To solve a system of equations, you cannot replace a variable with an equal value or expression

Step-by-step explanation:

If we let the length of the base be b, then the height is 2b-9.

This means that (1/2)(b)(2b-9)=9

b(2b-9) = 18

2b^2 - 9b = 18

2b^2 - 9b - 18 = 0

(2b+3)(b-6)=0

b = -3/2 or b= 6 (disregard b = -3/2 as distance is positive)

This means b =6, and thus the height is 2(6)-9=3.

Answer:

58 degrees

Step-by-step explanation:

90-32

=58

~rere

Answer:

angle b measures 58°

Explanation:

As we know that, the sum of complementary angles is always equal to 90°.

Therefore,

angle a + angle b = 90°

32° + angle b = 90°

angle b = 90° - 32°

angle b = 58°

HOPE THIS HELPS AND HAVE A NICE DAY <3

Answer:

[tex]\sqrt{20}[/tex] or 4.472

Step-by-step explanation:

Value of 20

Answer:

-5/12 , -1/2 ,-7/12

Step-by-step explanation:

a = -1/3

b= -2/3

n = 5

d = b- a/n+1

d= (-2/3 + 1/3)/(5+1)

d = -1/12

numbers are :

-1/3 , -1/3-1/12 , -1/3-2/12 , -1/3-3/12, -2/3

-1/3,-5/12,-1/2,-7/12,-2/3

Answer:

4/6

Step-by-step explanation:

each number on the cube has a 1/6 Probability of getting chosen, so since we want the Probability of not choosing these 2 numbers there's 4 numbers out of six that we could get, making it 4/6

Answer: The probability would be 2/4 because there is a chance that a 2 or 5 can be rolled and there is only one two and five and 4 other numbers.

Step-by-step explanation:

Part A: The x-intercept represents the maximum amount of profit the company makes depending on the price of erasers. The intervals would be the prices of the erasers, and they represent the correlation between sale and profit. For example, when each eraser costs $4, the company makes the max profit of $270.

Part B: The average rate of change would be $91.875 and the rate represents that, on average, for each dollar that the price of the eraser jumps, the profit jumps an average of $91.875.

Part C: The constraints of the domain would be things like how the price of the erasers cannot go less than $0 or above $8; 0 [tex]\leq[/tex] x [tex]\leq[/tex] 8.

Answer:

Person above is correct I think.

Step-by-step explanation:

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[tex]\blue{\textsf{\textbf{\underline{\underline{Question:-}}}}}[/tex]

Which is true about the slope of the function y=4x+3?

[tex]\blue\textsf{\textbf{\underline{\underline{Answer and How to Solve:-}}}}[/tex]

The slope of the function y=4x+3 is 4; in equations like this one, the slope is simply the number before x.

The rise is 4, and the run is 1.

Remember, slope is also defined as "Rise/Run"

[Note:- You haven't listed any options here, could you kindly add them in the comments?]

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Answer:

Step-by-step explanation:

Answer:

see the attachment!

i hope this can help you.

Answer:

They would be paying $189

The amount of money that the customer paying for 7,000 pieces is $189.

An equation is an expression that shows the relationship between two or more variables or numbers.

Number of bags for 7000 pieces = 7000/500 = 14

Cost for 7000 pieces = $0.03 * 7000 = $210

Discount = 210 - (0.1 * 210) = $189

The amount of money that the customer paying for 7,000 pieces is $189.

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Conversion:

1 feet = 12 inch

Explanation:

a) 19 inch = 12 inch and 7 inch =  1 feet and  7 inch

b) 38 inch = 36 inch and 2 inch =  3 feet and 2 inch

Step-by-step explanation:

-7a - a

Take common -a from that equation

-a(7+1)

= -8a

Easy peasy

Answer:

- 8a

Step-by-step explanation:

- 7a - a

= - 7a + (- a)

= - 8a

____

Hope it helps ⚜

Answer:

Its ginger bread man because Sara ate the bread and it was gingery

The number of eight-digit codes could she make using the digits in her birthday is 1120 digits

Since the order of the arrangement of the digits matter, we use permutations

Permuations are the number of ways of arranging n objects in r ways. It is given as ⁿPₓ = n(n - 1)(n -2)...(n - x + 1). If we have r identical objects out of n objects, the number of arrangements are n!/r!

