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Vesnalui [34]
3 years ago
15

If x=-2 and y=6 is a solution of equation 3ax+2by=6, then find the value of b

Mathematics
1 answer:
lana66690 [7]3 years ago
7 0

\text{Substitute the values of x and y to the equation}\\\\x=-2,\ y=6,\ 3ax+2by=6\\\\3a(-2)+2b(6)=6\\\\-6a+12b=6\qquad|\text{add 6a to both sides}\\\\12b=6a+6\qquad|\text{divide both sides by 12}\\\\b=\dfrac{6a}{12}+\dfrac{6}{12}\\\\\boxed{b=\dfrac{1}{2}a+\dfrac{1}{2}}

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I’m not to sure on how to find CEB can someone explain how to find it and what the answer would be,please
lakkis [162]

Answer:

m∠CEB is 55°

Step-by-step explanation:

Since ∠ADE = 55°, and ∠ADE is half of ∠ADC because ED bisects ∠ADC. Bisect means to cut in half.

∠ADC = 110° because it is double of ∠ADE.

Since AB║CD and AD║BC, the two sets of parallel lines means this shape is a parallelogram. In parallelograms, <u>opposite angles have equal measures</u>.

∠ADC = ∠CBE = 110°

All quadrilaterals have a sum of angles 360°. Since ∠DCB = ∠BAD and we know two of these other angles are each 110°:

360° - 2(110°) = 2(∠DCB)

∠DCB = 140°/2

∠DCB = ∠BAD = 70°

∠DCB was bisected by EC, which makes each divided part half.

∠DCE = ∠BCE = (1/2)(∠DCB)

∠DCE = ∠BCE = (1/2)(70°)

∠DCE = ∠BCE = 35°

All triangles' angles sum to 180°.

In ΔBCE, ∠BCE = 35° and ∠CBE = 110°.

∠CEB = 180° - (∠BCE + ∠CBE)

∠CEB = 180° - (35° + 110°)

∠CEB = 55°

Therefore m∠CEB is 55°.

5 0
3 years ago
What is the sum? …………….
aniked [119]
5 over y plus 5. you combine the fractions by finding the common denominator
4 0
3 years ago
Michael is planning to invest his 2,000 into a bank account between investment A with 8% simple interest or investment B with 6%
Angelina_Jolie [31]

The investment with the bigger return is investment B.

<h3>What is simple interest and compound interest?</h3>

Simple interest rate is the interest that is paid only on the principal portion of a loan. This means that the debtor does not pays interest on the interest rate already accrued. This differs from compound interest where the debt holder pays interest on the principal and the interest rate already accrued

<h3>What is the compound interest?</h3>

The formula for calculating future value:

FV = P (1 + r)^n

  • FV = Future value
  • P = Present value
  • R = interest rate
  • N = number of years

2000 x (1.06)^12 = $4024.39

Compound interest =  $4024.39 - $2000 =  $2024.39

<h3>What is the simple interest? </h3>

Simple interest = principal x time x interest rate

2000 x 0.08 x 12 = $1920

To learn more about future value, please check: brainly.com/question/18760477

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2 years ago
The arc length of an arc subtended by an angle measuring 7π/18 radians is 24.6 inches.
IrinaK [193]

See picture reply for answer.

6 0
3 years ago
Help me pleaseeeeeeeeeeee
Leya [2.2K]

Answer:

Step-by-step explanation:

a) 6305/65= 97

b) 94+94= 188

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4 0
2 years ago
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