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3 years ago

Simplify where possible 3 (x+3)

1 answer:

8 0

Distributive property
3(x+3)

3*x + 3*3

3x+9

divide by three to simplify

x + 3

if you’re supposed to solve it, subtract three

x = -3

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5 = 4a - 7<br> 3 - 8c = 35<br> -1/2x -7 = -11<br> Solve this please.

Hitman42 [59]

Answer:

a=3, c=-4, x=8

Step-by-step explanation:

5=4a-7

4a-7=5

4a=5+7

=12

a=12÷4

3-8c=35

-8c=35-3

=32

c=-32÷8

=-4

-1/2x-7=-11

-1/2x=-11+7

=-4

x=4÷1/2

=4/1×2/1

3 0

3 years ago

Write at least 10 numbers that will round to 700,000. These numbers should not repeat any digits

Lady bird [3.3K]

718,956;716,480;715,230;714,398;713,486;712,396;710,469;709,612;708,421;706,329

5 0

3 years ago

Please help answer number 6 click image. Nice

madam [21]

A total of 1369 students enrolled this year

7 0

3 years ago

Find the angle between the given vectors to the nearest tenth of a degree.

saul85 [17]

Answer:

Step-by-step explanation:

Given

u = <6, -1>

u = 6i-j

and

v=<7,-4>

v=7i-4j

The formula for angle is:

Let x be the angle

$cos\ x = \frac{u.v}{||u||.||v||}$

where ||u|| is the length and u.v is the dot product or scalar product of both vectors

So,

$||u|| = \sqrt{(6)^2+(-1)^2}\\ = \sqrt{36+1}\\ = \sqrt{37}\\ ||v||=\sqrt{(7)^2+(-4)^2}\\ = \sqrt{49+16}\\ = \sqrt{65}\\$

$u.v = u_1u_2+v_1v_2\\= (6)(7)+(-1)(-4)\\=42+4\\=46$

$cos\ x=\frac{46}{\sqrt{37}\sqrt{65}} \\= \frac{46}{\sqrt{2405} }\\Can\ also\ be\ written\ as:\\= \frac{46}{\sqrt{2405} } * \frac{\sqrt{2405} }{\sqrt{2405}} \\=\frac{46\sqrt{2405} }{2405}$

The calculated angle will be in radians. To find the angle in degrees:

$x = \frac{180}{\pi} cos^{-1} (\frac{46\sqrt{2405} }{2405})\\x = 20.282\\x= 20.3\\$

Hence Option A is correct ..

6 0

4 years ago

Simplify 3^-6 × (3^4 ÷ 3^0)^2

777dan777 [17]

Answer:

Step-by-step explanation:

3^-6 × (3^4 ÷ 3^0)^2 = 3^-6 × (3^4 ÷ 1 )^2 {any number raise to zero = 1}

= 3^-6 × (3^4 )^2

= 3^-6 × (3^8) [ (a^m)^n = a^ m*n ]

= 3^ -6 + 8 = 3^2 = 3 * 3 = 9

8 0

3 years ago

Simplify where possible 3 (x+3)​

Simplify where possible 3 (x+3)