what are two different ways to solve 257+438

Answers

Answer 1

Answer:

Two ways to solve is to just do column addition or split 200+50+7 and add it to 400+30+8 first add 200+400 = 600, 50+30=80, 7+8 = 15. Add 600+80+15= 695.

Step-by-step explanation:

Answer 2

Answer:

695

Step-by-step explanation:


Related Questions

Please help me asap! I will give brainly!

Answers

Answer:

Divide the number of contestants by 4 and when there is 120 contestants there is 30 winners

Step-by-step explanation:

Looking back at past sequences we can see that when we had 8 contestants we had 2 winners 8/4=2 and we also saw 16/4=4 so that was the formula now we just had to do it on 120 contestants and now we get 30 winners....Hope this helps! :)

Answer:

Step-by-step explanation:

The ratio of contestants to winners is 4 : 1 so to find the number of winners you must divide by 4, so you must divide 120 by 4, which is 30.

Please help me with this.

Answers

Answer:

h(3)=20

Step-by-step explanation:

h(3)=h(3-2)*h(3-1)=h(1)*h(2)=-10*-2=20

Answer:

20

Step-by-step explanation:

h(1) = -10

h(2) = -2

h(n) = h(n-2) * h(n-1)

Let n=3

h(3) = h(3-2) * h(3-1)

      = h(1) * h(2)

       = -10 * -2

       = 20

What evidence supports a conservation law?

Carbon dioxide becomes glucose and oxygen during photosynthesis.
Hydrogen is made from the breakdown of carbon dioxide during photosynthesis.
Chlorophyll converts sunlight to chemical energy during photosynthesis.
Glucose and oxygen become carbon dioxide and water during photosynthesis.

Answers

Answer:

Chlorophyll converts sunlight to chemical energy during photosynthesis.

Step-by-step explanation:

Three forms of energy come into play in the functioning of an ecosystem:

* the electromagnetic radiation of short-wavelength  (light),

* the electromagnetic radiation of long-wavelength  (infrared: heat),

* chemical energy (in the form of organic molecules: sugars, etc.).

The conversion of light energy into chemical energy takes place in  plants: it's photosynthesis.

Answer:

Carbon dioxide react with water and becomes glucose and oxygen during photosynthesis.

Step-by-step explanation:

6CO2 + 6H2O → C6H12O6 + 6O2. This means that the reactants, six carbon dioxide molecules and six water molecules, form glucose and oxygen.( during photosynthesis carbon dioxide and H2O in presence of sunlight and chlorophyll form glucose and oxygen)

Please help me asap! I will give brainly!

Answers

Answer:

$26

Step-by-step explanation:

Answer:

26

Step-by-step explanation:

3 raffle tickets = $2 certificate

39 raffle tickets = ?

39 divide 3 = 13

13 * 2 = 26

39 raffle tickets = $26 certificate

PLEASE HELP MEEEEeeee

Answers

Answer:

D. 2^7

Step-by-step explanation:

2^3 x 2^4 would equal 128. So, if you do the math for all of them:

A isn't correct because it equals 16.

B isn't correct because it equals 4096.

C isn't correct because it equals 16384.

D is correct because 2^7 is 128.

Hope this helped!

The answer with be D

Determine the rule for the number pattern and use it to find the missing values.

Which of the following statements are true about the pattern above?
Select all that are true.
3,7,15 , , , ,....
The 10th term in the pattern will be 30.
Each term in the pattern will be a multiple of 3.
Each term in the pattern will be prime.
Each term in the pattern will be odd.

Answers

9514 1404 393

Answer:

  Each term in the pattern will be odd.

Step-by-step explanation:

The first differences are ...

  7 -3 = 4

  15 -7 = 8

These differ by 4, and the second is double the first.

These relationships between the first differences give rise to two possible sequences: a) an exponential sequence; b) a quadratic sequence. We can use a graphing calculator to find the coefficients of each of the patterns.

Exponential Sequence

  a[n] = 2·2^n -1

  The sequence is 3, 7, 15, 31, 63, 127, 255, 511, 1023, 2047.

  The 10th term is 2047.

Quadratic Sequence

  a[n] = 2n^2 -2n +3

  The sequence is 3, 7, 15, 27, 43, 63, 87, 115, 147, 183.

