Help me out please an thank you

Answer:

[tex]\huge\boxed{\sf Discriminant = -4}[/tex]

Step-by-step explanation:

Comparing it with quadratic equation [tex]ax^2 + bx + c = 0[/tex], we get:

a = 1 . b = 4 and c = 5

So,

Discriminant = [tex]b^2-4ac[/tex]

D = (4)²-4(1)(5)

D = 16 - 20

D = -4

Hence,

Discriminant = -4

[tex]\rule[225]{225}{2}[/tex]

Hope this helped!

Step-by-step explanation:

5466 that's it it's that easy

9514 1404 393

Answer:

  x = -6 (correct answer)

  mistakes were made in Step 2 and Step 5.

Step-by-step explanation:

The mistake is made in Step 2, application of the distributive property. This is often a source of error. Here, the error is in signs.

Step 1: 12 = -2(x -4) -8

Step 2: 12 = -2x +8 -8 . . . . . . the correct step 2

Step 3: 12 = -2x . . . . . . . . . . . like terms combined

Step 4: -6 = x . . . . . . . . . . . . . divide by -2

__

Check

  12 = -2(-6 -4) -8 = -2(-10) -8 = 20 -8 = 12 . . . . answer checks OK

__

Comment on other mistake

In the original Step 5, -2 was divided on the right and added on the left. This is a violation of the properties of equality, so guarantees a wrong answer. The same operation must be performed on both sides of the equation.

An additional mistake was made in that the answer was not checked.

Answer:

The Bus Left At 4:30 P.M

Step-by-step explanation:

4:30+30=5:00

Hope this helps!

Answer:4:30

Step-by-step explanation:5:00-30 minutes =4:30

Answer:

The exponential equation is;

y = 0.1•0.5^x

Step-by-step explanation:

Here, we want to get the exponential function represented by the table

Mathematically, the general form of an exponential function is;

y = a•b^x

By getting a and b, we have the exponential function

We can use any of the points;

Let us start with (0,0.1)

0.1 = a•b^0

anything raised to zero is 1

0.1 = a * 1

a = 0.1

Now, we have a

Let us work with the second point to get b

The point is (1,0.05)

0.05 = 0.1•b^1

0.05 = 0.1b

b = 0.05/0.1

b = 0.5

Thus, we have the equation as;

y = 0.1•0.5^x

Answer:

angle A=63°[by alternate exterior angle]

Answer:

I’m doing the assignment and in the reading it says In this lesson, you’ll be exploring how changes in the dimensions of a figure affect its area. so I say. False

hope this helps

Step-by-step explanation:

The statement is false because the area could be changed if the dimensions are changed.

Supposing that there is no direct formula available for deriving the area,

we can derive the area of that region by dividing it into smaller pieces, whose area can be known directly.

Then summing all those pieces' area gives us the area of the main big region.

The statement is given that 'Changes in the dimensions of the shape do not affect the area of the shape'.

The statement is false because the area could be changed if the dimensions are changed.

Learn more about area here:

https://brainly.com/question/13004063

#SPJ2

Answer:

3,6 I think is the range.

Answer:

wouldnt it be two

Step-by-step explanation:

if ms.young is make a (1) fruit basket and sends her cousin to put 2 green apples in each basket that would be 2 apples

The total number of apples that miss Young sends her cousins is 56 apples.

In mathematics, an equation is a formula that expresses the equality of two expressions, by connecting them with the equals sign =.

Here,

If number of green apples are g, then red apples will be 3g

Let the total number of apples be x.

Miss Young is making fruit baskets to send her seven cousins

Now, x= 7(g+3g)

She puts two green apples in each basket

So, x=7(2+3×2)

= 7×8

= 56

Therefore, the total number of apples that miss Young sends her cousins is 56 apples.

To learn more about an equation visit:

https://brainly.com/question/14686792.

