My calculator does not have a 3 key that works! How can I use this broken calculator to do 23 x 45.

Answers

Answer 1
Solution:-

[tex]\longrightarrow[/tex] This problem can be tackled by using distributive property of multiplication .

It states for any three numbers a,b and c

[tex]\green{ \underline { \boxed{ \sf{(a±b)\times c = a \times c±b\times c}}}}[/tex]

Similarly,

[tex]\quad[/tex]23 × 45

[tex]\longrightarrow[/tex](21+2) ×45

[tex]\longrightarrow[/tex]21×45+2×45

[tex]\longrightarrow[/tex]945 + 90

[tex]\longrightarrow[/tex] 1035

It can also be done as-

[tex]\quad[/tex]23 × 45

[tex]\longrightarrow[/tex](25-2) ×45

[tex]\longrightarrow[/tex]25×45-2×45

[tex]\longrightarrow[/tex]1125-90

[tex]\longrightarrow[/tex] 1035


Related Questions

Ben is 4 times as old as Ishaan and is also 6 years older than Ishaan.
How old is Ben?

Answers

Given :-Ben is 4 times as old as Ishaan.

Ben is 6 years older than Ishaan.

To find :-age of Ben

Let :-Ishaan age be xBen age be 4x

Solution :-

✪According to question:-

Ben is 6 years older than Ishaan

So :-

Ben age - Ishaan age = 6 years

put supposed values

4x - x = 63x = 6x = 6 ÷ 3x = 6/3x = (2 × 3)/3x = 2/1x = 2

Original Ages :-

Ishaan age = xIshaan age = 2 years

Ben age = 4xBen age = 4(2)Ben age 4 × 2Ben age = 8 years

✪Verification :

1st condition:-

Ben age - Ishaan age = 6 years

put original ages

8 - 2 = 66 = 6

LHS=RHS

Hence verified !

Required answer :-

Ben's age = 8 years

Find the area of the
shaded region.
8m
12m

Answers

Answer:

96m^2

Step-by-step explanation:

To find the area you must multiply length times width (l*w).

8*12 = 96

So 96 m^2

How do I describe the end behavior, determine if it's an odd or even degree, and the real number of zeros? Please help me.

Answers

Answer:

1. Even Degree

2. 6 zeros

Step-by-step explanation:

Determine if it’s an odd or even degree:—

  - The graph is shown approach positive infinity when both sides of x-values, negative and positive, both approach their respective infinity sides.

To put it simply, see when both negative x-values and positive x-values approach their negative or positive infinity, the y-values will always be positive, even if negative x-values approach negative infinity.

For a polynomial function to be an even degree, it must satisfy the following:—

[tex]\displaystyle \large{ \lim_{x \to \pm \infty} f(x) = \infty}[/tex]

As an odd degree, either negative or positive x-values will approach positive infinity or negative infinity, depending on the function itself.

From the graph, we can say that the function is an even degree.

__________________________________________________________

Summary I

  Even-Odd Degree

Even Degree, when both sides of x-value approach their respective infinity, y-value will always approach positive infinity.

Odd Degree, one side of y-value will approach positive infinity and another will approach negative infinity.

__________________________________________________________

Determine numbers of zeros:—

  - We can determine numbers of zeros by examining x-axis and the graph. How many times does the graph intersect or pass through x-axis? Count and you should get 6 intercepts.

Therefore, there are 6 real solutions/zeros for this function/equation.

__________________________________________________________

Summary II

  Determine zeros

To determine or check how many solutions or zeros do the graph/function/equation has, you can use the graph method. Simply count how many times does the graph pass through x-axis and x-intercepts are zeros.

__________________________________________________________

If you have any doubts regarding my answer or explanation, do not hesitate to ask in comment!

work out the mean of the numbers 19 , 7 , 11 , 8 , 15 , 15​

Answers

Answer:

12.5

Step-by-step explanation:

add all  numbers and divide by 6

62.5 because u had den divide by how many numbers u see

PLEASE HELP!! I have such a hard time in math and have been working all day

Answers

Answer:

14

Step-by-step explanation:

The sides of an isosceles right triangle are 1-1- \sqrt{2}. Since the legs are 7\sqrt{2}, we multiply it by \sqrt{2} to get 14.

HELP! WHAT DID I DO WRONG?!
PLEASE PROVIDE THE CORRECT SOLUTION ALONG WITH STEP-BY STEP EXPLANATION!

Answers

Answer:

1256

Step-by-step explanation:

You added the diameter for r and not the radius

3.14(20)^2

3.14(400)

1256

you make 12 equal payments you pay a total of $1308. how much is each payment? step by step

Answers

Answer:

1308/12=109

Step-by-step explanation:

each payment is 109 dollars

i just divided 1308 by 12 and got 109

Answer:

$109

Step-by-step explanation:

12 payments = $1308

1 payment =?

= 1308÷12 = 109

Which line is a line of symmetry for the figure below?


A.
Line A
B.
Line C
C.
Line D
D.
Line B

Answers

Answer:

A.

Line A

Please mark my answer the brainliest

WILL GIVE BRAINLIST .

which function is equivalent to y =5 (x+3 ^2) -8 ?

A) y = 5x^2 +30x +37

B) y=5x^2 + 6x - 2

C) y=5x^2 +30x +5

D) y= 5x^2 + 1

Answers

Answer: Below

Step-by-step explanation:

So we can start off by solving this equation.

(x + 3)² = x² + 6x + 9

5(x² + 6x + 9) = 5x² + 30x + 45

5x² + 30x + 45 - 8 = 5x² + 30x + 37

Going off of this, we can already see that A is our answer.

Two sides of a triangle measure 15 inches and 18 inches, respectively. Which of these is NOT a possible length for the third side of the triangle? A)4 inches B)18 inches C)24 inches D)36 inches

Answers

Answer:

i don't know I don't have ideas

Please help with this question I’m stuck

Answers

Answer:

53 degrees

Step-by-step explanation:

because its at a right angle and measure 1 is 37 so 90-37 would equal 53

Step-by-step explanation:

because it is on a corner the hole corner = 90

1 + 2 = corner so

1+ 2 = 90

1 is 37

37 + 2 = 90

rearrange

90 - 37 = 2

so 2 = ???

Find the distance between ( -2,3) and (4,5)

Answers

(-2,3)(4,5)

Distance:-

[tex]\\ \sf\longmapsto \sqrt{(4+2)^2+(5-3)^2}[/tex]

[tex]\\ \sf\longmapsto \sqrt{6^2+2^2}[/tex]

[tex]\\ \sf\longmapsto \sqrt{40}[/tex]

[tex]\\ \sf\longmapsto 2\sqrt{10}units[/tex]

Solve the quadratic equation below by Completing the Square STEP-BY-STEP:
x^2+6x=0

Answers

Here is the step by step explanation

The ratio to boys to girls is 3:5 there are 40 children in the class how many children are boys

Answers

Answer:

15 boys and 25 girls in the class

The surface area of a cylinder is 1 m^2. What would its radius and hight be?

Answers

Answer:

Please type full question. It is not full.

A plane is descending from an altitude of 8,000 feet. The plane
descends at a constant rate of 500 feet per minute.
Which function can be used to determine the height, H, of the plane
after m minutes?

Answers

The linear function that can be used to determine the height, H, of the plane after m minutes is given by:

H(m) = 8000 - 500m

What is a linear function?

A linear function is modeled by:

[tex]y = mx + b[/tex]

In which:

m is the slope, which is the rate of change, that is, by how much y changes when x changes by 1.b is the y-intercept, which is the value of y when x = 0, and can also be interpreted as the initial value.

In this problem:

The plane is descending from an altitude of 8,000 feet, hence the y-intercept is b = 8000.The plane descends at a constant rate of 500 feet per minute, hence the slope is of m = -500.

Thus, the equation is:

H(m) = 8000 - 500m.

