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grandymaker [24]

3 years ago

8

Without solving, identify whether each of the following equations has a unique solution, no solution, or infinitely many solutio

ns.
3.2 + 6 = -8
0 1 solution
O No Solution
O Infinite solutions

1 answer:

Luden [163]3 years ago

7 0

Answer:

No solution

Step-by-step explanation:

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Jessica and Mike are making presentations for a class project. Jessica's slideshow starts with a verbal introduction that is 16

uysha [10]

Answer:

they both has 7 slides and the presentation had a duration of 28 seconds

Step-by-step explanation:

we have to setup equation that makes them equal to each other if you know what i mean. 2x+16=3x+10

then we just solve for x

2x+16=3x+10

subtract 10 from each side

2x+6=3x

step 2 subtract 2x from each side

x=6

so both of their presentations are 7 slides long

then to find the length of their presentations we just plug in 6 to one of the equations

2(6)+16

2x6=12 12+16=28 so both of their presentations were 28 seconds

6 0

3 years ago

Are these triangles congruent? If so, state the rule which you used to determine congruence

Zepler [3.9K]

Answer:

not necessarily confident cuz simply it doesn't look same size it should be similar

3 0

3 years ago

Write the equation of the line that is perpendicular to y = -5x + 1 and passes through the point (2,-1). slope intercept equatio

motikmotik

Answer:

$y = \frac{1}{5} x - \frac{7}{5}$

Step-by-step explanation:

Look at graph above⤴⤴⤴

Hope this helps :)

8 0

3 years ago

In the year 2000, a person bought a new car for $16500. For each consecutive year after that, the value of the car depreciated b

hodyreva [135]

Answer: 13100

Step-by-step explanation:

6 0

3 years ago

Assume a standard deviation of LaTeX: \sigma = 0.75σ = 0.75. You plan to take a random sample of 110 households, what is the pro

olchik [2.2K]

Answer:

P(2.50 < Xbar < 2.66) = 0.046

Step-by-step explanation:

We are given that Population Mean, $\mu$ = 2.58 and Standard deviation, $\sigma$ = 0.75

Also, a random sample (n) of 110 households is taken.

Let Xbar = sample mean household size

The z score probability distribution for sample mean is give by;

Z = $\frac{Xbar-\mu}{\frac{\sigma}{\sqrt{n} } }$ ~ N(0,1)

So, probability that the sample mean household size is between 2.50 and 2.66 people = P(2.50 < Xbar < 2.66)

P(2.50 < Xbar < 2.66) = P(Xbar < 2.66) - P(Xbar $\leq$ 2.50)

P(Xbar < 2.66) = P( $\frac{Xbar-\mu}{\frac{\sigma}{\sqrt{n} } }$ < $\frac{2.66-2.78}{\frac{0.75}{\sqrt{110} } }$ ) = P(Z < -1.68) = 1 - P(Z $\leq$ 1.68)

= 1 - 0.95352 = 0.04648

P(Xbar $\leq$ 2.50) = P( $\frac{Xbar-\mu}{\frac{\sigma}{\sqrt{n} } }$ $\leq$ $\frac{2.50-2.78}{\frac{0.75}{\sqrt{110} } }$ ) = P(Z $\leq$ -3.92) = 1 - P(Z < 3.92)

= 1 - 0.99996 = 0.00004

Therefore, P(2.50 < Xbar < 2.66) = 0.04648 - 0.00004 = 0.046

3 0

3 years ago