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Anna [14]
3 years ago
8

7(x+4)+1x-9*2= -8x+-10 Please show steps

Mathematics
2 answers:
MakcuM [25]3 years ago
8 0

Answer:

<em>-5/4</em>

Step-by-step explanation:

7(x + 4) + 1x - 9 * 2 = -8x + -10

Distribute 7 on left side. Multiply 9 * 2 on left side.

7x + 28 + 1x - 18 = -8x + -10

Combine like terms on left side.

8x + 10 = -8x + -10

Add 8x to both sides. Subtract 10 from both sides.

16x = -20

Divide both sides by 16.

x = -20/16

Reduce the fraction.

x = -5/4

tatyana61 [14]3 years ago
3 0

Answer:


Step-by-step explanation:

7(x+4)+1x-9*2=-8x+-10      first remove parenthesis

7x+28+x-9*2=-8x-10          then do the multiplication

7x+28+x-18=-8x-10           now combine like terms

8x+10=-8x-10                     add 8x to both sides

16x+10=-10                         subtract 10 from both sides

16x=-20                             divide by 16 on both sides

x=   -20/16

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3 years ago
Three friends got jobs at stores in the mall. Nina earns $117.60 for hours 14 of work. Ty earns for $148.50 hours 18 of work. Ki
marysya [2.9K]

Answer:

Kim has the highest pay rate in dollars per hour

Step-by-step explanation:

we know that

To find out the unit pay rate divide the total earning by the total time

so

Nina earns $117.60 for hours 14 of work

\frac{117.60}{14}=\$8.4\ per\ hour

Ty earns for $148.50 hours 18 of work

\frac{148.50}{18}=\$8.25\ per\ hour

Kim earns for $137.60 hours 16 of work

\frac{137.60}{16}=\$8.60\ per\ hour

8.6 > 8.4 > 8.25

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Kim has the highest pay rate in dollars per hour

6 0
3 years ago
Write the sum or difference in the standard form a + bi.
REY [17]

Answer:

Sum = 13+ 4i            Difference = -5 - 8i

Step-by-step explanation:

Given complex number as (4 -2i)  and  (9 + 6i)

Sum of these complex number is

(4 -2i)  + (9 + 6i) = ( 4 +9) + (6i -2i)

                           = 13 +4i

Difference of these complex number is

(4 -2i)  - (9 + 6i) = (4 -9) - (2i +6i)

                        = -5 - 8i

Hence the sum and Difference of given complex numbers are

Sum = 13+ 4i            Difference = -5 - 8i              Answer

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