here a subtraction problem that has been solved incorrectly 21-9=11 what answer I got b 11+9=20​

Answers

Answer 1

Answer:

I put the answer on your copy of this question. However, I can at least put the equation here.

You are correct in this case.

11 + 9 = 20 - 9 = 11

11 plus 9 equals 20, 20 minus 9 equals 11 (correct statement)


Related Questions

welp meeeee plssssss

Answers

Answer:

[tex]if \: \: \frac{p}{4} = \frac{6}{8} = \frac{3}{4} \\ so \: p \: is \: 3[/tex]

(x+y) (a+b)-(y+z) (a+b)

Answers

Answer:

(x+y)(a+b)-(y+z)(a+b)

first we solve half

(x+y)(a+b)

(xa+xb+ya+yb)

(y+z)(a+b)

(ya+yb+za+zb)

(xa+xb+ya+yb)-(ya+yb+za+zb)

xa+xb+ya+yb-ya-yb-za-zb

which needs to cut

+ya-ya+yb-yb

now left

xa+xb-za-zb

x (a+b)-z (a+b)

(x-z)(a+b)2

The developmental department for a National Lawn Care Services Provider is interested in improving products and services. The germination periods, in days, for grass seed are normally distributed with a population standard deviation of 7 days and an unknown population mean. If a random sample of 17 types of grass seed is taken and results in a sample mean of 37 days, find the error bound (EBM) of the confidence interval with a 98% confidence level.

Answers

Answer:

3.949

Step-by-step explanation:

We can use the formula to find the error bound:

EBM=(zα/2)(σn/√)

We know that σ=7 and n=17. We are also given that the confidence level (CL) is 98%, or 0.98. So, we can calculate alpha (α).

α=1−CL

=1−0.98

=0.02

Since α=0.02, we know that

α2=0.022=0.01

The value of z0.01 is 2.326. Now we can substitute the values into the formula to find the error bound.

EBM=(zα/2)(σ/√n)

=(2.326)(7/√17)

≈(2.326)(1.698)

≈3.949

So, the error bound (EBM) is 3.949.

Jack's family took a road trip to Mount Rushmore. Jack slept through the last 65% of the trip. If the total length of the trip was 700 miles, how many miles had they travelled when Jack fell asleep?

Answers

Using proportions, it is found that they had traveled 245 miles when Jack fell asleep.

What is a proportion?

A proportion is a fraction of a total amount.

Jack slept through the last 65% of the trip, hence he fell asleep when 100 - 65 = 35% of the 700 mile trip had been traveled, so:

0.35 x 700 = 245.

They had traveled 245 miles when Jack fell asleep.

More can be learned about proportions at https://brainly.com/question/24372153

Answer:245 miles

Step-by-step explanation:Using proportions, it is found that they had traveled 245 miles when Jack fell asleep.

What is a proportion?

A proportion is a fraction of a total amount.

Jack slept through the last 65% of the trip, hence he fell asleep when 100 - 65 = 35% of the 700 mile trip had been traveled, so:

0.35 x 700 = 245.

They had traveled 245 miles when Jack fell asleep.

what is bigger, 1/2 or 2/3?

Answers

1/2 because it’s half is larger.

Answer:

2/3

Step-by-step explanation:

2/3 is bigger because it takes up more than a half.

Find the area of the trapezoid​

Answers

Answer:

49 units squared

Step-by-step explanation:

The area of a trapezoid is calculated with the following formula:

(a+b)*1/2*h (a: base, b: base, h: height)

(3+11) * 1/2 * 7 = 49 the area is stated in square units so the answer is 49^2

Fifteen is 30% of what number

Answers

Answer:

15 is 30% of 50

Step-by-step explanation:

Answer:

50

Step-by-step explanation:

[tex]\frac{5}{x} =\frac{13}{100}[/tex]

5×100=500

500÷13=50

Lena used a total of 3 5/6 gallons of gas while driving her car. Each hour she was driving, she used 7/9 gallons of gas. What was the total number of hours she was driving?

