Please help!!!

Can someone find out what a, b, c, and d is??

Answer:

Step-by-step explanation:

Your first step will be to set up the problem:

f(x) - g(x)

Next you will substitute in your values:

(2x + 1) - (x2 - 7)

The easiest way to do the subtraction problems is to distribute your negative into your second set of parenthesis, so your expression would become:

2x + 1 - x2 + 7

Then combine your like terms:

2x - x2 + 8

Lastly put your expression in standard form (highest exponent to lowest)

-x2 + 2x + 8

Hope this helped!

Given:

The rate of interest on three accounts are 7%, 8%, 9%.

She has twice as much money invested at 8% as she does in 7%.

She has three times as much at 9% as she has at 7%.

Total interest for the year is $150.

To find:

Amount invested on each rate.

Solution:

Suppose x be the amount invested at 7%. Then,

The amount invested at 8% = 2x

The amount invested at 9% = 3x

Total interest for the year is $150.

[tex]x\times \dfrac{7}{100}+2x\times \dfrac{8}{100}+3x\times \dfrac{9}{100}=150[/tex]

Multiplying both sides by 100, we get

[tex]7x+16x+27x=15000[/tex]

[tex]50x=15000[/tex]

Dividing both sides by 50, we get

[tex]x=\dfrac{15000}{50}[/tex]

[tex]x=300[/tex]

So, the amount invested at 7% is [tex]300[/tex].

The amount invested at 8% is

[tex]2(300)=600[/tex]

The amount invested at 9% is

[tex]3(300)=900[/tex]

Hence, the stockbroker invested $300 at 7%, $600 at 8%, and $900 at 9%.

Answer:

Given : x/3-5=6

answer = 23

Step-by-step explanation:

x-5=6*3

x-5=18

x=18+5

x=23

Answer:

33

Step-by-step explanation:

let the number be n , then the number divided by 3 is [tex]\frac{n}{3}[/tex] and decreased by 5

[tex]\frac{n}{3}[/tex] - 5 = 6 ( add 5 to both sides )

[tex]\frac{n}{3}[/tex] = 11 ( multiply both sides by 3 )

n = 33

The number is 33

~11.31

Pythagorean Theorem because it is a right triangle.

Answer:

The GCF of 96 and 212 is 4.

Answer:

[tex] {9x}^{2} - 30x + 25[/tex]

[tex]\huge\underline\bold\blue{ƛƝƧƜЄƦ}[/tex]

(3x + 5)(3x - 5)

By using identity

(a + b)(a - b) = a² - b²

3x² - 5²

9x² - 25

Answer:

{x I 8 < x < 65}

Step-by-step explanation:

{x I 8 < x < 65}

Answer:

x° + x° + 10° + x° + 15° + x° + 20° + x° + 25° + x° + 30°

= 6x° + (10 + 15 + 20 + 25 + 30)°

= 6x° + 100

0 = 6x + 100

6x = 100

X = 100/6

X = 16.66

Answer:

Step-by-step explanation:

cosx=100/564

x=arccos(100/564)

x=79.79 degrees (to the nearest hundredth of a degree)

The angle of elevation from the base of a flag pole to the top of the monument is to be considered as the 79.79 degrees.

Since there is 100 feet from the base of the monument.

And, The distance from the base of a flag pole to the top of the monument is 564 feet

Now the angle should be like

cosx = 100/564

x = arc cos(100/564)

x=79.79 degrees

hence, The angle of elevation from the base of a flag pole to the top of the monument is to be considered as the 79.79 degrees.

Learn more about an angle here: https://brainly.com/question/124950

Answer:

Hey do you know the answer to the question you wrote a while ago?

Step-by-step explanation:

(02.05)

Two similar triangles are shown on the coordinate grid:

A coordinate plane is shown. Triangle XYZ has vertices X at negative 5 comma negative 1, Y at negative 6 comma negative 2, and Z at negative 3 comma negative 2. Triangle X double-prime Y double-prime Z double-prime has vertices X double-prime at 10 comma negative 2, Y double-prime at 12 comma negative 4, and Z double-prime at 6 comma negative 4.

Which set of transformations has been performed on triangle XYZ to form triangle X′′Y′′Z′′?  

