pls help thank you:)​

Answer:

15

Step-by-step explanation:

x - y = 10, then x = 10 + y

x + y = 20

substitute for x:

10 + y + y = 20

2y = 10

y = 5

x = 10 + 5 = 15

Answer:

x + 2y = -2

Step-by-step explanation:

Well let's examine the relation between x and y in a perpendicular line.

We can use the fact that for a line Ax + By = C, any line with equation Bx + (-A)y = D is perpendicular (swapping A and B gives a mirror image with respect to the line x=y and changing one of the signs gives a mirror image with respect to axis x or y. Those two together give a perpendicular line).

So we're looking for a line with equation x + 2y = D

We know what it passes through the point (6, -4), so let's input it into the equation x + 2y = D

6 + 2*(-4) = D

6 - 8 = D

D = -2

So the equation is x + 2y = -2

note that 2x + 4y = -4

or any other multiple also works.

Answer:

150cm²

Step-by-step explanation:

the equation is 6a² where a is the length of the edge

Answer:

150cm²

Step-by-step explanation:

If the side length of the cube is 5 then you take 5² to get the surface area of one of the face which is 25. Since a cube has 6 sides just 25×6 which is 150.

Answer:

The formula for the equation of a circle is (x – h)2+ (y – k)2 = r2, where (h, k) represents the coordinates of the center of the circle, and r represents the radius of the circle.

i also provided with a chart i dont know if it will help

Answer:

C

Step-by-step explanation:

Step-by-step explanation:

3⁶/3⁸

= 3 × 3 × 3 × 3 × 3 × 3/ 3 × 3 × 3 × 3 × 3 × 3 × 3 × 3

= 1/ 3 × 3

= 1/9 (option C)

= 1/3²

= (1/3)² (option D)

= 3-² (option B)

Answer:

This would be area because you are trying to find the total area that the sprinkler water touched and not the perimeter(circumference) of it

Hope this helps :)

Answer:

Simple interest after 2 year = $36

Step-by-step explanation:

Given:

Amount invested = $300

Number of year amount invested = 2 year

Rate of interest per year = 6% = 6/100 = 0.06

Find:

Simple interest after 2 year

Computation:

Simple interest formula;

Simple interest = [Amount invested][Rate of interest][Number of year]

Simple interest after 2 year = [300][0.06][2]

Simple interest after 2 year = [18][2]

Simple interest after 2 year = $36

Answer:

Step-by-step explanation:

General knowledge to apply with similar questions

If the scale factor is k, then:

Answer:

A=210in^2

Step-by-step explanation:

A=b1+b2/2h

A=(15+20)/2(12)

A=35/2(12)

A=17.5(12)

A=210 in^2

Answer:

Amount of interest pay by Sam = $400

Step-by-step explanation:

Given:

Amount of loan taken by Sam = $5,000

Monthly payment made by Sam = $150

Number of year payment made by Sam = 3 Year

Find:

Amount of interest pay by Sam

Computation:

Total amount pay by Sam in 3 year = Monthly payment made by Sam x 12 x 3

Total amount pay by Sam in 3 year = 150 x 12 x 3

Total amount pay by Sam in 3 year = $5,400

Amount of interest pay by Sam = Total amount pay by Sam in 3 year - Amount of loan taken by Sam

Amount of interest pay by Sam = $5,400 - $5,000

Amount of interest pay by Sam = $400

Answer:

148

Step-by-step explanation:

3p + 85 +2p -10 =180

5p+75=180

5p=105

p=21

3p+85

3(21)+85=148

Answer:

it will look like this let me know if I'm right and GOOD LUCK!

Step-by-step explanation:

Answer:

Step-by-step explanation:

25x = 300

Rearrange to solve

x = 300 divided by 25 = 12

Hope this helps

Answer:

£ 4.20

Step-by-step explanation:

1 kg= £1.20

3.5 kg = £1.20*3.5

=£ 4.20

The cost of the apples being weighed on the scales would be £ 4.20

The unitary method is a method for solving a problem by the first value of a single unit and then finding the value by multiplying the single value.

Multiplication is the mathematical operation that is used to determine the product of two or more numbers.

We are given that Apples are sold in a supermarket at £1.20 per gram.

Therefore, we know that

1 kg= £1.20

For 3.5 kg

= £1.20 x 3.5

=£ 4.20

The cost of the apples is £ 4.20

Learn more about the unitary method, please visit the link given below;

https://brainly.com/question/23423168

#SPJ2

Answer:

V=πr^2h=π·8^2·6≈1206.37158

Step-by-step explanation:

Answer:

Step-by-step explanation:

cos(∠X) = adj./hyp.

arccos(adj./hyp.) = ∠X

arccos(13/18) = 43.761...≈ 43°

Answer:

value of tan θ = 1

Step-by-step explanation:

To find θ do the asin of 1/√2

θ = asin (1/√2)

θ = asin (0.707106781)

θ = 45

and then to find tan θ, do tan 45

tan 45 = 1

Answer:

c

Step-by-step explanation:

log2-log 6=log(2/6)=log (1/3)

log(2) + log(1/6)

log(1/3)

Answer:

x=-4

Step-by-step explanation:

Answer:

295.68

Step-by-step explanation:

Answer:

27

Step-by-step explanation:

(6×3)+(3×3)=27

18. 9.

Answer:

D- 30 square units

Step-by-step explanation:

5 times 12 =60

60/2= 30

Answer:

A

Step-by-step explanation:

Answer:

x^2 + 8x + 7 and x(x + 8) + 7

Step-by-step explanation

Answer:

I believe the answer will be 50+100n dollars

Step-by-step explanation:

n is the number of cavities so however many cavities there is, it gets multiplied by 100, in this case, it is 100*n which is 100n. So your final cost would be 50+100n dollars.

Answer:

a. 121

b.2

Step-by-step explanation:

a.

33/3×11>11

11×11>11

121>11

b.

5×2/8<5

10/8<5

1.25<5

Answer:

The answer is C

Step-by-step explanation:

Hope it helps:)))

Can i have brainy plzzz

Answer:

I'm reading about it and mostly they're saying they were concerned with internal conflict within Russia. I'm not positive, it could be because of the loss of land, but it appears to be more politically motivated. uprisings with in the country. so my best guess would be none of the above