What is the solution of the equation z +8 = 21?

Answers

Answer 1

Answer: 13

Explanation:

21-8=13

Answer 2

z = 13  is the solution of the equation z +8 = 21.

What is simplification?

When a mathematical expression is converted into an equivalent, typically shorter statement, it becomes simpler. Procedure simplification is one method to encourage uniformity in work effort, expense, and duration. It reduces diversity and variation that is detrimental, pointless, or unnecessary.

Given, an expression  z + 8 = 21

Simplifying it,

z = 21 - 8

z = 13

Therefore, The answer to the equation z + 8 = 21 is z = 13.

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Related Questions

The length of a rectangle is 4 inches longer than its width. The area of the rectangle is 32 inches square. What is the width ? The width is ___ inches

Answers

Answer:

I hope this helps dear

Step-by-step explanation:

P = 2(L + W) = 32 in

L = W + 4

2[(W + 4) + W] = 32 in ⇒

W = 6 in

L = W + 4 = (6 + 4) in = 10 in

A = LW = (10)(6) in2 = 60 in2

Consider the functions f(x) = x2 - 4x and
g(x) = (x - 2)2 + 3.
Which of the following statements are true? Select all that apply.

A)The graphs of f(x) and g(x) share the same axis of symmetry.

B)The graphs of f (x) and g(x) share the same y-intercept.

C)The graphs of f(x) and g(x) share the same
x-intercepts.

D)The graph of f(x) and g(x) open in the same direction.
The graph of f(x) is wider than the graph of g(x).

E)The vertical distance between the vertex of f(x) and the vertex of g(x) is 4 units.

Answers

Answer:

A, D

Step-by-step explanation:

graphed each function and looked at graphs to determine which statements were true

I Need all the help please?

Answers

The answer is A because x-c is factor of p(x) mean
x-c=0
X =c
Then p(c)=0

For BRAINLIST!!

Which statement is best supported by the information in the dot
plots?

Answers

Answer: D

Step-by-step explanation: because the The plot has 20 dots and it cannot be greater than or less then

what is the circumference of a circle with a radius of 5 inches?

Answers

Answer:

31.42 in.

Step-by-step explanation:

the formula for circumference of a circle is 2 x pi x r(radius).

by inserting the number 5 into the formula, we get approximately 31.42 inches.

Answer:

about 31.42 inches

Step-by-step explanation:

2 pi r = 2 × pi × 3 = 31.41593 inches

i think i did the math right

Find the x-intercept and y-intercept for the following equation:

3x−6y=12

Answers

Answer:

(4,0) and (0,-2)

Step-by-step explanation:

To find the intercepts, substitute a zero for the opposite letter so

to find y-int x = 0 so 3(0) - 6y = 12   so -6y = 12, so y = -2

to find x-int y = 0 so 3x - 6(0) = 12   so 3x = 12, so x = 4

Answer 6. Answer ASAP pls pls answer ASAP ASAP pls pls ASAP pls pls ASAP

Answers

2
5x10=50
5x2=10; 10x2=20
10x20=200

Answer:

2

Step-by-step explanation:

5x10=50

5x2=10; 10x2=20

10x20=200

Fill in the blank to complete the identity.
sin x =_____(COS X)

A) sec x

B) cot x

C) tan x

D) csc x

Answers

Answer:

answer will be option c tan x

pls Mark as brainliest

The business college computing center wants to determine the proportion of business students who have laptop computers. If the proportion differs from 25%, then the lab will modify a proposed enlargement of its facilities. Suppose a hypothesis test is conducted and the test statistic is 2.4. Find the p-value for a two-tailed test of hypothesis.

Answers

Answer:

The p-value for a two-tailed test of hypothesis is 0.0164.

Step-by-step explanation:

The test statistic is 2.4. Find the p-value for a two-tailed test of hypothesis.

This means that we look at the z-table, and we have to find:

[tex]P(|Z| > 2.4)[/tex]

Which is the pvalue of Z = -2.4 multiplied by 2, or 2 multiplied by 1 subtracted by the pvalue of Z = 2.4.

Looking at the z-table, z = 2.4 has a pvalue of 0.9918

1 - 0.9918 = 0.0082

2*0.0082 = 0.0164

The p-value for a two-tailed test of hypothesis is 0.0164.

PLZ HELP ASAP 50 PTS (MATH) + Brainliest

1) Factor the trinomial. Show ALL work:
x2 − 5x + 6

2) Factor the polynomial using grouping. Show ALL work:
5x3-2x2+25x-10


3( Determine the missing term from the perfect square trinomial. Show ALL work.
x2 − ______+ 36
Write in factored form: ( )2

4( Choose ONE of the following polynomial and factor completely, showing ALL work.
16x2 − 81
15x2 − 35
3x2 + 21x + 36

Answers

Answer:

x+3 and x+2( 5 x + 2 ) ( x 2 + 5 )9x^2+163x2 + 21x + 36

Step-by-step explanation:

x2 + 5x + 6

Let us try factorizing this polynomial using splitting the middle term method.