Answers

Step-by-step explanation:

3 x 5/6 = 2.5 gallons of gas used

7/9 galllons per 1 hour

Hence if she used 2.5 gallons,

2.5 ÷ 7/9 =

[tex]3 \frac{3}{14} hours[/tex]

y= 16 + 5x
x= -2
Solve it algebraically

Answers

Answer:

[tex]x=-2[/tex]

[tex]y=6[/tex]

Step-by-step explanation:

substitute in -2 to replace the x

[tex]y=16+5(-2)[/tex]

[tex]y=16-10[/tex]

[tex]y=6[/tex]

pls do this for me pls I need it for my homework do it in a PowerPoint and show me it

Answers

Answer:

i might need more info unless this is the only questions

Step-by-step explanation:

I'm not sure what it means by "define the types of linear" (maybe theres a given function?), but to find the x intercept you need to make y 0. For example:

if we have a function

f(x) = 2x + 1

and we want to find the x intercept we substitute 0 to y

0 = 2x + 1

not

f(0) = ......

Answer:

To find the x-intercept of a given linear equation, plug in 0 for ‘y’ and solve for ‘x’. To find the y-intercept, plug 0 in for ‘x’ and solve for ‘y’. How do you find the Y intercept in a word problem? When a word problem involves a constant rate or speed and a beginning amount, it can be written in slope-intercept form: y=mx+b.

Step-by-step explanation:

What’s the answer? Because am having a hard time with this math problem.

Answers

9514 1404 393

Answer:

  34.5 square meters

Step-by-step explanation:

We assume you want to find the area of the shaded region. (The actual question is not visible here.)

The area of the triangle (including the rectangle) is given by the formula ...

  A = 1/2bh

The figure shows the base of the triangle is 11 m, and the height is 1+5+3 = 9 m. So, the triangle area is ...

  A = (1/2)(11 m)(9 m) = 49.5 m^2

The rectangle area is the product of its length and width:

  A = LW

The figure shows the rectangle is 5 m high and 3 m wide, so its area is ...

  A = (5 m)(3 m) = 15 m^2

The shaded area is the difference between the triangle area and the rectangle area:

  shaded area = 49.5 m^2 - 15 m^2 = 34.5 m^2

The shaded region has an area of 34.5 square meters.

In Mrs. Kelly's class, 1/5 of the students failed the math test. Of the remaining students in the class, 1/4 scored an A. What fraction of the whole class passed the test, but scored below an A?

Answers

Answer:
11/20

Explanation:
1/5 + 1/4
= 4/20 + 5/20
= 9/20

20/20 - 9/20 = 11/20

PLEASE HELP!!
Only respond if you know the answer
15 ∙ 10 ∙ 2 + 15 ∙ 7 ∙2 + 7 ∙ 10 ∙ 2 which equals 650
The surface area of the jewelry box is 650 sq2
What is the surface area of the box if it is scaled up by a factor of 10?

Answers

Answer:

the answer is 6500

Step-by-step explanation:

hope this helps

What is the equation of the line that contains the point (-1 , 4) and has a slope of 3?​

Answers

Step-by-step explanation:

Let's write the equation with formula:- Where, x1 is -1 and y1 is 4 and m is 3Thus, The correct choice is option C.

Step-by-step explanation:

Equation of line formula=> y=mx+c

Let take point (-1,4) as (x, y) and slope m=3

4= 3(-1) +c

4= -3+c

4+3=c

7=c

Therefore by using equation of line formula we get

y= mx+c [m=3 , c=7]

y=3x+7

Allen purchased a computer on sale.
The original price was $1,400. The sale price was 3/5 of the original price. How much
did Allen pay for computer?

Answers

$560
Explanation: 3 divided by 5 = 0.6
0.6 x 1,400 = 840
1,400 - 840 = 560

Find the value of m<3 - m<1

Answers

Answer:

if this is the image then the answer would be B.

Step-by-step explanation:

Krysta is finding the volume of a cylinder and the volume of a sphere. Both the cylinder and the sphere have a radius of 4 inches. The cylinder has a height of 8 inches. What is the volume of the cylinder?

