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3 years ago

9.1k = 63.7 what does this equal

Mathematics

2 answers:

alisha [4.7K]3 years ago

7 0

Answer:

if you divide you will get 7 is you want to know i made an 100 Step-by-step explanation: edge 2020 - 2021

zheka24 [161]3 years ago

5 0

Step-by-step explanation:

9.1k=64.7

Find k

64.7/9.1=7

Plug in 7

9.1(7)=64.7

Multiply 9.1 and 7=63.7

63.7=64.7

Divide

1.02 or 1 1/50

Hope that helps somewhat

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For which value of x will the rational expression below be undefined? Check all that apply. (x-5)(x+2)/x+1 A. -5 B. -1 C. 1 D. 5

Tresset [83]

Answer:

B. -1

Step-by-step explanation:

Given expression:

(x-5)(x+2)/(x+1)

This is undefined when the denominator is zero:

x + 1 = 0
x = -1

Correct choice is B

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3 years ago

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If todd spent 4.5 hours studying last week, how many minutes did he spend studying?

34kurt

Answer:

It would be B.

Step-by-step explanation:

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3 years ago

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Mitch's father needs 1 and a half tons of gravel he bought 1750 pounds of gravel How many more pounds of gravel does he need??

saw5 [17]

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3 0

3 years ago

Please help with this equation: 4.5(8-x)+36=102-2.5(3x+24)

Solnce55 [7]

answer

x=14

Step-by-step explanation:

4.5(8-x)+36=102-2.5(3x+24)

36-4.5x+36=102-7.5x-60

-4.5x=42-7.5x

7.5x-4.5x=42

3x=42

x=42/3

x=14

6 0

3 years ago

Find <img src="https://tex.z-dn.net/?f=a_%7B1%7D" id="TexFormula1" title="a_{1}" alt="a_{1}" align="absmiddle" class="latex-form

yKpoI14uk [10]

Answer:

$\displaystyle a_{1} = 108$

Step-by-step explanation:

we are given

the sum,common difference and nth term of a geometric sequence

we want to figure out the first term

recall geometric sequence

$\displaystyle S_{ \text{n}} = \frac{ a_{1}(1 - {r}^{n} )}{1 - r}$

we are given that

$S_n=189$
$r=\dfrac{1}{2}$
$n=3$

thus substitute:

$\displaystyle 189= \frac{ a_{1}(1 - {( \frac{1}{2} )}^{3} )}{1 - \frac{1}{2} }$

to figure out $a_1$ we need to figure out the equation

simplify denominator:

$\displaystyle \frac{ a_{1}(1 - {( \frac{1}{2} )}^{3} )}{ \dfrac{1}{2} } = 189$

simplify square:

$\displaystyle \frac{ a_{1}(1 - {( \frac{1}{8} )}^{} )}{ \dfrac{1}{2} } = 189$

simplify substraction:

$\displaystyle \frac{ a_{1} (\frac{7}{8} )}{ \frac{1}{2} } = 189$

simplify complex fraction:

$\displaystyle a_{1} (\frac{7}{8} ) \div { \frac{1}{2} } = 189$

calculate reciprocal:

$\displaystyle a_{1} \frac{7}{8} \times 2 = 189$

reduce fraction:

$\displaystyle a_{1} \frac{7}{4} \ = 189$

multiply both sides by 4/7:

$\displaystyle a_{1} \frac{7}{4} \times \frac{4}{7} \ = 189 \times \frac{4}{7}$

reduce fraction:

$\displaystyle a_{1} = 27\times 4$

simplify multiplication:

$\displaystyle a_{1} = 108$

hence,

$\displaystyle a_{1} = 108$

4 0

3 years ago