#SPJ2

"Your question is incomplete, probably the complete question/missing part is:"

Miss Young is making fruit baskets to send her seven cousins. In each basket, she puts G green apples. She puts red apples, which is three times as many green apples in each basket. What is the total number of apples that miss Young sends her cousins if she puts two green apples in each basket?

Answer:

A intersection B complement

Answer:

MADE IT I WORKED HARD SO MAYBE BRAINLIEST CAN HELP

Please mark as brainliest

Have a great day, be safe and healthy

Thank u  

XD

Answer:

5x + 8 = 18

5x = 18 - 8

5x = 10 (divide both sides by 5 to get x)

5x/5 = 10/5

x = 2

Step-by-step explanation:

also can i get brainliest

Answer:

12.5 in squared 3

Step-by-step explanation:

Answer:

12.5!

Step-by-step explanation:

Answer:

Box C

Step-by-step explanation:

Given

See attachment 1 for the maze

Required

The area to place the food in order to help the rat win

To answer this question, we make use of the concept of probability (see attachment 2)

From the starting point to the first joint:

Each of the three ways have the same probability of 1/3

1. If the car passes the way at the top, there are two additional joints.

1.1 Each of the two joints (top and bottom) have the same probability of 1/6 (i.e. divide 1/3 by 2)

1.2 The bottom joint also splits to two (each of these ways have a probability of 1/12; i.e. divide 1.6 by 2)

2. If the car passes the way at the middle, there are two additional joints.

Each of the two joints (top and bottom) have the same probability of 1/6 (i.e. divide 1/3 by 2)

3. If the car passes the way at the bottom, there are three additional joints.

Each of the three joints have the same probability of 1/9 (i.e. divide 1/3 by 9)

Next, is to sum up the probability of each box.

For Box A

[tex]P(A) = \frac{1}{6} + \frac{1}{12} + \frac{1}{9}[/tex]

Take LCM

[tex]P(A) = \frac{6+3+4}{36}[/tex]

[tex]P(A) = \frac{13}{36}[/tex]

[tex]P(A) = 0.361[/tex]

For Box B

[tex]P(B)= \frac{1}{12} + \frac{1}{6}[/tex]

Take LCM

[tex]P(B)= \frac{1+2}{12}[/tex]

[tex]P(B)= \frac{3}{12}[/tex]

[tex]P(B)= 0.250[/tex]

For Box C

[tex]P(C) = \frac{1}{6} + \frac{1}{9} + \frac{1}{9}[/tex]

Take LCM

[tex]P(C) = \frac{3+2+2}{18}[/tex]

[tex]P(C) = \frac{7}{18}[/tex]

[tex]P(C) = 0.389[/tex]

From the calculations above, box C has the highest probability of 0.389 compared to 0.250 (of box B) and 0.361 (of box A)

Hence, the food should be placed in Box C

Answer:

[tex] \frac{14}{5} [/tex]

Step-by-step explanation:

1) Use this rule : a ÷ b/c = a × c/b.

[tex] \frac{7}{2} \times \frac{4}{5} [/tex]

2) Use this rule: a/b × c/d = ac/bd.

[tex] \frac{7 \times 4}{2 \times 5} [/tex]

3) Simplify 7 × 4 to 28.

[tex] \frac{28}{2 \times 5} [/tex]

4) Simplify 2 × 5 to 10.

[tex] \frac{28}{10} [/tex]

5) Simplify.

[tex] \frac{14}{5} [/tex]

Therefor, the answer is 14/5. And is decimal form it would be, 2.8.

