Help me out? most brainliest!

Answer:

a) a1=15 first term

b) d=-8 common difference

Step-by-step explanation:

1)a1+d=7

2)a1+a2+a3+a4=12

a1+a1+d+a1+2d+a1+3d=12

4a1+6d=12

2a1+3d=6

We have the system of equations where a1+d=7 and 2a1+3d=6

3a1+3d=21

2a1+3d=6

Subtract the second equation from the first one

a1=15

d=-8

First term = 15

Common difference = -8

Let the first term be a and common difference be d.

Therefore,

a+d = 7       -     eq. 1

a+(a+d)+(a+2d)+(a+3d) = 12      -    eq. 2

4a + 6d = 12

4a + 4d + 2d = 12

Dividing both sides by 2,

2a + 2d + d = 6

2 (a+d) + d = 6

Substituting value of (a+d) in the above equation,

2*7 + d = 6

d = 6 - 14

d = -8

Substuting value of d in eq. 1

a+d = 7

a + (-8) = 7

a = 7 + 8

a = 15

To learn more about arithematic proggresions:

https://brainly.com/question/24016699?referrer=searchResults

Gross income is: The total amount of earned salary or wages. Option C is the correct answer.

Gross income refers to the total amount of money earned by an individual before any deductions or taxes are taken out. It represents the complete earnings from employment or other sources of income before any adjustments or deductions are made.

Gross income includes the full amount of salary or wages earned by an individual, as well as any additional income such as bonuses, commissions, or tips.

Option A is incorrect because gross income is the total amount earned before tax and benefit deductions are applied.

Option B is incorrect because gross income is not after tax, but rather before any tax deductions.

Option D is incorrect because gross income does not specifically refer to the amount withheld for taxes, but rather the total amount earned before any deductions.

For such more question on Gross income:

https://brainly.com/question/1931633

#SPJ8

Answer:

Principal=P=24,000

Rate of interest=r=15%

Time=n=2

3

1

years

Here first we take n=2years

A=P(1+

100

r

)

n

where A=Amount and n=number of years

A=24000(1+

100

15

)

2

=24000×

100

115

×

100

115

=Rs.31,740‬

The amount after 2 years is Rs31,740‬

Now principal=Rs.31,740‬

Simple interest for last

3

1

year is

100

PRT

=31,740‬×

100

15

×

3

1

= Rs.1,587‬

∴ Amount after 2

3

1

year= Rs.31740+1587= Rs.33,327

C.I =A−P

∴C.I=33,327−24,000=Rs.9,327‬

Answer:

solution :

principal (p)=24000

rate of interest (r)=15%

time(t)= 2 years

simple interest (S.I)=?

amount (a)=?

now,

S.I=PRT

100

=24000*15*2

100

=240*15*2

=7200

Again,

a=P+S.I

=24000+7200

=31200#

Answer:

3

Step-by-step explanation:

i think

Answer:

[tex]4( \frac{1}{2} + \frac{3}{4} ) - 2 \\ = 4( \frac{2 + 3}{4} ) - 2 \\ = 4( \frac{5}{4}) - 2 \\ = 5 - 2 \\ = 3[/tex]

Answer:

√17

Step-by-step explanation:

An irrational number is a number that cannot be expressed as a ratio of two integers. Or in other words, an irrational number can't be expressed as a fraction. You really cant divide one integer by another integer to get √17, so that makes it an irrational number.

Answer:

8×18=144

4±15=19

144÷19

7.579 answer

Answer:

hope it's helps you.......

Answer:

Equation is y=2x+12

The image is a picture of the graph(it's not the best but it's something.

Answer:

that's is my answer for the question

Answer:

4y-9

Step-by-step explanation:

y is the number, 4 times the number = 4y

so 4y-9

Answer:

1st expression= rational 2nd expression= rational 3rd expression = irrational

Step-by-step explanation:

The first and second expressions are rational because they both equal whole numbers (4 and 3) while the last expression equals a decimal that goes on forever with no end, thus making it irrational.

Answer:

Step-by-step explanation:

( A ). It has reflectional symmetry with one line of symmetry.

Answer:

Directly, it would be 96/100. However,  we can reduce it to become 48/50 = 24/25.

(underlined is simplest answer)

24/25

Step-by-step explanation:

96%

=96/100

=24/25

answer

Answer:

-40

Step-by-step explanation:

[tex] \sqrt{5} \times - 4 \sqrt{20} [/tex]

Multiplication is commutative.

