Evaluate the expression is a=2 and b=-1.
20-3b

Answers

Answer 1

Answer:

23

Step-by-step explanation:

20 - 3(-1)

20 - (-3)

20 + 3 =

23


Related Questions

y varies directly as x if y is 2 when x is 8 then the constant of variation is 1/4
a.true
b.false

Answers

Answer:

a. True.

Step-by-step explanation:

y = kx

y = 2 when x = 8 gives:

2 = 8 * k

k = 2/8 = 1/4.

For which of the funds shown would you pay the most commission on the purchase of 100 shares?
a.
Green Energy
b.
TJH Small-Cap
c.
Upton Group
d.
WHI Health

Answers

Answer:A.Green Energy (took on endgenuity)

A. Zara is learning about surface area and volume in math class. She begins to notice that she can apply this geometry in everyday life. When her mom makes a jelly sandwich for her lunch, Zara notices it is similar to a rectangular prism and decides to measure its dimensions. She measures the length as 13 cm, the width as 10.8 cm, and the height as 3 cm, as shown below. What is the volume of Zara's sandwich? Show your work.

B. What is the surface area of Zara's sandwich? Show your work.

C. Zara cuts her sandwich in half down the middle, dividing it into two equal pieces. She then stacks one half of the sandwich on top of the other, as shown below.​

Answers

hi, i don’t know the answer i just wanted to inform you that that persons link is fake. i tried it and even saw it on so many questions. sorry i couldn’t help:(

Answer plsss........ ​

Answers

1. x+12

2. x-8

3. 3*x

4. x^(2)+5

5. (x/2)+7

6. 4*(x+6)

7. (1/2)*x

8. 2x+8

9. x^(2)+3

10. (x/3)+12

Additional activity

1. 2-50

2.20/4=5

3.100-50=50

4.three times two then add to four equals ten

5. the diffrence of eight and four

PLEASE HELP WILL GIVE BRAINLIEST!!!!!!

Answers

Answer:

15 ⁵⁴ this is he answer

Step-by-step explanation:

Because

15= ⁶×⁹ = 53

Answer:

A=15^-54 is the answer to the question

the square below is being reduced by a scale factor of one-third. what is the perimeter of the new drawing

Answers

Answer:

one side = 3cm

Step-by-step explanation:

S.f=1/3

1 side=9÷3 = 3

Please help answer these, thank you

Answers

Stop sending files/links. Help them

Solve the simultaneous equations

y – x = 3
y = 7x

Answers

Answer:

x=1/2, y=3 1/2

Step-by-step explanation:

substitute y=7x into y-x=3

7x - x = 3

6x = 3

x=1/2

y=7(1/2)

y=3 1/2

DID I GET THESE TWO RIGHT? I WILL MARK YOU BRAINIEST ASAP
1) what is 32% of 50 pounds. the answer i got 16

2) what is 16% of $8?
answer i got was 1.28

Answers

Answer:

1 is 16 and 2 is 1.28

Step-by-step explanation:

you got them correct

subtract 4 4/6 - 3 2/9

Answers

Answer:

The answer is 1.4

Step-by-step explanation:

Hope this helps Uwu

once subtracted = 14/3 = 29/9

If a linear function has a slope of 3 and a y- intercept of -6 what is the equation of the graph of the function in slope - intercept form

Answers

Answer:

y=3x-6

Step-by-step explanation:

formula for alope intercept for is

y=mx+b

m is slope

b is y-intercept

Which of the following expressions is this one equivalent to?
(x4 – 2x3 – x+2) / (x3 - 1)
A. X-2
O B. x2-1
O c. x2+x+1
O D. x2 + 3x + 2

Answers

Answer:

option A

Step-by-step explanation:

(X - 2) is the answer

hope it helps

Someone help me please!! It is Timed!!! Brainiest if answered correctly!!!! No link, reported if posted!!!!

Answers

Mean
Hope it helps :3

7. In the box plot below, which quarter of the data has the greatest spread of numbers?

A. 1st
B.2nd
C.3rd
D.4th​

Answers

Either 3rd or 4th. Probably 4th but im sorry not sure

Answer:

Step-by-step explanation: number 1

Use the distributive property to expand (simplify): 5(12mu - 7v)

Answers

Answer:

60mu - 35v

Step-by-step explanation:

You disturbute 5 into the 12 and add mu and your answer and distribute 5 into the 7 and keep the v with your answer.

Hopes this works.