Answer:

The answer is 4

Step-by-step explanation:

Answer:

1/6 of 2/7 is 1/21

1/2 of 168 is 84

Step-by-step explanation:

top times top and bottom times bottom then reduce

1/2 times anything is just the other number divided by 2

for example 1/2*168 is the same thing as 168 divided by 2

Answer:

2(b-40.5)

Step-by-step explanation:

2(b-81) therefore 2 is the HCF(Heighest common factor)

u have to divide both terms by 2

(2b÷2)-(81÷2)

2(b-40.5)

Answer:

(5,-3)

Step-by-step explanation:

You just find the middle #

(3,-1)  and   (7,-5)

the middle point of 3 and 7 is 5

the middle point of -1 and -5 is -3

so (5,-3)

Answer:

The factory should produce 166 pairs of high-grade shoes and 364 pairs of low-grade shoes for maximum profit

Step-by-step explanation:

The given parameters for the shoe production are;

The number of low grade shoes the factory produces ≥ 2 × The number of high-grade shoes produced by the factory

The maximum number of shoes the factory can produce = 500 pairs of shoes

The number of high-grade shoes the dealer calls for daily ≥ 100 pairs

The profit made per pair of high-grade shoed = Birr 2.00

The profit made per of low-grade shoes = Birr 1.00

Let 'H', represent the number of high grade shoes the factory produces and let 'L' represent he number of low-grade shoes the factory produces, we have;

L ≥ 2·H...(1)

L + H ≤ 500...(2)

H ≥ 100...(3)

Total profit, P = 2·H + L

From inequalities (1) and (2), we have;

3·H ≤ 500

H ≤ 500/3 ≈ 166

The maximum number of high-grade shoes that can be produced, H ≤ 166

Therefore, for maximum profit, the factory should produce the maximum number of high-grade shoe pairs, H = 166 pairs

The number of pairs of low grade shoes the factory should produce, L = 500 - 166 = 334 pairs

The maximum profit, P = 2 × 166 + 1 × 364 = 696

Answer:

Step-by-step explanation:

55%

Complete question :

You randomly choose a tile. Without replacing the first tile, you choose a second tile. Find the probability of the compound event. Write your answer as a fraction or percent rounded to the nearest tenth. The probability of choosing two even numbers is

Tiles : 7,6, 5, 8, 9, 10, 20

Answer:

2 /7

Step-by-step explanation:

The probability of a compound event in the scenario described above :

P(1st pick) * p(second pick)

Recall: this event is without replacement

P(choosing two even numbers)

Probability = required outcome / Total possible outcomes

Required outcome = even Number tiles = (6, 8, 10, 20) = 4

Total possible outcomes = number of tiles = 7

P(even number on first pick) = 4/7

P(even on second pick) = 3 / 6 = 1/2

P(compound event) = 4/7 * 1 /2 = 4 /14 = 2 /7

Answer: The real distance from the shop to the store = 24 km.

Step-by-step explanation:

Given: The distance from the big star coffee to the restaurant supply store  = 3cm  (On map)

Scale of the map : 1 cm to 8 km

That means, the real distance from the shop to the store = 3 x ( 8 km ) = 24 km

Hence, the real distance from the shop to the store = 24 km.

Answer: 2.1

Step-by-step explanation:

Answer:

The [tex]pH[/tex] of the clean compound is approximately 10.495.

Step-by-step explanation:

If the cleaning ion concentration of the cleaning compound is [tex][H^{+}] = 3.2\times 10^{-11}[/tex], then the [tex]pH[/tex], no unit, of the compound is:

[tex]pH = -\log_{10} [H^{+}][/tex]  (1)

[tex]pH = -\log_{10} (3.2\times 10^{-11})[/tex]

[tex]pH = -\log_{10} 3.2 - \log_{10} (10^{-11})[/tex]

[tex]pH = -\log_{10} \frac{32}{10} +11[/tex]

[tex]pH = -\log_{10} 32 + \log_{10} 10 + 11[/tex]

[tex]pH = -\log_{10} 32 +12[/tex]

[tex]pH \approx 10.495[/tex]

The [tex]pH[/tex] of the clean compound is approximately 10.495.

Answer:

1 - B

2 - B

Step-by-step explanation:

Hey There!

The slope is the change in y over change in x

In the graph shown as y goes up 3 x goes down 4

so the slope is -3/4 or B

See graph below for number 2

I had plotted the two points (4,6) and (2,12) and the equation that passed through those points was y=-3x+18 so your answer is B

Answer:

45

Step-by-step explanation: