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4 years ago

10.00-4.59=I think it's 6. something but I'm not exactly sure how to do the problem

Mathematics

2 answers:

Tomtit [17]4 years ago

5 0

10.00
-4.59
= 5.41
so 5.41 is your answer

Yuliya22 [10]4 years ago

3 0

10.00-4.59=6.59 you were close b6t its 6.59

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Solve using the quadratic formula 2x^2+8x-5=0

Ede4ka [16]

Step-by-step explanation:

Hey there!!

Given,

${x}^{2} + 8x - 5 = 0$

Comparing it with ax^2+bx+c =0 we get,

a= 1, b= 8, c= -5.

Using formula,

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

Keep all values,

$x = \frac{ - 8 + - \sqrt{ {8}^{2} - 4 \times 1 \times ( - 5)} }{2 \times 1}$

$x = \frac{ - 8 + - \sqrt{64 + 20} }{2}$

$x = \frac{ - 8 + - \sqrt{84} }{2}$

$x = \frac{ - 8 + - 2 \sqrt{21} }{2}$

Taking negative,

$x = \frac{ - 8 - 2 \sqrt{21} }{2}$

$x = \frac{ - 2(4 + \sqrt{21}) }{2}$

$x = 4 + \sqrt{21}$

Similarly, taking positive,

$x = \frac{ - 8 + 2 \sqrt{21} }{2}$

$x = \frac{ - 2(4 - \sqrt{21} ) }{2}$

$x = 4 - \sqrt{21}$

Therefore, x= (4 + root 21, 4 - root 21).

Hope it helps.....

3 0

3 years ago

Did I get it correct?

VikaD [51]

Answer:

No they are proprotional.

Step-by-step explanation:

the tables eqaution is

y=3x+1

7 0

3 years ago

Read 2 more answers

Find the vertex for y=3x^2-6x+5

Mkey [24]

The x value of the vertex in
ax^2+bx+c is -b/2a

y value is just sub for x

3x^2-6x+5
x value of vertex is -(-6)/(2*3)=6/6=1

sub back
y=3(1)^2-6(1)+5
y=3(1)-6+5
y=3-1
y=2

vertex is (1,2)

8 0

4 years ago

After driving 378 miles, they have used 14 gallons of gas. They have 243 miles left to drive on the trip. How much gas will they

dsp73

Answer:

9 gallon of gas

Step-by-step explanation:

When distance covered is 378 miles, they have used 14 gallons of gas

We need to find how much gas will they need to finish the trip if 243 miles left to drive on the trip.

378 miles = 14 gallons of gas

For 1 mile,

1 gallon of gas is used for $\dfrac{14}{378}\ \text{gallon of gas is used}$

For 243 miles,

$= \dfrac{14}{378}\times 243\ \text{miles}\\\\=9\ \text{gallon of gas is used}$

Hence, for 243 miles 9 gallon of gas is used.

6 0

3 years ago

A scale drawing has a scale of 1 inches = 10 feet. How long is a line on the drawing that represents an actual length of 47.5 fe

Airida [17]

Answer:

4.75 inches

Step-by-step explanation:

To find your answer you divide 47.5 by 10, as that is the scale rate

7 0

3 years ago