  The 10th term is 183.

__

Based on the above, the only thing we can say about these sequences is that they are all odd numbers.

Clearly, the 10th term is not 30. 7 is not a multiple of 3, so that observation fails immediately. 15 is not prime, so that observation also fails immediately.

_____

Additional comment

The differences of first differences are called "second differences". The differences of those are "third differences". and so on. If you keep taking differences of a sequence described by a polynomial, the n-th differences being constant means the sequence is described by an n-th degree polynomial.

Here, if we assume the 2nd differences are constant at 4, then the sequence is described by a 2nd-degree polynomial. (Similarly, constant first-differences are described by a 1st-degree polynomial--a linear function.)

If sequential levels of differences are all exponential sequences, then the sequence itself is an exponential sequence. As here, it may have a vertical offset. The base of the exponential will be the common ratio of the differences. (Here, the first differences have a ratio of 8/4 = 2, so the sequence could be exponential with a base of 2.)

Each term in the pattern will be odd

What is equivalent to the expression 5x - 4 - 9x +7

A. 4x + 3
B. -4x - 3
C. -4x + 3
D. -x
E. x

Answers

5x - 4 -9x + 7
simplify
5x - 9x = -4x

-4 + 7 = 3

Answer: -4x - 3
The answer is c.

5x-9x=-4x
-4+7=3
There for the answer would be -4x+3

Please check the image below for more info on the question

Answers

Answer:

The answer is A

Step-by-step explanation:

(I'm not 100% sure though, hope this helps.)

The answer is A and and t=5 please give me brainliest

Functions, f and g are given by f(x)= 3+ cos x and g(x) = 2x, x is a real number. Determine the value of c for which f(g(x))= g(f(x)) where 0 [tex]\leq[/tex]x<2[tex]\pi[/tex]

Answers

Answer:

2 is my answer

Step-by-step explanation:

one-half of the people at a game wore hats. two-thirds of those people also wore gloves. one-fourth of those people wearing gloves and hats also wore scarves. 25 of the people had hats and scarves but no gloves. One hundred people had only scarves. If there were 1824 people, how many had scarves
Please give answer as soon as possible

Answers

Final Answer: 277 people had scarves.

Step-by-step explanation:

1/2 people wore hats2/3 people wore also wore gloves.1/4 people wore scarves.25 people had hats and scarves. (no gloves)100 people have only scarves.1824 people total

1824 / 2 =  912 (Divide by 2 to get the people wearing hats)

912 / 3 = 304 (subtract 304 to get 2/3)

912-304 = 608

608/4 = 152. (people who wore gloves, hats, and scarves.)

152+100+25= 277

Answer:

1111

Step-by-step explanation:

1111223

This is for my math class

Answers

Answer:

-25 feet

Step-by-step explanation:

We know that the change in altitude for the air balloon is -1500 feet, all within a span of 60 minutes, which then we are asked what is the rate of change.

To find the rate of change, we have to be able to divide a number by both sides that will not give us a decimal or very odd number. To avoid getting a decimal, divide both sides by 60.

-1500/60 = -25

60/60 = 1

So the rate of change would be -25 feet

It would be -25 feet because of how the altitude changes with her time

Which expression is equivalent to _?

Answers

Answer:

2^-1

Step-by-step explanation:

2^2 *2 / 2^4

We know that 2^2 * 2 = 2^2 *2^1

a^b*a*c = a^(b+c)  so 2^2*2*1 = 2^(2+1)+ 2^3

2^3 / 2^4

We know that a^b / a^c = a^(b-c)

2^3 /2^4 = 2^(3-4) =2^-1

The equivalent of the given expression 2² × (2/2⁴) when simplified is; 2⁻¹

How to simplify exponents?

