Can someone help me please ill give brainy

Answer:

its B on edg2020

brainlest please

The correct substitution for the formula is a = 3,b= -2 and c=0.

It is a polynomial with a degree of 2 or the maximum power of the variable is 2 in quadratic equations. It has two solutions as its maximum power is 2.

The given quadratic equation is,

1 = –2x + 3x² + 1

3x²-2x + 0 = 0

The formula is,

[tex]x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}[/tex]

The standard form of the quadratic equation is,

ax² + bx + c = 0

Compare the equation with the standard equation.

a = 3

b = -2

c = 0

Therefore, the correct substitution for the formula is a = 3,b= -2 and c=0.

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Answer:

The ladder has 39.6 feet

Step-by-step explanation:

Length Units Conversion

To convert from meters to feet we use the relation

1 m = 3.3 ft

The ladder that Nicholas needs to repair the roof of his grandmother's hours is 12 meter long.  

Converting this length to feet we have

12 * 3.3 = 39.6 ft

The ladder has 39.6 feet

Answer: 132

Step-by-step explanation: For day A the students payed 40 dollars  and on  day B they paid 92 so 40+92=$132 in all.

Answer:

100°

Step-by-step explanation:

55°+25°+third angle=180°(by angle sum property)

80°+third angle=180°

third angle=180°-80°

third angle=100°

Answer:

The measure of the third angle of the triangle would be 100°.

Step-by-step explanation:

25 + 55 + x = 180

80 + x = 180

x = 180 - 80

x = 100

Step-by-step explanation:

[tex]nth \: term \: = a1 \times {r}^{n - 1} \\ = 9 \times {3}^{9 - 1} \\ = 9 \times 6561 \\ = 59 \: 049[/tex]

Answer:

x = 10, y = 7.5

Step-by-step explanation:

Given the triangles are similar then the ratios of corresponding sides are equal, that is

[tex]\frac{AE}{AC}[/tex] = [tex]\frac{DE}{BC}[/tex], substitute values

[tex]\frac{x}{4}[/tex] = [tex]\frac{12.5}{5}[/tex] ( cross- multiply )

5x = 50 ( divide both sides by 5 )

x = 10

and

[tex]\frac{AD}{AB}[/tex] = [tex]\frac{DE}{BC}[/tex] , that is

[tex]\frac{y}{3}[/tex] = [tex]\frac{12.5}{5}[/tex] ( cross- multiply )

5y = 37.5 ( divide both sides by 5 )

y = 7.5

Answer:

72.66 calories

Step-by-step explanation:

1. find 1g of bannana = calories

86÷100g = 0.86 calories

1g of bannana = 0.86 calories

2 find 1g of yougurt = calories

89÷100g = 0.89 calories

1g of yougurt = 0.89 calories

3. 70g of bannana= 70×0.86

= 60.2 calories

4. 14g yogurt= 14×0.89

= 12.46 calories

5. 60.2 calories +12.46 calories = 72.66 calories

Answer:

700

Step-by-step explanation:

Answer 60 ml oil 90 g onions 1200 g potatoes 1350 ml milk

Step-by-step explanation:

multiply by 3

Answer:

60 ml oil

90g onions

1200 g potatos

1350ml milk

Step-by-step explanation:

Answer:

5.76

Step-by-step explanation:

i just added them  

Answer:

y = ⅗x

Step-by-step explanation:

The line passes through the point of origin, (0, 0). This implies that the graph represents a proportional relationship between x and y. Thus, in slope-intercept form, the line of a proportional graph can be represented as y = mx.

Where,

m = slope/constant of proportionality = y/x

To write an equation for the line, let's find the slope using any of the points on the line.

Using (50, 30):

Slope (m) = 30/50 = ⅗

Plug in the value of m into y = mx

Thus, equation of the line would be:

y = ⅗x

Answer:

☆The length of the missing side is 5.

.

Step-by-step explanation:

☆Remember, Pythagorean theorem!

It looks like: [tex] {a}^{2} + {b}^{2} = {c}^{2} [/tex]

.

☆All we need to do is plug in!

[tex] {a}^{2} + {b}^{2} = {c}^{2} \\ {a}^{2} + {12}^{2} = {13}^{2} \\ {a}^{2} + 144 = 169 \\ \frac{\: \: \: \: \: \: \: \: - 144 = - 144}{ {a}^{2} = \sqrt{25} } \\ a = 5[/tex]

☆Therefore the value of A is 5.

Answer:

15 meters

Step-by-step explanation:

Answer:

D

Step-by-step explanation:

i did it

Answer:

It is D

Step-by-step explanation:

The way to find the perimeter is to add the side lengths and then simplify by combining like terms.

Step-by-step explanation:

the first one is 4 and the second one is 11.6

Step-by-step explanation:

16×7=28×n

or,16×7/28=n

or,112/28=n

or,n= 4

Again

39×5=n×15

or,39×5/15=n

or,195/15=n

or,n=13

Answer:

A. 4/5

Step-by-step explanation:

The red dot is on 0.8

0.8 as a fraction is 4/5

Answer:

Step-by-step explanation:

Given rectangle JKLM

JN = 1/2JL as diagonals bisect each other and N is the midpoint of JL.

