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kkurt [141]
3 years ago
7

Solve for x. Question 1* 21 - 3x = -7 – 10x = x = Your answer

Mathematics
1 answer:
NARA [144]3 years ago
6 0

Answer:

x = -4

Step-by-step explanation:

21 - 3x = -7 - 10x

7x = -28       (divide both sides by 7)

x = -4

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It would be a rectangle
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What is the vertex (x,y)? h(t)=2x^2+4x+7<br> PLS SHOW WORK
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Hack
for y=ax^2+bx+c
the xvalue of the vertex is -b/2a
and the y value is found by subsituting that for x

so

-b/2a

h(t)=2x^2+4x+7
a=2
b=4
-b/2a=-4/(2*2)=-4/4=-1
the y value
h(-1)=2(-1)^2+4(-1)+7
h(-1)=2(1)-4+7
h(1)=2+3
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3 years ago
Simplify the expression shown below: (a^3b^12c^2)^2(a^5c^2)^3(b^5c^4)^0
NemiM [27]
= a^21b^24c^10 
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A swimmer can do 4 laps in 2 minutes and 30 seconds how long does it take him to do one lap​
Shkiper50 [21]

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3 0
2 years ago
Read 2 more answers
Equation using the quadratic fromula for 0.05x^2 + 1.1x = 250
Anuta_ua [19.1K]

Answer:

x=60.56, x=-82.56

Step-by-step explanation:

Solve using quadratic formula

Formula is

x=\frac{-b+-\sqrt{b^2-4ac}}{2a}

0.05x^2 + 1.1x = 250

Subtract 250 on both sides

0.05x^2 + 1.1x - 250=0

a= 0.05, b=1.1 , c=-250

Plug in the values in the formula

x=\frac{-1.1+-\sqrt{(1.1)^2-4(0.05)(-250)}}{2(0.05)}

x=\frac{-1.1+-7.156116265}{0.1}

Now make two equations , one with +  and one with -

then we solve for x

x=\frac{-1.1+7.156116265}{0.1}

x=60.56

x=\frac{-1.1-7.156116265}{0.1}

x=-82.56


3 0
3 years ago
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