i need the answers por favor

The value of 'k' for the given system of equation that coincides  is 4

k=4

Given :

System of equations

[tex]2x+y=40 \\kx+2y=80[/tex]

The given equation is in the form of ax+by=c

When the two lines coincides then

[tex]\frac{a_1}{a_2} =\frac{b_1}{b_2} =\frac{c_1}{c_2}[/tex]

Lets make the coefficients proportional to each other and then solve for k

[tex]\frac{2}{k} =\frac{1}{2} =\frac{40}{80} \\\frac{2}{k} =\frac{1}{2} =\frac{1}{2} \\\\\frac{2}{k} =\frac{1}{2} \\4=k\\k=4[/tex]

The value of k from the given system of equation is 4

When the line coincides then the value of k is 4

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Answer:

g = 1 1/8

Step-by-step explanation:

g/(3/4) = 1 1/2

g = 1 1/2(3/4) = 1 1/8

Answer: a

Step-by-step explanation: because bess it says she has 6 and is 3 it says have of 6 is 3 so it is 3

The age of Tanisha is 6 years and the age of Bess is 12 years. Therefore, option D is the correct answer.

We need to find the age of Tanisha and Bess.

A statement that the values of two mathematical expressions are equal (indicated by the sign =).

Let the age of Tanisha be x.

Bess is 6 years older than Tanisha.

Now, Bess=x+6

Tanisha is half as old as Bess.

Now, Tanisha=1/2×Bess

⇒x=1/2×(x+6)

⇒x=6

So, Tanisha's age=6 years and Bess's age=12 years.

To learn more about an equation visit:

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

#SPJ2

Answer:

x=5.9

Step-by-step explanation:

First, you want to isolate x so you have to subtract 31.7 from both sides. This will make the equation -3x=-17.7. Because they are both sides are negative, you can change both sides to positive so it will be 3x=17.7. Next, you want x to be 1 so you have to divide 3 in both sides. This will make the equation x=17.7/3. Simplify that to get x=5.9.

If this has helped you, please mark as brainliest.

Answer:

1203.3734754701242754528955797863116165046

welp i cant help but i can sing ;-;

Step-by-step explanation:

Answer:

60

Step-by-step explanation:

[tex]180 - 2(60) = 60[/tex]

Answer:

60°

Step-by-step explanation:

A triangle with two 60° angles has another 60° because 180-(60+60)=180-120=60°.

Also, this is an equilateral triangle.

Answer: Infinite solutions

Step-by-step explanation:

Solve4x+6y=9for x:

4x+6y=9

4x+6y+−6y=9+−6y(Add -6y to both sides)

4x=−6y+9

4x /4 = −6y+9 /4

(Divide both sides by 4)

x= −3 /2 y+ 9 /4

Substitute

−3 /2 y+ 9 /4

for x in 12x+18y=27:

12x+18y=27

12( −3 /2 y+ 9 /4 )+18y=27

27=27(Simplify both sides of the equation)

27+−27=27+−27(Add -27 to both sides)

0=0

Answer:

No, also you can try  to use desmos to figure it out it is a very helpful tool

Step-by-step explanation:

3(x+6)

3x+3(6)

2(1.5x+9)

Answer:

i dont have one,

jus wanted to remind u that the beutiful

person above deserved brainiest

:)

also u need 2 answers minimum to give brainliest

Answer:

Ken class has a median of 84 while Judy class a median of 87

Step-by-step explanation:

Ken class has a median of 84 while Judy class a median of 87

Kens class has a mean score of 83, and Judy's class has a mean score of 86.43(rounded) so, judging by the mean, Judy's class is smarter. If we take a look at the median, (Ken: 84, and Judy: 87) then Judy's class is smarter. So, overall Judy's class is smarter than Ken's class.

Answer:

exact form: is 7/7e and decimal form: it is 0.00638317...

Step-by-step explanation:

d o not know step by step can you help me

Answer:

A

Step-by-step explanation:

20:12/4

5:3

Answer:

The 2 triangles on the right and left are isosceles, so they have 2 equal sides. Consequently, the angles at the base are equal.

Because the opposite angles of a vertix are equal, the triangle in the lower part has the angles x, 58° and 47°.