Factoring polynomials by splitting the middle term:

We need to find two numbers ‘a’ and ‘b’ such that a + b =5 and ab = 6.

On solving this we obtain, a = 3 and b = 2

Thus, the above expression can be written as:

x2 + 5x + 6

= x2 + 3x + 2x + 6

= x(x + 3) + 2(x + 3)

= (x + 3)(x + 2)

Thus, x+3 and x+2 are the factors of the polynomial x2 + 5x + 6.

For Step 1, you just want to find all combinations of two numbers that multiply together to be 56. Make sure you take negatives into account. Those pairs of numbers are:

 

(p, q, p+q)

(1, 56, 57)

(-1, -56, -57)

(2, 28, 30)

(-2, -28, -30)

(4, 14, 18)

(-4, -14, -18)

(7, 8, 15)

(-7, -8, -15)

 

Use those pairs of numbers and their sums to fill in the three columns of your table.

STEP 2   Look down your p+q column to find the pair of numbers that add up to equal to -15. That's (p, q) = (-7, -8).   STEP 3   Using the information from steps 1 and 2, you can factor the trinomial like this:   x2 - 15x + 56 = (x + p)(x + q) = (x - 7)(x - 8)   FOIL that back out if you'd like, to make sure the expressions are equivalent.  STEP 4   Hopefully, seeing steps 1 through 3 worked out will help you with step 4. Find all the pairs of numbers that multiply together to be 36 (1 and 36, 2 and 18, 3 and 12, 4 and 9, 6 and 6, and all their negative equivalents), then figure out which pair has a sum of 12. That means you've found your p and q, and can factor the trinomial as (x + p)(x + q).

Answer:

1) Factor the trinomial. Show ALL work:

(x-2)(x-3) steps see explanation

2) Factor the polynomial using grouping.

Group and factor out the greatest common factor (GCF), then combine.

[tex](5x-2) (x^{2} +5)[/tex]

4) Choose ONE of the following polynomial and factor completely.

15x2 − 35 = [tex]5 (3x^2-7)[/tex]

Step-by-step explanation:

x2−5x+6

The middle number is -5 and the last number is 6.

Factoring means we want something like

(x+_)(x+_)

We need two numbers that

Add together to get -5

Multiply together to get 6

Try -2 and -3:

-2+-3 = -5

-2*-3 = 6

Fill in the blanks in

(x+_)(x+_)

with -2 and -3 to get...

(x-2)(x-3)

4( Choose ONE of the following polynomial and factor completely,

15x^2-35

35 as 5*7

15 as 5*3

= 5*3x^2-5*7

Which rational number equals 0 point 3 with bar over 3? Question 2 options: 1) 1 over 5 2) 1 over 3 3) 3 over 10 4) 3 over 5

Answers

9514 1404 393

Answer:

 2) 1/3

Step-by-step explanation:

The repeating decimal can be converted to a fraction by multiplying it by 10^n and subtracting the original value. n = number of repeating digits. This process cancels all of the repeating digits, so you can find the equivalent fraction.

  [tex]x=0.\overline{3}\\\\10x -x=3.\overline{3}-0.\overline{3}=3\\\\x=\dfrac{3}{9}\\\\0.\overline{3}=\dfrac{1}{3}[/tex]

_____

Your calculator can help you answer this:

  1/5 = 0.2

  1/3 = 0.333.... (repeating) . . . . the number you're looking for

  3/10 = 0.3

  3/5 = 0.6

How many lines of symmetry does this figure have?

Answers

Answer:

4 i think

Step-by-step explanation:

If you fold this figure some times it should get it evenly

Hellpppppppppppppppppppppppppppppppppppppppp

Answers

Answer:

._.     -_-     -.-    .-.   --__--

Step-by-step explanation:

Can you help me with this please!?

Answers

9514 1404 393

Answer:

  (a)  2021

Step-by-step explanation:

The expression can be simplified.

  [tex]\displaystyle\frac{a^4+b^4+2a^2b^2+a^3b+ab^3}{a^2+b^2}+ab=\frac{(a^2+b^2)^2+ab(a^2+b^2)}{a^2+b^2}+ab\\\\=a^2+b^2+ab+ab=(a+b)^2\\\\=(\sqrt{2021})^2=\boxed{2021}[/tex]

Find AC
A
-y + 23
B
c
бу +2
3
20
23
26

Answers

Answer:

yfvhbjnk.bdfxgvhjnmbgytfrgvnhjkm

Step-by-step explanation:

PLEASE HURRY!!!! 100 POINTS

What is the unit rate of each snack?