Substitute and solve for x:

Find JN

Looking at the options, we see that

Correct option is A

Answer:

NM=8 I tried it and got it right

Step-by-step explanation:

Answer: 8 meters and 90 centimeters

Step-by-step explanation:

there are 100 centimeters in a meter

Answer: Add 5 to both sides

What is the first step needed to solve 4 over 7 the whole multiplied by x minus 5 equal negative 13?

Answer- Add 5 to both sides

(4/7)x - 5 = -13

• As mentioned above, first step would be,

adding 5 to both sides

=> (4/7)x - 5 + 5 = -13 + 5

=> (4/7)x = -8

• Now, transporting 7 from L.H.S. to R.H.S

=> 4x = -8 × 7

=> 4x = -56

• Now in the same way, transporting 4 from L.H.S. to R.H.S

=> x = (-56/4)

=> x = -14

• And in this way, or taking (Add 5 to both sides) as our first step, we find that the value of x is -14.

∴ x = -14

Hope it helps.

Answer:

25%

Step-by-step explanation:

He has already done 27/36

so he has 9/ 36 left

that is is equal to 1/4

1/4 as a percentage is 25%

A. 2x+30=90

Step-by-step explanation:

To find x they must add to 90 degrees

Answer:

SSS similarity.

Step-by-step explanation:

AA, SAS, and SSA similarities means the triangle must have an angle, which it doesn't, so by process of elimination it is SSS similarity.

By AA similarity criteria, the triangle AOB is similar to the triangle COD. Therefore, option A is the correct answer.

In the given figure, two lines AB and CD are parallel.

Two triangles are similar if the angles are the same size or the corresponding sides are in the same ratio. Either of these conditions will prove two triangles are similar.

Consider, the triangle AOB and the triangle COD.

Here, AB║CD

∠BAO=∠CDO (Alternate interior angles)

∠ABO=∠DCO (Alternate interior angles)

By AA similarity criteria ΔAOB≈ΔCOD

By AA similarity criteria, the triangle AOB is similar to the triangle COD. Therefore, option A is the correct answer.

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Answer:

there would have been 12 crackers on the plate at the start

Step-by-step explanation:

So 1/3 +1/4 = 7/12

Therefore 5/12 left on the plate …ie 5.

So total to start with

5/5×12=12

Ans 12

Answer:

x = 14.375

Step-by-step explanation:

Ok, so we know that a triangle has a total interior degree of 180°. And since we already have a 95° angle, we just need to subtract 95 from 180.

180° - 95° = 85°

Now, we already have indicators that two of the three sides are equal. And we already got the angle of the side that does not have a matching partner. So we just need to divide what we already have by 2.

85° / 2 = 42.5°

Now that we know each side is 42.5 degrees, we just need to grab our given equation and put and equal sign at the end with what we already know is the answer (since we are trying to solve for x).

(4x - 15) = 42.5

Now, let's just get rid of those useless parentheses.

4x - 15 = 42.5

Next, we just need to have the variable on its own side, all by itself. So, in order to do that, we just add 15 to both sides.

4x = 57.5

Now, for our final step, we just need to divide each side by our variables' factor (which is a positive 4). In which we get our final answer of:

x = 14.375

Answer:

x = 14.375

Step-by-step explanation:

Since 2 sides are congruent then the triangle is isosceles and the base angles are congruent, both (4x - 15)

The sum of the 3 angles in the triangle = 180°

sum the angles and equate to 180

4x - 15 + 4x - 15 + 95 = 180 , that is

8x + 65 = 180 ( subtract 65 from both sides )

8x = 115 ( divide both sides by 8 )

x = 14.375

Answer:

432

Explanation:

If the lumberjack follows Jim's instruction and cuts the log of wood into 24 parts the first time, the log of wood has 24 parts

If the lumberjack follows John's instruction to further cut the log of wood already cut into 24 parts then we would have 24×18= 432 parts of the log of wood

Answer:

d. 2

Step-by-step explanation:

a mode is the most frequently appeared value in a set of data. in other words, the most repeated number in a set of x, y, z.

example:

2, 3, 8, 7, 8, 7, 8

number of times 2 appeared: 1

number of times 3 appeared: 1

number of times 7 appeared: 2

number of times 8 appeared: 3

the mode here would be 8, since it is the most repeated number.

I hope this helped.

Answer:

$23.56

Step-by-step explanation:

Step one:

given data

We are told that the unit cost per pound is $5.89

Required

the cost of 4 pounds

If 1 pound cost $5.89

4 pounds  cost x

cross multiply

x= 4*5.89

x=$23.56

Answer:

14.68

Step-by-step explanation:

it simple 23.42 minus 8.74

Answer:

The circumference is 22.61

C=2πr

C=2π(3.6)

C=7.2 π

C=22.608

Step-by-step explanation: