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3 years ago

15

An architect makes a scale drawing of a building. The scale used is 1 cm represents 20 m. Calculate the actual width of the buil

ding if the width on scale drawing is 24.5 cm

1 answer:

AleksandrR [38]3 years ago

3 0

Answer: 490 m

Step-by-step explanation:

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Given f(x)=20x+11, find f(4)

kakasveta [241]

Answer:

91

Step-by-step explanation:

Substitute 4 in place of x

f(4)=20*4+11

f(4)=80+11

f(4)=91

3 0

2 years ago

What is the distance between (4,7) and (2,2)?

algol [13]

$\bf \textit{distance between 2 points}\\ \quad \\
\begin{array}{lllll}
&x_1&y_1&x_2&y_2\\
% (a,b)
&({{ 4}}\quad ,&{{ 7}})\quad 
% (c,d)
&({{ 2}}\quad ,&{{ 2}})
\end{array}\qquad 
% distance value
d = \sqrt{({{ x_2}}-{{ x_1}})^2 + ({{ y_2}}-{{ y_1}})^2}
\\\\\\
d=\sqrt{(2-4)^2+(2-7)^2}\implies d=\sqrt{(-2)^2+(-5)^2}
\\\\\\
d=\sqrt{4+25}\implies d=\sqrt{29}$

7 0

2 years ago

The sales tax for an item is $44.10 and it cost $490 before tax. find the sales tax rate. write your answer as a percentage

svetoff [14.1K]

Answer:

9% sales tax

Step-by-step explanation:

44.10/490 =

.09

.09 as a percentage is also 9%

6 0

3 years ago

What is the probability of the complement of rolling a number less than 5 by using a six-sided die?

elena-14-01-66 [18.8K]

If 5 and less then D but if just less than 5 then B

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3 years ago

X:y=5:3 and x+y=56 work ouy the value of x and y

emmainna [20.7K]

Answer:

x=35, y=21

Step-by-step explanation:

A way to rewrite the first equation is $\frac{x}{y} =\frac{5}{3}$

after cross-multiplying, we get 3x=5y.

If we solve for one variable, we can substitute it into the other equation.

Let's solve for x.

3x=5y

x=(5/3)y

Now, we can substitute x=(5/3)y in the equation x+y=56.

(5/3)y+y=56

(8/3)y=56

y=21

Going back to x+y=56, we can now plug back in y, knowing that it is 21.

x+21=56

x=35.

8 0

2 years ago