Find the product.
(7−x)(x−1)=

Answer:

x=33

Step-by-step explanation:

x+13+4x+2=180

4x+x=5x

13 plus 2 =15

5x+15=180

subtract 15 from both sides

180-15=165

5x=165

divide 5 from both sides

x=33

Answer:

Step-by-step explanation:

here cuhh

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To be complementary, the angles need to add to 90 degrees. But 55+45 = 100, so the angles are not complementary.

The angles are not adjacent either. Adjacent angles share a common line, line segment or ray. There cannot be a gap between the angles if you want adjacent angles. Think of adjacent rooms in a house in that they share the same wall.

Answer: 17

Step-by-step explanation: 2(x=3) = 6(2) 12 + 5 = 17.

The two forms of equations are identity equations and conditional equations.

By substituting the value of x=3, then we get 23.

The definition of an equation in algebra is a mathematical statement that demonstrates the equality of two mathematical expressions.

The two forms of equations are identity equations and conditional equations. All feasible values of the variables share the same identity. Only specific instances where the values of the variables coincide can result in the truth of a conditional equation. Two phrases exists connected into one by utilizing the equals sign ("=").

Let the equation be  2x² + 5

Substitute the value of x = 3, then we get

2(3)² + 5 = 23

Therefore, the value be 23.

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Answer:

Step-by-step explanation:

sugar: half - 1/6 cup , double - 2/3 cup

mirin: half - 1/8 cup , double - 1/2 cup

shoyu: half - 6 Tbsp , double 1 1/2 cup

flour: half - 5/8 pound , double 2 1/2 pounds

chicken: half - 1 1/4 pounds , double: 5 pounds

Answer:

12-c

Step-by-step explanation:

Let c be Cindy's cookies

Solution:

Each child should have gotten 12 cookies because 96/8 is 12 but Cindy got c less so the answer would be 12-c.

Width = 10 feet

Length = 40 feet

================================================

Explanation:

W = width

L = 4W = four times the width = length

P = perimeter

P = 2*(W+L)

P = 2*(W+4W)

P = 2(5W)

P = 10W

The perimeter is 100 feet.

P = 100

10W = 100 .... plug in P = 10W

W = 100/10 .... divide both sides by 10

W = 10

The width is 10 feet.

L = 4W

L = 4*10

L = 40

The length is 40 feet.

-----------------

Check:

P = 2(L+W)

P = 2(40+10)

P = 2(50)

P = 100

or another way to check is to add up the four sides {10, 40, 10, 40}

10+40+10+40 = 50+50 = 100

This confirms the answer.

Answer:

Step-by-step explanation:

Perimeter (P) = 2L + 2W

where

P = 100 feet

L = 4W

plugin values into the formula:

100 = 2(4W) + 2W

100 = 8W + 2W

100 = 10W

W = 100/10

W = 10 feet

L = 4W

L = 4(10)

L = 40 feet

P = 2(40) + 2(10)

P = 80 + 20

P = 100

third one is the correct answer.

Answer:

-270

Step-by-step explanation:

120 down to -150= 270 decrease=(-270)

Answer:

its rational

Step-by-step explanation:

The number 3.8 is a rational number.

We have,

A rational number is any number that can be expressed as the ratio of two integers, where the denominator is not zero.

Rational numbers can be written in the form a/b, where a and b are integers.

In the case of 3.8, it can be expressed as 38/10.

The numerator (38) and the denominator (10) are both integers.

Therefore,

3.8 is a rational number.

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Answer:

150.5 is median

148 is your mean

and 60 is a range

Answer:

3/2

Step-by-step explanation:

flip the second fraction so its 3/5 times 5/2

cross multiply to get rid of the 5s and get 3/2

Answer: The answer is 1.5!

Step-by-step explanation: hope I could help

Answer:

16,00

Step-by-step explanation:

9 years is the (time)

divide the 27 years by 9 to see how many times it doubles

the ans is 3

now simply divide the value which is $4,800 by the 3

this gives you 1,600

Given :

On average, a refrigerator door is opened 99 times each day.

Len has two refrigerators in his house.

To Find :

How many times in a 8−week period are the refrigerator doors opened.

Solution :

Number of times door opened for 2 refrigerator , n = 99×2 = 198.

Number of days in 8 week , d = 8×7 = 56 days.

So, total number of times doors open in a period of 8-week is :

[tex]T=n\times d\\\\T=198\times 56\\\\T=11088\ times[/tex]

Therefore, refrigerator doors are opened about 11088 times.

Hence, this is the required solution.

Step-by-step explanation:

A(2,3)=A'(-2,3)

B(2,6)=B'(-2,6)

C(5,6)=C'(-5,6)

D(5,3)=C'(-5,3)

Answer:

Step-by-step explanation:

y + 9 = -5/2(x - 10)

y + 9 = -5/2x + 25

y = -5/2x + 16

Answer:

x-12

Step-by-step explanation:

Apex

Answer: True

Step-by-step explanation:

If the triangles are congruent it means they are the same therefore ROB is congruent to PTA

Answer:

A: 1

Step-by-step explanation:

[tex]i^{16}=\left(i^2\right)^8=\left(-1\right)^8=1[/tex]

Answer: A. 1

Step-by-step explanation:

The idea of imaginary number is [i]=√-1, which usually occurs to be undefined in the real number system.

i=√-1

i^2=-1

i^3=-i

i^4=1

In the following question, it is asked to find i^16.

In order to find it, we divide 16 by 4, so to find which place it lands on.

16÷4=4

It is a perfect division, so it lands on i^4, which is 1

In this step, we are dividing both sides by -8.

The division property of equality says that if a = b, then a/c = b/c where c is any nonzero real number.

Answer:

look below

Step-by-step explanation:

72.3 = 70 + 2 + .3

7.023 = 7 + .02 + .003

.723 = .7 + .02 + .003

Hopefully this helps you :)

pls mark brainlest ;)

Answer: Y = 7/2x -5

Step-by-step explanation:

slope intercept equation:

y = mx + b

plug in what you are given

y = (7/2)x (-5)

Answer:

The number is -3

Step-by-step explanation:

Write an equation

2x+4=-10

add 4 on both sides

2x=-6

divide 2 on both sides to isolate variable

x=-3

Answer:

the answer in slope intercept is 15x+60

Given :

A colony of bacteria grows according to the law of uninhibited growth

according to the function :

[tex]N(t) = 78e^{0.025t}[/tex]            .......1)

To Find :

How long will it take for the population to reach  530 grams.

Solution :

Putting 530 in equation 1 , we get :

[tex]530 = 78e^{0.025t}\\\\e^{0.025t}=6.79[/tex]

Taking log on both sides.

[tex]0.025t = log( 6.79)\\\\0.025t=1.915\\\\t=76.6\ days[/tex]

Hence, this is the required solution.