All categories

2 years ago

Find the midpiont between y and 31 is -5 find y

Mathematics

2 answers:

LenKa [72]2 years ago

5 0

Answer:

y=-41

Step-by-step explanation:

$\frac{y+31}{2} =-5\\y+31=-5 \times 2\\y+31=-10\\y=-10-31\\y=-41$

SCORPION-xisa [38]2 years ago

5 0

Y=41 would be your correct answer.

You might be interested in

What is the value of x?

Tresset [83]

Answer:

i think its 8

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

‎‎‎‎‎‎‎ ‎ ‎ ‎‎‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎

RUDIKE [14]

Answer:

Step-by-step explanation:

I put it in my calculator

3 0

3 years ago

Read 2 more answers

What are the values for matrix A?: 1 2 3 4 1 3 4 5 6 7 8 Noo 4 1 0 0 9 6 7 8 10 12 14 15 16 13 14 14 15 16

Gala2k [10]

Since the values are the same on both sides the matrix value is a=1

7 0

3 years ago

Can you see an easy way to work out the value of <img src="https://tex.z-dn.net/?f=%5Csqrt%7B%201%5E3%20%2B%202%5E3%20%2B%203%5E

Lina20 [59]

We have the sum of cubes identity

$a^3 + b^3 = (a + b) (a^2 - ab + b^2)$

and observing that 1 + 4 = 2 + 3, we have

$1^3 + 4^3 = (1 + 4) (1^2 - 4 + 4^2) = 5 \times 13$

and

$2^3 + 3^3 = (2 + 3) (2^2 - 6 + 3^2) = 5 \times 7$

Then

$\sqrt{1^3+2^3+3^3+4^3+5^3} = \sqrt{5\times13 + 5\times7 + 5\times5^2} = \sqrt{5 \times (20 + 25)} \\\\ ~~~~~~~~ = \sqrt{5^2 \times (4 + 5)} = \sqrt{5^2\times9} = \sqrt{5^2\times3^2} = 5\times3 = \boxed{15}$

Alternatively, we have the well-known sum of cubes formula

$\displaystyle \sum_{i=1}^n i^3 = \frac{n^2(n+1)^2}4$

The sum under the square root is this sum with $n=5$ . Then

$1^3+2^3+3^3+4^3+5^3 = \dfrac{5^2\times6^2}4 = 225 = 15^2$

and so the square root again reduces to 15.

5 0

2 years ago

In the following equation, f(x)=2x +7, what is f(-3)?

Helen [10]

Answer:

f(-3) = 1

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

Function Notation

Step-by-step explanation:

Step 1: Define

f(x) = 2x + 7

f(-3) is x = -3

Step 2: Evaluate

Substitute: f(-3) = 2(-3) + 7
Multiply: f(-3) = -6 + 7
Add: f(-3) = 1

5 0

3 years ago