what is 4 minus 7 plus 9 =8

Answers

Answer 1

Answer: 15

Step-by-step explanation:

 4-7+9=8

  +7     +7

  4+9=15

    15=15

Answer 2

Answer:

Step-by-step explanation:


Related Questions

Dan and David are marking exam papers. Each set takes Dan 35 minutes and David 1 hour. Express the time's Dan and David take as a ratio.
Give your answer in its simplest form.

Answers

Answer:

7 : 12

Step-by-step explanation:

35 : 60 cuz 60 mins is an  hour

7 : 12

Can someone please help me?? I have a huge test coming up and I need to review for it. Do you know the answer? If you do, please explain it because i want to be sure the day of the test. Thanks!! 25 Points!!

Answers

Answer:

Easy way is completing a square:

x² + 20x - 39 = 10x² + 2*x*10 + 100 = 49 + 100(x + 10)² = 149x + 10 = ± √149x = - 10 ± √149

Correct choice is J

Use the GCF to factor: 24x + 12y

Answers

it slows would be y+2x=

Answer:

36xy

Step-by-step explanation:

Find the area of a garden whose circumference is 36 yards.

Answers

?????????????????????????????

hi please help i’ll give brainliest thanks

Answers

Answer:

point A

Step-by-step explanation:

Hope this helps you dude.

HELP ASAP!!!! 10 points!!

Answers

Answer:

a, b, c are all perfect square trinomials

Step-by-step explanation:

a)  (x+3)²

b) (w²-2)²

c) (xy-1)²

Please help ASAP (NO LINKS)
An import business owner paid $6000 for the goods sold in one month. Her additional expenses are $1600 per month. If she marks up her merchandise 70%, what was her profit for the month?

Answers

Answer:

the answer is $2,600 I belive so

What is the Slope in the equation y= -2x +5

Answers

Answer:

-2

Step-by-step explanation:

y=-2x+5

y=mx+b where m=slope and b=y-intercept

The answer is -2 hope this helps

please solve Y Im in desperate need of help..​

Answers

Answer:

Y = 10

Explanation:

We know that the left and top angles are 45°, the base is 10, and the bottom right angle is 90°, or a right angle. The simplest way I can explain this is the bottom side of the triangle is the same as the right side of the triangle. Meaning "y" would be 10 like the bottom.

If I'm right, I'd appreciate a brainliest as it'd really help me out :D

Please answer question!

Answers

Answer:

23ft

Step-by-step explanation:

I had $13 My mom gave me $10 my dad gave me $30 My aunt my uncle and my grandma gave me $100 I had another seven dollars how much did I have

Solve for x if: y = -6 and -10x + 7y = 18

A) 8
B)-18
C)-6
D)9

Answers

Answer:

Step-by-step explanation:

-10x+7(-6)=18

-10x-42=18

      +42 +42

___________

-10x/-10=60/-10

x= -6

write the rate and unit rate. 609 kilometers in 7 hours ???​

Answers

Answer:

The rate is 609 kilometers per 7 hours.

The unit rate is 609/7 = 87 kilometers per hour.

Step-by-step explanation:

Should be right

Answer:

87 Kilometers per hour    and if by unit rate you mean how many miles they are doing a miniute then it is 1.45 kilometers per hour

Step-by-step explanation:

free brainlest To first person pls
4 x (9 - 2)

Answers

That answer will be 28

Answer:

=28x

Step-by-step explanation:

Solve within parenthesis first;

Subtract 9-2=7

=4*7x

Multiply the numbers;

4*7=28

=28x

Each figure below is a regular polygon and has a radii and apothem shown. Find the measure of each numbered angle

Answers

What he said is ok!!!

Look at this graph :
Is this relation a function?

Answers

Step-by-step explanation:

Yes it is a function dearest

What is the volume of this cone?

