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aliina [53]
3 years ago
12

What is the solution to the equation 9^-3x = 7? (1 point)

Mathematics
1 answer:
babymother [125]3 years ago
7 0

Answer:

take In of both sides or log of both sides

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4. Josh bought 5 pounds of peanuts for $15.55. What is the constant of proportionality that relates the cost, y, to the
prohojiy [21]
The answer is C. 3.11 because if you divide 15.55 divided by 5 you will get 3.11
3 0
3 years ago
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Joe and 3 friends ate lunch at a cafe. They decided to split the bill evenly. The total bill was $21.84. How much was each perso
pochemuha
$5.46

21.84 divided by 4 people gives you the answer
8 0
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X+2y + z = 4<br> 1. 4y - 3z = 1<br> y + 5z = 6
Feliz [49]

Answer:

The values of x = y = z = 1  

Step-by-step explanation:

Given three linear equation as ,

x + 2y + z = 4               .......a

     4y - 3z = 1               .......b

       y + 5z = 6             ........c

Now solve eq a and b first

   4y - 3z = 1   ×  5

    y + 5z = 6  ×  3

Or, 20y - 15z = 5

      3 y + 15z = 18

so ,(20y - 15) + (3y +15 ) = 5 +18

or,   23 y = 23  

∴           y = 1

Now put this y value in eq c

so , 1 + 5z = 6 ,

Or,       5z = 6-1 =5

∴            z = 1

Again put this y and z value in eq a

so, x + 2(1) + (1) = 4

Or,                x   = 4 -3

∴                   x = 1

Hence from the above solutions , the value of x = y =z = 1        Answer

4 0
3 years ago
78 round off to the nearest<br> ten
Alika [10]

Answer:

80

Step-by-step explanation:

6 0
3 years ago
Find the surface area of a right triangle prism with legs measuring 3 and 4 and a height of 10.
Hunter-Best [27]
Since we have a rectangle triangle, then we can find the other side of the triangle using the Pythagorean theorem.
 We have then:
 L =  \sqrt{3^2+4^2}
 L =  \sqrt{9+16}
 L =  \sqrt{25}
 L = 5
 Then the surface area is given by the sum of the areas.
 Triangle of the base and the top:
 A1 = (1/2) * (4) * (3)&#10;&#10;A1 = 6
 Rectangle 1:
 A2 = (3) * (10)&#10;&#10;A2 = 30
 Rectangle 2:
 A3 = (4) * (10)&#10;&#10;A3 = 40
 Rectangle 3:
 A4 = (5) * (10)&#10;&#10;A4 = 50
 Finally, the surface area is:
 A = 2A1 + A2 + A3 + A4&#10;
 Substituting values:
 A = 2 * (6) + 30 + 40 + 50&#10;&#10;A = 132
 Answer:
 
The surface area of a right triangle prism is:
 
B. 132
6 0
3 years ago
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