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IRISSAK [1]
2 years ago
8

What is? y=x+5 2y-x=13

Mathematics
2 answers:
Oduvanchick [21]2 years ago
8 0

Answer:

3

Step-by-step explanation:

y-x=5 2y-x=13 subtract -y=-8 y=8 8*5 y=8-5=3

mixer [17]2 years ago
5 0

Answer:

x=3

y=8

Step-by-step explanation:

y-x=5

2y-x=13

subtract

-y=-8

y=8

8-x=5

x=8-5=3

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11,700 is invested in a compound interest account paying 3.9% compounded quarterly. How much will be in the account after 18year
Misha Larkins [42]
A=p(1+i/m)^mn
A=11,700×(1+0.039÷4)^(4×18)
A=23,527.94
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Whata the unit rate for 10 pages in 5/6 hours , 5/8 mile in 5 minutes & 1/3 gallons in 1/6 hour
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Hope these are the correct answers! :)
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3 years ago
Sara is 5 ft 10 in tall. To the nearest centimeter how tall is Sara? If 1 inch equals 2.54 centimeters
Novay_Z [31]

Answer:

<em>S</em><em>A</em><em>R</em><em>A</em><em>'</em><em>S</em><em> </em><em>h</em><em>e</em><em>i</em><em>g</em><em>h</em><em>t</em><em> </em><em>i</em><em>s</em><em> </em><em>2</em><em>2</em><em>.</em><em>7</em><em> </em><em>c</em><em>m</em>

Step-by-step explanation:

if 1 inch equals 2.54 cm then 5ft will be:

=5*2.54

=12.7 cm

therefore, sara's height in centimeter:

=12.7+10

=22.7 cm

3 0
3 years ago
Read 2 more answers
Please need help with this math question
Tomtit [17]

Answer:

third option

Step-by-step explanation:

We just have to calculate 2x² - 4x - (x² + 6x). 2x² - x² = x² and -4x - 6x = -10x so the answer is x² - 10x.

5 0
3 years ago
Read 2 more answers
Foil: (x+9)(3x-4)
QveST [7]

QUESTION 1

The given binomial is;

(x+9)(3x-4)

First terms are multiplied: x\times 3x=3x^2

Outside terms are multiplied: x\times -4=-4x

Inside terms are multiplied: 9\times 3x=27x

Last terms are Multiplied: 9\times -4=-36

This gives us;

=3x^2-4x+27x-36

=3x^2+23x-36

QUESTION 2

We want to factor

6r^5s+4r^4s^2-8r^2s

The HCF is 2r^2s

We factor to get;

2r^2s(3r^3+2r^2s-4)

QUESTION 3;

x^2+x-2=0

Split the middle term;

x^2+2x-x-2=0

Factor

x(x+2)-1(x+2)=0

(x+2)(x-1)=0

(x+2)=0,(x-1)=0

x=-2,x=1

The solutions are;

x=-2 and x=1

These are the x-intercepts of the graph of the function

f(x)=x^2+x-2

3 0
3 years ago
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