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4 years ago

How many solutions does the equation |x+7|= -1 have?

Mathematics

1 answer:

KonstantinChe [14]4 years ago

6 0

None.

The absolute value of something cannot be <em>negative</em>.

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PLS SOMEONE HELP ME PLS WITH GEOMETRY

nikklg [1K]

Answer:

They are congruent by SAS

Step-by-step explanation:

MQ=PN

The angles with markings also go together

The line right in the middle is the second side because of the reflexive property

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2 years ago

Every week i eat 10 waffles and drink 5 cups of milk .Which ratio is equivalent to the waffled.i eat to the milk i drink

Semenov [28]

Answer:

2:1

Step-by-step explanation:

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3 years ago

Read 2 more answers

PLEASE HELP ASAP ILL MARK BRAINLIEST

Reptile [31]

Answer: $4\sqrt{3}-\sqrt{5}$

Step by step:

$2\sqrt{5}+4\sqrt{3}-3\sqrt{5}=4\sqrt{3}-\sqrt{5}$ This is the simplest form of this radical.

3 0

3 years ago

What ia the answer to this equation 51 + 3j =129

marta [7]

Answer:

j = 26

Step-by-step explanation:

129 - 51 = 78

78 ÷ 3 = 26

Your answer is j = 26

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3 years ago

Read 2 more answers

Recent census data indicated that 14.2% of adults between the ages of 25 and 34 live with their parents. A random sample of 125

kicyunya [14]

Answer:

The probability is $P(14 < X < 20 ) = 0.5354$

Step-by-step explanation:

From the question we are told that

The proportion that live with their parents is $\r p = 0.142$

The sample size is n = 125

Given that there are two possible outcomes and that this outcomes are independent of each other then we can say the Recent census data follows a Binomial distribution

i.e

$X \ \~ \ B( \mu , \sigma )$

Now the mean is evaluated as

$\mu = n * \r p$

$\mu = 125 * 0.142$

$\mu = 17.75$

Generally the proportion that are not staying with parents is

$\r q = 1 - \r p$

= > $\r q = 0.858$

The standard deviation is mathematically evaluated as

$\sigma = \sqrt{n * \r p * \r q }$

$\sigma = \sqrt{ 125 * 0.142 * 0.858 }$

$\sigma = 3.90$

Given the n is large then we can use normal approximation to evaluate the probability as follows

$P(14 < X < 20 ) = P( \frac{ 14 - 17.75}{3.90}$

Now applying continuity correction

$P(14 < X < 20 ) = P( \frac{ 13.5 - 17.75}{3.90} < \frac{ X - \mu }{\sigma } < \frac{ 19.5 - 17.75}{3.90} )$

Generally

$\frac{ X - \mu }{\sigma } = Z ( The \ standardized \ value \ of X )$

$P(14 < X < 20 ) = P( \frac{ 13.5 - 17.75}{3.90} < Z< \frac{ 19.5 - 17.75}{3.90} )$

$P(14 < X < 20 ) = P( -1.0897 < Z< 0.449 } )$

$P(14 < X < 20 ) = P( Z< 0.449 ) - P(Z < -1.0897)$

So for the z - table

$P( Z< 0.449 ) = 0.67328$

$P(Z < -1.0897) = 0.13792$

$P(14 < X < 20 ) = 0.67328 - 0.13792$

$P(14 < X < 20 ) = 0.5354$

6 0

3 years ago