Estimate the following sum by first rounding each decimal to the nearest hundred.

428.1 + 186.5 + 210.62

Answers

Answer 1
Answer:400+200+200

Making it 800


Related Questions

A sample of paint contains 3 ounces of blue paint and 8 ounces of yellow paint. If you have a 24 ounce can of the blue paint, how much yellow paint should you mix with it in order to make the same color as the sample? (Your answer should have numbers and units)

Answers

Answer:

64 ounces

Step-by-step explanation:

Given.

Represent blue with b and yellow with y

b = 3

y = 8

Required

What's the value of y when b = 24

Represent the given and required parameters as ratio

3 : 8 and 24 : y

Turn the ratio to an equation

3 : 8 = 24 : y

Represent as fraction

⅜ = 24/y

Multiply both sides by y

⅜y = 24

Make y the subject

y = 24 * 8/3

y = 64

Hence:

64 ounces of yellow paints is required for 24 ounces of blue paints

i need to fine the area and perimeter?

Answers

I don’t know how to eplain this but go to the right and up and plot it 3 up

A bird goes from a higher location to a lower location at a
rate of 2 meters per second,
Which equation models the change in the bird's position at 30 seconds?
A. (-30)(-2) = -60
B. 30(-2) = -60
C. 30.2 = 60
D. 30(-2) = 60

Answers

Answer:

30(-2) = -60

Step-by-step explanation:

The change in speed from a higher location to a lower location is 2 m/s, v = -2 m/s (from higher to lower)

We need to find the equation that models the change in the bird's position at 30 seconds.

Distance = speed × time

change in position = (-2) × 30

= -60

Hence, the correct option is (B).

Step-by-step explanation:

b) 10 + 2x = x +13
X =​

Answers

x is equal to 3 if not then I just we are asking the wrong questions

20 out of 45 students attended the concert; 12 out of 25 students attended the concert ​

Answers

No; 20/45 and 12/25 are not equivalent.

GIVING BRAINLIEST TO WHOEVER ANSWERS FIRST!!!
Based on the graph below, which sequence of transformations is needed to carry ABCD onto its image A'B'CD?

Answers

Answer:

The third is correct.

Step-by-step explanation:

Preimage: A(2,3), B(5,6), C(8,6), D(8,3)

Image: A'(-2, 6); B'(-5,3); C'(-8,3); D'(-8,6)

Option 3.

                Translation              Rotation 180° Clockwise

                   (x, y-9)                              (-x,-y)

A(2,3)            (2,-6)                              A' (-2,-6)

B(5,6)            (5,-3)                              B' (-5,3)

C(8,6)            (8,-3)                              C' (-8,3)

D(8,3)            (8,-6)                               D' (-8,6)

Transformation involves changing the position of a shape.

The sequence of transformation is: (d) A translation rule by [tex]\mathbf{(x,y) \to (x, y - 9)}[/tex] and then a 180 degrees clockwise rotation about the origin

The coordinates of the pre-image is:

[tex]\mathbf{A = (2,3)}[/tex]

[tex]\mathbf{B = (5,6)}[/tex]

[tex]\mathbf{C = (8,6)}[/tex]

[tex]\mathbf{D = (8,3)}[/tex]

Of the given sequence of transformations, option (d) is correct.

The proof is as follows.

First, translate ABCD by (x, y - 9)

So, we have:

[tex]\mathbf{(x,y) \to (x, y - 9)}[/tex]

[tex]\mathbf{(2,3) \to (2, -6)}[/tex]

[tex]\mathbf{(5,6) \to (5, -3)}[/tex]

[tex]\mathbf{(8,6) \to (8, -3)}[/tex]

[tex]\mathbf{(8,3) \to (8, -6)}[/tex]

Next, rotate by 180 degrees.

