4. Given that a * b = ab- evaluate
(4marks)
(i) 4*8
(ii) 2* (4 * 8)​

Answers

Answer 1

Answer:

(i) 4*8 = 32

(ii) 2* (4 * 8) = 64

Step-by-step explanation:

(i) 4*8

4 × 8 = 32

(ii) 2* (4 * 8)

2 × (4 × 8)

2 × (32)

2 × 32 = 64

-TheUnknownScientist

Answer 2

Answer:

(i) 4*8 = 32

(ii) 2(4*8) = 2*32 = 64


Related Questions

find angle prq
please solve this​

Answers

Answer:

∠ PRQ = 55°

Step-by-step explanation:

The angle subtended at the centre by an arc is twice the angle subtended at the circumference by the same arc, thus

∠ PQR = 0.5 × 110° = 55°

Which statement correctly compares the function shown on this graph with
the function y = 7x - 10?
Plz help me with this

Answers

Answer:

The answer is A, the function shown on the graph has a smaller rate of change, but a higher starting point. hehe your welcome.

Step-by-step explanation:

The function shown in the graph has a smaller rate of change but a higher starting point. Option A is correct.

Given that,
To compare the function shown in the graph with y =7x -10.

What are functions?

Functions are the relationship between sets of values. e g y=f(x), for every value of x there is its exists in a set of y. x is the independent variable while Y is the dependent variable.

Here,
The slope of the function y =7x - 10 is m = 7, and the slope of the function in the graph is m = 6.
The intercept of the function in equation form is -10 while the intercept of the function shown in the graph is -6.

Thus, the functions shown in the graph have a smaller rate of change but a higher starting point. Option A is correct.

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Q6: 24 students in a class took an algebra test.
If 18 students passed the test, what percent passed?
Answer:
%

Answers

Answer:

25%

Step-by-step explanation:

18/24 passed that reduces 3/4.

So 1/4 didn't pass

Marisa has $26 in her purse. She pays $5 for lunch. Which expression represents this situation?

Answers

Answer: 26-5

Step-by-step explanation:

literally you take 5 aways from 26

X 2 +10x+22=13x, squared, plus, 10, x, plus, 22, equals, 13 1) Rewrite the equation by completing the square. Your equation should look like (x+c)^2=d(x+c) 2 =dleft parenthesis, x, plus, c, right parenthesis, squared, equals, d or (x-c)^2=d(x−c) 2 =dleft parenthesis, x, minus, c, right parenthesis, squared, equals, d.

Answers

Answer:

(x + 5)^2 = (5 - 3)^2

Step-by-step explanation:

Given the equation;

x^2 + 10x + 22 = 13

We have;

x^2 + 10x = 13 - 22

x^2 + 10x = -9

Adding half of 10 to both sides and completing the square as usual, we have;

(x + 5)^2 = 5^2 + (-9)

(x + 5)^2 = (5 - 3)^2

The rewritten equation, after completing the square, is

(x - 3/2)² = -79/4.

To rewrite the equation x² + 10x + 22 = 13x as (x + c)² = d or (x - c)² = d, we need to complete the square on the left side of the equation.

Step 1: Move the constant term (22) to the right side of the equation:

x² + 10x = 13x - 22

Step 2: Move all terms involving x to the left side:

x² + 10x - 13x = -22

x² - 3x = -22

Step 3: Take half of the coefficient of x (-3) and square it.

To both sides of the equation, add the following value:

x² - 3x + (-3/2)² = -22 + (-3/2)²

Simplifying:

x² - 3x + 9/4 = -22 + 9/4

Step 4: Make the right side of the equation simpler:

-22 + 9/4 = -88/4 + 9/4 = -79/4

Step 5: The left side of the equation should now be written as a perfect square trinomial:

(x - 3/2)² = -79/4

Therefore, the rewritten equation, after completing the square, is

(x - 3/2)² = -79/4.

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If you were evaluating the expression (20 - 2^4)^4(20−2​4​​ )​4​​ - 6, what would you do first?

Answers

I would do the exponent first
I hope this helps you :D

At an online fruit dealer, it costs $39 for 75 cases of bananas. What is the unit price?

Answers

Answer:

$0.52 cents per banana. $39 divided by the 75 bananas

Step-by-step explanation:

Answer:

$0.52

Step-by-step explanation:

When finding the unit price, we use divide the certain number of units of an item by the number of units

So for this question we will divide 39/75 to get a result of $0.52

The wheel on Bellas unicycle has a circumference of 0.9 yards how many will he travel if the wheel of his unicycle completes 1000 rotations

Answers

Answer:

900 yards.

Step-by-step explanation:

The circumference of a circle is the length of the circle's side.

Hence, for every one rotation, the wheel rotates once, and the unicycle travels the distance of the wheel's circumference.

Therefore, for 1000 rotations, and every rotation travelling 0.9 yards, the distance traveled would be 1000 * 0.9 = 900 yards.

