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3 years ago

Need help plz i will give u a brainliest

Mathematics

2 answers:

Tatiana [17]3 years ago

5 0

Answer:

x = -6

Step-by-step explanation:

let's call the number x.

"five less than"

[expression] - 5

"the quotient of a number and 3"

x/3

x/3 - 5

"is -7"

x/3 - 5 = -7

<em>add 5 to both sides of the equation</em>

x/3 - 5 + 5 = -7 + 5

x/3 = -2

<em>multiply both sides of the equation by 3</em>

x/3 * 3 = -2 * 3

x = -6

allsm [11]3 years ago

3 0

Answer:

X = number,

so the expression becomes X/5 - 14

Step-by-step explanation:

Explanation:

"Quotient" is the answer to a division.

Let's call the number

The quotient of a number (

) and

means

The quotient we have must be less than 4 , which is written

So,

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Determine whether the random variable described is discrete or continuous.

dlinn [17]

Answer:

discrete

Step-by-step explanation:

7 0

3 years ago

4x-5=2x+7 midpoint segmen

Bogdan [553]

Answer:

x = 6

Step-by-step explanation:

The way to solve this is by subtracting 2x from both sides. Now we have

2x-5=7

Then we add 5 from both sides. Now we have

2x=12

We do this because we want X by itself

Then we divide by 2 on both sides and now we have

x = 6

If you have any questions feel free to ask in the comments.

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4 years ago

The ratio of the lengths of the sides of △ABC is 2:3:4. Points M, N, and K are the midpoints of the sides. Perimeter of △MNK equ

laila [671]

Answer: Hence, the length of sides will be 3.2 in, 4.8 in., 6.4 in.

Explanation:

Since we have given that

Ratio of lengths of the sides of ΔABC is 2:3:4

So, the length of first side 'AB' be 2x

Length of second side 'BC' be 3x

Length of third side 'AC' be 4x

Now, we have given that M,N,K are the midpoints of the sides ,

As shown in the figure below:

As we know the Mid-point theorem which states that the line joining the midpoints is always parallel to the third side and half to the third side too.

So by applying this we get,

Length of MN is given by

$\frac{4x}{2}=2x$

Length of NK is given by

$\frac{2x}{2}=x$

Length of MK is given by

$\frac{3x}{2}=1.5x$

Also, we have given that perimeter of ΔMNK is 7.2 in.

So,

$MN+NK+MK=7.2\\x+2x+1.5x=7.2\\4.5x=7.2\\x=1.6$

So, the length of AB is given by

$2x=2\times 1.6=3.2\ in.$

Length of AC is given by

$3x=3\times 1.6=4.8\ in.$

Length of BC is given by

$4x=4\times 1.6=6.4\ in.$

Hence, the length of sides will be 3.2 in, 4.8 in., 6.4 in.

3 0

4 years ago

8+x=15 what is the missing number

Anni [7]

Answer:

Step-by-step explanation:

8+x=15 subtract 8 both sides

x = 7

7 0

3 years ago

On a certain exam, Tony corrected 20 papers and found the mean for his group to be 70. Alice corrected the remaining 10 papers

son4ous [18]

Answer:

The mean of the combined group is 76.67 ≈ 77

Step-by-step explanation:

The sum of the grades in Tom's group is 20×70 = 1400
The sum of grades in Alice's group is 10×90=900
The sum of gradees in the combined group is =1400+900=2300
Then the mean grade of the combined group is $\frac{2300}{30}=76.67$

where

2300 is the sum of the all grades in the combined group
30 is the total number of people in the group

4 0

3 years ago