Easy answer!! Simplify

Answer:

196 science books

Step-by-step explanation:

Check the attachment.

The total number of sicience books were 196.

Ratio is a term that is used to compare two or more numbers. It is used to indicate how big or small a quantity is when compared to another. In a ratio, two quantities are compared using division.

Let the total numbers of science books be x and maths books be y.

According to the given question.

The intial ratio of maths books to the science books is 3:7.

⇒ [tex]\frac{y}{x} = \frac{3}{7}[/tex] ...(i)

But, after the addition of 84 maths books the ratio gets changed to 6:7.

[tex]\implies \frac{y +84}{x} = \frac{6}{7}[/tex] ...(ii)

Solving the equations i and ii.

From equation i.

[tex]7y = 3x[/tex]

And from equation ii

[tex]7y + 7(84) = 6x[/tex]

Substitute the value of 7y = 3x in the above equation.

[tex]3x + 588 = 6x[/tex]

[tex]\implies 588 = 6x -3x[/tex]

[tex]\implies 3x = 588[/tex]

[tex]\implies x = \frac{588}{3}[/tex]

[tex]\implies x = 196[/tex]

Hence, the total number of sicience books were 196.

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The length of arc JL is approximately 15.08 units.

We have,

The length of an arc in a circle can be calculated using the formula:

Arc Length = (θ/360) * 2πr

where θ is the central angle in degrees, r is the radius of the circle, and 2π is approximately 6.28.

In this case, we are given the central angle JKL = 144° and the radius JK = 6 units.

Plugging in the values, we have:

Arc Length = (144/360) * 2π * 6

Arc Length ≈ (0.4) * 6.28 * 6

Arc Length ≈ 15.072 units

Rounded to the nearest hundredth,

The length of arc JL is approximately 15.08 units.

Thus,

The length of arc JL is approximately 15.08 units.

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Answer:

260

Step-by-step explanation:

18.2 hours / sign every 0.07 hours = 260 signs passed

Answer: B

Step-by-step explanation:

x -9 will get you 27 (36 is the answer), but you can try every answer and see which one makes sense, as B is the only one that makes sense (D would have been the answer if it was the absolute value which is B)

Answer:

630

Step-by-step explanation:

Just add 90 seven times. (90+90+90+90+90+90+90=630) Hope this helps! Have a good day/night.

Answer:

7 x 90 = 630

Step-by-step explanation:

If you're not sure how to solve it, i will help you!!

Write it like this on paper:

90

x 7

now multiply them diagonal, for example, you would multiply 0 x 7, and then write it down, and it gives you this:

90

x 7

  0

then you would multiply 9 times 7, which is 63, and put it in front of the 0, so you would have something like this:

90

x 7

630

Also i think you might be too young to be on here-

Answer:

6/10

Step-by-step explanation:

divide the numerator and denominator by ten to remake the hundredths as tenths

Answer

In the box, put "12" shots attempted.

Step-by-step explanation:

I learned this already and I am 100%it is correct. btw i love basketball.

Let's solve for solutions i e zeros

Answer:

(x, −x2 − 10x − 21), where −8 ≤ x ≤ −2

Step-by-step explanation:

because x is greater then it.

Answer:

the second option is correct, the one that you picked

Step-by-step explanation:

To find values of the table, plug in the given corresponding values of x or y, and constant rate of change (m) = -3/4 into y = mx.

Constant rate of change of any table or function is a comparison of how two variables are changing, which can be determined using the formula, m = change in y/change in x = [tex]\frac{y_2 - y_1}{x_2 - x_1}[/tex].

Where x and y are the coordinates of a table or functions, and m is the constant rate of change, the equation that models the relationship would be, y = mx.

The image of the table is missing, however, to complete the given table, plug in any of the given values of x or y, and constant rate of change (m) = -3/4 into y = mx.

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The product of the given expression is -3ed + 3e^2 showing that they contain two terms and the product has a degree of 2.

Equations are expressions separated by an equal sign.

Given the following expression

(–d + e)(4e + d).

We are to take the product of both expressions.

Expand to have:

(–d + e)(4e + d) = -4ed - d^2 + 4e^2 + de

(–d + e)(4e + d) = -3ed + 3e^2

Hence, there are two terms in the solution and the product is degree 2.

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Answer:

B and E

Step-by-step explanation:

Using it's concept, it is found that there is a 0.25 = 25% probability that the first ruler will have centimeter markings and the second one will not.

A probability is given by the number of desired outcomes divided by the number of total outcomes.

In this problem:

Thus, the probability is given by:

[tex]P(A \cap B) = P(A)P(B|A) = \frac{15}{25} \times \frac{10}{24} = 0.25[/tex]

0.25 = 25% probability that the first ruler will have centimeter markings and the second one will not.