We are given the exponents expression;

2² × (2/2⁴)

Let us first multiply out the numerator to get;

2² × 2 = 2³

Thus, our overall expression is;

2³/2⁴

According to laws of exponents;

a^(b)/a^(c) = a^(b-c)

Thus;

2³/2⁴ = 2³⁻⁴

⇒ 2⁻¹

Read more about Exponents at; https://brainly.com/question/11761858

solve for P

P/15=20/25

Answers

Answer:

p=12

Step-by-step explanation:

Cross multiply in order to get answer

Choose a number line to model the following situation:

The temperature outside rose 15° and then dropped 15°. (4 points)

a
A vertical number line is shown with labels at 0 and 15. A red arrow (labeled dropped 15 degrees) begins at 15 and ends at 0. A purple arrow (labeled rose 15 degrees) begins at 0 and ends at 15.

b
A vertical number line is shown with labels at negative 15, 0, and 15. A red arrow (labeled dropped 15 degrees) begins at 0 and ends at negative 15. A purple arrow (labeled rose 15 degrees) begins at 0 and ends at 15.

c
A vertical number line is shown with labels at negative 15, 0, and 15. A red arrow (labeled dropped 15 degrees) begins at 15 and ends at 0. A purple arrow (labeled rose 15 degrees) begins at negative 15 and ends at 0.

d
A vertical number line is shown with labels at 0, negative 15, and negative 30. A red arrow (labeled dropped 15 degrees) begins at 0 and ends at negative 15. A purple arrow (labeled rose 15 degrees) begins at negative 15 and ends at negative 30.

Answers

Answer: A

Step-by-step explanation: It is showing that the temp Atari is raising by 15 ( +15) then dropping by 15 (-15)

Hope this Helps :))

Hxjs sis siss is ais sis sis sisw is

Mr. Jacobs is going to make a histogram of the test scores from the last math test he gave. He plans to first organize the data into a stem-and-leaf plot and then make the histogram from the stem-and-leaf plot. The test scores are listed below.

79, 82, 65, 61, 94, 97, 84, 77, 89, 91, 90, 83, 99, 71, 68, 77, 87, 85

How many bars will his histogram have?

3
4
5
6

Answers

I think the answer to this question is 4
I would say the answer is 4

Help, I need somebody… HELP!!!!!

Answers

It’s times 3……………………..
They are all getting multiplied by 3
Hope I helped

So say selling a backpack thats used-like new and the original price is $54.00 how much should I set the price at??

Answers

it most be eleven hundred

If it’s used and you’re selling it then probably like 25-35 dollars

PLEASE HELPP ! i can’t figure out slopes at alll

Answers

Answer:possible

Step-by-step explanation:

Answer is -15/24 you have to find the “rise over run which would be m and in the rise or this case the fall would be -15 and the run would be 24

solve for W

14/W=26/39

Answers

Answer:

I think the answer is 21

Step-by-step explanation:

The answer is 21 because we can simple reduce 26/39 = 2/3. And now that you have done that all we need to do is find what 14/w = 2/3 this is quite simple as we just have to mutiply the 3*7 to get 21 as your answer. I don't know if this is correct or not but this is my best answer.

Answer:

21

Step-by-step explanation:

14 : w = 26 : 39

w = 14 * 39 : 26

w = 21

can someone answer this QUICKLY and make it make SENSE please

Answers

Answer:

3x6, (3)(6), 6+6+6

Step-by-step explanation:

The are asking which equation matches the situation,...

3 tables, 6 chairs per table = 3 x 6chairs = 18 chairs

3x6

(3)(6)

6+6+6

What they want you to do is put that equation 3x6 in the "Represent the Situation" box and the rest in the "Do not represent Situation" one

I need the same one

Identify the constant of proportionality from the table.

X: 4, 5, 7, 9
Y: 32, 40, 56, 72

Answers

Divide y by x:

32/4 = 8

40/5 = 8

56/7 = 8

72/9 = 8

The constant of proportionality is 8

Answer:

Divide y by x:

32/4 = 8

40/5 = 8

56/7 = 8

72/9 = 8

The constant of proportionality is 8

Step-by-step explanation:

help plz its due tomorrow​

Answers

Answer:

Go to Slader.com and select the grade lvl and click the page number

Step-by-step explanation:

hope this helps

Slader.com

Step-by-step explanation:

A map is drawn to a scale of 1 : 20 000.

The actual area of the grassland is 2.5 hectares. Calculate the area on the map, giving your answer in square centimetres. ( 1 hectare = 10 000 m² )

pls help thank you:>​

Answers

Answer:

0.625 cm²

Step-by-step explanation:

Scale factor:

k = 1/20000

When applied to the area consider k² as a scale factor.

