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Dafna11 [192]
3 years ago
12

7(2а - 3) - 5a = -3 please show the work

Mathematics
1 answer:
Otrada [13]3 years ago
4 0

Answer:

a = 2

Step-by-step explanation:

14a - 21 - 5a = -3

9a - 21 = -3

9a = -3 + 21

9a = 18

a = 2

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A lot with a depth of 80 feet and an area of 4,800 square feet was sold for $350 per front foot. What was the total sales price?
stepladder [879]

Answer:

total sales price =  $21,000

Step-by-step explanation:

given data

depth = 80 feet

area = 4,800 square feet

sold = $350 per front foot

to find out

total sales price

solution

first we get here front feet that is the front length of a parcel

front feet  = \frac{area}{depth}   ...................1

front feet  = \frac{4800}{80}

front feet  = 60

so total sales price will be

total sales price = 60 × $350 per front foot

total sales price =  $21,000

4 0
3 years ago
Someone plz help! Photo Above
TiliK225 [7]

Answer:

  • -704

Step-by-step explanation:

<u>Given the sequence</u>

  • A = -4 - 6i

<u>To find </u>

  • Sum of terms from i=5 to i=15
<h3>Solution</h3>

We see the sequence is AP

<u>The required sum is</u>

  • S₅₋₁₅ = S₁₅ - S₄

<u>Using sum of AP formula</u>

  • Sₙ = 1/2n(i₁ + iₙ)

<u>Finding the required terms</u>

  • i₁ = - 4- 6 = -10
  • i₄ = -4 -6*4 = - 28
  • i₁₅ = -4 -6*15 = -94

<u>Getting the sum</u>

  • S₄ = 1/2*4*(-10 - 28) = -76
  • S₁₅ = 1/2*15*(-10 - 94) = -780
  • S₅₋₁₅ = S₁₅ - S₄ = -780 - (-76) = - 704
4 0
3 years ago
3(4x+1)=15? X=<br> What is the solution?
tensa zangetsu [6.8K]

Answer:

x=1

Step-by-step explanation:

3(4x+1)=15

12x+3=15

12x=15-3

12x=12

x=12/12

x=1

3 0
3 years ago
If 50 percent of x=66 then x =
sasho [114]

Answer:

132

Step-by-step explanation:

50 % means half

so 66 is half of whatever x is.

to find x you have to multiply 66 by 2 or add 66 to 66 which will give you 132 either way.

<em>Hope this helps you! have an amazing day :)</em>

7 0
3 years ago
Read 2 more answers
What is 6(x+3)=2(2x+5)
koban [17]

Answer:

x = -4 ;

Step-by-step explanation:

6(x+3)=2(2x+5)

Distribution

6x+18 = 4x + 10

Subtract 4x on both sides

2x+18 = 10

Subtract 18 on both sides

2x = -8

Divided by 2

x = -4

Now if we have to substitute the value of X

6(-4+3)=2(-8+5)

Parenthesis first

6(-1) = 2(-3)

-6 = -6

7 0
3 years ago
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