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3 years ago

How to solve please help thank you

Mathematics

2 answers:

zysi [14]3 years ago

8 0

$168 - $13 = $155
$155 + $50 = $205
$205 is the new balance

Rashid [163]3 years ago

7 0

her new balance is $105.

hope this helps.

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1,8 О, ОР 81, 817 0,00 3 16 3 3 5 0 3

Tema [17]

Answer:

G o o g l e >:>

Step-by-step explanation:

8 0

3 years ago

What is the gcf of 5 (4x-3) +x (4x-3)? Explain

TiliK225 [7]

I more or less have an understanding, but,

Factor out the GCF of 4x-3 from 5(4x-3)+x(4x-3)

Making it,

(4x-3)(5+x)

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3 years ago

Which expression could be substituted for y in the second equation to find the value of x?

EastWind [94]

value of x is $x=-\frac{29}{4}$ and value of y is $y=-\frac{9}{2}$

Step-by-step explanation:

We need to find Which expression could be substituted for y in the second equation to find the value of x

The given equations are:

$2x-y=-10\,\,\,(1)2x - 3y= -1\,\,\,\,(2)$

For putting value of y in second equation, we will find from equation 1

From equation 1:

$2x-y=-10\\-y=-10-2x\\y=10+2x$

Putting value of y i.e y=10+2x in equation (2) to find value of x

$2x-3y=-1\\2x-3(10+2x)=-1\\2x-30-6x=-1\\-4x=-1+30\\-4x=29\\x=\frac{29}{-4}\\x=-\frac{29}{4}$

So, now finding value of y by putting value of x= -29/4 in eq(1)

$2x-y=-10\\2(-\frac{29}{4})-y=-10\\-\frac{29}{2}-y=-10\\-y=-10+\frac{29}{2}\\ -y=\frac{-20+29}{2}\\ -y=\frac{9}{2}\\ y=-\frac{9}{2}$

So, value of x is $x=-\frac{29}{4}$ and value of y is $y=-\frac{9}{2}$

Keywords: System of equations

Learn more about System of equations at:

#learnwithBrainly

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4 years ago

5. Mark's brother is five years older than Mark.

AleksAgata [21]

Answer:

Step-by-step explanation:

Let's say Mark is M and his brother is B.

M+5=B

M+B=23

Now we can solve using subsitution.

M+M+5=23

(Subtract 5 from both sides)

2M=18

M=9

Hope this helped!

8 0

3 years ago

Find the missing side or angle round to the nearest tenth b=15 a=30 c=29 A=[?]°

pogonyaev

Answer:

71.6056

Step-by-step explanation:

c² = a² + b² - 2abcosC°

29² = 30² + 15² - 2(30)(15)cosC°

841 = 900 + 225 - 900cosC°

-59 = 225 - 900cosC°

-284 = -900cosC°

71/225 = cosC°

cos⁻¹(71/225) = C°

C° = 71.6056

6 0

3 years ago