More can be learned about linear functions at https://brainly.com/question/24808124

A car travels 480 miles in 12 hours. What is the rate in miles per​ hour? In hours per​ mile

Answers

Answer:

40 miles per hour

Step-by-step explanation:

480 divided by 12 equals 40, your answer

Please give brainliest thanks

The rate in miles per hour -- > miles/hour

      --> 480miles / 12 hours = 40 miles/hour

The rate in hours per miles --> hours/ mile

      --> 12 hours/ 480 miles = (1/40) hours/mile

Hope it helps!

What is something that you multiply and get -48 but when you add you get 13

Answers

Answer:

16 and -3

16 times -3 equals 48

16 + (-3) is equal to 16 - 3 which is 13

9. The area of a circle is 706.97 in2. Find the radius.

Answers

Answer:

15

Step-by-step explanation:

Using the formula

A=πr2

Solving

r=√A/π

r=√706.97/22/7

r≈15.00118

Find the co-ordinate of the point where y-4x=1 crosses the y-axis

Answers

Answer: (0,1)

Step-by-step explanation:

When a line crosses the y-axis, the x-coordinate must equal to 0.

Now we can plug in x = 0 into the equation given:

y - 4*0 = 1

y- 0 = 1

y = 1

Therefore, the point where the line crosses the y-axis is (0,1)

Using the following equation: 5 KNO2 + 2 KMnO4 + 3 H2SO4 ------> 5 KNO3 + 2 MnSO4 + K2SO4 + 3 H2O How many moles and how many grams of KMnO4 are needed to carry out this reaction on 11. 4 grams of KNO2?

Answers

The number of moles of KMnO₄ needed to carry out the reaction is 0.0536 moleThe mass of KMnO₄ needed to carry out the reaction is 8.5 g

Stoichiometry

From the question, we are to determine the number of moles and mass of KMnO₄ needed

From the given balanced chemical equation

5KNO₂ + 2KMnO₄ + 3H₂SO₄ → 5KNO₃ + 2MnSO₄ + K₂SO₄ + 3H₂O

This means 5 moles of KNO₂ is required to react completely with 2 moles of KMnO₄

First, we will determine determine the number of moles of KNO₂ present

From  the given information,

Mass of KNO₂ = 11.4 g

Using the formula,

[tex]Number\ of\ moles = \frac{Mass}{Molar\ mass}[/tex]

Molar mass of KNO₂ = 85.1 g/mol

Therefore,

Number of moles of KNO₂ = [tex]\frac{11.4}{85.1}[/tex]

Number of moles of KNO₂ = 0.13396 mole

Now,

If 5 moles of KNO₂ is required to react completely with 2 moles of KMnO₄

Then,

0.13396 mole of KNO₂ will react completely with [tex]\frac{0.13396 \times 2}{5}[/tex] mole of KMnO₄

[tex]\frac{0.13396 \times 2}{5}[/tex] = 0.053584 mole ≅ 0.0536 mole

Hence, the number of moles of KMnO₄ needed is 0.0536 mole

For the mass of KMnO₄ needed,

Using the formula,

Mass = Number of moles × Molar mass

Molar mass of KMnO₄ = 158.034 g/mol

Therefore,

Mass of KMnO₄ needed = 0.053584 × 158.034

Mass of KMnO₄ needed = 8.468 g

Mass of KMnO₄ needed ≅ 8.5 g

Hence, the mass of KMnO₄ needed to carry out the reaction is 8.5 g

Learn more on Stoichiometry here: https://brainly.com/question/6061451

Please can you guys help me

Answers

Answer:

Calculator

Step-by-step explanation:

Literally all you have to do is multiply every number on one tow

iygm

it's actually easier than you might think

good luck!

If f(x) = 2(18 – 9x) + 4x, what is the value of f(7)?

