what is subtract 4 from 20 as a numerical expression

Answer:

find all numbers, stick together o make an uqaion and solve . simplifi if needed

Step-by-step explanation:

BC²=AC²-AB²=13²-12²=169-144=25 <=> BC=✓25=5

Answer:

18c

= 18(24)

= 432

For 24 parts, 432 holes need to be drilled.

Step-by-step explanation:

Answer:

Its the last one

Step-by-step explanation:

Answer:

41.7

Step-by-step explanation:

V = 1/3*a^2*h

Answer:

41.67 (42 cm^3)

Step-by-step explanation:

I used volume method and got that answer

[tex]x^{2}[/tex]Answer:628.31 ft

Step-by-step explanation:

v=[tex]\pi[/tex]r^2h

v=(3.14159)(5)^2(8)

v=628.31

Answer:

36 minutes

Step-by-step explanation:

The key is to get the same amount of time for each.

9 * 12 = 108

At 12 minutes per job,

in 108 minutes Alyssa could do

108/12 = 9 jobs

At 9 minutes per job,

Together in 108 minutes they could do

108/9 = 12 jobs

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

In 108 minutes Mirada does

12 - 9 = 3 jobs

108/3 = 36 minutes per job

Step-by-step explanation:

area of rectangle (a1)=b×h

area of triangle=1/2 ×b×h

total area of arrow=a1+a2

Answer:

Step-by-step explanation:

You will find authentic some of the areas of 3 shapes, two of them are triangles, and one is rectangle.

The formula for calculating the area of right angle triangle is A= 1/2bh

The formula used to find the area of rectangle is A= W×L

A1+A2+A3

= 1/2b1h1+ 1/2b2h2+ W×L

1/2(10inches)(30inches)+ 1/2 (10 inches)(30 inches)+ (30 inches)(20 inches)

=150 inches²+ 150 inches²+ 600inches²

=900 inch²

Answer:

slope=0

hope this helps

have a good day :)

Step-by-step explanation:

Answer: 30 boxes of cupcakes

Step-by-step explanation:

Answer:

yea top is right i 29.6 estimate yea 30

Answer:

x=6

Step-by-step explanation:

Answer:

Hello There!!

Step-by-step explanation:

6x=36

÷6 ÷6

x=6

hope this helps,have a great day!!

~Pinky~

Answer:

n=12

Step-by-step explanation:

1/4n+7=10

n+28=40

n=12

Answer:

87.2

Step-by-step explanation:

Answer:

46.6.

Explination:

99.2 - 6 is 93.2. 93.2 divided by 2 is 46.6.

Step-by-step explanation:

a)

82+OCE=90°{ tangent}

0CE=8°

OCE=OEC (base angle of isosceles triangle r equal}

8+8+a=180°(sum of angle of triangle)

a=180-16

a=164°

b)d+BEC=180°

BEC=122°

BEO=BEC-OEC

b=114°

stay safe healthy and happy.

Answer:

CEO=ECO=90-82

=8

COE=180-(16)

=164

a=164

DBO=DCO=90

BOC=180-58

=122

BOE=360-(122+164)

=74

b=180-74/2

=53

Equivalent expressions are expressions that have equal values

The equivalent expressions of [tex]y^{-8}y^3x^0x^{-2}[/tex] are [tex]x^{-2}y^{-5}[/tex] and [tex]\frac{1}{x^2y^5}[/tex]

The expression is given as:

[tex]y^{-8}y^3x^0x^{-2}[/tex]

Express x^0 as 1

[tex]y^{-8}y^3x^0x^{-2} = y^{-8}y^3 \times 1 \times x^{-2}[/tex]

Apply law of indices

[tex]y^{-8}y^3x^0x^{-2} = y^{-8 + 3}\times x^{-2}[/tex]

[tex]y^{-8}y^3x^0x^{-2} = y^{-5}\times x^{-2}[/tex]

Remove the product sign (x)

[tex]y^{-8}y^3x^0x^{-2} = y^{-5}x^{-2}[/tex]

Rewrite as:

[tex]y^{-8}y^3x^0x^{-2} = x^{-2}y^{-5}[/tex]

Rewrite as positive exponents

[tex]y^{-8}y^3x^0x^{-2} = \frac{1}{x^2y^5}[/tex]

Hence, the equivalent expressions of [tex]y^{-8}y^3x^0x^{-2}[/tex] are [tex]x^{-2}y^{-5}[/tex] and [tex]\frac{1}{x^2y^5}[/tex]

Read more about equivalent expressions at:

https://brainly.com/question/2972832

Answer:105.60

Step-by-step explanation:your welcome

Answer:

8(10+b), 10-8b, 10+8b, 8(10-b), 8b-10

Step-by-step explanation:

1. Sum of 10 and b = (10 + b), times 8 = 8(10 + b)

2. Product of 8 and b = 8b, taken from 10 = 10 - 8b

3. Product of 8 and b = 8b, 10 added to product = 10 + 8b

4. Difference of 10 and b = (10 - b), 8 times difference = 8(10 - b)

5. Product of 8 and b = 8b, 10 less = 8b - 10

Answer:

y = (x² + 1) / (1 – x²)

Step-by-step explanation:

x = √[(y – 1)/(y + 1)]

We can make y the subject of the expression as shown below:

x = √[(y – 1)/(y + 1)]

Take the square of both side

x² = (y – 1) /(y + 1)

Cross multiply

x²(y + 1) = (y – 1)

Clear bracket

x²y + x² = y – 1

Rearrange

x² + 1 = y – x²y

Factorise

x² + 1 = y(1 – x²)

Divide both side by (1 – x²)

y = (x² + 1) / (1 – x²)

Answer:

552.5 dollars.

