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2 years ago

Help please find the area of the figure A=bh

Mathematics

1 answer:

Anarel [89]2 years ago

7 0

Answer:

Step-by-step explanation:

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The scale of a map (in centimeters) says that 4cm represents 5km.

Firlakuza [10]

Answer:

16/5 or 3.2

Step-by-step explanation:

4cm/5km = x/4km

Cross multiply to find answer

5 0

3 years ago

B. Determine the values of a and b so that f is continuous.<br><br> Please help!

wlad13 [49]

Answer:

following are the solution to this question:

Step-by-step explanation:

Please find the complete question in the attached file.

$\lim_{x\to 2}+f(x) = \lim_{x\to 2}+ (ax^2-bx+3) = 4a-2b+3\\\\ \to 4a-2b+3 = 4\\\\ \therefore \ \ 4a-2b = 1\\\\$

The one-sided limits of F(x) at x = 3 must be equivalent for f(x) to be continuous at x = 3.

$\to \lim_{x\to 3}- f(x) = \lim_{x\to 3}- (ax^2-bx+3) = 9a-3b+3\\\\ \to \lim_{x\to 3}+ f(x) = \lim_{x\to 3}+ (2x-a+b) = 6-a+b\\\\$

So,

$\to 9a-3b+3 = 6-a+b\\\\\therefore\\ \to 10a -4b = 3$

$\to 4a - 2b = 1......(a)\\\to 10a - 4b = 3.......(b)\\$

In equation a multiply the by -2 and then add in the equation b:

$\to -8a + 4b = -2\\\to 10a - 4b = 3\\ \to 2a = 1\\\\ \to a = \frac{1}{2}\\\\ \to \ 4(\frac{1}{2}) - 2b = 1\\\\ \to 2 - 2b = 1\\\\ \to -2b = -1\\\\ \to b = \frac{1}{2}$

So, the value of $a \ and \ b= \frac{1}{2}$

4 0

2 years ago

A certain number is multiplied by 4 and then 7 is added to the result then final answer is 39 find the number

Len [333]

4x + 7 = 39

-7 -7

4x = 32

/4 /4

x = 8

The answer is 8.

7 0

3 years ago

What is the value of a in the equation 3a + b = 54, when b = 9?

sergey [27]

A = 15 3 x 15 + 9 = 54 keep up the good work!

3 0

3 years ago

Read 2 more answers

-10 = x - 21 PLS AND THANK U

USPshnik [31]

Answer:

11=x

Step-by-step explanation:

move 21 towards ten and change to positive and then solve it

3 0

2 years ago

Read 2 more answers