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3 years ago

How many times greater is 9×10³ than 4×10²

Mathematics

1 answer:

Dima020 [189]3 years ago

5 0

Answer: ^^7 (76-87 x 834 =876*#+9647) - 974 (0 +142 = (8x 17/906385) )

Step-by-step explanation:

you are to nt9 smart to answer this question

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5(-12x+3)+6(10x+7)=9-x+3x+10

tia_tia [17]

Answer: x = 19

Step-by-step explanation:

5(-12x+3) + 6(10x + 7) = 9 - x + 3x + 10 Distribute on the left side

-60x + 15 + 60x + 42 = 9 + 2x + 10 combine like terms on the left side

57 = 9 + 2x + 10 Now combine like terms on the right side

57 = 2x + 19 Subtract 19 from both sides

-19 -19

38 = 2x Divide both sides by 2

x = 19

8 0

3 years ago

If m∠UNR = 180° find m∠RNS A. 27° B. 34° C. 59° D. 94°

LenaWriter [7]

Answer:

Option A) m∠RNS=27°

Step-by-step explanation:

We know that $m$ ∠UNR = 180°. This tells us that the Sum of the enclosed angles should equal 180°, by trigonometry. So the enclosed angles are:

$m$ ∠RNS = $(3x+6)^{o}$

$m$ ∠SNT= $(13x+3)^{o}$

$m$ ∠TNU= $(10x-11)^{o}$

Now let us add all the angles and solve for the value of $x$ as follow:

$m_{RSN}+m_{SNT}+m_{TNU}=m_{UNR}\\\\(3x+6)+(13x+3)+(10x-11)=180\\\\3x+13x+10x+6+3-11=180\\\\26x-2=180\\\\26x=180+2\\\\26x=182\\\\$

$x=\frac{182}{26} \\\\x=7$

Now lets plug in the value into the expression for angle $m$ ∠RNS to find the angle as:

$RNS = (3x+6)^{o}\\\\RNS=(3(7)+6)^{o}\\\\RNS=(21+6)^{o}\\\\RNS=27^{o}$

Thus Option A. is the correct answer.

7 0

3 years ago

Y=-3x+5 5x - 4y= -3 solvining systems of equations by substitution

andreyandreev [35.5K]

$\left\{\begin{array}{ccc}y=-3x+5\\5x-4y=-3\end{array}\right\\\\\\substitute\\\\5x-4(-3x+5)=-3\\5x+12x-20=-3\\17x-20=-3\\17x=-3+20\\17x=17\ \ \ \ /:17\\x=1\\\\y=-3\cdot1+5=-3+5=2\\\\ \left\{\begin{array}{ccc}x=1\\y=2\end{array}\right$

4 0

3 years ago

Write 2/15 as a decimal.

Cloud [144]

If you need to write a number as a decimal, it means that you need to write is a an x divided by a power of 10.
you can use this formula:
$\frac{2}{15} = \frac{x}{10}$

now let's multiply both sides by 10:
$\frac{20}{15} = x$
and simplyfy:
(by dividing the first fraction's elements by 5)
$\frac{4}{3} = x$

change improper fraction into a mixed number
$1\frac{1}{3} = x$

and 1 over 3 is 0.33333...

so the answer is 1.333333 - we can also write it as 1.(3)

5 0

3 years ago

Missing fraction blank + 1/16 = 3/2

skad [1K]

Answer: 1/2

Step-by-step explanation:

Let the missing fraction be x

x + 1/16 = 3/2

Make x the subject by subtracting both sides by 1/16

x = 3/2 - 1/16

x= 24 - 16/16

= 8/16; divide through by a common value of 8

x = 1/2

I hope this helps.

4 0

3 years ago