Hope this helped!

what is the slope of the line 5x +2y = -15

Answers

Answer:

-5/2

Step-by-step explanation:

5x +2y = -15

-5x          -5x

2y = -5x - 15

y = -5/2x - 7.5

y = mx + b

Slope (m) = -5/2

down 5, right 2

-5/2
y = Mx + b
5x + 15 = - 2y
-5/2x -15/2 = y

Find the perimeter of each figure.

Answers

Answer:

28 for both of them

Step-by-step explanation:

1 is 28cm and 2 is 28cm

Step-by-step explanation:

since you know 2 of the sides you know the length of half of it since they are squares so if you att the 2 sides you know then multiply it by 2 you get the perimeter of that shape

On weekdays it costs £6.50 per hour to hire a tennis court at Meadway
Tennis Club. On Saturdays the cost is 30% more. How much does it cost to
hire a court for 2 hours on a Saturday?

Answers

Answer: £16.90

Step-by-step explanation:

From the question, we are informed that it costs £6.50 per hour to hire a tennis court at Meadway Tennis Club but that on Saturdays the cost is 30% more. The cost in Saturdays per hour will then be:

= £6.50 + (30% × £6.50)

= £6.50 + ( 0.3 × £6.50)

= £6.50 + £1.95

= £8.45

The cost to hire a court for 2 hours on a Saturday will then be:

= £8.45 × 2

= £16.90

Mrs. Coughlin bought 2.25 pounds of turkey at $4.96 per pound and 0.75 pound of provolone cheese at $5.20 per pound. If Mrs. Coughlin gave the cashier $20, how much change will she receive?

Answers

Answer:

$4.94

Step-by-step explanation:

To find out the change from $20, we need to find her total cost.

Total cost = 2.25lbs * $4.96/lb + 0.75lbs * $5.20/lb

Total cost = $11.16 + $3.90 = $15.06

Now $20 - total cost = $20 - $15.06 = $4.94

Can you guys check these :) I’ll give brainleist :)

Answers

Answer:

9. No

10. Yes

Step-by-step explanation:

The first one is not, since you have (3, 3) and (3, 9).  In a function, each x maps to a single y.

The second one is since every x appears only once.

Which of the following sentences could not be used to represent the equation X-5 = -10? D A number subtracted from five is equal to negative ten. A number less five equals negative ten. de Five less than a number is negative ten. ko If a number is decreased by five, the result is negative ten.​

Answers

Answer:

Option A is correct

Step-by-step explanation:

The equation that the first option is talking about would be 5-X=-10

someone please help
i will give brainliest

Answers

Answer:

its -18 going to the right closed circle

Step-by-step explanation:

Answer: r >_ (greater than or equal to) -18

Step-by-step explanation:

You would place it on -18 :)

You’re welcome :)

simplify 3square root 5 over 4square root of 5

Answers

Answer:

5[tex]\frac{1}{12}[/tex]

Step-by-step explanation:

This is the answer because:

1) We have to do 5^1/3 x 5^-1/4

2) Next, we do 5^1/3 - 1/4 which is 5^1/12

Therefore the answer is 5^1/12

Hope this helps!

The simplified value of the given expression is 5¹/₁₂

What is expression?

Expressions in math are mathematical statements that have a minimum of two terms containing numbers or variables, or both, connected by an operator in between.

Given is an expression, [tex]\frac{\sqrt[3]{5} }{\sqrt[4]{5} }[/tex], we need to simplify it,

5¹/₃ / 5¹/₄

= 5⁽¹/₃-¹/₄⁾

= 5¹/₁₂

Hence, the simplified value of the given expression is 5¹/₁₂

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3 to the power of 2 + (15 ÷ 5 × 6) − 49

Answers

Answer:

i think its -31

Step-by-step explanation:

thats what i got

hope this helps :)

Answer:

-22

Step-by-step explanation:

PEMDAS!

Solve (15 ÷ 5 × 6) first. This is equal to 18.

[tex]3^2[/tex] + 18 - 49

[tex]3^2[/tex] is equal to 9.

9 + 18 - 49 = -22

The function y= 19,800/x is a rational function. Use this function to answer each question. What are the asymptotes of the function? Check all the apply. • x=0 • x= 19,800 • y= 0 • y= 19,800

Answers

Answer:

Step-by-step explanation:

Given the function y = 19800/x

Vertical asymptote occurs at when f(x) = 0 where;

f(x) is the denominator of the given function.

From the expression given: f(x) = x

Since f(x) => 0, hence x = 0

To get the horizontal asymptote, we will look at the degree of the numerator and denominator. If the degree of numerator is less than the denominator, the horizontal asymptote will be zero. From the function, we can see that the degree of the numerator is zero (being a constant) and that of the denominator is 1.

Since 0<1, hence the horizontal asymptote is 0

x = 0, y = 0

Answer:

x = 0

y = 0

second question is b

third question is b

and forth is c

Step-by-step explanation:

what is 8.275 rounded to the nearest hundredth.

Answers

Answer:

8.3

Step-by-step explanation:

Answer:

8.28

Step-by-step explanation:

Find the number in the hundredth place  7  and look one place to the right for the rounding digit  5 . Round up if this number is greater than or equal to  5 and round down if it is less than  5 .