Answers

Answer:

-62

Step-by-step explanation:

f(x)=2(18-9x)+4x

f(7)=2(18-9(7))+4(7)

f(7)=2(18-63)+28

f(7)=2(-45)+28

f(7)=-90+28

f(7)=-62

Answer:

f(7) = -62

Step-by-step explanation:

Basically, what the question is asking us to do is to plug in 7 every time we see an x.

f(x) = 2(18 - 9x) + 4x

f(7) = 2(18 - 9(7)) + 4(7)

f(7) = 2(18-63) + 28

f(7) = 2(-45) + 28

f(7) = -90 + 28

f(7) = -62

Find the volume of the box​

Answers

Answer:200

Step-by-step explanation:

Volume formula: length x width x height

5x4x100=200

how would you solve it's for algebra 2B I'm just a little stuck thanks so much for your help hope it's not a waste of time

Answers

Answer:  [tex]\frac{2x^2+s^2}{x(x+s)}[/tex]

This is the fraction of 2x^2+s^2 all over x(x+s)

==============================================

Explanation:

Currently the denominators are not the same, so we cannot subtract the fractions just yet.

We need to get the denominators equal to the LCD (lowest common denominator).

In this case, the LCD is x(x+s). Often the LCD is the product of the denominators, but not always.

To get the first fraction to have the LCD, we multiply top and bottom by x.

[tex]\frac{3x}{x+s} = \frac{x*3x}{x(x+s)} = \frac{3x^2}{x(x+s)}[/tex]

To get the second fraction to have the LCD, we multiply top and bottom by x+s

[tex]\frac{x-s}{x} = \frac{(x+s)(x-s)}{x(x+s)} = \frac{x^2-s^2}{x(x+s)}[/tex]

I used the difference of squares rule to go from (x+s)(x-s) to x^2-s^2.

-----------------------------------------

At this point, we have x(x+s) in both denominators and we can subtract

[tex]\frac{3x}{x+s} - \frac{x-s}{x}\\\\\frac{3x^2}{x(x+s)} - \frac{x^2-s^2}{x(x+s)}\\\\\frac{3x^2-(x^2-s^2)}{x(x+s)}\\\\\frac{3x^2-x^2+s^2}{x(x+s)}\\\\\frac{2x^2+s^2}{x(x+s)}\\\\[/tex]

Optionally, you can distribute the x through in the denominator, but I'll leave it factored.

Write and solve a proportion to answer the question.

What number is 45% of 60?

Answers

Answer:

27

Step-by-step explanation:

0.45 divide by 60 and you get 27

Answer:

27

Step-by-step explanation:

x/60 = 45/100

if you write it out, cross multiply then solve for x

Please help me, I’m failing this class! The question is find the missing angles in each of the figures

Answers

Answer:

3. m<x= 110  m<y=40

4. m<q=35   m<r=35

Step-by-step explanation:

All angles of a triangle must add up to 180 degrees

Help me out here please

Answers

Answer:

X=21

Y=3

Z=21

BD=42

Step-by-step explanation:

X=21 (diagonals of a rectangle bisect each other)

Y=3. 21=7y

÷7

Y=3

Z=21 (diagonals of a rectangle bisect each other)

BD=X+Z

=21+21

=42

A manager at a shopping mall counts 244 males and n females as they enter the mall. The manager realizes that 25% of all males and 25% of all females are children. She writes the expression 0.25n + 61 to represent the number of children who enter the mall. Is the manager correct?

Answers

Answer:

Step-by-step explanation:

The manager is not correct in her calculation.

Step-by-step explanation:

There are 244 males and n females who entered the mall as the manager at the shopping mall counts.

If 25% of all males are children, then the number of male children are .

Again, the 25% of all female are children, then the number of female chilfren are .

Therefore, the total number of children will be (60 + 0.25n).

But the manager gives the number of children to be 0.25n + 61 who entered the mall.

So, the manager is not correct in that calculation. (Answer)

Can the side lengths of 3, 10, and 13 form a triangle?

Answers

Answer:

No.

Step-by-step explanation:

Assuming 13 is the base. 3 can't be a slope, and 10 can't be a slope because the sids aren't long enough.

Answer: No

Step-by-step explanation:

This cannot form a triangle because the Triangle Inequality states that the sum of any two sides of a triangle must be greater than the other side.

This set of side lengths doesn't satisfy the Triangle Inequality, since 3 + 10 = 13, and 13 is not greater than 13.

In short, this doesn't form a triangle, instead it just forms a straight line.

If you want more info lookup Triangle Inequality on the internet.

hope this helps

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