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3 years ago

Solve this(7x+2=3x-2) Proof you are an expert and you do know

Mathematics

1 answer:

Pie3 years ago

7 0

So, 7x + 2 = 3x - 2 / -3x;

7x - 3x + 2 = 3x - 3x - 2;

4x + 2 = 0 - 2;

4x + 2 = -2; / -2

4x + 2 - 2 = - 2 - 2;

4x = -4; /÷4

x = - 1.

The solution is - 1.

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If AB=20, then AB+CD=?

Leona [35]

Answer:

20*20+CD=400+CD

Step-by-step explanation:

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3 years ago

Write this number in standard form 12 ten thousandso, 8 thousands, 14 hundreds, 7 ones

uysha [10]

129,407 because 12 ten thousands is 120,000 and 8 thousands is 8,000. 14 hundreds is 1,400 and 7 ones is 7 so 120,000+8,000+1,400+7=129,407

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2 years ago

Find the midpoint given the endpoints (4,-10) (22,-4) Please do not use space when

Elza [17]

Answer: (13,-7)

Step-by-step explanation:

By using the formula $(x_{m},y_{m}) =(\frac{x_{1}+x_{2} }{2},\frac{y_{1}+y_{2} }{2} )$

$(x_{m},y_{m})\\$ is the coordinates of the midpoint.

For finding the midpoint X variable do:

$(\frac{4+22}{2})=13$

For finding the midpoint Y variable do:

$\frac{-10+(-4)}{2} = -7$ (you can either keep the parenthesis or take them out. Either way, the answer is the same.

Considering coordinate numbers follow the format: (x,y), you'll simply just substitute the numbers found above into their respective places.

x: 13

y: -7

(13,-7).

6 0

2 years ago

Find the amount of interest owned for a $1,895 loan for 4 years at a 7.9% interest rate

scoundrel [369]

Answer:

principal (p)=$1895

time (t)=4years

rate(r)=7.9%

Step-by-step explanation:

compound interest amount=p((1+r/100)^t-1)=$1895((1+7.9/100)^4-1)=$1895×((1.355)-1)=$1895×(0.355)=$672.725
simple interest=ptr/100=$1895×4×7.9/100=$598.82

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3 years ago

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Assuming the conditions regarding the motion represented in the graph remain the same, determine the acceleration of the object

vovikov84 [41]

(a)

We can see that

this is a straight line

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we know that

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so, we will find slope of this line

We can select any two points

(0,4) and (5,7)

we can use slope formula

$m=\frac{y_2-y_1}{x_2-x_1}$

now, we can plug points

$m=\frac{7-4}{5-0}$

$m=0.6$

we know that slope of line is always constant irrespective of any value of t

so, acceleration will always be same irrespective of any value of t

so, we will get acceleration

$a(t)=0.6m/s^2$ ............Answer

(b)

we can see that acceleration is constant

and we know that

derivative of constant is always 0

so, instantaneous rate of acceleration at t=10s is 0........Answer

7 0

3 years ago

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