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2 years ago

Can anyone answer part B?

Mathematics

1 answer:

balu736 [363]2 years ago

4 0

Answer:

(-3, 0) and (-1, 0)

Step-by-step explanation:

roots of the eqn = the x-intercepts (if any)

Topic: Quadratic Graphs.

If you would like to venture further, you can check out my Instagram page (learntionary) where I post notes and mathematics tips. Thanks!

You might be interested in

A penny and a nickel are tossed. Describe the sample space of the experiment.

Irina-Kira [14]

Sample space would be:

(H,H), (H,T), (T,T), (T,H)

Here I have used H for heads and T for Tails... first coin for penny second for nickel...ok

Did you understand???

5 0

3 years ago

1. Greg Forrester's charge account statement showed a previous balance 20 points

Slav-nsk [51]

Answer:

Option $152.19

Step-by-step explanation:

Data provided in the question:

Previous balance = $152.35

Finance charge = $1.78

New purchases of $45.23 and $15.67

Payment = $50.00

Credit = $12.84

Now,

New Balance

= [Previous balance + Finance charge + New purchases ] - [ Payments + Credits ]

= [ $152.35 + $1.78 + ($45.23 + $15.67) ] - [$50.00 + $12.84 ]

= $215.03 - $62.84

= $152.19

Hence,

Option $152.19

3 0

2 years ago

What is the difference of the two expressions shown below (3/4X+2)-(1/4x+5). Explain why

Nostrana [21]

Answer:

D. 1/2x - 3

Step-by-step explanation:

(3/4x + 2) - (1/4x + 5) =
3/4x - 1/4x + 2 - 5 =
2/4x - 3 =
1/2x - 3

Correct choice is D

5 0

2 years ago

F(x) = -x^2 + 5x – 2 Find f(-4)

disa [49]

Answer:

Step-by-step explanation:

if f(4), than -4^2=-16

5(4)=20

-16+20-2=2

8 0

2 years ago

A random sample of 121 automobiles traveling on an interstate showed an average speed of 65 mph. From past information, it is kn

loris [4]

Answer:

95 percent confidence interval for μ is determined by

(60.688 , 69.312)

a) be the same

Step-by-step explanation:

Step (i):-

Given data a random sample of 121 automobiles traveling on an interstate showed an average speed of 65 mph.

The sample size is n= 121

The mean of the sample x⁻ = 65mph.

The standard deviation of the population is 22 mph

σ = 22mph

Step (ii) :-

Given The 95 percent confidence interval for μ is determined as

(61.08, 68.92)

we are to reduce the sample size to 100 (other factors remain unchanged) so

given The sample size is n= 100

The mean of the sample x⁻ = 65mph.

The standard deviation of the population is 22 mph

σ = 22mph

Step (iii):-

95 percent confidence interval for μ is determined by

$(x^{-} - 1.96\frac{S.D}{\sqrt{n} } , x^{-} + 1.96 \frac{S.D}{\sqrt{n} } )$

$(65 - 1.96\frac{22}{\sqrt{100} } , 65 + 1.96 \frac{22}{\sqrt{100} } )$

(65 - 4.312 ,65 +4.312)

(60.688 , 69.312) ≅(61 ,69)

This is similar to (61.08, 68.92) ≅(61 ,69)

Conclusion:-

it become same as (61.08, 68.92)

4 0

3 years ago