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4 years ago

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Mathematics

2 answers:

KonstantinChe [14]4 years ago

8 0

I think a=7 the correct answet

erica [24]4 years ago

7 0

Answer:

a = 7

Step-by-step explanation:

Using the rule of radicals

$\sqrt{a}$ × $\sqrt{b}$ = $\sqrt{ab}$

Given

$\sqrt{5}$ ( $\sqrt{18}$ + $\sqrt{32}$ )

Distribute parenthesis by $\sqrt{5}$

= $\sqrt{5(18)}$ + $\sqrt{5(32)}$

= $\sqrt{90}$ + $\sqrt{160}$

= $\sqrt{9(10)}$ + $\sqrt{16(10)}$

= $\sqrt{9}$ × $\sqrt{10}$ + $\sqrt{16}$ × $\sqrt{10}$

= 3 $\sqrt{10}$ + 4 $\sqrt{10}$

= 7 $\sqrt{10}$ ⇒ a = 7

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3 years ago

Find the five-number summary for the given data. Min Q1 Q2 Q3 Max

Aleonysh [2.5K]

Answer with Step-by-step explanation:

16 19 21 26 27 29 34 35 35 39 40 41 42 50 50 52 57 60 75 76 78 81 84

the data is already arranged in ascending order

Min=16

Max=84

The quartiles for the odd set of data is given by

$Qi=\dfrac{i(n+1)}{4}\ th\ term$

where n is the number of elements

Here, n=23

$Q1=\dfrac{(23+1)}{4}\ th\ term$

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Q2=12 th term

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Hence, five-number summary for the given data is:

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3 years ago

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kotykmax [81]

Answer:

(b) $\displaystyle -\frac{1}{2} = m$

(a) $\displaystyle 2 = m$

Step-by-step explanation:

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3 years ago

The value of y varies directly with x2, and y = 150 when x = 5. What is the value of y when x=3?

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are 1 and 2 answers becuas e if are 2

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