Andre's school orders some new supplies for the chemistry lab. The online store shows a pack of 10 test tubes costs $4 less than a set of nested beakers. In order to fully equip the lab, the school orders 12 sets of beakers and 8 packs of test tubes.

1. Since t is in terms of b from the first equation, this expression can be substituted into the second equation where t appears. Write and equation that shows this substitution.

2.solve the equation for b

3.How much did the school pay for a set of beakers? For a pack of text tubes?

Answer:

1. B: 47°

2. D: 41°

3. D: 22°

4. D: 80°

5. A: 32°

Step-by-step explanation:

Hope this helps!

Answer:

2

Step-by-step explanation:

To evaluate f(x) when x = - 4, substitute x = - 4 into f(x), that is

f(- 4) = 3(- 4) + 14 = - 12 + 14 = 2

Answer:

Step-by-step explanation:

Answer:

31.17

Step-by-step explanation:

P = 4s (the sum of the four sides, which are equal)

A = s²

22 1/3 = 4s

67/3 = 4s

s = 67/12

A = (67/12²

A = 4489 / 144 = 31 25/144 or 31.173611111 ≈ 31.17

Answer:

the answer is 812.2

Step-by-step explanation:

Answer:

812.2

Step-by-step explanation:

Answer: -16

Step-by-step explanation:

Answer:

So, Y (the up and down part of the graph) equals K (The constant of proportionality, you get it by dividing Y by X), times X (the side by side part of the graph.)

Answer:

0> is greater than -5

Step-by-step explanation:

Answer:

-5 < 0

Step-by-step explanation:

hope this helps :P Hav a gud day :3

Answer:

39.3

its simple

Answer:

40 km/hr

Step-by-step explanation:

Given that:

Total distance covered in 3 hours = 60km

Speed during first 40 km = 16km/hr

Hence, time spent during the first 40 km ;

Recall:

Time = distance / speed

Time = 40 / 16

Time = 2.5 hours

Hence, speed required to cover the remaining (60 - 40) = 20km in (3 - 2.5) hours =0.5 hours

Speed = distance / time

Speed = 20 / 0. 5

Speed = 40 km / hr

Answer:

C. Ry-axis(x, y) = (-x, y)

Step-by-step explanation:

Answer: D. Rx-axis (x, y) = (x, -y)

Step-by-step explanation:

A (-3, 5)  --> A' (-3, -5)

B (2, 8)  --> B' (2, -8)

C (-4, -5)   --> C' (-4, 5)

Hope this helped!

Answer: -439

Step-by-step explanation:

Answer:

162,947,074,031,665

Step-by-step explanation:

Step-by-step explanation:

1) x≤-10

2) 2y>-5/2

y<(-5/2)/2

3)no because they are equal

4)no because we get 11 and it's not≤-9

5)yes, we get -2≥-3

Answer:

Step-by-step explanation:

the mat will be b. 4ft

The new length of the mat will be 4 ( 7 / 12). The correct option is A.

Expression in maths is defined as the collection of numbers variables and functions by using signs like addition, subtraction, multiplication, and division.

Numbers (constants), variables, operations, functions, brackets, punctuation, and grouping can all be represented by mathematical symbols, which can also be used to indicate the logical syntax's order of operations and other features.

Given that the length of the mat is 5 ( 1 / 4 ) and the length cut by 2 / 3  feet. The new length will be calculated as below:-

New length = 5 ( 1 / 4 ) - ( 2 / 3 )

New length = ( 21 / 4 )  - ( 2 / 3 )

New length = ( 63 - 8 ) / 12

New length = ( 55 ) / 12

New length = 4 ( 7 / 12 )

Therefore, the new length of the mat will be 4 ( 7 / 12). The correct option is A.

To know more about an expression follow

https://brainly.com/question/21446512

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Answer:

20..................

Step-by-step explanation:

4x-6≥6x-20

4x-6x≥-20+6

-2x≥-14

-2x/-2≥-14/-2

x≤7

the sign changed because we divided by negative number and hope it helped

Answer:

y = 1x + 2

Step-by-step explanation:

To fill in slope intercept form(y = mx + b) identify the initial value(b) and slope(m).

The initial value is the y coordinate when the x coordinate is 0. It is also known as the point where the line crosses the y axis. This point on the graph is (0, 2). So, the initial value is 2.

Slope is identified by finding a point on the graph that the line passes through and creating a right triangle to a point that is even with both point. Then, divide the y coordinate of that point by its x coordinate. One coordinate you could use is point (-2, 2). 2 divided by -2 is -1. But, since the line has a positive association, the slope is going to be a positive number. So, the slope is 1.

Now fill in the the slope intercept form.

y = mx + b ---> y = 1x + 2

Answer:

y= X + 2

Step-by-step explanation:

Answer:

The 20% coupon would be cheaper as it would come out to be 27.30 but 5 dollars off will be 29.13

Step-by-step explanation:

Step-by-step explanation:

please take the picture good ok

The answer is b becasue its subtraction

Step-by-step explanation:

Polynomials are closed under an operation if it produces a polynomial.

5x⁴, x² + 2x + 1 and x³ - 10x³ + 28x - 15

are all polynomials of x.

x - 3 + (-3)/(x - 2) is not a polynomial because x can be found in the denominator of a fractional term.

The answer is Option A.

Answer:

So let’s say I have 5 as well

triple of 5 is 5,10,15

15+5=20

my friend has 20 comic books

and I have 5

Step-by-step explanation:

brainlyest please

The expression represents the number of comic books a friend has is F = 3c + 5.

A mixture of variables, numbers, addition, subtraction, multiplication, and division are called expressions.

A statement expressing the equality of two mathematical expressions is known as an equation.

As per the given,

A friend has 5 more than triple c

Suppose a friend has an "F" number of comic books then,

F = 3c + 5

Hence "F = 3c + 5 is an expression that indicates how many comic books a friend owns".

To learn more about expression,

https://brainly.com/question/14083225

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[tex]\text {Hi! Let's Solve this Problem!}[/tex]

[tex]\text {To convert fractions into a decimal you must divide the numerator}[/tex][tex]\text {and the denominator}[/tex]

[tex]\text {\underline {Divide}}[/tex]

[tex]\text {2/5=}[/tex]

[tex]\text {Your Answer Would Be:}[/tex]

[tex]\Huge\boxed {.4}[/tex]

[tex]\text {Since we got a decimal for our answer no worries! We can always convert it to}[/tex] [tex]\text {a percentage}[/tex]

[tex]\text {\underline {Convert}}[/tex]

[tex]\text {.4 = 40 Percent}[/tex]

[tex]\text {Your Final Answer Would Be:}[/tex]

[tex]\Huge\boxed {40 Percent}[/tex]

[tex]\text {Best of Luck!}[/tex]

Answer:

1 2/5

Step-by-step explanation:

1 2/5 is what you get when divide both those numbers.

Answer: 8/25

Step-by-step explanation:

Answer:

i thinks its 30

Step-by-step explanation:

no exp