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Ivahew [28]
3 years ago
11

Solve for x, angle A, and Angle B A x+50 B x+80 c72

Mathematics
2 answers:
jolli1 [7]3 years ago
7 0
I’m assuming you man degrees? Are these angles of a triangle?

This doesn’t really make sense because the angles in a triangle add up to 180° so your equation would be x+50+x+80+72=180

Combine like terms to get
2x+202=180

Then subtract 202 from both sides
2x=-22

So x would be -11 which doesn’t seem right lol
Artist 52 [7]3 years ago
4 0

9514 1404 393

Answer:

  ∠A = 39°

  ∠B = 69°

Step-by-step explanation:

We assume these are angles in a triangle, so their sum is 180°.

  A + B + C = 180

  (x+50) +(x +80) +72 = 180

  2x +202 = 180

  2x = -22

  x = -11

Then the angle measures are ...

  A = -11 +50 = 39

  B = -11 +80 = 69

Angles A and B are 39° and 69°, respectively.

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A dairy needs 364 gallons of milk containing 6% butterfat. How many gallons each of milk containing 7% butterfat and milk contai
MaRussiya [10]

Answer:

Step-by-step explanation:

Let x be gallons of 7%

Let y be gallons of 3%

364 = x + y

y = 364 - x

364(0.06) = x(0.07) + y(0.03)

364(6) = x(7) + y(3)

364(6) = 7x + 3y

364(6) = 7x + 3(364 - x)

364(6 - 3) = 7x - 3x

364(3) = 4x

x = 273

y = 364 - 273 = 91

273 gallons of 7%

91    gallons of 3%

5 0
2 years ago
A marketing firm is asked to estimate the percent of existing customers who would purchase a "digital upgrade" to their basic ca
Ugo [173]

Answer: A. 664

Step-by-step explanation:

Given : A marketing firm is asked to estimate the percent of existing customers who would purchase a "digital upgrade" to their basic cable TV service.

But there is no information regarding the population proportion is mentioned.

Formula to find the samples size , if the prior estimate to the population proportion is unknown :

n=0.25(\dfrac{z*}{E})^2

, where E = Margin of error.

z* = Two -tailed critical z-value

We know that critical value for 99% confidence interval = z*=2.576  [By z-table]

Margin of error = 0.05

Then, the minimum sample size would become :

n=0.25(\dfrac{2.576}{0.05})^2

Simplify,

n=0.25\times2654.3104=663.5776\approx664

Thus, the required sample size= 664

Hence, the correct answer is A. 664.

5 0
3 years ago
How many solutions exist for the given equation?
Archy [21]

Answer:

Infinitely many

Step-by-step explanation:

12x+1=3(4x+1)-2

Expand 3(4x+1)-2

12x+3-2

12x+1

12x+1=12x+1

Simplify.

0=0

True for all values of x

7 0
3 years ago
Estimate the solution to the following system of equations by graphing.
stealth61 [152]


For graphing the following equations I have my answers as

(-0.5,0.75)
8 0
3 years ago
Identify the transformation from ABCD to A'B'C'D'.
KATRIN_1 [288]

Answer:

C. Reflection across the y-axis

Step-by-step explanation:

Reflection across y axis= (x,y) to (-x,y) so B (1,2) is now B'(-1,2). Hope this helped!

8 0
2 years ago
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