Mathamatics 20 Points!

Answer:

22

Step-by-step explanation:

the age difference between 28-6 is 22 years

And the only time you are double the age of something the younger one is the age of the age difference so Pearl is 22 and her father is 44

Hopes this helps please mark brainliest

Answer: Pearl is 22

Step-by-step explanation:

The first number is Pearl's age and the second is her father's. 6 and 28, 7 and 29, 8 and 30, 9 and 31, 10 and 32, 11 and 33, 12 and 34, 13 and 35, 14 and 36, 15 and 37, 16 and 38, 17 and 39, 18 and 40, 19 and 41, 20 and 42, 21 and 43, 22 and 44. 22×2=44 Hope this helps.

Answer:

Step-by-step explanation:

5% of 10 is .5

Answer:

0.5

Step-by-step explanation:

When doing percent with 10, you can simply just move the decimal to the left once on the percentage.

Answer:

Step-by-step explanation:

form. Meaning you need make both fractions improper

Answer:

\(\boxed{\sf A) \:3(v + 5) = 2v - 4 + v}\)

Step-by-step explanation:

\(\sf A )\:3(v + 5) = 2v - 4 + v\)

Combine like terms:

\(\sf 3\left(v+5\right)=3v-4\)

Expand:

\(\sf 3v+15=3v-4\)

Subtract 15 from both sides:

\(\sf 3v+15-15=3v-4-15\)

\(\sf 3v=3v-19\)

Subtract 3v from both sides:

\(\sf 3v-3v=3v-19-3v\)

\(\sf 0=-19\)

\(\boxed{\sf{No\:Solution}}\)

_________________

\(\sf B )\:3(v + 5) = 2v + 15 + v\)

Combine like terms:

\(\sf 3\left(v+5\right)=3v+15\)

Expand:

\(\sf 3v+15=3v+15\)

Subtract 15 from both sides:

\(\sf 3v+15-15=3v+15-15\)

\(\sf 3v=3v\)

Subtract 3v from both sides:

\(\boxed{\sf 0=0}\)

_______________________

\(\sf C)\: 3(v + 5) = 2v + 15\)

Expand:

\(\sf 3v+15=2v+15\)

Subtract 15 from both sides:

\(\sf 3v=2v\)

Subtract 2v from both sides:

\(\sf 3v-2v=2v-2v\)

\(\boxed{\sf v=0}\)

_______________________

\(\sf D)\: 3(v + 5) = 2v - 4\)

Expand:

\(\sf 3v+15=2v-4\)

Subtract 15 from both sides:

\(\sf 3v+15-15=2v-4-15\)

\(\sf 3v=2v-19\)

Subtract 2v from both sides:

\(\sf 3v-2v=2v-19-2v\)

\(\boxed{\sf v=-19}\)

___________________________

Answer:

50.020 and 50.02

Step-by-step explanation:

Hope this helps please consider making me brainliest

Answer:

50.020 & 50.02

Step-by-step explanation:

Answer:

y= 2/5x +1

or 5x-2y=5

Step-by-step explanation:

Answer:

For A: The first function has a greater ROC

For B: The first function has a negative slope

Step-by-step explanation:

Explication for A:

We already know that the R.O.C. (slope) is 2 for the first function, so all we need to do is substitute the values in the table into the following formula: y2-y1/x2-x1

after substituting: (-3-(-6))/(0-(-1))

simplify 3/1=3, since the ROC is 3, the second equation has a greater ROC than the first

Explanation for B:

The first function described is f(x)=20-3.5x

This is because the y intercept is the starting point, or how much money she has in the gift card. She spends 3.5 dollars per week, so we add a variable to represent the number of weeks, and its negative since she is spending, not earning. We also know that the slope is negative since y is decreasing as x is increasing, on the table.

The second function described is c(m)=5x+10

This is because the equation represents the total cost of renting a calculator, so both terms are positive.

Answer:

B

Step-by-step explanation:

For the question we can eliminate c because c doesn't= up to 43.5.

for A and 87/200 simplified would=43.5 same thing with 435/1000=43.5%

We eliminate D though because when D is simplified it turns into 87/200 and then 87/200 simplifies to 43.5%

So  the lowest fraction and lowest form is 43.5/100

Hope this helps have a awesome day:)

Answer:

90 minutes

Step-by-step explanation:

Answer: 100 cm^2

Step-by-step explanation:

Answer:

Step-by-step explanation:

To find the number of bananas, we need to determine the proportion of bananas in the total number of fruits based on the given ratio.

Let's assume that the ratio of oranges, apples, and bananas can be represented by 8x, 5x, and 2x, respectively, where x is a common multiplier.

The sum of the parts in the ratio is 8x + 5x + 2x = 15x.

We know that the total number of fruits is 120. Therefore, we can set up the following equation:

15x = 120

To solve for x, we divide both sides of the equation by 15:

x = 120 / 15

x = 8

Now that we know the value of x, we can find the number of bananas by multiplying it by the corresponding part of the ratio:

Number of bananas = 2x = 2 * 8 = 16

So, there are 16 bananas in total.

We can add all the parts to the ratio and get 15. Out of 15 parts, 2 are bananas. Now we can calculate how many fruits are in one part. One fifteenth of 120 is 8, so there are 8 fruits in one part. 2 parts are bananas, so multiplying 8 with 2 gives us our answer, 16.

The height of the parallelogram is 17 inches.

Parallelogram is a type of polygon with four sides, four angles and four vertices. It is a type of Quadrilateral.