Answers

Answer:

34.9

Step-by-step explanation:

Yes. : )

Pls help ASAP I don’t really know hot to multiply that

Answers

Answer:

1 ft=12 inches

So mulitply 57 1/2 by 12

690

Step-by-step explanation:

Answer:

690 inches

Step-by-step explanation:

12 inch = 1 foot

1/2 ft * 12in = 6in

57 * 12 = 684

690 inches

Hope I helped :]

(-3)(a +x), if a =8, x = -10

Answers

Answer:

6

Step-by-step explanation:

a =8

x = -10

(-3)(a +x)

(-3)(8 - 10)

(-3)(-2)

6

Which is the solution to the inequality?

1/4+x<5/6

A: x<7/12

B: x>7/12

C: x<1 1/12

D: x> 1 1/12​

Answers

Answer: x<7/12

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

to isolate 'x', subtract 1/4 from 5/6

you can use a common denominator of 12

1/4 = 3/12

5/6 = 10/12

x < 10/12 - 3/12

x < 7/12

Solve the equation 10^(4x−1)=2^5. Round your answer to the nearest hundredth


HELPPP!!

Answers

You can use the website “Wolfrum Alpha” for answers, it’s great and I use it for math all the time. Also could you please get me brainliest?

PLS ANSWER QUICK, HELP AND EXPLAIN

Answers

Answer:

136 ft²

Step-by-step explanation:

floor = 7 x 6 = 42 ft²

sides = 2 x 7 x 5 = 70 ft²

ends = 1/2 x 6 x 4 x 2 = 24 ft²

42 + 70 + 24 = 136 ft²

Please Help
Due today

Answers

The solution using the method of substitution are:

1) Substitution in mathematics is the name given to the process of swapping an algebraic letter for its value.

2) PEMDAS Order of operations

3) 8

4) 91

What is substitution in mathematics?

Substitution in mathematics is the name given to the process of swapping an algebraic letter for its value. Consider the expression 5x + 2. This can take on a range of values depending on what number actually is. If we are told x = 4, we can work out the value of the expression by swapping the for the number 4.

The substitution operation must follow the algebraic order of operations.

3) (x + 5)² - y when x = -2 and y = 1

Thus:

(-2 + 5)² - 1

= 9 - 1

= 8

4) 3x + 4y² when x = -3 and y = 5

Thus:

3(-3) + 4(5)² = -9 + 100

= 91

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Find the equation (in terms of x) of the line through the points (-2,-4) and (2,8) y=

Answers

Answer:

y = 3x + 2

Step-by-step explanation:

Two lines, A and B, are represented by the following equations:

Line A: 2x + y = 6
Line B: x + y = 4

Which statement is true about the solution to the set of equations? (4 points)

a It is (2, 2).

b There are infinitely many solutions.

c It is (4, 0).

d There is no solution.

Answers

Answer:

The answer is B! if you want to do more of these problems may I recommend using Desmos?

Answer:

It is (2, 2).

Step-by-step explanation:

Arnold's entire workout consisted of 10 minutes of warm up exercise, 25 minutes of lifting weights, and 15 minutes on the treadmill. What was the ratio of the number of minutes he lifted weights to the total number of minutes of his entire workout?

Answers

Add all the times together:

10 + 25 + 15 = 50 minutes total.

For the ratio divide the time for weights by total time:

25/50 which reduces to 1/2

The ratio is 1/2

Answer:

15:50 = 3:10

3:10 is the answer

2x+51 and 6x+3. What is the value of x

Answers

Answer:

12

Step-by-step explanation:

2x + 51 = 6x +3

48 = 4x

x = 12

help me answer this question

Answers

answer: 8x3-125y3
(3s are power of x)

PLEASE HELP ASAP!!!

What is the surface area of the prism below?

Answers

The prism below is 48

Josue owns a small business selling bagels. He knows that in the last week 80
customers paid cash, 45 customers used a debit card, and 4 customers used a credit
card.
Based on these results, express the probability that the next customer will pay with
cash as a decimal to the nearest hundredth.

Answers

Answer: 0.62

Step-by-step explanation: I got the answer

The probability that the next customer will pay with cash is 0.62

What is probability?

"It is finding out the possibilities of the occurrence of an event."

Formula to find the probability of an event:

"P(A) = n(A) / n(S)

where, n(A) is the number of favorable outcomes of an event A

n(S) is the total number of outcomes for an experiment"

For given example,

in the last week 80 customers paid cash, 45 customers used a debit card, and 4 customers used a credit card.

So, the total number of customers:

⇒ n(S) = 80 + 45 + 4

⇒ n(S) = 129

Let event A: the next customer will pay with cash

n(A) = 80

So, the probability that the next customer will pay with cash would be,

⇒ P(A) = n(A)/n(S)

⇒ P(A) = 80/129

⇒ P(A) = 0.62

Therefore, the probability that the next customer will pay with cash is 0.62

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Find the common ratio of the geometric sequence –4, 12, -36,...

Answers

Answer: -3

Step-by-step explanation:

The common ratio of the geometric sequence –4, 12, -36,... is -3.

12/(-4) =-3

-36/(12) = -3

They both multiply -3 for the next number.

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