The actual area:

2.5 hectares = 25000 m² = 25000*100² cm² = 250000000 cm²

The area on the map:

250000000 * (1/20000)² = 0.625 cm²

DUDE I NEEED HELP FRIST ANSWER GET BRIANLY

Answers

Answer:

b and d

Step-by-step explanation:

PLEASE HELP ME WITH THIS DS-9JF-9EJFWEF

Answers

The person above had the right answer, I checked
It’s the second choice :)

Express each of the following decimals as a percentage
0.78
solution for class 7

Answers

Answer:

78%

Step-by-step explanation:

To represent decimals as percentage, multiply by 100

0.78 x 100 = 78%

If my answer is incorrect, pls correct me!

If you like my answer and explanation, mark me as brainliest!

-Chetan K

Answer:

In this example we have: 0.78 × 100 = 78% (answer). ➥ The ease way: 1) Move the decimal point two places to the right: 0.78 → 7.8 → 78.

Step-by-step explanation:

you answer is 78%

12(43)

5 (88)

8 (63)

7 (28)

Please help me i tried to do this but I really don't get this can somebody help? plsssssssssssssssssssssssssssssss(sorry for spam)

Answers

I’m not entirely sure how to answer this without a word problem, but from what I see, all you have to do is multiply the two numbers.
12 x 43= 516
5 x 88 = 440
8x 63= 504
7 x 28= 196
Usually, when you see a number followed by another number in parentheses, like here, that means to multiply.
12(43)=516
5(88)=440
8(63)=504
7(28)=196

Express each of the following decimals as a percentage
1.35
solution for class 7

Answers

Answer:

135%

Step-by-step explanation:

To represent a decimal to percentage, multiply by 100

1.35 x 100 = 135

If my answer is incorrect, pls correct me!

If you like my answer and explanation, mark me as brainliest!

-Chetan K

the answer would be 135%

PLEASE HEEELPPP 15 POINTS PLESSEE

Answers

Answer:

200.96 yd^2

Step-by-step explanation:

Area of a circle = πr^2 where r = radius

radius = diameter/2

radius = 16/2

radius = 8

Area = π(8)^2

Area = π64

Area = 200.96 yd^2
area = 3.14r^2
16 yd / 2 = r = 8

area = 3.14(8)^2
= 3.14(64)
= 200.96 yd^2

Step by step on how to do this plz

Answers

The answer is 512!!!!!!
Other Questions
convert 8 1/10 into an improper fraction The plot of land illustrated in the accompanying diagram has a perimeter of 34 yards. Find the length, in yards, of each side of the figure a number t is less than 7 what is consumerism mean a factory produce 1188440 bulbs in one year (365 days) how many bulbs did it produce in the month of August What is a limitation of first person narration in a story?A. The other characters view and thoughts are left out.B. The thoughts of too many characters are displayed.C. The reader does not feel a connection to the narrator.D. The reader is too far removed from the story's action. Why do you say that the child's sex role identify is acquired through socialization and not determined by his or her genes? 25 mi/h _______ft/s Which scenario represents a "fit" individual in terms of evolution?1 pointThe individual can run for long time without getting tired.The individual has many children that survive and reproduce.The individual has no children and lives a long time.The individual has one child that does not reproduce. Hard work works(a) sentence B) dependent Clause 5 pencils for 15 dollers how much for each pencil Which is the equation of the line with slope o passing through the point (-3, 6)? Rewrite using exponentsAxAxAxAxAxAxAneed answer quick!!! please What is meant by the term drug delivery? Does the graph represent a function? Use the quadratic formula to find the solutions to the quadratic equation below. Check all that apply. 5x2-X-4 = 0 A. -4/5 B. 5/4C. 2/3 D. 1 E. -1 F.3/2 Which of the following represents a physical change? If brown eyes are recessive to blue eyes, then which of the following would represent a mouse with brown eyes?1.) ee2.) EE3.) Ee4.) eE the longest memory 7 stages of grieving essay 15% of 80 is 60% of what number? There were no answer choices please help!