can sb please help me

Answer:

The length of a pencil is 4.5 inches. The length of a crayon is 2.1 inches.

Step-by-step explanation:

Let pencils be p

Let crayons be c

6 pencils and 5 crayons are 37.5 inches. This will be:

6p + 5c = 37.5 ........ equation 1

7 pencils and 6 crayons are 44.1 inches. This will be:

7p + 6c = 44.1 ........ equation 2

Multiply equation 1 by 7

Multiply equation 2 by 6

42p + 35c = 262.5 (3)

42p + 36c = 264.6 (4)

Subtract 4 from 3

c = 2.1

Plug the value of c into equation 1

From equation 1

6p + 5c = 37.5

6p + 5(2.1) = 37.5

6p + 10.5 = 37.5

6p = 37.5- 10.5

6p = 27

p = 27/6

p = 4.5

hope this helps

please can i get brainliest

Answer:

2

Step-by-step explanation:

Answer:

the answer is 2 because first of all if the diameter is 4 the radius is 2 because the radius is half of the diameter so the answer is 2.

Step-by-step explanation: give brainliest to the first people that answer it first.

Answer:

1438 cm²

Explanation:

Rectangular prism area:  2(length × width + width × height + length × height)

Here given:

Find Surface Area:

2(19 × 11  + 11 × 17 + 19 × 17) = 2(719) = 1438 cm²

Answer:

1. is 2

2. is right and 10

Step-by-step explanation:

just took the test will explain if needed

From the triangles given, ∆ DEF was dilated to ∆ ABC

The dilated triangle is = ∆ ABC

To find the scale factor uses for the dilation of the triangle, the length of the triangle AC and DF are considered.

AC from the scale= -2 -(-7)

= 7-2= 5

DF= 9-6.5

= 2.5

Therefore the scale factor = 5/2.5 = 2

And since the scale factor of dilation is 2 this means that ∆ A' B' C' can be translated to the 0.5 by 2 units.

Learn more about triangles here:

https://brainly.com/question/2644832

#SPJ2

Answer: The inference to make using the median is: online customers by an average of five packs compared with walking customers who buy an average of two packs online.

Step-by-step explanation:

The inference based on the median is: online customers by an average of five packs compared with walking customers who buy an average of two packs online.

The median is the middle value, which has equal data points on the right and to the left.

The median for online customers is between 5 and 6.

The median for walk-in customers is 2.

Therefore, the inference to make using the median is: online customers by an average of five packs compared with walking customers who buy an average of two packs online.

Answer:

the answer is 25 thats what i got

Step-by-step explanation:

Answer:

40 feet

Step-by-step explanation:

the diameter is just Rx2 (R being the radius)

Answer:

Use the order of operations PEMDAS:

Expression 1

  6 ⋅ 7 - 32 ⋅ 9 + 43

= 42 - 288 + 43

= -246 + 43

= -203

Expression 2

Insert parentheses around 5 + 4:

  (5 + 4) · 2 + 6 - 2 ⋅ 2 - 1

= 9 · 2 + 6 - 2 ⋅ 2 - 1

= 18 + 6 - 4 - 1

= 24 - 4 - 1

= 20 - 1

= 19

Answer:

Expression 1

 6 ⋅ 7 - 32 ⋅ 9 + 43

= 42 - 288 + 43

= -246 + 43

= -203

Expression 2

Insert parentheses around 5 + 4:

 (5 + 4) · 2 + 6 - 2 ⋅ 2 - 1

= 9 · 2 + 6 - 2 ⋅ 2 - 1

= 18 + 6 - 4 - 1

= 24 - 4 - 1

= 20 - 1

= 19

Step-by-step explanation:

Answer:

Area, 199.5, Perimeter, 46.45

Step-by-step explanation:

1. Decompose it into 2 shapes; rectangle and triangle

2. Find the area of the triangle; 10cm×7.6cm=76×1/2=38

3. Find the area of the rectangle; 21.25cm×7.6cm=161.5

4. Add the products 38+161.5=199.5

Perimeter:

1. Decompose it into 2 shapes; rectangle and triangle

2. Find the perimeter of the triangle; 10cm+7.6cm=17.6

3. Find the perimeter of the rectangle; 21.25+7.6=28.85

4. Add the sums 17.6+28.85=46.45

Answer:

True

Step-by-step explanation:

To find true or false

Using the properties of logarithms, the left side of the given equation .logb b^2r=2r

, is equivalent to logb b^2r = 2x logb b

(use Power Rule)

=2x(1)

=2x

Hence, the given statement is a true statement.



Answer:

[tex]23=0.50r+22[/tex]

Step-by-step explanation:

y=total amount of money

b=cost of admission

m=cost per ride

r= amount of rides

How to solve:

Step 1: Set up the equation in [tex]y=mx+b[/tex] format.

[tex]23=22+0.50r[/tex]

Step 2: Subtract 22 from both sides of the equation.

[tex]23-22=22+0.50r-22[/tex]

Step 3: Divide both sides by 0.50

[tex]\frac{1}{0.50} =\frac{0.50r}{0.50}[/tex]

Step 4: You are left with your answer.

[tex]r=2[/tex]

Answer:

4

Step-by-step explanation:

2+2+2+3+3+4+5+7+8

=36

36/9

=4

Answer: [tex]5x-6[/tex] and  [tex]3x+2x-2-4[/tex]

Step-by-step explanation:

[tex]3x+2(x-1)-4[/tex]

[tex]Simplify[/tex], [tex]Evaluate[/tex], [tex]andFactor[/tex] [tex]the[/tex] [tex]expression[/tex].

