All categories

4 years ago

What is 6*3 then add that plus 7

Mathematics

2 answers:

Zigmanuir [339]4 years ago

7 0

6 * 3 is 18 then add 7 it will be 25

serg [7]4 years ago

4 0

25
6×3=18
18+7
hope I helped

You might be interested in

21. The equation x² + y² - 6x + 8y = 74 represents circle C. What is the radius of circle C?

marin [14]

Answer:

The radius is $3\sqrt{11}$ .

Step-by-step explanation:

The standard equation for a circle is $(x-h)^2+(y-k)^2=r^2$ .

I like to call this form center-radius form because it tells you the center (h,k) and the radius r.

So we put it in this form to determine r, the radius, which is the desired value here.

We will need to complete the square.

Thankfully there is a formula to take more thinking out of the process:

$x^2+dx+(\frac{d}{2})^2=(x+\frac{d}{2})^2$ .

Let's begin:

$x^2+y^2-6x+8y=74$

Reorganize the equation so the x's are together and the y's are together.

$x^2-6x+y^2+8y=74$

Now time to being completing the square. Keep in mind whatever you add to one side you need to add the other side to keep the equation equivalent to what it once was.

$x^2-6x+(\frac{-6}{2})^2+y^2+8y+(\frac{8}{2})^2=74+(\frac{-6}{2})^2+(\frac{8}{2})^2$

Use the other side of the formula I mentioned for completing the square:

$(x+\frac{-6}{2})^2+(y+\frac{8}{2})^2=74+(-3)^2+(4)^2$

$(x-3)^2+(y+4)^2=74+9+16$

$(x-3)^2+(y+4)^2=74+25$

$(x-3)^2+(y+4)^2=99$

So the center is (3,-4).

The radius is $\sqrt{99}$ .

You can actually simplify the radius since 99 contains a factor that is a perfect square.

$\sqrt{99}=\sqrt{9}\sqrt{11}=3\sqrt{11}$

7 0

4 years ago

Read 2 more answers

What is the slope of the line that passes through the given points (6,-1) and (-3,-1)

vaieri [72.5K]

Hello : let A(6,-1) B(-3,-1)
the slope is : (YB - YA)/(XB -XA)
(-1+1)/(-3+6) = 0
the slope is : 0 ...(answer : B.) 0 )

8 0

3 years ago

Read 2 more answers

Probability Question: A student is taking a multiple choice question. Each question has 4 choices. There are 20 question in the

Eddi Din [679]

Answer: 0.9961

Step-by-step explanation:

Given: Total choices to each question = 4

So, the probability that an answer is correct = $\dfrac{1}{4}=0.25$

Total questions = 20

i.e. n= 20

Let x be the binomial variable that represents the number of correct answers.

So, the probability that the student has at least 10 correct answers.

$B(x=10;n=20, p=0.25)=\sum\limits_{i=0}^{x}(i;n=20,p=0.25)$

$=0.9961$ [By using cumulative binomial table]

Hence, the probability that the student has at least 10 correct answers = 0.9961

3 0

3 years ago

A pizza restaurant gave a 20% discount on the supreme pizza which cost $16. what was the sale price?

Inga [223]

Answer:

you saved $3.20

Step-by-step explanation:

16 x 20/100

16 x 0.2

= 3.20

so 16-3.20= 12.80

final price is 12.80

6 0

2 years ago

See ss below please show all work

____ [38]

Answer:

x = 117km

Step-by-step explanation:

a1 = 18 km

q = 90% = 90/100 = 0.9

a2 = a1 • q = 18 • 0.9 = 81/5 = 16.2 km

a3 = a2 • q = 16.2 • 0.9 = 729/50 = 14.58 km

n = 10

x = a1 • q^n - 1/q - 1 = 18 • 0.9^10 - 1/0.9 - 1 = 117km

7 0

3 years ago

Read 2 more answers