Answers

Answer:

[tex]V=209\ cm^3[/tex]

Step-by-step explanation:

The height of this cone, h = 8 cm

The radius of this cone, r = 5 cm

We need to find the volume of this cone. The formula for the volume of a cone is given by :

[tex]V=\dfrac{1}{3}\pi r^2 h[/tex]

Put all the values,

[tex]V=\dfrac{1}{3}\times 3.14\times 5^2 \times 8\\\\=209.33\approx 209\ cm^3[/tex]

So, the volume of this cone is equal to [tex]209\ cm^3[/tex].

what is the coefficient of 49n+986=-43

Answers

Answer: 49

Step-by-step explanation: A coefficient is the number placed in front of the variable, meaning n is the unknown number, aka variable. Making 49 the coefficient to that variable.

Hope this helps ^^

Answer:

49

Step-by-step explanation:

A coefficient is the numerical or constant quantity placed before or multiplied by a variable.

find the sum of the polynomial : (3 x2- 8x + 2) + (3 x3 + 7x + 6) =

Answers

Answer:

3x² + 3x³ - x + 8

Step-by-step explanation:

All we have to do is add the terms together

(open parentheses as well)

3x² - 8x + 2 + 3x³ +7x +6

now, simplify

3x²+3x³-x+8

I need help hurry please

Answers

Answer:8.8ft

Step-by-step explanation:

250/3.14*3^2

250/3.14*9

250/28.26

8.8464

8.8ft

f(n)=x2+1
g(n)=2x-5
Find f(n)-g(n)

Answers

Answer:

x^2 - 2x + 6

Explanation:

(x^2 + 1) - (2x - 5)
x^2 + 1 - 2x + 5
x^2 - 2x + 6

Naomi used a rectangle, a square, and a right triangle to form the following figure. What is the area of the shaded region of the figure in square centimeters?

Answers

Answer:

102cm²

Step-by-step explanation:

Step 1 find the area of the whole rectangle

Area of a rectangle = width times length

The width of the rectangle is 20 cm and the length is 6cm

So the area = 20 * 6

20 * 6 = 120

Hence the area of the rectangle is 120 square centimeters.

Step 2 Find the area of the square and the triangle

Area of square = s²

where s = side length

The square has a side length of 3 so the area of the square = 3²

3² = 9

Hence, the area of the square is 9cm²

Now to find the area of the triangle

area of a triangle = [tex]\frac{bh}{2}[/tex] where b = base length and h = height

We are given the height (3 cm, this is given because the square is sharing it's side length with the height of the triangle.)

Now to find the base length

We can find it by subtracting the overall rectangle's width (20cm) by the bottom width (11 cm) and the bottom length of the square ( 3 cm )

so triangle's base length = 20 - 11 - 3

20 - 11 - 3 = 6

so the base length of the triangle is 6 cm

now we plug in the values of the height and the base length into the formula

[tex]A=\frac{6*3}{2} \\6*3=18\\\frac{18}{2} =9[/tex]

Hence the area of the triangle is 9 cm²

Finally, to find the area of the shaded area, we subtract the area of the triangle and the area of the square from the area of the rectangle

so your answer = 120 - 9 - 9

120 - 9 - 9 = 102

Hence, the area of the shaded region is 102 square centimeters.

ercise 5d
lve the following
lutions.
13 - 6a = 1


Answers

Answer:

the answer is 17a

Step-by-step explanation:

I took the quiz


Ahmed and his family has dinner at a restaurant and the cost of their meal is BD 28.
Because of the service, he wants to leave a 20% tip. What is his total bill including tip?
ents
Select the correct response:
се'
BD 24.600
ts
BD 33.600
BD 40.500
BD 40

Answers

Answer:

Total bill will be BD 33.600

Step-by-step explanation:

28 multiplied by 20% = 5.6

Add 5.60 to the cost

28.00 + 5.60 = 33.600

hope this helps and is right. p.s. i really need brainliest :)

The answers to any of these would be really helpful

Answers

Answer:

Step-by-step explanation:

Q9) Surface Area of a cylinder

= 2πr(r + h)

