolute value is the distance to zero, and it is always positive. That means the positive and negative versions of a number have the same absolute value. That means the first one is true, and the second and third ones are false. For the last one, -6 is closer to zero, so that means it would be true (The absolute value of -6 is 6, and the absolute value of -7 is 7).

A new bridge has a weight limit of 3 tons, tiene car weighs 7,900 lbs. Will the besble to drive her
care across the bridge, explain why or why not

Answers

Answer:

no

Step-by-step explanation:

3 tons is 3,000 and 7,000 is 7 tons

What is the slope of the line graphed above?

Answers

Answer:

m=3, or in y-intercept form, y=3x-3

Someone help plz I need some help help... plz... I? Help

Answers

Answer:

12

Step-by-step explanation:

h(n)=3n

h(4)

1. Subsitute 4 for n

h(4)=3*4

h(4)=12

Answer:

12

Step-by-step explanation:

h(4)=3n

h(4)=3(4)

h(4)=12

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