Which was a challenge for the earliest permanent settlements?

Flooding allowed villagers to expand their property.
Fire risk increased due to the closeness of buildings.
Disease was a threat because of the close proximity to the rivers.
Droughts were a challenge that villagers overcame with technology..

Answers

Answer 1

Answer:

B

Step-by-step explanation:

Answer 2

Answer:

b

Step-by-step explanation:


Related Questions

A parallelogram has an area of 240 square inches and a height of 12 inches. What is the measurement of the base?

Answers

I hope it is helpful for you .....

What steps would you follow in order to solve the equation?

w/8 - 4 = 20

add 4 on each side and divide by 8
subtract 4 on each side and multiply by 8
add 4 on each side and multiply by 8
subtract 4 on each side and divide by 8

Answers

Answer:

128

Step-by-step explanation:

Step one:

given the expression w/8 - 4 = 20

the first operation is to isolate the term that has w by adding 4 to both sides

w/8 - 4+4 = 20+4

w/8 = 16

Required

the value of w

Step two:

the next step is to cross multiply

w=16*8

w=128

Writ an equation of a parabola that has a vertex (1,3) and passes through the point (2,5)

Answers

This is what I got hope it helps

Answer:

y=2x+1

Step-by-step explanation:

Find 7% of £40
PLEASE SHOW WORKINNG OUT

Answers

Answer:

£2.80

Step-by-step explanation:

7%= 7/100

(7/100)*40=2.8

Answer:

=£ 2.80  or   £2 80p

Step-by-step explanation:

7% of £40

7 x 40 = 280

100           100

= £2.80 or £2 80p

Maya will deposit $1,650 in an account that earns 5% simple interest every year. Her brother, James, will deposit $1,600 in an account that earns 8% interest compounded annually. The deposits will be made on the same day, and no additional money will be deposited or withdrawn from the accounts. Compare and contrast the two siblings' accounts after four year

Answers

Answer:

Step-by-step explanation:

Step one:

given data

Maya

P=$1650

r=5%= 0.05

t= 4 years

The simple interest expression is

A=P(1+rt)

A=1650(1+0.08*4)

A=1650(1+0.32)

A=1650(1.32)

A=1650*1.32

A=$2178

James

P=$1600

r=8%= 0.08

t=4years

The compound interest expression is

A=P(1+r)^t

A=1600(1+0.08)^4

A=1600(1.08)^4

A=1600*1.360

A=$2176

After 4 years Mayas' balance is $2178

After 4 years James' balance is $2176

the difference is =2178-2176=$2

Heyy! What's the answer to this!?!? so far i got 1 out of 2 makrs so im like.. stuck but yehh

Answers

YYY, GYY, YGY, YYG, GGY, YGG, GYG, and GGG should be the answer

Answer:

yyy ggg gyy ygg ggy yyg ygy gyg

Step-by-step explanation:

The base of an isosceles triangle is a third as long as the two equal sides (each, not
combined). Write the perimeter of the triangle as a function of the length of the base.

Answers

Answer:

The perimeter is 7b

Step-by-step explanation:

An isosceles triangle has exactly two sides of the same length. Suppose we have an isosceles triangle with the base as the unequal side length of b.

The perimeter of the triangle is:

P = x + x + b = 2x + b

Being x the two equal side lengths.

It's given the base b of the triangle is one-third of any of the other sides, that is:

b = 1/3 x

Or, equivalently:

x = 3b

Thus, the perimeter of the triangle is:

P = 2x + b =  = 2(3b) + b

P = 6b + b = 7b

The perimeter is 7b

Please help! It’s already late! Help asap!

Answers

Answer:

D

explain:

attachment

Answer:

The answer is x = 6.

Step-by-step explanation:

The middle line is 2, and the leg is [tex]\sqrt{13}[/tex]. We can use the pythagorean theorem and use [tex]\sqrt{13}[/tex] as the hypotenuse and have 2 be a leg.

