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4 years ago

What is the value of x

Mathematics

1 answer:

Anit [1.1K]4 years ago

8 0

The answer maybe 1/2

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Someone pls help it’s due later

Dvinal [7]

Answer:

5.)Z=7

Check:

6.) False

True

Step-by-step explanation:

5z-10=25

5z-10+10=25+10

5z=35

5z/5=35/5

z=7

Check:

5(7)-10=25

35-20=25

25=25

(Love your profile picture)

8 0

3 years ago

Read 2 more answers

Y = 3x + 15 3x + 3y = 9

Zina [86]

Answer:

$\Large\boxed{x=-3}$ $\Large\boxed{y=6}$

Step-by-step explanation:

Given the system of equations

$1)~y=3x+15$

$2)~3x+3y=9$

Divide 3 on both sides of the 2) equation

$3x+3y=9$

$3x\div3+3y\div3=9\div3$

$x+y=3$

Current system

$1)~y=3x+15$

$2)~x+y=3$

Substitute 1) equation into the 2) equation

$x+(3x+15)=3$

Combine like terms

$x+3x+15=3$

$4x+15=3$

Subtract 15 on both sides

$4x+15-15=3-15$

$4x=-12$

Divide 4 on both sides

$4x\div4=-12\div4$

$\Large\boxed{x=-3}$

Substitute the x value into one of the equations to find the y value

$y=3x+15$

$y=3(-3)+15$

$y=-9+15$

$\Large\boxed{y=6}$

Hope this helps!! :)

Please let me know if you have any questions

4 0

2 years ago

What is the scale factor from triangle WHB to triangle RVM

Studentka2010 [4]

Answer:

Step-by-step explanation:

Going from WHB to RVM means that we need the number to multiply by to get to RVM, the smaller triangle.

Multiplying by .5 is the same as dividing by 2.

20 x .5 = 10

16 x .5 = 8

12 x .5 = 6

4 0

3 years ago

The recursive rule for a sequence is shown. an=an−1+9 a1=21

ivann1987 [24]

Step-by-step explanation:

soo wat u wanna do with this?

6 0

3 years ago

If the economy booms, Meyer&Co. stock will have a return of 18.5 percent. If the economy goes into a recession, the stock wi

ValentinkaMS [17]

Answer:

11.84% approx.

Step-by-step explanation:

Expected return = Respective return × Respective probabilities

= (18.5 × 0.71) + (-7.6 × 0.29)

= 10.931%

Probability Return Probability ×(Return - expected return)²

0.71 18.5 0.71×(18.5 - 10.931)² = 40.67573

0.29 -7.6 0.29×(-7.6 - 10.931)² = 99.585409

Total = 140.261139%

$SD=[\frac{\text{total probability(return-expected return)}^2}{\text{total probability}}]^{(\frac{1}{2})}$

= $[\frac{140.261139^2}{140.261139}]^{\frac{1}{2} }$

= 11.84319 ≈ 11.84% approx.

8 0

4 years ago