STAAR Category 3
Grade 8 Mathematics
TEKS 8.100
5. Two picture frames are similar. The dimensions of the smaller frame are 4 inches by 9 inches. The
larger frame has dimensions 12 inches by x inches.
4 inches
12 inches
9 inches
x inches
What is the perimeter of the larger frame?
A 30 inches
B 42 inches
C 78 inches
D 96 inches

Answer:

Basically, because when you want to find the difference between 2.4 and 1.7 using models, you take away the same amount of squares as if you were finding the difference between 240 and 170 using models.

Answer:

The range would be (-infinity,infinity)

Step-by-step explanation:

Range is the y values. And the y values are going up and down forever to infinity and negative infinity

Answer:

the answer is the second one

Answer:

876997# nebulated ny 653 answere is simple 2

Step-by-step explanation:

Answer:

Step-by-step explanation:

Answer:

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Answer:

Yes! You are correct!! Just add the unit ($).

Step-by-step explanation:

Although this question was asked a while ago, it's better to leave it answered rather than leaving it unanswered.

In this question, we are told that Carl earned $25 from mowing lawns on Friday. Carl also earned some amount of money from raking leaves for 3 hours. In the end, he spends 12 dollars on the movies. We need to find out how much money he has left.

Since he earns 6 dollars an hour for raking leaves, we can multiply $6 by 3 hours to get $18 for raking leaves for 3 hours.

We can add this to his earnings on Friday, which will get us $43 as his total balance.

He then spends 12 dollars, so we subtract 12 from 43. This means Carl will only have $31 left.

Hence, your answer is correct! Just don't forget the unit. Have a great day!!! :)

The surface area of the cylindrical gift box given radius (3x+4) and height 3 times the radius, when calculated and simplified, results in the polynomial[tex]6\pi x^2 + 24\pi x + 32\pi[/tex]  in standard form.

The surface area of a cylinder is calculated by the formula 2πr(h + r), where r is the radius and h is the height of the cylinder. Given the radius r = 3x+4 and the height h = 3*r which is 3*(3x+4), you can substitute these values into the formula. So, the surface area, A = 2π(3x+4)[3*(3x+4) + (3x+4)].

Simplifying, we get A = 6πx(3x+4)+8π*(3x + 4). This can be further simplified into [tex]A = 6\pi x^2 + 24\pi x + 32\pi[/tex], which is the surface area of the cylinder in terms of the variable x in standard form.

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Answer: No

Step-by-step explanation:

Finding equivalent ratios is just like finding equvalent fractions.

For Example: 3/6 = 1/2 that also means 3:6 will equal 1:2

Good Luck!

Answer:

need options?

Step-by-step explanation:

Answer:

Step-by-step explanation:

$7 - 4x = $15

-4x = $15 - $7

-4x = $8

x = $8/-4

x = $-2

So,

$8x + $2

= $8(-2) + $2

= $-16 + $2

= $ -14

Answer:

d

Step-by-step explanation:

The correct Equation is P x (1 + 0.272/12)¹² + 96 = P x (1 + 0.303/12)¹².

APR is the price of using a credit card to borrow money. It is the annual interest rate that you will be charged if you carry a balance, and it frequently varies between credit cards.

For example, you may have one card with an APR of 9.99% and another with an APR of 14.99%.

Given:

Payments are done per month.

So, need to be converted to monthly figures.

APR per month = 27.2% /12

As, 1 year= 12

= P x (1 + 0.272/12)¹² + 96

Credit Card B deal over a year

= P x (1 + 0.303/12)¹²

Thus, the Principal for both cards to offer the same deal will be

P x (1 + 0.272/12)¹² + 96 = P x (1 + 0.303/12)¹²

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Jason bought 38 stamps and 17 postcards

Solution:

Let "a" be the number of stamps bought

Let "b" be the number of postcards bought

The number of stamps was 4 more than twice the number of post cards

Therefore,

Number of stamps bought = 4 + 2(number of post cards)

a = 4 + 2b ------- eqn 1

Jason bought both 41 cent stamps and 26 cent postcards and spent $20.28

1 dollar is equal to 100 cents

Thus, $ 20.28 is equal to 2028 cents

Therefore, we frame a equation as:

[tex]41 \times a + 26 \times b = 2028[/tex]

41a + 26b = 2028 ----------- eqn 2

Let us solve eqn 1 and eqn 2

Substitute eqn 1 in eqn 1

41(4 + 2b) + 26b = 2028

164 + 82b + 26b = 2028

164 + 108b = 2028

108b = 1864

[tex]b = 17.25 \approx 17[/tex]

Substitute b = 17 in eqn 1

a = 4 + 2(17)

a = 4 + 34

a = 38

Thus Jason bought 38 stamps and 17 postcards

Answer:

Step-by-step explanation:

population of Seminole tribe is 1/4 the population of the Navajo tribe.

the population of the Seminole tribe is 224,000.

let x represent the population of the Navajo tribe

224,000 = 1/4x

224,000 * 4 = x

896,000 = x <===

Answer:

Step-by-step explanation:

the anser is A

The probability that one of these students is male and dislikes peas would be 32 %.