[tex]\textsf{Hi Brainy User, I'm Here to Help you!}[/tex]

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

[tex]\textsf{The \textbf{distributive property} states the following:}[/tex]

[tex].\qquad\bullet\sf{a(b+c)=ab+ac}[/tex]

[tex]\textsf{So we take a number or a variable \textbf{a} and distribute it by multiplying it times b and c}[/tex]

[tex]\textsf{Now we simplify.}[/tex]

[tex]\textsf{5(12mu-7v)=5*12mu-5*7v=60mu-35v}[/tex]

[tex]\Large\textsf{\textbf{Answer: 60mu-35v}}[/tex]

[tex]\Large\overbrace{\underbrace{\boldsymbol{Reflection - RoSe}}}^\star_\star[/tex]

which of the following has no solution​

Answers

i would believe the answer to be A. hope this helps

What is the name ?
I need help please

Answers

Answer:

chord

Step-by-step explanation:

Find the pattern and use it to list the next two terms in the sequence.
-53, - 45, – 37, - 29,
-53, -45, -37, - 29,

Answers

i think the answer could be -8

-21, -13. the pattern is adding 8 . example: -37+8=-29

please help !! urgent ! :(

Answers

Answer:

a = 15

Step-by-step explanation:

The formula to solve for the above diagram is given as:

Sum of the interior angles in a circle = 360°

(10a - 4)° + (6a - 2)° + (8a + 6)° = 360°

10a - 4 + 6a - 2 + 8a + 6 = 360

24a -6 + 6 = 360°

24a = 360

a = 360/24

a = 15

Please help ASAP I’ll mark you as brainlister

Answers

The correct answer is 300!

After 6 days, the mass m, in grams, of
100 grams of a certain radioactive
element is given by the function
m(t) = 100(0.97). To the nearest percent,
what is the weekly decay rate of the
element?
A 3%
C 21%
B 19%
D 81%

Answers

Answer:

3%

Step-by-step explanation:

Sorry I have no step by step explanation at this time.

Translate "Five more than a number is twenty-two"
help!!​

Answers

Let n = a number.

Five more than a number means to add.

This becomes n + 5.

The word "is" means equal in math.

Let's put it all together now.

n + 5 = 22

Done!

Answer:

Step-by-step explanation:

First, let's call "a number": n

Then, "five more than" means to add 5 to what follows or:

n+5=22

How many solutions does this equation have?

–2 + 2s = –3s + 8

Answers

Answer:

Step-by-step explanation:

-2 + 2s = - 3s + 8

-2 - 8 = - 3s - 2s

-10 = - 5s

-10/-5 = s

2 = s

Answer:

2

Step-by-step explanation:

-2+2s=-3s+8

-2+2s-(-3s)=8

-2+2s+3s=8

-2+5s=8

5s=8-(-2)

5s=8+2

5s=10

s=10/5

s=2

Help with this pleeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeease lol

Answers

Answer:

6-   D

4-   A

3-   A

Step-by-step explanation:

Answer:

6. = D

4. = A

Step-by-step explanation:

6. 2(2.5)= 5

4(2.5)= 10

6(2.5) =15

9(2.5) is not 21 its 22.5

4. 125÷5 = 25

A rectangular prism has a width of 8inches a length of 15inches and a height of 6inches what is the volume ofprism

Answers

Answer: 720 inches

Step-by-step explanation:

To find volume of a rectangular prism, we need to multiply L x W x H , so we would do-

15 x 8 x 6 and get 720in

Answer: Fre.e points :^

Step-by-step explanation: Ty *bows* u-u

Which would be the next step?

Answers

Answer:

∠ABD =∠DBC (CPCTC)

∠ABC is composed of ∠ ABD and ∠DBC . Since they are equal, BD bisects the ∠ABC

f(x) = 2x2 + 12x + 1
Determine the vertex !

Answers

Answer:

(-3, -17)

Step-by-step explanation:

The best way to find the vertex is to rewrite the given quadratic in vertex form:  y - k = a(x - h)^2.

The given quadratic is f(x) = 2x2 + 12x + 1.  We will focus on the first two terms and "complete the square."  f(x) = 2x2 + 12x + 1 can be rewritten as

f(x) = 2(x^2 + 6x) + 1, which, after completing the square, is

f(x) = 2(x^2 + 6x + 9 - 9) + 1, or

f(x) = 2( (x + 3)^2  - 9 ) + 1, or

f(x) = 2(x + 3)^2 - 17

Comparing this to

f(x) = a(x - h)^2 + k, we see that the vertex is located at (h, k):  (-3, -17)

PLEASE HELP. NO LINKS. NEED REAL EXPLANATION.

Answers

Answer:

Step-by-step explanation:

This is very easy watch

x^2-16x+ __

what do we do to find the blank?

We divide 16 by 2 to get 8

then we take the square of 8

which is 64

so this would be  x^2-16x+ 64 = 64

REMEMBER 64 goes to BOTH sides of equation

4) TRUE OR FALSE: Logarithms and Exponentials are inverses of each other 1 point
if their bases are the same!*
True
False

Answers

Answer:

True

Step-by-step explanation:

Logarithmic functions are the inverses of exponential functions. The inverse of the exponential function y = ax is x = ay.

A circular fountain has a drain in the center. The distance from the drain to the edge of the fountain is 3 feet. What is the circumference of the fountain? Round your answer to the nearest tenth of a foot.

Answers

Answer:

18.8 feet

Step-by-step explanation:

Since the drain is in the center, the distance between the drain and the edge is the radius of the circular fountain.

Use the circumference formula: C = 2[tex]\pi[/tex]r, and plug in 3 as r (the radius).

C = 2[tex]\pi[/tex]r

C = 2[tex]\pi[/tex](3)

Solve for C:

C = 6[tex]\pi[/tex]

C = 18.8

So, the circumference of the fountain is approximately 18.8 feet

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