Now, since in the date Lucy was born 11/09/1993 has eight digits, we need to find the number of permutations the eight digits of her birthday to form an eight digit code.

Since there are 8 digits, three one's, three nine's, one 1 and one 3.

The number of permutations of these digits in an eight digit code, since we have repeated objects are n = 8!/3!3!1!1!

= 40320/6 × 6 × 1 × 1

= 40320/36

= 1120 digits

So, the number of eight-digit codes could she make using the digits in her birthday is 1120 digits

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Answer:

see below

Step-by-step explanation:

342 m/s    *  1.09361329834  yd /m  *  1 mile / 1760 yards = .21251 mi/s

1500 mi / hr  *   1609.344 meters / mile   * 1 km / 1000 m = 2414 km/hr

Answer:

Step-by-step explanation:

Elizabeth's family went to NYC for their vacation. At the gift shop on Liberty Island, Scott bought four t-shirts and five keychains for $291, and Michelle bought seven t-shirts and six key chains for $424. Find the price of each item. Each t-shirt is $31 and each keychain is $34 Each t-shirt is $37 and each keychain is $30 Each t-shirt is $30 and each keychain is $37 Each t-shirt is $34 and each keychain is $31 > Next Question

Previous question

Answer:

  congruent by the SSS congruence postulate

Step-by-step explanation:

The hash marks tell you each side of one triangle has a congruent corresponding side in the other triangle.

__

The triangles are congruent by the SSS congruence postulate.

Answer:

answer is B, 9 units

Step-by-step explanation:

Answer:

C) 15.5 units

Step-by-step explanation:

Answer:

If the slope is 7/4x : y=-4/7x-6/7

Step-by-step explanation:

1) Find reciprocal of slope: 7/4 becomes -4/7

2) insert into equation y=mx+b: y=-4/7x+b

3) solve for "b" by substituting x and y with the point (2,-2): -2=-4/7(2)+b

b=-6/7

4) write final equation: y=-4/7x-6/7

Answer

great common factor of 14 and 21 is 15. so your answer is 15

Answer: 1.5 (Decimal Form) or 3/2 (Exact Form)

Step-by-step explanation:

So what you do is put the whole number which in this case is 4, into a fraction so your problem will look like this:

3 / 8 * 4 / 1 =

Then, you will have to multiply all the numbers across:

3 * 4 = 12

8 * 1 = 8

Your answer will then look like this:

12 / 8

You will have to simplify with the greatest common factor which would be 4:

12 / 4 = 3

8 / 4 = 2

So, you get your answer:

3 / 2 or 1.5

The value of x in degrees will be  x=78.46

The branch of mathematics dealing with the relations of the sides and angles of triangles and with the relevant functions of any angles.There are different angles like Cos,Sin,tan,cosec,sec and cot in the trigonometry.

It is given that:

We have the value of CosX=0.2 we will take inverse of the value 0.2 and find the angle X. after taking the cos inverse of the value 0.2 we found out the angle X=78.46

Cos X   =     0.2

X      =    Cos¹ 0.2

X      =     78.46°

Hence the value of x in degrees will be x=78.46

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Answer: $7000

Step-by-step explanation:

7 * 1000 = $7000

Answer:

= (2p-3)-(5-7p)

= 2p-3-5+7p

= 2p+7p-3-5

= 9p-8

Answer:

16

Step-by-step explanation:

First, sub in the variables for the given numbers.

12 - 2(2) + 8

Then, use PEMDAS to find your answer.

12 - 2(2) + 8

12 - 4 + 8

8 + 8

16

Last, you get 16.