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2 years ago

How many solutions are there to the equation below?

Mathematics

1 answer:

Elodia [21]2 years ago

3 0

Answer:

Đáp án B

Step-by-step explanat

B1:X ét VT=15x +35(1)

B2Xét VP thấy 15x +35 (2)

B3 KL

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VHelena has five different flowers. She plans to give one flower to each of her five teachers in any order. She gives the first

vitfil [10]

i'm pretty sure of this, if those are the four possible answers.

4 0

3 years ago

The shape of the distribution of the time required to get an oil change at a 10 minute oil change facility is unknown. However,

lyudmila [28]

Answer:

The answer is below

Step-by-step explanation:

a) For a normal model the sample size has to be equal or greater than 30 so that it can be a normal distribution.

b) Given that:

μ = 11.2 minutes, σ = 4.8 minutes, n = 45

The z score determines how many standard deviations the raw score is above or below the mean. It is given by:

$z=\frac{x-\mu}{\sigma} \\For\ a\ sample\ size(n)\\z=\frac{x-\mu}{\sigma/\sqrt{n} }$

For x < 10 minutes

$z=\frac{x-\mu}{\sigma/\sqrt{n} }\\\\ z=\frac{10-11.2}{4.8/\sqrt{45} }= -1.68$

Therefore from the normal distribution table, P(x < 10) = P(z < -1.68) = 0.0465

7 0

3 years ago

PLEASE HELP ME WILL GIVE BRAINLIEST TO CORRECT ANSWER

alex41 [277]

common difference, d = -3

f1 = -13

An arithmetic sequence f(n) = f1 + d(n - 1)

so f(n) = -13 - 3(n - 1)

f(46) = -13 - 3(46-1) = -13 -3(45) = -13 - 135 = -148

Answer:

f(46) = - 148

8 0

2 years ago

Read 2 more answers

What is 1/2=q+2/3<br> help

alexandr1967 [171]

Answer:

Step-by-step explanation:

1/6

7 0

2 years ago

What additional Information needed to prove the triangles are congruent by the SAS Postulate? Angle XWY cong angle ZWY; angle YX

marusya05 [52]

Answer:

WX = WZ

Step-by-step explanation:

Given

See attachment for triangles

Required

Additional information to prove the congruence of the triangles

Congruence by SAS means 1 angle and 2 sides of each triangles are equal.

The mark on angle W means that <XWY = <ZWY--- This represent the A in SAS

Both triangles share line WY.

So, WY = WY

Lastly, to complete the proof, lines WX must equal line WZ

6 0

2 years ago