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3 years ago

How many solutions does lx+7l=-1

Mathematics

1 answer:

e-lub [12.9K]3 years ago

6 0

Answer:

No solution

Step-by-step explanation:

An absolute value equation cannot equal a negative number.

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Please i need help fast

Lubov Fominskaja [6]

Answer:

15 a. It is not a rectangle bc the sides of a rectangle are always the same.

b. It is a right triangle bc on D it is 90 degrees.

c. It is not an isosceles triangle bc an isosceles triangle's base is always even but the one in the picture is not

Step-by-step explanation:

5 0

3 years ago

9,648 in standard form

AlekseyPX

9x100

i hope i helped

6 0

3 years ago

Find the measure of each of the angles. Don’t forget to label your answer

user100 [1]

Answer:

$a=125^o$

$b=55^o$

$c=55^o$

$d=55^o$

$e=125^o$

$f=55^o$

Step-by-step explanation:

step 1

Find the value of x

we know that

$(2x+25)^o=(x+75)^o$ ----> by alternate interior angles

solve for x

Group terms

$2x-x=75-25$

$x=50$

step 2

Find the measure of angle a

we know that

$a=(x+75)^o$ ----> by vertical angles

substitute the value of x

$a=(50+75)=125^o$

step 3

Find the measure of angle b

we know that

$a+b=180^o$ ----> by supplementary angles (form a linear pair)

we have

$a=125^o$

substitute

$125^o+b=180^o$

$b=180^o-125^o=55^o$

step 4

Find the measure of angle c

we know that

$c=b$ ----> by vertical angles

we have

$b=55^o$

therefore

$c=55^o$

step 5

Find the measure of angle d

we know that

$d=b$ ----> by corresponding angles

we have

$b=55^o$

therefore

$d=55^o$

step 6

Find the measure of angle e

we know that

$e=a$ ----> by alternate exterior angles

we have

$a=125^o$

therefore

$e=125^o$

step 7

Find the measure of angle f

we know that

$f=d$ ----> by vertical angles

we have

$d=55^o$

therefore

$f=55^o$

4 0

3 years ago

What is the answer to 4/5 + 5/12

alina1380 [7]

Answer:

Step-by-step explanation:

7 0

3 years ago

Tests scores for a statistics class have a mean of 82 and standard deviation of 2. A histogram shows a non-normal distribution.

Irina18 [472]

Answer:

k=4

Step-by-step explanation:

The empirical rule is only applicable on normal distribution while Chebyshev’s theorem is applicable to all type of distribution.

Chebyshev’s theorem states that at least 1-1/k² of data lies within μ±kσ interval.

We have to find the value of k for interval (74,90).

We are given that mean=μ=82 and standard deviation=σ=2

μ-kσ=74

82-k*2=74

82-74=2k

8/2=k

k=4.

μ+kσ=90

82+k*2=90

2k=90-82

2k=8

k=8/2

k=4.

Thus, for k=4 for the interval between 74 and 90 scores.

4 0

4 years ago