[tex]add[/tex] [tex]the[/tex] [tex]similar-terms[/tex] [tex](3x[/tex] [tex]can[/tex] [tex]be[/tex] [tex]added[/tex] [tex]with[/tex] [tex]2x[/tex] [tex]and[/tex] [tex]-2[/tex] [tex]can[/tex] [tex]be[/tex] [tex]added[/tex] [tex]with[/tex] [tex]-4):[/tex]  [tex]5x-6[/tex] is correct!

[tex]Destroy[/tex] [tex]the[/tex] [tex]parenthesis[/tex] [tex]applying[/tex] [tex]applying[/tex] [tex]property[/tex] [tex]which[/tex] [tex]would[/tex] [tex]make[/tex]:[tex]3x+2x-2-4[/tex] [tex]the[/tex] [tex]correct[/tex] [tex]option[/tex].

Learn more: https://brainly.com/question/13361136

Answer:

First and the second

Step-by-step explanation:

3x + 2(x − 1) − 4

It is being simplified so both of the equations are equivelent to 3x +2(x-1)-4

Answer:

Naja earns 64$ per 8 hours of work

Step-by-step explanation:

2 steps:

Step 1

Divide 5 by 40 to find how much dollars per hour

[tex]\frac{40}{5} =8[/tex]

8, so that means that Naja earns $8 per hour

Step 2

Multiply 8 by 8 to get final answer

[tex]8*8=64[/tex]

$64, so that means that Naja earns 64$ per 8 hours of work

Answer:

$64 for 8 hrs.

Step-by-step explanation:

There are 2 ways you could do this. The easy way is the first one.

1. Divide 40 by 5 and you get 8. 2. After you get that answer, then you have to multiply 8x8=64. So she gets $64 per hour.

Then there is the harder one. This is if they say to show your work.

1. Start by putting it in this format:

5 -- 40

6 -- 48

7 -- 56

8 -- 64

So you basically just add 8 each time to get 64.

Hope this helps! Please give brainlist!

Answer:

probability=number of favorable outcome÷total number of favorable outcome

Step-by-step explanation:

A the probability that all children are boys =3÷3 =1

same answer with the girl children

Answer:

A) 1/8 or 0.125 for three girls and three boys

B) 3/8 or 0.375 for two girls and one boy

C) 3/8 or 0.375 for two boys and one girl

D) 1/2 or 0.50, explanation provided below

Step-by-step explanation:

Part A) If a family has three children, the probability that all three children are girls can be found by first finding the probability of one child being a girl. The probability of being a girl in this case is 1/2. The probability of three girls is thus (1/2) * (1/2) * (1/2) = 1/8 or 0.125. The probability of one child being a boy is 1/2, and so rather than repeating the above steps, we can simply say that it is also 1/8 or 0.125.

Part B) For this part, it is probably easiest to list the combinations:

BBB

BBG

BGB

BGG

GBB

GBG

GGB

GGG

There are three outcomes with two girls and one boy and thus the probability is 3/8.

Part C) Looking at the combinations above, we also see that there are three outcomes with two boys and one girl, and thus the probability is 3/8.

Part D) The fact that Josh has a younger brother does not affect the probability that the third child will be a girl or boy. The probability of the third child being a boy is still 1/2.

Answer:

[tex]x = 1[/tex]

Then the answer is C

Step-by-step explanation:

1) Set a linear equation

[tex] \frac{2}{100} = \frac{x}{50} [/tex]

2) Cross multiply

[tex]100x = 2 \times 50[/tex]

3) Multiple the right side

[tex]100x = 100[/tex]

4) Divide both side by 2

[tex] \frac{100x}{100} = \frac{100}{100} [/tex]

5) Solving the linear equation

[tex]x = 1[/tex]

The answer is (C)

It's pretty easy, take the example of this fraction... [tex]\frac{2}{4}[/tex]

What you do in here is that you note down the factors of 2 and 4 over here.

Factors of 2 and 4:

2 = 1, 2

4 = 1, 2, 4

Now, you see that the GREATEST Common Factor (GCF) over here is 2.

Now that we see the GCF of 2 and 4 is 2, what you do next is, you have to divide 2 by 2 AND 4. When you do this, you will get your results. 2 = 1 and 4 = 2, now put this in the fraction form again, meaning switch 2 with 1, and 4 with 2 in the fractions... [tex]\frac{1}{2}[/tex]

So your simplified fraction is [tex]\frac{1}2}[/tex]!

Answer:

A fraction is in simplest form when the top and bottom cannot be any smaller, while still being whole numbers.

You can simplify a fraction by dividing the top and bottom by the greatest number that will divide both numbers exactly. They must stay whole numbers.

Hopefully this picture helps explain :)

Answer:

61/2

Step-by-step explanation:

Answer:

correct answer is : 19 inches

Step-by-step explanation:

Answer:

The answer is 6

Step-by-step explanation:

it is 6 (y = 12x / 10)

Answer: 40

Step-by-step explanation:

480/20=960/x Cross multiply

19200=480x

x=40

Answer:

40 teachers are needed

Step-by-step explanation:

480 : 20 = 24 : 1

960/24 = 40

= 960:40

Answer:

V= AOB × H

Step-by-step explanation:

The volume (V) of a prism is the area of the base (B) times the height (H).

Answer:

D. 270

Step-by-step explanation:

9 + 9 = 18

18 x 15 = 270

Answer:

270

Step-by-step explanation:

1. divide the bases into separate numbers and add them together. 18.

2. multiply by the height, which is the dotted line. The result is 270.

Step-by-step explanation:

Here x and 80° are supplementary angle so...

x + 80° = 180°

x = 180° - 80°

x = 100°

Answer:

d≈24.49

Length 20

Width 10

Height 10

formula:

[tex]d= \sqrt{l^2+w^2+h^2} = \sqrt{20^2+10^2+10^2} = 24.4949[/tex]

Have a good day!