[tex] - 4 \sqrt{20} \times \sqrt{5} [/tex]

Apply Profuct Rule

[tex] - 4 \sqrt{100} [/tex]

Simplify sqr root of 100

[tex] - 4 \times 10 = - 40[/tex]

Hi ;-)

√5 · (-4√20) = -4√(5 · 20) =

= -4√100 = -4 · 10 = -40

Answer:

False

Step-by-step explanation:

Those straight lines that look like this -> |

Represent absolute value.

All absolute value means is the distance a number is from zero.

For example: -2 is 2 numbers away from zero.

5 is 5 numbers away from zero.

-7 is 7 numbers away from zero.

So when something says |-7| that is the same value as 7

So 7 = 7

NOT 7>7 (that doesn't make sense)

Answer:

a one is right answer

Step-by-step explanation:

h.j.j.k kaoa0

Step-by-step explanation:

the answer is in the graph above

Answer:

-10 I guess its this maybe

Answer:

500

Brainliest, please!

Step-by-step explanation:

We are adding 1000 each time.

500000/1000 = 500

Answer:

Step-by-step explanation:

[tex]Number\ of\ terms\ =\dfrac{500000-1000}{2000-1000} +1\\\\=\dfrac{499000}{1000} +1\\\\=499+1\\\\=500\\[/tex]

Answer: 1st bar: 1=100%

2nd bar= 1/2=50%

3rd bar= 1/3= 33.3%

4th= 1/4= 25%

5th= 1/5= 20%

Last bar= 1/10= 10%

Step-by-step explanation:

Answer:

[tex] = \frac{11}{3} = 3 \frac{2}{3} [/tex]

Step-by-step explanation:

[tex] \frac{ - 1\frac{5}{6} }{ - \frac{1}{12} } = \frac{ - \frac{11}{6} }{ - \frac{1}{2} } [/tex]

[tex] \frac{ - \frac{11}{6} }{ - \frac{1}{2} } = \frac{ \frac{11}{6} }{ \frac{1}{2} } [/tex]

[tex] = \frac{11}{3} = 3 \frac{2}{3}[/tex] ✅

Answer:

9

Step-by-step explanation:

10-((-3) + -6)-10

10-(-9)-10

10+9-10

9

Answer: 120 m/min or 2 m/s

Concept:

Here, we need to know how to calculate velocity.

Velocity = ΔD / ΔT

The SI unit of velocity is m/s

Solve:

Given information

Distance = 1200 m

Time = 10 min

Given expression

Velocity = ΔD / ΔT

Substitute values into the expression

Velocity = 1200 / 10

Velocity = 120 m/min

Extra:

**Disclaimer** Ignore this part if it is irrelevant to what you are learning.

If the question needs an answer with SI unit, then please see below:

Given information

Distance = 1200 m

Time = 10 min = 10 × 60 = 600 sec

Given expression

Velocity = ΔD / ΔT

Substitute values into the expression

Velocity = 1200 / 600

Velocity = 2 m/s

Hope this helps!! :)

Please let me know if you have any questions

Answer:

- 2/3, 6

Step-by-step explanation:

Answer:19

Step-by-step explanation:

3x3=9 then add by 10 giving u the sum of 19

<3

Answer:

x = 35

Step-by-step explanation:

Co interior angle sum to 180° , so

x + 30 + 3x + 10 = 180 , that is

4x + 40 = 180 ( subtract 40 from both sides )

4x = 140 ( divide both sides by 4 )

x = 35

Answer:

Perimeter of a square

Step-by-step explanation:

The formula for finding out the perimeter of a square is P = 4s

Answer:

I will help

Step-by-step explanation:

Answer:

125 inches

Step-by-step explanation:

In one minute caterpillar crawls 25 inches. So in 5 minutes we have 5 times 25 inches is 125 inches.

By equation

Additional: 25 + 25 + 25 + 25 + 25 = 125 (inches)

Mutiplication: 25 * 5 = 125 (inches)

The caterpillar crawls 125 inches in 5 minutes

because it is said that the caterpillar crawls 25 inches in one minute so we can use multiplication 25 x 5 = 125

Answer:

it is rational

Step-by-step explanation:

Answer:

it's rational number

I hope it's helps you