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Answer:

✏The correct option is B Rs 73,333

Per capita income is the sum of all income sources, divided by the total number of people. Here the gross income of the family is = Rs (1,80,000+ 40,000) = Rs 2,20,000, the pocket money won't be added as it is an expense for the family. Then the per capita income of the family= Gross income / 3 (as the family has three members) = Rs 73,333.

Step-by-step explanation:

Percent is a relative quantity. Earning of our family is more than our friend's family (on monthly basis), by  11.11% approximately. (compared to friend's family's monthly income)

Percent is a relative quantity, as it is the measure of one quantity per 100 units of other quantity.

We want to know how much percent of 'b' is 'a'.

Then, it is calculated as:

[tex]\dfrac{a}{b} \times 100[/tex]

(in percentage)

For this case, we're specified that:

For our family:

Total monthly income = ₹(40000 + 35000 + 25000) = ₹100,000

For friend's family:

Total monthly income = ₹(45000 + 30000 + 15000) = ₹90,000

Thus, we see that friend's family's monthly is monthly ₹10,000 less than our family's monthly income.

We need to find how much percent this ₹10,000 is of their family because we need to find by how much percent our family's income is more than the friend's family's monthly income (so comparison is with respect to the monthly income of friend's family).

Let P be the percent the ₹10,000 is of the amount ₹90,000

Then, we get:

[tex]P = \dfrac{10000}{90000} \times 100 = \dfrac{100}{9} \approx 11.11 \%[/tex]

Thus, earning of our family is more than our friend's family (on monthly basis), by  11.11% approximately. (compared to friend's family's monthly income)

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Answer:

x= 26°

Step-by-step explanation:

it's a 90 degree angle as a whole so just subtract 64° from 90° to get the other angle.

Answer:

x=26

A line is 180 degrees

the square at the bottom left means 90 degrees

90+64=154

180-154=26 degrees

Answer:

It's not clear can you show clearly

Answer: c

Step-by-step explanation:

Answer:

i believe the answer is c

Step-by-step explanation:

Answer:

c) 45/60

Step-by-step explanation:

Given problem,

→ 5/6 × 9/10

Let's solve the problem,

→ 5/6 × 9/10

→ (5 × 9)/(6 × 10)

→ 45/60

Hence, option (c) is correct.

The transformation that is implemented is clockwise rotation by 270° about the origin and dilation by a scale factor of 1/2 .

The process of transformation an existing graph or equation into a new graph is known as graph transformation . The alteration of algebraic equations is a typical form of algebraic challenge.

A transformation modifies the graph of a parent function. Dilations, reflections, and translations are the three distinct types of transformation . The y-values of a function can be changed vertically, or the x-values can be changed horizontally (affects the x-values).

In the given figure we can see that the length of the side BC of the figure is 4 units, where as the length of the corresponding side in the image is

2 units . Hence the image is dilated buy a scale factor of 1/2 .

And from the transformation  figure it is clear that the image has rotated either 270° clockwise or 90 ° counterclockwise.

Hence the second option on transformation is correct.

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Answer:

D). A dilation by scale factor of 1.2, centered at the origin, followed by a 270 clockwise rotation about the origin

Step-by-step explanation:

Answer:

none of them equals 0.00007

unless a is 7 times 10 to the minus 5 power then the answer is a

Step-by-step explanation:

a=65 for 7 times 10 minus 5 unless the equation is 7 times 10 to the -5 power then the answer is a

b=70 for 7 times 10

c=700000000000 for 7 times 10 to the 11th power

d=0.007 for 7 percent times 10 percent

Answer:

median = 3.5

Step-by-step explanation:

the median is the middle value of the data sey. If there is no exact middle then it is the average of the values either side of the middle.

listing the values from the data set

1 , 1 , 2, 3 ,  4 , 4 , 4 , 5

               ↑ middle

median = (3 + 4) ÷ 2 = 7 ÷ 2 = 3.5

Answer:

I'm going to need a picture of more explanation

Answer:

Step-by-step explanation:

It is assumed GE and DA are parallel

EFH and FCA are same side interior angles and therefore supplementary

On the other hand, ∠HBA is exterior angle of triangle CHB, so it is

Now, find the value of m∠EFH

<C

Now

<C+<EFH=180

<EFH

Answer:

Step-by-step explanation:

The mnemonic SOH CAH TOA is intended to remind you of the relationship between side lengths and trig functions in a right triangle. It tells you ...

  Sin = Opposite/Hypotenuse

  Cos = Adjacent/Hypotenuse

__

QR is the side opposite angle P. PR is the side adjacent to angle P. PQ is the hypotenuse of this triangle. Translated to the given triangle, the trig functions are ...

  sin(P) = (4√11)/24 = (√11)/6

  cos(P) = 20/24 = 5/6

Answer:

11/20.I am not so sure but guessed it

1 yard = 3 feet

900 yards x 3 = 2,700 feet needed

subtract what she has:

2700-200 = 2,500 feet more needed

2,500 / 500 = 5 balls needed

answer: 5