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3 years ago

I need help on number 8

Mathematics

2 answers:

nikklg [1K]3 years ago

7 0

Answer:

W = 20 inch

Step-by-step explanation:

To find L or W you would need to divide A/(L or W) to get ( L or W)

so right now ur looking for w so ur eqation would be

A/L = W

so 10/(1/2) so with be 20

bazaltina [42]3 years ago

3 0

Hello from MrBillDoesMath!

Answer:

y >= 8

Discussion:

The equation

y - 16 > = -8 => add + 16 to both sides

y - 16 + 16 > = -8 + 16 =>

y >= 8

NOTE: in your figure you show y > 8. That is NOT correct as it excludes the point 8 which is a valid solution. Similarly your graph shows an open circle (for not included, for x = 8). That should be a FILLED circle as x= 8 is included in the solution set. Get it? You had the solution but for some reason you incorrectly excluded x = 8.

Thank you,

MrB

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How many 1ps make £7400

AnnZ [28]

Answer:

740000

Step-by-step explanation:

100ps make up £1, so times 7400 by 100 to get the answer

4 0

4 years ago

10x + 3y = 19 y = 2x + 5

sleet_krkn [62]

Answer:

x = 1/4

y = 5 2/4

Step-by-step explanation:

Given two equations

1. 10x + 3y = 19

2. y = 2x + 5

Substitute 2x + 5 for y in the first equation

We have

10x + 3y = 19

10x + 3(2x + 5) = 19

Expand the bracket

10x + 3 X 2x + 3 X 5 = 19

10x + 6x + 15 = 19

16x + 15 = 19

Subtract 15 from both sides to eliminate 15 on the left

16x + 15 - 15 = 19 - 15

16x = 4

Divide both sides by 16 to isolate x

16x/16 = 4/16

x = 1/4

Now, substitute 1/4 for x in either equation to get y.

Using equation 2 , we have

y = 2x + 5

= 2(1/4) + 5

= 2/4 + 5

LCM of the denominator is 4.

Divide the LCM by the denominators and multiply the results by the numerators. Also, the LCM becomes the denominator of the results

Therefore

= 2 + 20/4

= 22/4

y= 5 2/4

x = 1/4 , y = 5 2/4

6 0

3 years ago

Two angles x and y are complementary - which means their

ASHA 777 [7]

Answer:

X=55° Y=35°

Step-by-step explanation:

X+Y=90°

Y= x-20

(X-20)+X=90°

2X-20=90°

2X=110°

X=55°

55°+Y=90°

Y=35°

7 0

3 years ago

Read 2 more answers

The function y = f (x) is graphed below. What is the average rate of change of the function f(x) on the interval - 1 ≤ x ≤ 3?

jonny [76]

Answer:

$\displaystyle -2$

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

Average Rate of Change: $\displaystyle \frac{f(b) - f(a)}{b - a}$

Step-by-step explanation:

Step 1: Define

Interval -1 ≤ x ≤ 3

a = -1, b = 3

f(a) = f(-1) = 4

f(b) = f(3) = -4

Step 2: Find Average

Substitute in variables [ARC]: $\displaystyle \frac{f(3) - f(-1)}{3 + 1}$
Substitute: $\displaystyle \frac{-4 - 4}{3 + 1}$
[Fraction] Subtract/Add: $\displaystyle \frac{-8}{4}$
[Fraction] Divide: $\displaystyle -2$

4 0

3 years ago

5(x-3) /8 +2=7 solve?

SVETLANKA909090 [29]

Answer:

Okay I'm not thoroughly understanding your question. But here is my answer for BOTH ways.

Step-by-step explanation:

If it's 5 TIMES 3x/8 +2=7

x= 8/3 or x=2.6

If it's 5(3x) OVER 8 in fraction form +2=7

x= 11

Hope this answers your question.

3 0

3 years ago