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3 years ago

What is b? 6/8 = 21/b

Mathematics

2 answers:

slega [8]3 years ago

8 0

Answer:

b = 28

Step-by-step explanation:

$\frac{6}{8} = \frac{21}{b} \\ \\ b = \frac{21 \times 8}{6} \\ \\ b = \frac{7\times 8}{2} \\ \\ b = 7 \times 4 \\ \\ \huge \red{ \boxed{ b = 28}}$

padilas [110]3 years ago

4 0

Answer:

b = 28

Step-by-step explanation:

8*21 then 168/6 = 28

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If h(x) = 5 – 7x^2. what is h(-1)?

ankoles [38]

Step-by-step explanation:

h(x)=5-7x²

h(-1)=5-7×(-1)²

5-7
-2

hope it helps.

<h2>stay safe healthy and happy..</h2>

7 0

3 years ago

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Contact [7]

The correct answer is: Option (A) $\frac{v-z}{w-x}$ 

Explanation:
If both lines are parallel, then their slopes must be equal.

For the line PQ, the slope is:
Slope of PQ = $\frac{v-z}{w-x}$ --- (1)

For the line P'Q', the slope is:
Slope of P'Q' = $\frac{v+b-z-b}{w+a-x-a}$
Slope of P'Q' = $\frac{v-z}{w-x}$ --- (2)

As (1) = (2), hence the lines are parallel and their slope is $\frac{v-z}{w-x}$ (Option A).

4 0

4 years ago

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There are 5 girls and 1 boy taking swimming lessons. The ratio that compares the number of girls taking

Sergio [31]

Answer:

5:6

five of the 6 students are girls

5/6

Step-by-step explanation:

Not sure if these are the three different ways you wanted, but all of these represent the number of girls compared to the total number of students.

5 0

3 years ago

If anyone can give me the answer that will be greatly appreciated :)

vfiekz [6]

42-x=58

or, -x=58-42

with change in side sign also chamges we change sides to make like terms in one side and unlike in amother side.

or, -x= 16

or,x=-16.

therefore x=-16...

Hope this helps you.

3 0

3 years ago

Nookie1986 [14]

The ratio of the height to shadow length is a constant.
.. (5 ft)/(132 ft) = (tree height)/(144 ft)
.. (tree height) = (144 ft)*(5/132) = 5 5/11 ft

8 0

3 years ago