Diameter = 12cm , Radius = Diameter/2 = 12 cm/2

r = radius = 6cm

h = height = 10 cm

Surface area = 2 × π × 6(6 + 10)

= 603.18579 cm²

Approximately = 603.2 cm²

Q11) Volume of a rectangular prism

Length × Width × Height

Length = 6.5cm

Width = 8.5 cm

Height = 4 cm

Volume = 6.5 cm × 8.5 cm × 4 cm

Volume = 221 cm³

Q12) Volume of the cylinder = πr²h

r = radius = 1.7m

h = height = 9 m

Volume = π × 1.7 × 9

= 81.71 m³

Approximately = 81.7 m³

Q13) Volume of the cylinder = πr²h

Diameter = 0.8m, Radius = Diameter/2 = 0.8m/2

r = radius = 0.4m

h = height = 1.5 m

Volume = π × 0.4 × 1.5

= 0.75 m²

Approximately = 0.8 m³

marking brainliest! please help

Answers

Answer:

H.

Step-by-step explanation:

F is incorrect because you don't know how many service calls a person will make. G is incorrect for the same reason, but with texts. J is incorrect because 8 skirts per hour is making the graph unproportioned.

Answer:

H

Step-by-step explanation:

A bakery makes 6 loaves of bread every 1/2 hour or 12 loaves every hour.

A bag contains 4 blue marbles, 3 white marbles, and 2 pink marbles. What is the probability of NOT drawing a white marble?

Answers

Answer:

2/3

Step-by-step explanation:

Total marbles:

4 + 3 + 2 = 9

Non-white marbles:

4 + 2 = 6

Probability of not drawing a white marble:

6/9

2/3

Answer:

6/9

Step-by-step explanation:

n=numerator

d=denominator

b=blue

p=pink

w=white

m=marbles

What we know:

4 bm

2pm

3 wm

what we need to know:

we need to know the denominator (all the numbers added up) and the numerator (the marbles that aren't white marbles).

work:

n= 4+2=6

d= 4+3+2=9

so it is 6/9

Can I please have Brainliest?

Please answer correctly! I will mark you as Brainliest!

Answers

Answer:

V = 336 ft3

Step-by-step explanation:

1/2*7*16*6

336

Answer: 336 ft cubed

Step-by-step explanation:

Formula is 1/2 times B times L times H so, 7 times 6 is 42, 42 times 16 is 672 and 672 divided by 2 or multiplied by 1/2 is 336

There are 3 characters (elf, hobbit, or human) and 5 defense tools (magic, sword, shield, slingshot, or umbrella) to pick from. If you randomly choose your character and tool, what is the probability that you'll be a magic elf?

Answers

Answer:

The probability that I pick a magic elf is 6.66%.

Step-by-step explanation:

Since there are 3 characters (elf, hobbit, or human) and 5 defense tools (magic, sword, shield, slingshot, or umbrella) to pick from, if I randomly choose my character and tool, to determine what is the probability that I'll be a magic elf, the following calculation must be performed:

1/3 x 1/5 = X

0.3333 x 0.2 = X

0.0666 = X

0.0666 = 6.66%

Therefore, the probability that I pick a magic elf is 6.66%.

A credit card company advertises an APR of 17.2%, compounded daily. What is the effective interest rate

Answers

Answer:

18.76%

Step-by-step explanation:

effective interest rate = ( 1 + periodic interest rate)^m - 1

m = number of compounding = 365

Periodic interest rate = APR / number of compounding = 17.2 / 365 = 0.0471% = 0.000471

(1 + 0.000471) ^365 - 1 = 18.76%

The mean of the numbers 7, 5x, 4, 8 and 6 is
10. What is the value of x?
Ans:​

Answers

Answer:

Step-by-step explanation:

[tex]\frac{7+5x+4+8+6}{5} = 10[/tex]

7+5x+18=50

5x+25 = 50

5x = 25

x = 5

Answer:

25+5x =10

5

25+5x=505x=50-25x=25/5x=5

hope it helps.

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