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evablogger [386]
3 years ago
9

Apply the distributive property to -9(5j+k) create an equivalent expression.

Mathematics
1 answer:
frozen [14]3 years ago
3 0

Answer:

(-45j+-9k)

Step-by-step explanation:

-9 x 5j = -45j

-9 x k = -9k

(-45j+-9k)

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The mother's age is 8 times her son's age. After 6 years, the age of the mother will be 9/2 times her son's age. The present age
Sonja [21]

Answer:

s=6 years

m=48 years

Step-by-step explanation:

Let

Mother's age=m

Son's age=s

m=8*s

m=8s (1)

m+6=9/2(s+6)

m+6=9/2s+27 (2)

Substitute (1) into (2)

m+6=9/2(s)+27

8s+6=9/2s+27

8s+6-9/2s-27=0

8s-9/2s-21=0

(16-9/2)s-21=0

7/2s=21

s=21÷7/2

=21×2/7

=42/7

s=6

Present age of the son=6

m=8s

=8(6)

m=48

Present age of the mother=48

5 0
3 years ago
Circle the tens digit in each number 31, 94, 17,
Ludmilka [50]
You would circle the 3 in 31, the 9 in 94, and the 1 in 17
3 0
3 years ago
Read 2 more answers
2. Graph the function:<br> f(x) = -2/3x+1
Vikki [24]

Answer: Slope=-2/3

Step-by-step explanation:

3 0
3 years ago
Erik's disabled sailboat is floating at a stationary location 3 miles east and 3 miles north of Kingston. A ferry leaves Kingsto
irakobra [83]

Answer:

(a)6.82mph

(b)22 ft/sec

Step-by-step explanation:

Eric's Speed = 10 ft/sec

The Ferry's Speed = 15 miles per hour

<u>Conversion Unit</u>

  • 1 mile = 5280 feet
  • 1 hour = 3600 seconds

<u>Guide</u>

  • When converting from a smaller unit to a larger unit we divide
  • When converting from a larger unit to a smaller unit we multiply

(a)To convert Eric's Speed 10 ft/sec to miles per hour

\dfrac{10 \:ft}{seconds} =\dfrac{10 \div 5280 \:miles}{1 \div 3600\: hour} \\=6.82 miles \:per\: hour

(b)To convert the Ferry's Speed 15 mph to ft/sec

\dfrac{15 \:miles}{hour} =\dfrac{15 X 5280 \:foot}{1 X 3600\:seconds} \\=22 foot \:per\: seconds

3 0
3 years ago
Please help I will give brainliest<br><br><br> -5x+4y=7 y=-2x-8
katovenus [111]

x = 13, y = 18

hope this is right

3 0
3 years ago
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