The rule of this transformation is:

[tex]\mathbf{(x,y) \to (-x,-y)}[/tex]

So, we have:

[tex]\mathbf{(2,-6) \to (-2,6)}[/tex]

[tex]\mathbf{(5,-3) \to (-5,3)}[/tex]

[tex]\mathbf{(8,-3) \to (-8,3)}[/tex]

[tex]\mathbf{(8,-6) \to (-8,6)}[/tex]

From the graph, the coordinates of the image are:

[tex]\mathbf{A" = (-2, 6)}[/tex]

[tex]\mathbf{ B" = (-5,3)}[/tex]

[tex]\mathbf{C" = (-8,3)}[/tex]

[tex]\mathbf{D" = (-8,6)}[/tex]

Hence, the sequence of transformation is:

(d) A translation rule by [tex]\mathbf{(x,y) \to (x, y - 9)}[/tex] and then a 180 degrees clockwise rotation about the origin

Read more about transformations at:

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gino is buying wood screws at the corner hardware store. The table shows different numbers of bags of screws and their corresponding prices.

Bags of screws price ($)
2. 10
4. 20
7. 35

According to the table,the relationship between the number of bags and the brice is proportional or not proportional​

Answers

Not proportional. If it was proportional, the price for 7 bags of screws (Who bags screws anyway?) would be 70 dollars. The price goes down by half when you buy 7 bags of screws rather than 1 or 2

Someone help me with this

Answers

Answer:

74 is the answer bruhh

Step-by-step explanation:

180 - 106 = 74

Answer is 74 hope it helps

Carlos drives 161 kilometers at a speed of 70 kilometers per hour. For how many hours does he drive?

Answers

Answer:

2.3 hours

Step-by-step explanation:

161 divided by 70 = 2.3

if Carlos drives 161 kilometers at a speed of 70 kilometers per hour then it takes 2.3 hours to drive.

What is Speed?

Speed is the time rate at which an object is moving along a path,

Given,

Carlos drives 161 kilometers at a speed of 70 kilometers per hour

From the given data distance=161 kilometers

Distance is one hundred sixty one kilometers

Speed=70km/hr.

Speed is seventy kilometer per hour.

Speed=Distance/time

70=161/time

Now cross multiply

time=161/70

Time=2.3hrs

Hence, if Carlos drives 161 kilometers at a speed of 70 kilometers per hour then it takes 2.3 hours to drive.

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Write 4.5 as a mixed number and a improper fraction.

Write your answer in simplest form.

Answers

Answer: 4 1/2 and 9/2

Step-by-step explanation: 5/10 can be simplifed into 1/2 and for the improper fraction, you just turn the 4 into halves which is 8 halves

Answer:

4.5 as a mixed number is 4 1/2 and as a improper fraction it is 9/2

In a group of 28 students, 6 study both Art and Biology.
1 studies Biology but not Art.
1 studies neither subject.
Given that a randomly selected student studies Art, what is the probability the student studies Art and Biology?

Answers

Answer:

3/13

Step-by-step explanation:

There are 28 students.  1 studies biology but not art.  1 studies neither subject.  Therefore, there are 26 students who study art.

Of the 26 students who study art, 6 also study biology.  So the probability is 6/26, which reduces to 3/13.

12 men at a car dealer sale 876 cars in a year. The sum of square for the number
of cars sold is 64716. Find the mean and standard deviation of the number of sold
cars. HELPP

Answers

Answer:

26.965

Step-by-step explanation:

Jerrod found the hypotenuse of a right triangle with legs 3 ft and 1 ft. Is his answer correct?
c2 = 32 + 12
c2 = 9 + 1
c2 = 8
c = 8

No, he setup the Pythagorean theorem incorrectly.
No, he made an error finding the square root.
No, he subtracted 1 and 9 instead of adding.
Yes, he correctly calculated the length of the hypotenuse

Answers

Answer:

The answer is no he is not correct, here's why.

C) No, he subtracted 1 and 9 instead of adding.