Probability refers to a possibility that deals with the occurrence of random events.

The probability of all the events occurring need to be 1.

We can find using the given information.

We have the number of female students that like peas is 64, and the total number of students is 200. That gives us the following fraction.

64/200

Now, turn this into a percentage by making the denominator 100. Which is done by dividing the numerator and denominator each by 2, since the denominator is 100.

32/100 = 32%

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Involves calculating probabilities of drawing marbles from a bag. Simply put, probability is the likelihood that something will occur. When we're not sure how something will turn out, we can discuss the likelihood of different outcomes, or their probabilities. Statistics is the study of events that follow a probability distribution. This problem requires the usage of probability.

The outcomes more likely than not when drawing two marbles from the bag without replacement:

Pulling a yellow marble then a green marble (Probability calculation: (2/9) * (4/8) = 1/9)

Pulling a green marble then a yellow marble (Probability calculation: (4/9) * (2/8) = 1/9)

There are 9 tiles in total. With 'P' appearing twice, the chance of drawing 'P' (2/9) is more than 50%, making it more likely than not.

let's break it down step by step.

First, let's find out how many tiles there are for each letter:

- I: 1

- M: 1

- P: 2

- O: 1

- S: 1

- B: 1

- L: 1

- E: 1

Total number of tiles = 1 (I) + 1 (M) + 2 (P) + 1 (O) + 1 (S) + 1 (B) + 1 (L) + 1 (E) = 9 tiles

Now, let's find out the probability of each letter being drawn:

- Probability of drawing I: 1/9

- Probability of drawing M: 1/9

- Probability of drawing P: 2/9

- Probability of drawing O: 1/9

- Probability of drawing S: 1/9

- Probability of drawing B: 1/9

- Probability of drawing L: 1/9

- Probability of drawing E: 1/9

Now, let's calculate the probability of drawing a letter that appears more than once.

In this case, the letter 'P' appears twice. So, the probability of drawing a 'P' is 2/9.

Now, let's determine which outcomes are more likely than not.

The probability of an event being more likely than not is greater than 50%.

From our calculations, the probability of drawing 'P' (2/9) is greater than 50%, making it more likely than not to draw 'P'.

Thus, the outcome of drawing 'P' is more likely than not.

Answer:

1

Step-by-step explanation:

This is because 13 is a primary number

Final answer:

The number 1 is a factor of 13, which is a prime number with only two factors: 1 and 13 itself.

Explanation:

One number that is a factor of 13 is 1. This is because the factors of a number are integers that can be multiplied together to produce the original number. Since 13 is a prime number, its only factors are 1 and itself, 13. Factors are integers that multiply together to result in the original number. In the case of 13, the only combinations that yield 13 are 1 × 13 and 13 × 1. Since prime numbers have no other divisors besides 1 and the number itself, there are no additional factors for 13. This characteristic distinguishes prime numbers from composite numbers, emphasizing their unique role in number theory and their indivisibility by integers other than 1 and the number itself.

Answer:

12 months

Step-by-step explanation:

A company employs 72 workers. It plans to increase the number of employees by 6 per month.

Let x = number of months when the company increases the number of workers. Then in x months, the number of workers increases by 6x and the total number of workers will be (72+6x).

They plan to increase the number of workers until it has twice its current workforce. So

[tex]72+6x=2\cdot 72[/tex]

Solve this equation:

[tex]72+6x=144\\ \\6x=144-72\\ \\6x=72\\ \\x=12[/tex]

Answer:

1661.4

Step-by-step explanation:

13000 x 0.1278=1661.4

If $1 US Dollars is equivalent to .1278 Chinese yuan, converting $13,000 to yuan gives us: 1,661.4 yuan

A currency's exchange rate is defined as the value of one currency in relation to another currency,

We are told that the exchange rate is expressed as:

$1 US Dollars is equivalent to 0.1278 chinese yuan

We can rewrite this as:

0.1278 chinese yuan =  $1 US Dollars

Thus:

$13000 = (13000 * 0.1278)/1

= 1,661.4 yuan

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Answer:

They are not equivalent

Step-by-step explanation:

We want to determine if 1/2(4 - 2x); 2 - 2x are equivalent.

Let us take the first expression and simplify to see if we can get the second expression.

[tex] \frac{1}{2}(4 - 2x)[/tex]

Let us expand using the distributive property to get:

[tex] \frac{1}{2} (4 - 2x) = \frac{1}{2} \times 4 - \frac{1}{2} \times 2x[/tex]

This simplifies to:

[tex]\frac{1}{2} (4 - 2x) = 2 - x[/tex]

Therefore 1/2(4 - 2x); and 2 - 2x are not equivalent

Answer:

x=-5, y=-1. (-5, -1).

