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3 years ago

I don’t understand this

Mathematics

1 answer:

loris [4]3 years ago

3 0

Answer:

62°

Step-by-step explanation:

The vertex angle is half the difference of the intercepted arc angles.

∠A = ½ (CE − BD)

x = ½ (4x − 10 − 26)

x = ½ (4x − 36)

x = 2x − 18

18 = x

Therefore, the measure of CE is:

4(18) − 10 = 62

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For the following system, use the second equation to make a substitution for y in the first equation.

VARVARA [1.3K]

Answer:

Option A: 3x + 5x - 4 = 1

Step-by-step explanation:

Given that:

3x + y = 1 ------------- eq1

y + 4 = 5x ------------ eq2

Now for substitution in eq1 we will get a value of y from eq2:

y = 5x - 4

Substituting in eq1 we get:

3x + 5x - 4 = 1

i hope it will help you!

5 0

3 years ago

Please help! Will mark as brainliest!

Juliette [100K]

Answer:

Step-by-step explanation:

Use elimination by multiplying thw whole top equation by 2. (both sides)

then cancel out y and solve for x. plug back in to get y

please mark brainliest if you found this helpful

6 0

2 years ago

Read 2 more answers

Is -2x-6=2x+6 no soulution

Olegator [25]

Answer:

Step-by-step explanation:

Let's solve your equation step-by-step.

−2x−6=2x+6

Step 1: Subtract 2x from both sides.

−2x−6−2x=2x+6−2x

−4x−6=6

Step 2: Add 6 to both sides.

−4x−6+6=6+6

−4x=12

Step 3: Divide both sides by -4.

−4x/−4 = 12/-4

x=−3

6 0

2 years ago

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Two more than 16 times a number is the same as 21 less than the product of -7 and the number

slava [35]

Answer:

-1

Step-by-step explanation:

Let the number be x, and we have equation:

16x + 2 = -7x - 21
16x + 7x = - 21 - 2
23x = - 23
x = -1

The number is -1

7 0

2 years ago

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Evaluate this expression (-7--9)*(8+2)

Marizza181 [45]

Before we get started, it is good to remember PEMDAS - the acronym that tells you the order to carry out equations.

P = parentheses
E = exponents
M = multiplication
D = division
A = addition
S = subtraction

Knowing this, we should start by doing the equations within each parentheses.

$(-7 - -9) *(8 + 2)$
$(2) *(10)$

So we did the addition and subtraction pieces within each group leaving us with the above equation. Now let's multiply:

$(2)*(10) = 20$

20 is the answer.

5 0

3 years ago