Answers

Answer: 402.12 cubic inches

Step-by-step explanation:

Formula for volume of a cylinder: area of base x height

Area of base: pi x radius squared

So, pi x 4 squared

= 50.27

50.27 x 8 = 402.12

Need help with my Math homework

Answers

Answer:

Step-by-step explanation:

If the angle is 111.6 what is x

Answers

Answer:

the angle would be 111.6 because they are vertical meaning that they are exact opposite of the other but have the same angle measurement.

Step-by-step explanation:

The basketball team scored 85 points in the last 2 games.How many points can they expect to score after 5games?

Answers

Answer:

297.5

Step-by-step explanation:

85/2=42.5 per game

42.5×5=212.5

85+212.5=297.5

X - 10 - 68 - 17 =(when x = 0)

Answers

Answer:

-95

Step-by-step explanation:

0 - 10 - 68 - 17

-10 - 68 - 17

=-95

Answer:

-95

Step-by-step explanation:

What is 5 * 5 yeehaw new chaatatattatat

Answers

Answer:

25 yeehawwwww

Step-by-step explanation:

PLEASE HELP!
find the area!
its pretty easy

Answers

Answer:

39 right? or that's perimeter ??

Step-by-step explanation:

Answer:

191.25 mm

Step-by-step explanation:

area of triangle is 1/2 b*h

1/2 (7.5*15) = 56.25

area of rectangle is b*h

15*9 = 135

56.25+135 = 191.25

Can some help me please

Answers

Answer: 2/10

Step-by-step explanation:

Multiply each X value by the probability it happens. This gives 0(10/10)+1(2/10)=2/10

Without graphing, tell whether the slope of a line that models the linear relationship is positive, negative, zero, or undefined. Then find the slope. The total cost, including shipping, for ordering five uniforms is $63. The total cost, including shipping, for ordering seven uniforms is $83. ​

Answers

Answer:

A--> W, Z, U, Y

Step-by-step explanation:

I took the test on Edge

A system of equations has no solution. If y = 8x + 7 is one of the equations, which could be the other equation?
O 2y = 16x +14
O y = 8x - 7
O y = -8x + 7
O 2y = -16x - 14

Answers

Answer: y=8x-7 just took the quiz hope that helps

The other equation could be y = 8x - 7

What is equation?

An equation is a  mathematical statement that is made up of two expressions connected by an equal sign.  In its simplest form in algebra, the definition of an equation is a mathematical statement that shows that two mathematical expressions are equal. For instance, 3x + 5 = 14 is an equation, in which 3x + 5 and 14 are two expressions separated by an 'equal' sign.

here, we have,

to determine the other equation:

The first equation is given as:

y = 8x + 7

For the system of equation to have no solution, then the equations in the system would have different constant values.

Take for instance:

y = 8x + b

Where:

b is a constant not equal to 7

From the options, we have:

y = 8x - 7

Notice that -7 and 7 are not the same

Hence, the other equation could be y = 8x - 7

Read more about system of equations at:

brainly.com/question/13729904

#SPJ7

Please help with angle x

Answers

Answer:

x = 155

Step-by-step explanation:

What is the value of x that makes the given equation true? -90 = -100 + x

A. -10
B. 10
C. -190
D. 190

Answers

-90 = -100+x

-90+100=X

+10 =X

OPTION B:- 10

Option B :- 10

Explanation :

[tex] - 90 = - 100 + x \\ - x = - 100 + 90 \\ - x = - 10 \\ x = 10 \\ [/tex]

ASAP WILL GIVE BRAINLIEST

For what value(s) of k will each relation not be a function? B = {(k^2-5k,10), (k+7,4)}

Answers

Answer:

7, -1

Step-by-step explanation:

Find which values of k will fit both expressions.

k^2 - 5k = k + 7

Solve equation.

k = 7, -1

Help worth 50 POINTS and BRAINLIEST

Answers

Answer:

B i think

Step-by-step explanation:

let one truck be t

10t = 120

t = 12

Answer:

120÷10

=12

Jay can clean 12 trucks

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