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True [87]
3 years ago
15

Does anyone know the answer to this math question please help

Mathematics
1 answer:
ivann1987 [24]3 years ago
3 0

Answer:

y= − 5 x ^2 − 40 x − 78

Step-by-step explanation:

Write in standard form.

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Multiply. 0.72*10^2=
velikii [3]

Answer: The Answer is 72 or 7.2x10^1

This is due to 10^2 equaling 100. 100x0.72 is 72 bec you are moving the decimal point 2 to the right.

8 0
3 years ago
Solve this system by elimination. <br> 3x+4y=5<br> -5x-4y=-11
ehidna [41]
 3x + 4y = 5
<u>-5x - 4y = -11</u>
       -2x = -6
       -<u>2x</u> = <u>-6</u>
        -2     -2
          x = 3
3(3) + 4y = 5
    9 + 4y = 5
<u>   -9          -9</u>
         4y = -4
         <u>4y</u> = <u>-4</u>
          4      4
           y = -1
     (x, y) = (3, -1)
3 0
4 years ago
Read 2 more answers
A mountain climber started at zero elevation. The first day he hiked 10 miles up
Mandarinka [93]

Answer:

14 miles if that's how far he went up

17miles if you're calculating his distance covered

4 0
2 years ago
Find the value of the variable in the parallelogram.<br><br> RZ = 4x + 2<br> SW=9x - 8<br><br> X=
ipn [44]

Answer:

x=12

Step-by-step explanation:

This parallelogram contains a right angle. This tells us that the parallelogram is a rectangle.

The diagonals in a parralelogram bisect each other.

The diagonals in a rectangle are congruent.

RZ+ZT=RT\\(4x+2)+(4x+2)=RT\\8x+4=RT

RT=SW\\8x+4=9x-8\\4=x-8\\x=12

8 0
3 years ago
3/5 + 4/15 = in simply
maksim [4K]
You have to get a common denominator so

3 x 3 = 9
5 x 3 = 15

So now we have 9/15 + 4/15 which is 13/15.

The answer is 13/15
7 0
3 years ago
Read 2 more answers
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