[tex]a^{2} + b^{2} = c^{2} \\\\2^{2} + b^{2} = \sqrt{13}^{2}[/tex]

[tex]4 + b^{2} = 13\\\\b^{2} = 9\\b = 3[/tex]

Since we know one of the bottom parts of x is 3, and the other triangle is the same as the on we solve, we do 3 + 3 which is 6. 6 is equal to x.

#teamtrees #WAP (Water And Plant)

Consider the scale drawing and actual drawing of an office.
A smaller rectangle has a length of 2.5 inches and width of 1.5 inches. A larger rectangle has a length of 5 yards and width of 3 yards.

Compare the scale drawing to the actual drawing. What information is needed to find the area?

1. The scale factor is
.
2. The area of the scale drawing is
.
3. To find the area of the actual drawing, multiply the area of the scale drawing by the

of the scale factor.

Answers

a)Scale factor is 72.

b)The area of the scale drawing is 3.75 square inches.

c)To find the area of the actual drawing, multiply the area of the scale drawing by 5184.

Length of the smaller rectangle =2.5inches

Width of the smaller rectangle = 1.5inches

So, the area of the smaller rectangle = 2.5*1.5 = 3.75 square inches.

Length of larger rectangle = 5 yards

Width of larger rectangle =3 yards

So, the area of the larger rectangle = 15 square yards = 15*36*36 = 19440 inches.

What is the scale factor?

The scale factor is the factor by which the dimension of an object is enlarged.

a)Scale factor = dimension of the larger rectangle/ corresponding dimension of the smaller rectangle

Scale factor = 5 yards/ 2.5 inches

as we know that 5 yards equals 180 inches

So, scale factor = 180/2.5 = 72

b)The area of the scale drawing = 3.75 square inches.

c)Area of actual drawing/ area of scale drawing = 19440/3.75 = 5184

So, to find the area of the actual drawing, multiply the area of the scale drawing by 5184.

therefore, a)Scale factor is 72

b)The area of the scale drawing is 3.75 square inches.

c)To find the area of the actual drawing, multiply the area of the scale drawing by 5184.

To get more about scale factor visit:

https://brainly.com/question/25722260

Answer:

(A) 2

(B) 3.75

(C) square

Step-by-step explanation:

Got it right edge 2022

If M is in the interior of ∠RTD, m∠RTM = 40°, and m∠RTD = 65°, then m∠MTD = .

Answers

Answer:

MTD = 75

Step-by-step explanation:

RTD + RTM + MTD = 180

     65 + 40 + MTD = 180

            105 + MTD = 180

Subtract 105 from both sides.

                      MTD = 75

Don't forget to mark me brainliest : )

When two straight lines or rays intersect at a shared endpoint, an angle is generated. The measure of the angle ∠MTD is equal to 15°.

What is an angle?

When two straight lines or rays intersect at a shared endpoint, an angle is generated. An angle's vertex is the common point of contact. Angle is derived from the Latin word angulus, which means "corner."

Given that point M is in the interior of ∠RTD. Also, the measure of ∠RTM=40°, and ∠RTD = 65°.

Now, since the two angles together form ∠RTD, therefore, we can write,

∠RTD =  ∠RTM + ∠MTD

65° = 40° + ∠MTD

∠MTD = 65° - 40°

∠MTD = 15°

Hence, the measure of the angle ∠MTD is equal to 15°.

Learn more about Angle here:

https://brainly.com/question/7116550

#SPJ2

Quadratic functions. Did I do it right?

Answers

Answer:

1) The graph is opening upwards

2) Axis of symmetry is x=-2

3) Vertex: (-2, 1) minimum y=1

4) y intercept is (0, 9)

5) domain: x|x ∈ R (All real numbers)

6) Range y|y ≥ 1

if the cost of 8 mobile set is rs 40,000.how many mobile sets can be purchased for Rs 100,000​

Answers

Answer:

20 mobile sets.

Step-by-step explanation:

Every mobile set costs:

40000 / 8

= 5000 Rs.

