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2 years ago

7x/5+5/2=x/10+1/5 SHOW WORK!!! PLEASE HELP!!!! WILL MARK BRAINLIEST

Mathematics

1 answer:

Anettt [7]2 years ago

3 0

Answer:

- 23/13

Step-by-step explanation:

1. Subtract 5/2 from both sides of the equation.

2. Simplify

7/5 = /10 − 23/10

3. Multiply all terms by the same value to eliminate fraction denominators.

7/5 = /10 − 23/10 2 ⋅ 5 ⋅ 7/5 = 2 ⋅ 5( /10 − 23/10)

4. Simplify

14 = − 23

5. Subtract from both sides of the equation.

14 = − 23 14 − = − 23 −

6. Simplify

13 = − 23

7. Divide both sides of the equation by the same term.

13<em>x </em>= −23 13x/13 = -23/13

8. Simplify

= −23/13

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What is an expressions that are equivalent to 7(3c).

ra1l [238]

Well, there are lots, but if you get rid of the parenthesis...

you would get 21c and that equals to 7(3c).

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3 years ago

In two or three sentences explain how you would solve for the real solutions of the following equation: please help asap!!

g100num [7]

the real solutions for the equation $x^{3}=-64$ are -

$x=4,2+-2\sqrt{3i}$

Step-by-step explanation:

$x^{3}$ = $- 64$

$x^{3} +64$ = 0

We can write 64 as $4^{3}$

$x^{3}$ + $4^{3}$ = 0

using the identity ( $x^{3}+y^{3} = (x+y)(x^{2} -xy+y^{2} )$ )

we get,

= $(x+4) (x^{2} -x*4+4^{2} )$

= $(x+4)(x^{2} -4x+16)$ ....................(1)

solving the quadratic equation ,

$x^{2} -4x+16$ =0

solutions of this quadratic equation can be obtained by

$x=-b +- \sqrt{b^{2}-4ac } /2a$

let use y for factors

$x=-(-4x)+-\sqrt{(-4x^{2} )-4*x^{2} *16} / 2*x^{2}$

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$x=4+-\sqrt{16-64}/2$

$x=4+-4\sqrt{3i} /2$

<u /> $x=2+-2\sqrt{3i}$ ..................(2)

from the equation 1 we have,

$x-4=0$

which gives solution $x=4$

and from equation 2 we got $x=2+-2\sqrt{3i}$

so the real solutions for the equation $x^{3}=-64$ are -

$x=4,2+-2\sqrt{3i}$

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2 years ago

Can someone help me please

Blizzard [7]

Answer:

Area=76.56 square feet

Step-by-step explanation:

area of a rectangle =base*height = 5ft*8ft= 40 square feet

area of a triangle=(base*height)/2 =(4ft*4ft)/2= 8 square feet

area of a square=base*height =4ft*4ft= 16 square feet

area of a circle = $\pi$ * r^{2}[/tex]=3.14* $2^{2}$ = 12.56 square feet

r = radius

Total area=(40+8+16+12.56)square feet

Total area=76.56square feet

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3 years ago

What is the answer for <br> 4[8-(8)]+1

ivann1987 [24]

Answer:1

Step-by-step explanation:

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3 years ago

Can someone do this for me or help me

Elden [556K]

JM=12
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VT= 11
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ST=?

GF=23
HF=20
GH=?
GE=?

M<1=?
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M<3=?
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M<5=?
M<6=?
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These are the only answers I knew, I’m sorry I couldn’t find the rest. If I do find more answers, I’ll comment them.

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3 years ago