Because the sum of the inner angles of a triangle is 180, x= 180- (58+47)

x= 180-105 = 75°

Pls mark as brainliest

Answer: x = 72

Step-by-step explanation:

The triangle with ∠a is an isosceles triangle; the other two angles are congruent, let them be y

a + y + y = 180 (sum of angles in triangles)

58 + 2y = 180

Subtract 58 from both sides

2y = 122

Divide both sides by 2

y = 61°

In the triangle with ∠b, b is congruent to another angle, (isosceles triangle) let it be b.

b = 47°

y and b have a relationship with the other two of the angles with ∠x (vertical angles); let them be y and b.

y + b + x = 180

61 + 47 + x = 180

108 + x = 180

Subtract both sides by 108

x = 72

Answer:

13

Step-by-step explanation:

Answer:

2:5

Step-by-step explanation:

Shapes that are similar have the same ratio (and angle measurements), usually the only change in similar shapes is through a dilation or rotation.

Do you mind giving me brainliest?

Hope this helps! :)

Answer:

im pretty positive its exponential

Step-by-step explanation:

Answer:

Linear a good app to do this work is Desmos graph the pairs to see if they are straight

Answer:

A

Step-by-step explanation:

-3x - 5 < -2

-3x < -2 + 5

-3x < 3

-x < 1

x > -1

A, its a closed circle because of ">" symbol

Answer:

A

Step-by-step explanation:

Simply guess and check, meaning the boys category must be divisible by 2 and the girls category must be divisible by 3

A: 24 boys ÷ 2 = 12 (equals a whole number so it is divisible; not a decimal)

36 girls ÷ 3 = 12 (both of the boys and girls are divisible by their corresponding numbers)

Yes

Now make sure the boys are a lower count than the girls as the ratio says it should be 2 to 3, meaning there are more girls than boys

B: 20 ÷ 2 = 10 (divisible)

35 ÷ 3 = 11.666 (this is a decimal answer so it is not divisible)

No

C: 36 ÷ 2 = 18

24 ÷ 3 = 8

Yes, they are divisible

Now lets check if boys have a lower count than girls

36 boys > 24 girls

This is not the solution as it doesn't reflect the correct ratio of less boys than girls

D: 35 ÷ 2 = 17.5 (not divisible)

20 ÷ 3 = 6.66 (not divisible)

Answer:

4cube×acube×b power 6

sorry if you don't understand

Answer:

(2c - 5t - 3u ) + (c + 3t ) + (3t - 4u )

2c-5t -3u+c+3t+3t-4u

3c+t-7u is your answer

Answer:

the answer is 130

Step-by-step explanation:

Answer:

130

Step-by-step explanation:

when adding you positive number to a negative number you have to subtract. so to make it easier im going to change it from -240 +370 to

370-240 and solve

370-240=130

have a great day :D

Answer:

0.15 km/min

Step-by-step explanation:

V=S/T

=50/360

≈0.15km/min

Answer:

4x³

5y^5

Pls mark as brainliest

Answer:$266

Step-by-step explanation:

Cameron :

r = 4 3/8% = 0.04375

P = 7400

For account compounded continuously :

A = Pe^it

i = interest ; t number of years ;

A = 7400 * e^0.04375*7

A = 7400 * e^0.30625

A = 10051.581

Savanna:

r = 4 3/4% = 0.0475

P = 7400

A = P(1 + r/n)^nt

n = number of compounding times per period

A = final amount ; P = initial investment

Compounded daily :

A = 7400(1 + 0.0475/365)^365*7

A = 7400(1 + 0.0001301)^2555

A = 7400(1.0001301)^2555

A = 7400 * 1.3942879

A = 10317.731

Difference :

$(10317.731 - 10051.581)

= $266.15

= $266 (nearest dollar)

Step-by-step explanation:

Answer:

a) 21 √m inches

b) 13√2/2 m

Step-by-step explanation:

a) we want to find the perimeter of an equilateral triangle

An equilateral triangle is one which sides has the same equal length

The perimeter of this triangle is the sum of the lengths of the three sides

Mathematically, we have this as:

7 √m + 7 √m + 7 √m

= 21 √m inches

b) we want to calculate the perimeter of the given rectangle

Mathematically, we can calculate the perimeter of a rectangle using the formula below;

P = 2(l + b)

where l represents the length of the rectangle and b represents the breadth of the rectangle

From the given shape;

l = √50 m, b = 1/2 √32

So, we have the perimeter follows;

2( √32/2 + √50)

= √32 + √50/2

√32 = 4√2

√50 = 5√2

Thus, we have;

4 √2 + 5 √2/2

= (8 √2 + 5 √2)/2 = 13√2/2

Answer:

ok im telling people to help u because i dont know that xd

Step-by-step explanation: