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4 years ago

5

Estimate, and then compute. Explain how you know your result is reasonable please do it quick!

2 answers:

AnnyKZ [126]4 years ago

4 0

It is 4 9/10 ounces. you would give the 2 numbers common denominators, which would be 10. You could estimate it to 5 ounces.

Alisiya [41]4 years ago

4 0

First you need to change them to improper fractions.
3 1/2 + 1 2/5
3x2=6+1= 7/2 now do same for 1 2/5 5x1=5+2=7/5 now find LCD for both fractions which is 10 so now the fractions become 35/10 + 14/10=add 35+14=49/10 now divide to turn back into a mixed number 4 9/10 is your answer

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Determine between which consecutive integers the real zeros of f(x) = x2 – 3x + 1 are located.

Trava [24]

Answer:

a) between -1&0, 0&1 and 2&3

Step-by-step explanation:

Solving a quadratic equation:

Given a second order polynomial expressed by the following equation:

$ax^{2} + bx + c, a\neq0$ .

This polynomial has roots $x_{1}, x_{2}$ such that $ax^{2} + bx + c = a(x - x_{1})*(x - x_{2})$ , given by the following formulas:

$x_{1} = \frac{-b + \sqrt{\bigtriangleup}}{2*a}$

$x_{2} = \frac{-b - \sqrt{\bigtriangleup}}{2*a}$

$\bigtriangleup = b^{2} - 4ac$

In this question:

$f(x) = x^{2} - 3x + 1$

So

$\bigtriangleup = (-3)^{2} - 4*1*1 = 5$

$x_{1} = \frac{-(-3) + \sqrt{5}}{2*1} = 2.62$

$x_{2} = \frac{-(-3) - \sqrt{5}}{2*1} = 0.38$

2.62 is between 2 and 3.

0.38 is between 0 and 1.

So the correct answer is:

a) between -1&0, 0&1 and 2&3

4 0

3 years ago

Read 2 more answers

After putting $5,500 as a down payment on a car, you pay $400 per month for 60 months to pay off your car. What was the total yo

Y_Kistochka [10]

Answer:

$29500

Step-by-step explanation:

Given data

The number of months is 60

the downpayment is $5,500

the monthly payment is $400

Let the function for the total payment be given as

y=mx+c

y= 400(60)+5500

y=24000+5500

y= 29500

Hence the total paid for the car is $29500

7 0

3 years ago

Given: m∠1 = 62° Line l is parallel to line m Prove: m∠7 = 118°

svetoff [14.1K]

you don't show the diagram, but 2 adjacent angles = 180

so 180-62 = 118

4 0

4 years ago

Does anyone know the answer to this question?

aliya0001 [1]

Answer:

no sorry

Exanation:

5 0

3 years ago

E is between D and F. DE = 4x + 2, EF = 3x, and DF = 16.

iragen [17]

Answer:

x=2

Step-by-step explanation:

DE=4x+2, EF=3x, and DF=16

DE=4(2)+2, EF=3(2), and DF=16

DE=10, EF=6, and DF=16

4 0

4 years ago