Opposite sides are parallel, and the opposite sides and opposite angles are equal.

Given that,

Length of the base of the parallelogram = 21 inches

Area of the parallelogram = 357 square inches

We have to find the height of it.

Area of a parallelogram = Base length × Height

Let h be the height.

21 × h = 357

h = 357 / 21

h = 17 inches

Hence the height of the parallelogram is 17 inches.

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Answer: I know I'm late but the answer is 17, you simply divide 357 and 21 to get 17.

Answer:

The area of the circle is 75 in^2

Step-by-step explanation:

Since it shows the radius to be 5, we simply do 5^2 to get 25. It also say to use 3 for pi. So, we would do 25*3 to get 75.

Bit late but oh well

Step-by-step explanation:

an = 3* (sqrt 2)^(n-1)   = 192    solve for n

           sqrt(2)^(n-1) = 64

                  n-1 =  log 64 / log (sqrt 2) = 12

                 n = 13  

Answer:

The answer for the equation is 27.

Step-by-step explanation:

27/3 - 3 = 27/9 + 3

27/3 simplified is 9, so 9-3=6

27/9 simplified is 3, so 3+3=6

They both equal 6 :)

Answer:

So, I can say confidently question six is correct, but I'm not the best with percentages. When I did the work I had came to the same conclusion as you, so I'm 95% sure the remaining questions are right... (scratch that, 97%, the questions weren't too confusing so I'm still going a bit lenient)

Answer:

the answer would be 10

Step-by-step explanation: use the formula  c = √(a² + b²)

Answer:

When referring to functions, the DOMAIN is made up of inputs/x-values

When referring to functions, the RANGE is made up of or outputs/y-values

Linear functions have a constant rate of change. Non-Linear functions have a rate of change that changes.

If a function is decreasing, then it is going down from left to right.

Hope this helps!

The solutions are,

1. inputs/x-values

2. outputs/y-values

3. constant

4. decreasing

The domain of a function is the set of values that we are allowed to plug into our function. This set is the x values in a function such as f(x). The range of a function is the set of values that the function assumes. This set is the values that the function shoots out after we plug an x value in.

here, we have,

we know that,

When referring to functions, the DOMAIN is made up of inputs/x-values

When referring to functions, the RANGE is made up of or outputs/y-values

Linear functions have a constant rate of change. Non-Linear functions have a rate of change that changes.

If a function is decreasing, then it is going down from left to right.

Hence, The solutions are,

1. inputs/x-values

2. outputs/y-values

3. constant

4. decreasing

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Answer:

84

Step-by-step explanation:

180° - 61° - 37°

180° is the sum of the 3 angles in any plane triangle. the 37 is reasoned from the picture

Answer:

-8

Step-by-step explanation:

In the expression (-8)(10-5-8), the -8 is right next to the (10-5-8), so the -8 would multiply the rest of the expression.

Some examples: 2(3)  = 2 × 3

6(2 + 4) = 6 × (2 + 4)

6(1 - 2(3)) = 6 × (1 - 2 × 3)

(-7)(9 - 4 - 7) = (-7) × (9 - 4 - 7)

Answer: B

Reason:

5 x 2 = 10 apple

2 x 2 = 4 bran

5 x 3 = 15 apple

2 x 3 = 6 bran

5 x 7 = 35 apple

2 x 7 = 14 bran

Answer:

its choice b

Step-by-step explanation:

Answer: 3 meters... I think

Step-by-step explanation:

Answer:

There can be 18 combinations

Step-by-step explanation:

:3

Answer:

There can be 18 combinations

Step-by-step explanation:

Answer:

The required height of the lighthouse is given as 160 ft tall.

Given that,

A scale model of a lighthouse has a scale of 1 in. : 8 ft. The scale model is 20 inches tall.

What is the scale factor?

The scale factor is defined as the ratio of the modified change in length to the original length.

What is the Ratio?

The ratio can be defined as the comparison of the fraction of one quantity towards others. e.g.- water in milk.

here,

scale factor = 1 / 8 in per ft

Now,

The actual length of the lighthouse =  20 / [1 / 8]

                                                            = 20 × 8 = 160 ft

Thus, the required height of the lighthouse is given as 160 ft tall.

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Step-by-step explanation:

Answer:

1. 6/15, or 2/5.

2. Apples cost more per pound.

Step-by-step explanation:

1. Brian reads 2/15 in 20 minutes, like we were told. It's easy to determine how much of his book he can read within an hour, by using the ratio 1/15:10. There's clearly 1/15 in 10 minutes, 2/15 in 20, 3/15 in 30, and so on. This would result in him reading 6/15's of his book in an hour.

2.

Peaches

0.6÷8/5 converts to .6 × 5/8. The result is .375.

Apples

1.75 ÷7/2 converts to 1.75×2/7. The result of this equation is .5, so therefore, the apples cost more per pound.

Answer:

90

Step-by-step explanation:

when  you multiply two negative integers they always equal positive so in this case its (-9) x (-10), you can just do 9x10 which gets u 90

Multiplying two positive integers always result in a positive integer.

Multiplying two negative integers always result in a negative integer.

Multiplying a positive or negative integer always result in a negative integer.

Answer:

42

Step-by-step explanation:

12+(5(12))/3

42

Answer:

42

Step-by-step explanation:

\(A = \frac{a+b}{2} h\)

\(A = \frac{1+6}{2} 12\)

\(A = \frac{7}{2}12\)

\(A=7*6\)

\(A = 42\)