Do you?? :(

Answer:  

m=0

Step-by-step explanation:

How to solve your question 4 +5=5−4

Step 1: Rearrange Terms 4+5=5−4  4+5=−4+5

Step 2 : Subtract 5 from both sides 4+5=−4+5

                                                                   -5         -5

Step 3 : Simplify 4m= -4m

Step 4: Add 4m to both sides of the equation 4m= -4m

                                                                              +4    +4

Step 5:  Simplify 8m=0

m=0

Answer:

8%

Step-by-step explanation:

For simple interest, we use the equation I = PRT, where I is the interest earned, P is the principal/amount invested, R is the rate as a decimal, not percentage, and T is the time in years.

For this problem, we have to use 0.5 for T, because 6 months is 1/2 a year.

20 = (500)(r)(0.5)

20 = 250r

r = 0.08 = 8%

c=2πr. r=18/2=9

=2 ×22/7 ×9

=56.6 to the nearest tenth

Answer:

gbn

Step-by-step explanation:

Answer:

unbaised and vaild

Step-by-step explanation:

Answer:

(3)

Step-by-step explanation:

Answer:

(6,7),(9,6)

Step-by-step explanation:

HOPE THIS HELPS!!!!

Answer:

1.) 107 observations

2.) the best veterinary hospital is likely to see the most severe cases with larger number of enteroliths

3.) A. sample size is too small for the central limit theorem to apply.

4.) The test requires that the sample mean is normally distributed; this requires that either the population distribution is Normal or the sample size exceeds 30.

5.) a Type I error

Step-by-step explanation:

n = [(Zcritical * σ) ÷ E]²

n = sample size

Zcritical at 99% = 2.58

E = error margin = 0.5

Standard deviation, σ = 2

n = [(2.58 * 2) ÷ 0.5]²

n = [5.16 ÷ 0.5]²

n = (10.32)²

n = 106.5024

n = 107 observations

B.) The thought or decision that the best veterinary hospital is likely to see the most severe cases with larger number of enteroliths will introduce a bias in the study.

C.) For central limit theorem ; sample size must be considerably large ; at least sample size, n ≥ 30

D.) Distribution must be normal it approximately normal, obeying the central limit theorem ; sample size must be considerably large ; at least sample size, n ≥ 30

Answer:

This question needs to be written better

Step-by-step explanation:

Each math symbol has words that direct u to know how/when to use them

For example:

Find the sum of 70 and 83

+- (Addition)-(Words used to say addition: Add, Sum , Plus, Increase, Total)

83+70=153

Find the difference between 83 and 70

_-(Subtraction),(Words used to say subtraction: Minus, Less, Difference, Decrease, Take Away, Deduct)

83-70=13

How many times can 2 go into 12?

÷-(Divide/Division)-(Words that are used to say Divide/Division: Quotient, Goes Into, etc.)

12÷2=6

Find the product of 6 and 7

×-(Multiplication/Multiply)-(Words that are used to say Multiplication/Multiply: Product, By, Times, Lots Of)

6×7=7

Hope this helps!

Hoodmemes~

Answer:

help din HDKE EJFNQKEHWHQODBEHQVEIFNFJRNSJEBSG

Step-by-step explanation:

di ko din alam e AHAHAHAHAHAHAHAHAHA NSKFBWJF S DJEBEJS

JSHEBEJS IF JENSKS.DJWKW

SBWUKWVEUEBJQBRJDNDJXBDJDBDKW

EBEJE KD DJWKQKQBWHS

Answer:

20°

Step-by-step explanation:

180-140=40

1/2 of 40=20

Answer:

0.6

Step-by-step explanation:

2(x+19)=39.2

x+19=19.6

x=0.6

Answer:x=2y=3

Step-by-step explanation: I did this before

multiply 5.5 the width with 1.5 by 3 which gives you 24.75 inches feet long.

5.5 x 1.5 x 3=24.75 that's your answer.

Answer:297 cubic inches, other person is incorrect.




Step-by-step explanation:5.5 inches* 1.5inches * 3 feet
Convert 3 feet to inches and you have 36 inches. So now it becomes 5.5inches*1.5inches*36inches = 297 cubic inches

Answer:

JK

Step-by-step explanation:

As it is shown in the diagram JK is the segment bisector of MN. That means JK cuts MN in half.

Answer:

is it 47? I'm not sure

if not can you explain it to me

Answer:

47 days

Step-by-step explanation:

Since the patch of lily pads double each day, the day before day 48 would cover half of the lake.

Answer:

A) P' (0, -9)

Step-by-step explanation:

Answer:

200.96 units^2 or 64π units^2

Step-by-step explanation:

8^2(3.14) = 200.96 units^2 or 64π units^2

(multiplied by 2 to change the radius to diameter)

Answer:

5 faces, 8 edges, 5 vertices