Step-by-step explanation:

6x-6y=-24

y=3x+14

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

6x-6(3x+14)=-24

6x-18x-84=-24

-12x-84=-24

-12x=-24+84

-12x=60

x=60/-12

x=-5

y=3(-5)+14=-15+14=-1

Answer:

4x5=20               20 feet is the area

Step-by-step explanation:

50.27 in²

Step-by-step explanation:

The area is given as;

A= 16π in²

The symbol π is the pie

The value of π=3.14159265359

Finding the area in terms of pi could mean replacing π with the actual value as;

A=16×3.14159265359 = 50.27 in² (answer in 2 decimal places)

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Answer:

0

Step-by-step explanation:

Because the equation of this graph is y=-1, where this graph's slope is 0 and the y-intercept is -1.

Answer: [tex]6+x[/tex]

Step-by-step explanation:

In mathematics,  the "Bar models" are used to represent known an unknown quantities and they are very useful to solve problems that involve Addition, Subtraction, Multiplication and Division.

For this exercise you need to analize the data given and observe the bar model provided in the picture attached.

In this case, you can identify two parts in the bar model. These are:

[tex]6[/tex] and [tex]x[/tex]

Then, knowing those parts, you need to find the whole.

You can notice in the bar model that, if you combine (or add) the bars that represent [tex]6[/tex] and the bar that represents [tex]x[/tex], you will obtain the whole bar.

So, you can identify that the bar model represents an Addition.

Therefore, based on the explained before, you can conclude that the algebraic expression shown in the given bar model is the following:

[tex]6+x[/tex]

Answer:

B . [tex]\frac{3 n}{n+3}[/tex]

Step-by-step explanation:

Arithmetic sequence:-

Step1:

Given sequence is [tex]\frac{3}{4} ,\frac{6}{5} ,\frac{9}{6} ,\frac{12}{7} ,\frac{15}{8}[/tex]

Above sequence taking numerator terms

3,6,9,12,15 are in arithmetic progression

First term a= 3 and difference d = 3

now n t h term of given sequence is

[tex]t_{n} =a+(n-1)d[/tex]

now substitute a =3 and d=3

[tex]t_{n} = 3+(n-1)3 = 3+3 n-3=3n[/tex]

Step2:-

Above sequence taking denominator

4,5,6,7,8...

here a=4 and d=1

[tex]t_{n} =a+(n-1)d[/tex]

[tex]t_{n} =4+(n-1)1[/tex]

[tex]t_{n}=3+n[/tex]

Final answer is the general term of given sequence is

[tex]t_{n} = \frac{3n}{3+n}[/tex]

We know there is a total of 100 cups of tea sold and that there are two types of teas involved.

x = tea 1

y = tea 2

We can set up two equations and use substitution to solve:

x + y = 100 cups of tea sold total

One of the teas sold 5 times as much as the other. Let's believe that this was tea 1:

x = 5y (5 times as much means multiplication, and 'other' means y)

If x = 5y, then this must be true for the first equation. So we'll test this by plugging it in:

5y + y = 100

6y = 100

y = about 16.67

Now we can use this number to solve for x in the original equation:

x + 16.67 = 100

x = 83.33

Answer: 32 sides

Step-by-step explanation:

Formula for interior angle of a polygon = ( n - 2 )180°, where n is the number of sides of the polygon

Now equate the formula to 5400°

( n - 2 ) × 180° = 5400°

open bracket by multiply by 180°

180n° - 360° = 5400°

          180n° = 5400° + 360°

          180n° = 5760

                 n = ⁵⁷⁶⁰/₁₈₀

                 n = 32

so the polygon has 32 sides

Answer: x = -2

Step-by-step explanation: To solve for x, in the equation you see here, our goal is to get x by itself.

Our first step will be to isolate the term containing x which in this case is 4x. To isolate 4x, we have to get rid of the +3 by subtracting 3 from both sides of the equation. On the left, +3 and -3 cancel out and we're left with 4x. On the right, -5 - 3 simplifies to -8.

Now we have the equation 4x = -8.

To get x by itself, we divide both sides of the equation by 4. On the left, the 4's cancel and on the right, -8 divided by 3 is -2 so x = -2

x = -2

4x + 3 = −5

Step 1: Subtract 3 from both sides

4x + 3 − 3 = −5 − 3

4x = −8

Step 2: Divide both sides by 4

4x / 4 = -8 / 4

x = -2

Answer:

c=32.13

Step-by-step explanation:

The value of C of the equation 15.3= C/2.1 is 32.13.

Two algebraic expressions having same value and symbol '=' in between are called as an equation.

Given equation:

15.3= C/2.1

To find the value of C:

Using cross multiplication,

C = 15.3 x 2.1

Solving,

C = 32.13

Therefore, the value of C = 32.13

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