Step-by-step explanation:

Jerrod has found the hypotenuse, with the legs of 3 ft and 1 ft, his process is:

[tex]c^{2}[/tex] = 32 + 12

[tex]c^{2}[/tex] = 9 + 1

[tex]c^{2}[/tex] = 8

c = 8

The legs Jerrod said are 3 ft and 1 ft

so A and B of the formula of pythagorean theorem could be:

[tex]a^{2}[/tex] = (3)[tex].^{2}[/tex]

[tex]b^{2}[/tex] = (1)[tex].^{2}[/tex]

This leads us to:

[tex]3^{2} + 1^{2} = c^{2}[/tex]

which is:

9 + 1 = [tex]c^{2}[/tex]

10 = [tex]c^{2}[/tex]

In this case, Jerrod had calculated wrong by instead of adding he had subtracted.

(I don't know where he got 32 + 12, but other than that his process is correct other than calculation error)

The correct statement for given situation is,

⇒ No, Jerrod made an error to finding the square root.

What is mean by Triangle?

Any triangle is a three sided polygon, which has three vertices and three angles which has the sum 180 degrees.

We have to given that;

Jerrod found the hypotenuse of a right triangle with legs 3 ft and 1 ft.

With steps are,

⇒ c² = 3² + 1²

⇒ c² = 9 + 1

⇒ c² = 8

⇒ c = 8

Now,

We have the steps are,

⇒ c² = 3² + 1²

⇒ c² = 9 + 1

⇒ c² = 8

⇒ c = 8

Clearly, In fourth step we get;

If c² = 8

Then, c = √ 8

But here we have;

⇒ c² = 8

⇒ c = 8

Hence, He made an error finding the square root.

Therefore, The correct statement for given situation is,

⇒ No, Jerrod made an error to finding the square root.

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Which of the following correctly classifies the number -5 to all of the number sets which it belongs?

Real, Rational, Integer, Whole

Answers

Answer:

Real, Rational, Integer,

Step-by-step explanation:

Real: Most numbers are real so they just naturally fall into this category

Rational: -5 can be written as a fraction so it falls here

Integer: An integer is a number that can be positive, negative, or 0. as long as it doesnt have decmal points, it's an integer

Its not a whole number because whole numbers cannot contain a fraction, decimal, or negative value

Hope this helps!

6 Shane's rare book collection contains 40 books.
• He donates 20% of his books to the national library
• He sells 1 of his books to a rare book dealer.
• The remaining books he sells online.
How many books does he sell online?

Answers

Answer:

  31

Step-by-step explanation:

20% of 40 is 0.20·40 = 8.

Shane donates 8 and sells 1 of his books. That leaves him with 40-8-1 = 31 books that he sells online.

Answer:

It’s 20

Step-by-step explanation:

6.
Mariana and her 2 best friends
have dinner at a restaurant. The
bill totals $32.85, including tax.
The friends leave an 18% tip and
split the cost equally. How much
does each person pay?

Answers

Answer:

  $12.92

Step-by-step explanation:

The total being split 3 ways is ...

  $32.85 × (1 + 0.18) = $38.76

So each pays ...

  $38.76 / 3 = $12.92 . . . amount each person pays

A model of the Empire State building is 8 inches high. If the actual Empire State building is 1,200 feet tall, what is the scale factor between the model and the actual building?"

Answers

Answer:

Every inch is represents 150 feet

Which integer represents a loss of $20


help asap

Answers

Answer:

-20

Step-by-step explanation:

for a loss use a - for a gain use a +

solve the system:

y = 4x - 19
y = - 3x + 23

Answers

Answer:

( 6 , 5 )

Step-by-step explanation:

Solve for the first variable in one of the equations, then substitute the result into the other equation.

Write the converse of this statement.

If two angles are both obtuse, the two angles are equal.

Answers

If two angles are equal, then they are both obtuse

Answer:

If two angles are equal, then they are congruent.

Step-by-step explanation:

The original price of a handbag was $84. Carole bought it on sale for $21 off

Answers

Answer:

She got 25% off. She paid $63.