Pls rate brainiest

Plz help!!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

c = 5n

Step-by-step explanation:

The cost is equal to the price times the number of notebooks

Jacob earns $7.25 an hour at his part-time job, and earns $9 each time he mows the lawn for his mother. He graphs the amount of hours he works at his job (x) and the number of lawns he mows (y) to determine how to earn at least $300. Which type of boundary line should he use in his graph?

Answers

Answer:

$7.25 at part-time job $9.00 every time lawn mowed           so he would get 33.33 day so we will just say 33 times to get 300 dollars if he gets $9 for mowing.  And 41.37  hours to get $300 and he would have to use x and y graph to find the boundary line.

1+2=? may be 3
plz help me

Answers

Answer:

I'm pretty sure it is 3

Step-by-step explanation:

Not too sure though

if one apple cost 5 rupee orange cost 0.5 rupee and grape cost 0.25 rupee . find the number of apple orange ad grape we can buy from 20 rupee.

Answers

Answer:

3

Step-by-step explanation:

Add all the costs of the fruit.

5.75

Then divide it by 20.

= 3.4782.....

You can't have a quarter or half and apple so you round down.

Son answer is 3.

Hope this has helped!

Write a conjecture for the following situation - the product of three odd numbers.

Answers

Answer:

5

Step-by-step explanation:

The members of the Smithtown baseball team sell $5 raffle tickets and $20 raffle
tickets for a fundraiser. Emilio sells a total of 50 tickets and has collected $400.
The graph of the system of equations that represents this scenario is shown below.
Which of the following is the best interpretation of the solution to the system of
equations in context of the scenario?
A Emilio has sold 20 of the $20 raffle tickets and 50 of the $5 raffle tickets.
B Emilio has sold 50 of the $20 raffle tickets and 20 of the $5 raffle tickets.
C Emilio has sold 10 of the $5 raffle tickets and 40 of the $20 raffle tickets.
D Emilio has sold 40 of the $5 raffle tickets and 10 of the $20 raffle tickets.

Answers

The answer is D. 40x5=200 and 10x20=200. The total would be 400$

Answer: d

Step-by-step explanation:

Write the equation of the line that has a slope of -3 and a y-intercept of 2 in slope-intercept form.

Answers

Answer:

Step-by-step explanation:

Well, the linear equation of a line is:

y=mx+b

Where  

m

is the slope and  

b

is your y-intercept

So, you can just plug the numbers into the equation

m = − 3

and  

b = − 2

y = − 3x-2

I need help with my homework

Answers

Answer:

The measure of the arc RQ is 160°

Step-by-step explanation:

In any circle, the measure of the subtended arc of an inscribed angle is twice the measure of this inscribed angleThe measure of any circle is 360°

Let us use these rules to solve the question

In the given figure

∵ ∠RPQ is an inscribed angle subtended by arc RQ

m of arc RQ = 2 × m∠RPQ

∴ m∠RPQ = 5x + 15

∴ m of arc RQ = 2 × (5x + 15)

→ Multiply the bracket by 2

∴ m of arc RQ = 2(5x) + 2(15)

m of arc RQ = 10x + 30

The measure of the circle = 360°

∵ The sum of the measures of arcs RQ, QP, and PR equals the measure

   of the circle

∵ m of arc QP = 6x - 12

∵ m of arc PR = 9x + 17

→ Add them and equate the sum by 360°

10x + 30 + 6x - 12 + 9x + 17 = 360

→ Add the like terms in the left side

∵ (10x + 6x + 9x) + (30 - 12 + 17) = 360

∴ 25x + 35 = 360

→ Subtract 35 from both sides

∴ 25x = 325

→ Divide both sides by 25 to find x

x = 13

→ To find the measure of arc RQ substitute x by 13 in its measure

∵ m of arc RQ = 10(13) + 30 = 130 + 30

∴ m of arc RQ = 160°

The measure of the arc RQ is 160°

The Hayes family is selecting a furniture set. A furniture set has a bed, a desk and a dresser. There are 3 beds, 3 desks, and 1 dresser to select from. How many different furniture sets could they select?

Answers

Answer:

3x3x1 which is 9

Step-by-step explanation:

9 furniture sets.

Hope this helps ;D

Amanda is making white oatmeal cookies with raisins and pecans for her club.The recipe makes seventeen of the big,chewy kind of oatmeal cookies with lots of raisins and nuts.It takes one-fourth of a cup of nuts and one-half of a cup of raisins just for the seventeen cookies!There are thirty-four members in Amanda's club .If she makes exactly thirty-four cookies,how many cups of nuts will she need ?

Answers

Answer:

1/2 cup of nuts

Step-by-step explanation:

If it takes 1/4 cups of nuts to make 17 cookies

Then it takes 1/4 * 1/17  = 1/68 cups of nut to make 1 cookie

So,

If 1/68 cups of nut are needed to make 1 cookie

To make 34 cookies we need;

34 * 1/68 = 1/2 cup of nuts

Line b passes through (3, 4) and (0, 2).
is it parallel?

Answers

Answer:

no perpendicular

Step-by-step explanation:

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