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Novosadov [1.4K]
3 years ago
13

Solve for x 7 x + 15 equals 38

Mathematics
2 answers:
Whitepunk [10]3 years ago
8 0

Answer:

3 2/7

Step-by-step explanation:

7x + 15 = 38

subtract 15 from both sides

7x = 23

divide by 7 on both sides

23 ÷ 7

x = 3.28 or 3 2/7

hope this helped ! :)

Galina-37 [17]3 years ago
6 0

Answer:

x = 23/7

Step-by-step explanation:

7 x + 15 equals 38

7x+15 = 38

Subtract 15 from each side

7x+15-15 = 38-15

7x = 23

Divide each side by 7

7x/7 = 23/7

x = 23/7

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amid [387]

The first one:

1.1x+1.4y=360;

1.2(x+y)=360;

The second one:

x+y=800;

0.2x+0.04y=800*0.15

3 0
3 years ago
A store is having a sale where movies are 15% off their original price a movie is sale for $22.10 what was the original price of
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The original price of the movie would be $26. Hope this helps!
6 0
3 years ago
You want to buy birthday hats, cards, and teddy bears for your best friends birthday party. You buy the products for wholesale p
Naya [18.7K]

Answer:

I will create a five by four matrix to indicate the costs of the products.  The matrix will have five vertical columns and four horizontal rolls.  The vertical columns will show the product categories and the total costs for all the products and decorations.  The horizontal rolls will show the product costs, the decoration costs, and the total costs for each product category.

The size and shape of the matrix will be 5 by 4 with squared boxes.

Step-by-step explanation:

Products/Costs         Hats         Cards      Teddy    Total Costs

Product costs           $2.50       $0.90       $3.10        $6.50

Decoration costs      $1.50       $0.60        $1.70        $3.80

Total costs               $4.00        $1.50       $4.80       $10.30

6 0
3 years ago
What is the solution to log (9x)-log 3 = 3?
xeze [42]

Answer:

The solution x = \frac{e^{3} }{3}

Step-by-step explanation:

<u>Step 1</u>:-

Given log(9 x) -log 3 =3

we have to use formula  log a-log b=log\frac{a}{b}

log(9 x)- log 3 = log(\frac{9 x}{3} ) =3

Again by using formula log a =b

                                       a = e^{b}

so \frac{9 x}{3} =e^{3}

<u>step 2:</u>-

   3 x = e^{3}

  x = \frac{e^{3} }{3}

The solution of given problem is x=\frac{e^3}{3}

5 0
3 years ago
Leona spends £465 on a plane ticket and €75 on airport tax. Using £1 = €1.13, what percentage of the total cost does Leona spend
Vilka [71]

Answer:

14.3%

Step-by-step explanation:

£465= 465*1.13€= 525.45€

75/525.45*100=14.3%

7 0
3 years ago
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