Therefore, for 100,000 Rs, the number of mobile sets that can be purchased is:

100,000 / 5000

= 20 mobile sets.

Hope this helped!

Please help I have no clue

Answers

Answer:

c

Step-by-step explanation:

Pls help show work please

Answers

Each bracelet is $5, this can be represented as 5b. (Where b is number of bracelets)

Each necklace is $8, this can be represented as 8n. (Where n is number of necklaces)

We know that the total money raised needs to be at least $100, but it can also be more than that.

So we know that 8n+5b will be greater than or equal too 100.

8n+5b ≥ 100

Help will give the brain crown or whatever it is!!!

Answers

Answer:

A will be 5 and B will be 25

Write each number in standard notation.
1) 6 x 103
2) 4.5 x 102
3) 7 x 107
4) 1.05 x 104
5) 3.052 x 103
6) 5 x 100
7) 9.87 x 10
8) 5.43 x 104
9) 4.32 x 103

Answers

1) 618

2) 459

3) 749

4) 109.2

5) 314.356

6) 500

7) 98.7

8) 564.72

9) 444.96

Wish you luck!

one sixth of the students in a school marching band are in the percussion section, the percussion section has 6 students, how many students are in the marching band?

Answers

Answer:

36 students

Step-by-step explanation:

because if 1/6 is 6 students then you have to multiply the 6 by 6

Answer:Idk

Step-by-step explanation:

Two of the​ top-grossing concert tours were by a jazz band and a rock band. Together the two tours visited 177 cities. The jazz band visited 91 cities more than the rock band. Taking into account the constraint that the rock band must visit no less than 50 cities, find how many cities each group visited and determine whether the solution is viable or nonviable.(1 point)

The jazz band visited 134 cities and the rock band visited 43 cities. The solution is viable.

The jazz band visited 134 cities and the rock band visited 43 cities. The solution is nonviable.

The jazz band visited 124 cities and the rock band visited 53 cities. The solution is viable.

The jazz band visited 124 cities and the rock band visited 53 cities. The solution is nonviable.

Answers

Answer:  A.)

The jazz band visited 134 cities and the rock band visited 43 cities. The solution is viable.

Answer:

The jazz band visited 124 cities and the rock band visited 53 cities. The solution is viable.

Step-by-step explanation:

6mn (2m-3n) equals to?

Answers

Answer and Step-by-step explanation:

Distribute the 6mn to the 2m and -3n

The answer is:

[tex](12m^{2} n ) - 18mn^{2}[/tex]

#teamtrees #WAP (Water And Plant)

Answer:

12m^2n - 18mn^2

Step-by-step explanation:

6mn(2m-3n)

Multiply with distributive property, so basically just multiply

12m^2n - 18mn^2

The ratio of cats and dogs is 6:13. If there are a total 117 dogs, how many cats are there

Answers

Answer:

496

Step-by-step explanation:

I think

-6x+3y=-21
write in slope-intercept form: y=mx+b please and show work!

Answers

You should


It’s like
Y is 3. And X is -6
And you can do the other part of it let me know if you have questions

I hope it help you

factorise (x²+3x)²-3(x²+3x-4​

Answers

Answer:x^4+6x^3+6x^2-9x+12

Step-by-step explanation:

Find all real square roots of -100 if there is more than one answer separate them with commas if there are none, click on “None”

Answers

Answer:

None

Step-by-step explanation:

Square roots of negatives are imaginary numbers.

√-100=10iBut, i, √-1, is an imaginary number as the square root of negatives because if x•x=-1 (or any other negative), there would be no valid x.

Identify the slope and y-intercept of the line for each equation.
7. y = -5x-3/4
8. y = 1/4x+5​

Answers

Answer:

7. Slope = -5

Y-intercept = -3/4

8. Slope = 1/4

Y-intercept = 5

Step-by-step explanation:

y = mx + b

Slope = m

Y-intercept = b

Ok I need help: 1/3^3 and 2/5^4 (exponents)please help I need answers

Answers

Answer:

[tex]\frac{1}{27}[/tex] and [tex]\frac{16}{625}[/tex]... or [tex]\frac{1}{27}[/tex] and [tex]\frac{2}{625}[/tex]... read below!

