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hodyreva [135]
3 years ago
9

Rewrite the equations in the form ax^2+bx+c =0: -5x (x +6)=4(x-3) -10 4x^2-2x(3x+1)=5

Mathematics
1 answer:
Rainbow [258]3 years ago
4 0

Step-by-step explanation:

this is my answer...sorry if I made any mistake

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Recent research published by Frumin and colleagues (2011) in the journal Scienceaddresses whether females' tears have an effect
iogann1982 [59]

Answer: Option C.  [0.95, 1.59].

Step-by-step explanation:

We know that the mean is:

M = 1.27

and the margin of error is:

e = 0.32

This means that the actual value can be at a maximum distance of 0.32 from the mean.

then the interval will be:

[M - e, M + e].= [1.27 - 0.32, 1.27 + 0.32].= [0.95, 1.59].

The correct option is C.

3 0
4 years ago
The sampling method where every item in the population has an equal probability of being selected is called:
larisa86 [58]
With 'random sampling' every item in the population has an equal probability of being selected.
3 0
3 years ago
The surface area and volume of a sphere are in the ratio of 3:7cm.What is the circumference of its great circle and volume​
marishachu [46]

Answer:

Radius of sphere =1unit

SurfaceareaVolume=4πr234πr3=34π(1)3×4π(1)21=31

∴V:S=1:3 cm

Step-by-step explanation:

Hope this helps. If any questions, please ask in comments.

3 0
2 years ago
A rental car company charges $77. 50 per day to rent a car and $0. 14 for every mile
muminat

77.5d + .14m

m = 425

.14 * 425 = 59.5

77.5d + 59.5 ≤ 230

77.5d ≤ 170.5

d ≤ 170.5/77.5

d ≤ 2.2

if they only take payment for whole days, he has 2 whole days

6 0
2 years ago
Which dot plot shows a sample that is most representative of the number of pets in a household?
Dovator [93]

Answer:

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Step-by-step explanation:

6 0
3 years ago
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