Step-by-step explanation:

what type of number is -1/2 rational irrational integer or whole

Answers

Answer:

it is a rational

Step-by-step explanation:

The number is between integers, so it can't be an integer or a whole number. It's written as a ratio of two integers, so it's a rational number and not irrational.

Simplify 3/5 * 35 - 61

Answers

Answer:

-15.6 or -15 3/5

Step-by-step explanation:

the complex solutions of which equation have a real component of 4.
(I'm not sure of what this is asking.)​

Answers

Answer:

A.

Step-by-step explanation:

I just did this problem and guessed correctly.

The complex solutions of which equation have a real component of 4 is x² - 8x +16 +21 = 0.

What is Complex number?

Complex numbers are numbers that consist of two parts — a real number and an imaginary number.

On solving all equation the correct one is x² - 8x +16 = -21.

Using discriminant method calculating the roots

x² - 8x +16 +21 = 0

x² - 8x + 37 = 0

x= -b ± √b² -4ac / 2a

x= 8 ± √ -8² - 4*1 * (37) /2a

x= 8 ± √- 84 / 2

x= 8 ± √2² *(- 21) /2

x=( 8 ± √2² *√21 i)/2

x= 8 / 2 ± 2i√21/2

x= 4 ± √21 i

So, x = 4+ √21 i and x= 4 - √21 i

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What is the quotient 8 x 10^24/2 x 10^ 8 in scientific notation? Please Help!?!?

Answers

Answer:

4x10^6

can you also please mark me as brainliest?

What is the ESTIMATED answer for 9,105 - 4,031 ?

Answer..........NOW!!

Answers

Answer:

A quick estimated answer would be 5,000-5,100

Step-by-step explanation:

HELP ASAP!!!!!!!! Select the correct answer from each drop-down menu.
The graph of the function y= x^2(x^2 - 6x + 9) has zeros of (0 and -3, -3 and 3, 0 and 3, -3 and 3)
complex zeros.
so the function has (no, two, three, four)
distinct real zeros and (no, two, three, four) complex zeros.

Answers

Answer: The answer is

1. 0 and 3

2. Two

3. No

Step-by-step explanation:

I took the test and it's right

The graph of the function has zeros of 0 and 3, two distinct real zeros, and no complex zeros.

What is a function?

It is defined as a special type of relationship and they have a predefined domain and range according to the function.

We have a function:

[tex]\rm y= x^2(x^2 - 6x + 9)[/tex]

We can write it as a:

[tex]\rm y= x^2(x^2 - 2(3)(x)+ 3^2)[/tex]

[tex]\rm y = x^2(x-3)^2[/tex]

To find the zeros equate to the function with the zero.

y = 0

[tex]\rm x^2(x-3)^2=0[/tex]

First, take [tex]\rm x^2= 0[/tex] we get:

x = 0

Now

[tex]\rm (x-3)^2=0[/tex]

x - 3 = 0

x = 3

Thus, the graph of the function has zeros of 0 and 3, two distinct real zeros, and no complex zeros.

Learn more about the function here:

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One week, seventy-two percent of the animals that cam to a veterinary hospital were dogs. If there were 230 animals total, how many were dogs

Answers

Answer:

165.6

Step-by-step explanation:

165.6 is 72% of 230  

5(x-4)=7x

ik its easy just very confused

Answers

Answer:

- 10

Step-by-step explanation:

Step 1:

5 ( x - 4 ) = 7x       Equation

Step 2:

5x - 20 = 7x       Multiply

Step 3:

- 20 = 2x      Subtract

Step 4:

x = - 20 ÷ 2     Divide

Answer:

x = - 10

Hope This Helps :)

X =10 just cause it does

f(x) = 3x^2-3x + 1
Find f (-2)

Answers

Answer:

19

Step-by-step explanation:

f(x) = 3x^2-3x + 1

Let x = -2

f(-2) = 3( -2)^2-3*-2 + 1

       = 3 * 4+6+1

       = 12 +6+1

       = 19

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