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4 years ago

Use compatible numbers to estimate the quotient 784 divided by 8

Mathematics

2 answers:

Afina-wow [57]4 years ago

7 0

98,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,

algol [13]4 years ago

7 0

Answer:

Step-by-step explanation:

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Paraellogram prsim is cut by a plane perpindendicular

Akimi4 [234]

I believe the answer is a trapezoid.

Hope this helps!

-Payshence xoxo

5 0

3 years ago

Please help with math problem

e-lub [12.9K]

Answer:

$a_0 = -8$

$a_1=-6$

$x^2 +y^2 -8x - 6y = 0$

Step-by-step explanation:

The equation of the circle has the following form

$x^2 + y^2 + a_0x + a_1y=0$

The equation of the circle has the following form

We know that the circle goes through the following points

(1, 7)

(8, 6)

(7, -1).

Then we substitute the values of x and y in the equation

For (1, 7)

$(1)^2 + (7)^2 + a_0(1) + a_1(7)=0$

$1 + 49 + a_0 + 7a_1=0$

$a_0 + 7a_1=-50$ (1)

For (8, 6)

$(8)^2 + (6)^2 + a_0(8) + a_1(6)=0$

$64 + 36 + 8a_0 + 6a_1=0$

$8a_0 + 6a_1= -100$ (2)

With these equations is enough to solve the system

$a_0 + 7a_1=-50$ (1)

$8a_0 + 6a_1= -100$ (2)

Multiply the equation (1) by -8 and add it to the equation (2)

$-8a_0 - 56a_1=400$ (1)

$8a_0 + 6a_1= -100$ (2)

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

$-50a_1 = 300\\\\a_1 = -6$

Then

$a_0 + 7(-6) = -50\\\\a_0 = -50+42\\\\a_0=-8$

Finally the equation is:

$x^2 +y^2 -8x - 6y = 0$

7 0

3 years ago

−(−2−5x)+(−2)=18 Solve for X

sertanlavr [38]

The answer will be x = 18/5 = 3.600

6 0

4 years ago

Evaluate the following: −3 − (−2). (5 points) Question 1 options: 1) −5 2) −1 3) 1 4) −6

Ganezh [65]

Answer:

2) -1

Step-by-step explanation:

it is easy

we have to first open the brackets, as it is ' - ' we have to change the sign to opposite of that of the number in the bracket and then solve it.

so the number 2 is having negative sign, we make it positive. this rule is applied only when there is a negative sign and a bracket is there.

-3-(-2)

-3+2

=-1

7 0

4 years ago

How much water should be added to 12mL of 7% alcohol solution to reduce the concentration to 6%?

lana [24]

Answer:

7%*12=6%(12+x)

.84=.72+.06x

.06x=.12

x=2

how much water should be added to 12 mL of 7% alcohol to reduce concentration to 6%? 2 ML

Step-by-step explanation:

5 0

3 years ago

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