Step-by-step explanation:

The first set of answers ([tex]\frac{1}{27}[/tex] and [tex]\frac{16}{625}[/tex]) were assuming that the problem was [tex](\frac{1}{3})^3[/tex] and [tex](\frac{2}{5})^4[/tex].

The second set of answers ( [tex]\frac{1}{27}[/tex] and [tex]\frac{2}{625}[/tex]) were assuming that the problem was [tex]\frac{1}{3^3}[/tex] and [tex]\frac{2}{5^4}[/tex] .

Please be clear in your notation next time!

15 mm 8 mm What is the length of the hypotenuse? c= millimeters?​

Answers

Answer:

C= 17mm

Step-by-step explanation:

Write the equation of the line fully simplified slope-intercept form. help

Answers

Answer:

y = 4x -8

Step-by-step explanation:

The y intercept is -8 so our b term for y = mx + b is 8.

The line goes up 4 y values every one x value to the right

Answer:

y = 3x - 8

Step-by-step explanation:

To write the equation of the line in slope-intercept form, or y = mx + b, we have to find the y-intercept (b) and the slope(m).

To find the y-intercept, look at the graph at find where the line intercepts the y-axis. On this graph, the line intercepts at y = -8. Now we know the value of b.

To find the slope, look at the rise over run between two points. The line goes up by 3 every time it goes over 1. this means that our slope is 3.

Now we can input the values of the slope and the y-intercept into the equation.

y = 3x - 8

I hope this helps :)

Can anybody give me the answer for this.. I have no idea how to do it and it would really improve my grade

Answers

Step-by-step explanation:

The question is to combine the equations, so we should add them.

- 2x -4y = -26

+ - 3x -3y = - 12

(same signs add, different signs subtract)

-5x -7y = -38

(in the question there are two boxes at the side of the eqaution you should put (+)sign there as youre adding them)

If this question was supposed to be subtracted it would give a while different ans)

what will you get when you round the number 90 in tens and hundreds

Answers

Answer:

00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

Step-by-step explanation:

Answer:

I think it's 100

Step-by-step explanation:

90 rounded to nearest ten is 90, and 90 rounded to the nearest hundred is 100

There are two polygons. The larger one has three times as many sides as the smaller one.
Its angle sum is four times as big. How many sides does the smaller polygon have?

Answers

Answer:

Step-by-step explanation:

There are two polygons. The larger one has three times as many sides as the smaller one. Its angle sum is four times as big. How many sides does the smaller polygon have? (Need full solution)?

“Three times as many sides” means the larger polygon has a multiple of 3 sides. 3 is the fewest sides any polygon can have, so it has not less than 9 sides.

Its angle sum is four times the smaller one’s. This applies to interior angles.

A triangle’s sum is 180. A square’s is 360. A pentagon’s is 540. Any sum will be a multiple of 180, and equal to the number of sides minus two, then multiplied by 180.

A hexagon has 6 sides, so 4×180=720 degrees sum. That part fits the triangle, but we know that can’t be the answer because 3×3=9.

So start at 9.

7×180÷4 can’t be a multiple of 180. What we need is a multiple of 3 which is 2 greater than a multiple of 4.

18 fits that description.

The 18-gon’s interior sum is 16×180=2880, divide that by 4 to get 720, which is the hexagon’s sum.

18÷6=3, so we have a solution. The smaller polygon can be a hexagon.

We should check the next one though. Multiples of 3: 21, 24, 27, 30, 33, 36, 39, 42 (every 4th multiple of 3 will be 2 more than a multiple of 4).

So the 30-gon:

28×180=5040

5040÷4=1260

1260÷180=7

7+2=9

9×3=27

Off by 3.

The 42-gon:

((((((42–2)×180)÷4)÷180)+2)×3)=36

Off by 6. It will keep getting farther away, so we have a unique solution.

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