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3 years ago

The scale of a map is 1 cm: 77 km.

1 answer:

4 0

$\bf \stackrel{map}{1~cm}\qquad :\qquad \stackrel{actual}{77~km}\qquad \cfrac{map}{actual}=\cfrac{1}{77}~\hfill \cfrac{\stackrel{map}{3}}{\underset{actual}{a}}=\cfrac{1}{77}\implies 231=a$

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Need help

kow [346]

$1)\\\\\dfrac{-45}{-5}=45:5=9$

$2)\\(-2)(4)=-8\\(2)(-4)+-8\\-16:2=-8\\-16:(-2)=8\neq-8\\\\\text{All of the following expressions have the same value except}\ -16:-2.$

$3)\\-3^2=-3\cdot3=-9$

$(-2)^4=(-2)(-2)(-2)(-2)=16\\-2^4=-(2)(2)(2)(2)=-16\neq16\\(-2)(-2)(-2)(-2)=16\\2^4=(2)(2)(2)(2)=16\\\\\text{All of the following are equivalent except}\ -2^4.$

3 0

4 years ago

Find the 84th term of an arithmetic sequence if the first term and common

mariarad [96]

Answer:

-329

Step-by-step explanation:

1st term a1 = 3, common difference d = -4

84th term,

3+(84-1)(-4)

= -329

8 0

3 years ago

What is 0.001 percent of 4/3?

ArbitrLikvidat [17]

Answer: The required value would be 0.000013.

Step-by-step explanation:

Since we have given that

0.001 % of $\dfrac{4}{3}$

As we know that

To remove the % sign we should divide it by 100.

Mathematically, it would be expressed as

$\dfrac{0.001}{100}\times \dfrac{4}{3}\\\\=\dfrac{0.004}{300}\\\\=0.000013$

Hence, the required value would be 0.000013.

6 0

3 years ago

PLEASE HELP!!!<br>what is the length of segment SR? units

vladimir1956 [14]

According to the attachment at point it makes the angle of 90° with both triangles, so;
SR = SQ
2x + 8 = 8x - 4
and if we find the value of x, we will find the value of line segment SR
8x -2x = 8+4
6x = 12
x = 12/6
x = 2
now put the value of x in SR = 2x + 8 = 2(2) + 8 = 4 + 8 = 12
SR = 12

3 0

4 years ago

Read 2 more answers

Which table of values can be represented by the function y=x+4 ?

ozzi

Answer:

See explanation

Step-by-step explanation:

The given function is $y=x+4$

To create a table we choose some values of x and plug it into the function and solve for y.

When x=-1, $y=-1+4=3$

When x=0 y=0+4

When x=1, y=4+1=5

When x=2, y=6

The table looks like;

x y

-1 3

0 4

1 5

2 6

4 0

3 years ago