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3 years ago

8

Write and expression for five times a number decreased by eight

2 answers:

Juli2301 [7.4K]3 years ago

6 0

Answer:

5 x 10 - 8 = ?

Step-by-step explanation:

Brainliest please!

miv72 [106K]3 years ago

3 0

Answer:

5×17-8

Step-by-step explanation:

First you multiply 5 by 17 and then you subtract 8

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Divide: (5 + 4i) / (-3 – 2i)

Phantasy [73]

Answer:

<h2>-23/13 - 2/13i</h2>

Step-by-step explanation:

$\frac{5+4i}{-3-2i}\\\\\mathrm{Apply\:complex\:arithmetic\:rule}:\\\\\quad \frac{a+bi}{c+di}\:=\:\frac{\left(c-di\right)\left(a+bi\right)}{\left(c-di\right)\left(c+di\right)}\:=\:\frac{\left(ac+bd\right)+\left(bc-ad\right)i}{c^2+d^2}\\\\a=5,\:b=4,\:c=-3,\:d=-2\\\\=\frac{\left(5\left(-3\right)+4\left(-2\right)\right)+\left(4\left(-3\right)-5\left(-2\right)\right)i}{\left(-3\right)^2+\left(-2\right)^2}\\\\Refine\\=\frac{-23-2i}{13}\\\\$

$\mathrm{Rewrite\:}\frac{-23-2i}{13}\mathrm{\:in\:standard\:complex\:form:\:}-\frac{23}{13}-\frac{2}{13}i\\$

8 0

3 years ago

2. The sum of two consecutive numbers is equal to 3 times the first integer plus 7. Find the two integers. Answer:

Nataly_w [17]

Answer:

-9, -8

Step-by-step explanation:

x+(x+1)=7+3(x+1)

x+x+1=7+3(x+1)

2x+1=7+3(x+1)

2x+1=7+3x+3

2x+1=3x+10

2x+1-1=3x+10-1

2x-3x=3x-3x+9

-1x/-1=9/-1

x=-9/-8

3 0

3 years ago

Three consecutive even integers are such that the square of the third is 76 more than the square of the second. Find the three i

Arada [10]

Let n represent the interger l, the three consective intergers are represented by

$n$

$n + 2$

$n + 4$

The second one represent

$(n + 2) {}^{2} + 76 =( n + 4) {}^{2}$

Simplify both sides

$n {}^{2} + 4n + 4 + 76 = {n}^{2} + 8n + 16$

${n}^{2} + 4n + 4 = {n}^{2} + 8n - 60$

$4n + 4 = 8n - 60$

$4n + 64= 8n$

$64= 4n$

$n = 16$

The intergers are 16,18,20

6 0

3 years ago

How many different arrangements can be made from the letters

Ede4ka [16]

Answer:

Ohhhh

Step-by-step explanation:

5 0

4 years ago

If M(6,-2) is reflected across the line x = 3, then M' is (0,-2).

madam [21]

Answer:

False.

Step-by-step explanation:

If M(6, -2) were reflected across the line x = -3, then M' would be (0, -2) making the statement true.

6 0

3 years ago