All categories

2 years ago

Help me understand this pls

Mathematics

1 answer:

wolverine [178]2 years ago

6 0

Step-by-step explanation:

14)

Simplifying

3m + 5 = 4m -10

Reorder the terms:

5 + 3m = 4m -10

Reorder the terms:

5 + 3m = -10 + 4m

Solving

5 + 3m = -10 + 4m

Solving for variable 'm'.

Move all terms containing m to the left, all other terms to the right.

Add '-4m' to each side of the equation.

5 + 3m + -4m = -10 + 4m + -4m

Combine like terms: 3m + -4m = -1m

5 + -1m = -10 + 4m + -4m

Combine like terms: 4m + -4m = 0

5 + -1m = -10 + 0

5 + -1m = -10

Add '-5' to each side of the equation.

5 + -5 + -1m = -10 + -5

Combine like terms: 5 + -5 = 0

0 + -1m = -10 + -5

-1m = -10 + -5

Combine like terms: -10 + -5 = -15

-1m = -15

Divide each side by '-1'.

m = 15

Simplifying

m = 15

(thank to <em>geteasysolution</em> . com

15)

xy+yz=xz

a+a+8=50

2a=42

a=21

a+8=29

You might be interested in

Subtract:30.008 - 23.17.<br> a. 5.229<br> b. 7.543<br> c. 27.691<br> d. 6.838

Virty [35]

D.
30.008 - 23.17 = 6.838

8 0

2 years ago

The quotient of (x4 + 5x3 – 3x – 15) and a polynomial is (x3 – 3). What is the polynomial?

solmaris [256]

Answer:

Dividend

$=x^4 + 5 x^3 - 3 x - 15$

Divisor

$=x^3-3$

The rule of division of polynomial which is same as division of real numbers states that

Dividend = Divisor × Quotient + Remainder

The division process is shown below.

Quotient = x+5

Remainder =0

3 0

2 years ago

Read 2 more answers

How to divide 4.48 ÷7

Rina8888 [55]

Answer:

Step-by-step explanation:

4.48/7

7 into 4 (0 times)

Bring next number down 4.48 ⬇️

7 into 44 (6 times, 2 left over)

Bring next number down 4.48 ⬇️

7 into 28 (4 times)

Answer 0.64

I'm always happy to help :)

5 0

2 years ago

Read 2 more answers

Old McDonald has some chickens and some cows. He counted 56 heads and 116 legs. How many chickens and how many cows does old McD

Elza [17]

Answer: old McDonald has 54 chickens and 2 cows.

Step-by-step explanation:

Let x represent the number of chickens that old McDonald have.

Let y represent the number of cows that old McDonald have.

He counted 56 heads. A chicken and a cow has one head each. It means that

x + y = 56

He counted 116 legs. A chicken has 2 legs and a cow has 4 legs. It means that

2x + 4y = 116 - - - - - - - - -1

Substituting x = 56 - y into equation 1, it becomes

2(56 - y) + 4y = 116

112 - 2y + 4y = 116

- 2y + 4y = 116 - 112

2y = 4

y = 4/2 = 2

x = 56 - y = 56 - 2

x = 54

6 0

2 years ago

X varies directly as y. If x is 9 when y is 4, find x when-y is 8.

jeka94

Answer:

see explanation

Step-by-step explanation:

Given x varies directly as y then the equation relating them is

x = ky ← k is the constant of variation

To find k use the condition x = 9 when y = 4

k = $\frac{x}{y}$ = $\frac{9}{4}$ = 2.25

x = 2.25y ← equation of variation

When y = 8, then

x = 2.25 × 8 = 18

4 0

2 years ago