Step-by-step explanation:

Answer:

156000

Step-by-step explanation:

We have 3 letters and the repetition is not allowed and we have 26 letters

26*25*24=15600

And 1 digit that has 10 option

15600*10=156000

Answer:

no, it wont

Step-by-step explanation:

2g.h = v²

2(33)(40) = v²

2640=v²

v=√2640 = 51.38 ft/s

36 < 51.38

so, the rope will not get to the window

Answer:

Lesley purchased 1 oval bead and 4 round beands.

Step-by-step explanation:

Given that Lesley purchased 5 beads at a total cost of 80 cents, and the round beads cost 15 cents each, and the oval beads cost 20 each, to determine what are the numbers of round and oval beads Kelsey purchased, the following calculation must be performed :

5 x 0.20 + 0 x 0.15 = 1

4 x 0.20 + 1 x 0.15 = 0.95

2 x 0.20 + 3 x 0.15 = 0.85

1 x 0.20 + 4 x 0.15 = 0.80

Therefore, Lesley purchased 1 oval bead and 4 round beands.

Answer:

B

Step-by-step explanation:

Symmetric means one side looks the same as another side such as a square. It isn't symmetric because the other side doesn't have the same side as the other so it isn't bell shaped and isn't symmetric

[tex]\huge{\textbf{\textsf{{\color{navy}{An}}{\purple{sw}}{\pink{er}} {\color{pink}{:}}}}}[/tex]

Answer:

The mean of the sample was of 7 and the margin of error was of 0.7.

Step-by-step explanation:

Confidence interval concepts:

A confidence interval has two bounds, a lower bound and an upper bound.

A confidence interval is symmetric, which means that the point estimate used is the mid point between these two bounds, that is, the mean of the two bounds.

The margin of error is the subtraction between the bounds divided by 2.

In this question:

Lower bound: 6.3

Upper bound: 7.7

Mean of the sample is the point estimate, so: (6.3+7.7)/2 = 7

Margin of error: (7.7-6.3)/2 = 0.7

The mean of the sample was of 7 and the margin of error was of 0.7.

A. 13

Step-by-step explanation:

What we are given....

∠A = 26° + x

∠B = 38° + x

∠A and ∠B are complementary

If complementary angles add up to equal 90° and ∠A and ∠B are complementary to each other

Then 26 + x + 38 + x = 90

                      ^ ( Note that we just created an equation that we can use to                              solve for x )

Now its just basic algebra

26 + x + 38 + x = 90

step 1 combine like terms

26 + 38 = 64

x + x = 2x

we now have 64 + 2x = 90

step 2 subtract 64 from each side

64 - 64 cancels out

90 - 64 = 26

we now have 26 = 2x

step 3 divide each side by 2

26 / 2 = 13

2x / 2 = x

we're left with x = 13

Answer:

Center

Step-by-step explanation:

A numerical data can be defined as a data set that is expressed in numbers only or a data set consisting of numbers rather than words. A numerical data is also known as a quantitative data.

Basically, numerical data are classified into two (2) main categories and these are;

1. Discrete data: a discrete data is a data set in which the number of possible values are either finite or countable. For instance, the value of a fair die, number of sweets in a jar, number of eggs in a crate etc.

2. Continuous data: a continuous data is a data set having infinitely many possible values and those values cannot be counted, meaning they are uncountable. Any quantity such as height, volume, weight, density, length, pressure, temperature, speed, distance, time are generally a continuous data.

A measure of center for a numerical data set summerizes all of its values with a single number.

On the other hand, a measure of variation gives a description of how the values of a numerical data varies with a single number.

Answer:

y=1/2+3

Step-by-step explanation:

For the first one, 0 and 3. 0/2 is not possible so we just add 3.

Second, 1/2 is 0.5 of 1/2. Plus 3 is 3 1/2.

Third, 2/2 = 1 + 3 = 4.

And last, 3/2 = 1.5 or 1 1/2. 1 1/2 + 3 is 4 1/2

--

Hope this helps!

Answer:

d

Step-by-step explanation:

Answer:

x = 7

x = 3

Step-by-step explanation:

(x - 5)² - 4 = 0

Take the (x - 5)² and foil it. By doing that, you're going to set them both against each other to multiply. The squared part means that (x - 5) is being multiplied by itself. Like so:

(x - 5) (x - 5)

Multiply the x by the x, the x by the -5, the -5 by x, and the -5 by -5.

The x times x would be x². The x times -5 would be -5x. The -5 times x would be -5x. And the -5 and -5 would be 25.

To put it in an equation: x² - 5x - 5x + 25 - 4

Simply the equation: x² - 10x + 21

Now that it's a quadratic equation, we can factor. Looking at the final term, the 21, we can find factors of 21 that add up to -10, which would be -7 and -3. They both multiply to a positive 21 and add up to a -10.

Taking this new information, we can split the equation up like so: (x -7), (x - 3)

Set both equations equal to 0.

So: x - 7 = 0

Add seven to both sides.

x = 7

x - 3 = 0

Add three to both sides

x = 3

Final Answer: x = 3, x = 7, both are real solutions