3 years ago

What is the value of the expression? 3 131 3 152

Mathematics

1 answer:

Anettt [7]3 years ago

3 0

Is there suppose to be a image before I don’t get it.

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843 to the nearest 100

Ray Of Light [21]

It is 800 because the 4 can not tell the what to do so that it is

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3 years ago

Use the quadratic formula to solve the equation <br> X^2+9X+20=0

lions [1.4K]

Answer:

x=-4

x=-5

Step-by-step explanation:

6 0

3 years ago

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Please help me ASAP?!!

Blababa [14]

Answer:

(0,-5) and (-4,3)

Step-by-step explanation:

The given equations are

$\left \{ {{x^2+y^2=25} \atop {2x+y=-5}} \right.$

Make y the subject in the second equation;

$y=-2x-5$

Substitute into the first equation;

$x^2+(-2x-5)^2=25$

Expand:

$x^2+4x^2+20x+25=25$

$x^2+4x^2+20x+25-25=0$

$5x^2+20x=0$

$5x(x+4)=0$

$\Rightarrow x=0,x=-4$

When x=0,

$y=-2(0)-5=-5$

This gives; (0,-5)

When x=-4

$y=-2(-4)-5=3$

This gives (-4,3)

7 0

3 years ago

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-6 (X -7) +6 (X +5) = 73

AleksAgata [21]

Answer:

No Solution.

Step-by-step explanation:

-6(x-7)+6(x+5)=73

-6x+42+6x+30=73

72=73

no solution

4 0

3 years ago

Jim's car repair charges $50 plus $16 for every pint of oil. Sam's car repair charges $80 plus $14 for every pint of oil. At how

vova2212 [387]

Answer:

5 pints of oil for 8 dollars

Step-by-step explanation:

1.65 dollars for 1 pint

3.4/2=1.7 dollars for 1 pint

8/5=1.6 dollars for 1 pint

17.6/10=1.76 dollars for 1 pint

33/20=1.65 dollars for 1 pint

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3 years ago